refactor: Add new glbx variable ticks to security (shm and proto)

This makes it consistent with other type names (we don't use "Sparkd"
anywhere else).

.config/dotnet-tools.json

@@ -9,7 +9,7 @@
       ]
     },
     "fable": {
-      "version": "4.0.6",
+      "version": "4.24.0",
       "commands": [
         "fable"
       ]
@@ -25,6 +25,12 @@
       "commands": [
         "fake"
       ]
+    },
+    "dotnet-t4": {
+      "version": "3.0.0",
+      "commands": [
+        "t4"
+      ]
     }
   }
-}
+}

.devcontainer/devcontainer.json

@@ -1,15 +1,16 @@
 {
-  "dockerFile": "Dockerfile",
-  // Creates local dir to mount to HOME in docker 
-  "initializeCommand": "mkdir -p ${localEnv:HOME}/.bts/devcontainer-mounts/${devcontainerId}",
+  "build": {
+    "dockerfile": "../docker/images/bluetradingsystems/linux_dotnet8_dev/Dockerfile",
+    "options": [
+      "--secret",
+      "id=bitbucket_access_token,src=${localWorkspaceFolder}/.secrets/bitbucket_access_token.txt"
+    ]
+  },
   "hostRequirements": {
-    "memory": "4gb",
-    "storage": "6gb"
+    "memory": "8gb",
+    "storage": "10gb"
   },
-  "postCreateCommand": "/home/bts/spark/docker/sparkd/dev/devcontainer_post_create.sh",
   "containerUser": "bts",
-  "workspaceMount": "source=${localWorkspaceFolder},target=/home/bts/spark,type=bind",
-  "workspaceFolder": "/home/bts/spark",
   "updateRemoteUserUID": true,
   "shutdownAction": "none",
   // Note: If running multiple containers on the same host, each must use a
@@ -17,31 +18,20 @@
   // example, if 8000-8003 is taken, go with 9000-9003, then 10000-10003, etc.
   "runArgs": [
     "--shm-size",
-    "2gb",
-    "-p",
-    "8000:8000",
-    "-p",
-    "8001:8001",
-    "-p",
-    "8002:8002",
-    "-p",
-    "8003:8003"
+    "8gb"
   ],
   "mounts": [
-    "source=${localEnv:HOME}/.bts/devcontainer-mounts/${devcontainerId},target=/home/bts,type=bind"
+    "source=/var/run/docker.sock,target=/var/run/docker.sock,type=bind"
   ],
   "customizations": {
     "vscode": {
-      "settings": {
-        "clangd.arguments": [
-          "--compile-commands-dir=${workspaceFolder}/build/clang/debug"
-        ]
-      },
       "extensions": [
         "eamodio.gitlens",
         "llvm-vs-code-extensions.vscode-clangd",
+        "ms-python.python",
         "ms-vscode.cmake-tools",
-        "ms-vscode.cpptools"
+        "ms-vscode.cpptools",
+        "xaver.clang-format"
       ]
     }
   }

.devcontainer/emumba/install_emumba-deribit-connector.sh

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-
-this_dir="$(realpath "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")")"
-sudo dpkg -i "$this_dir/emumba-deribit-connector-3.3.1-Linux.LICENSE_DISABLED.deb"

.editorconfig

@@ -207,17 +207,23 @@ dotnet_naming_symbols.parameters.applicable_accessibilities = public,internal,pr
 dotnet_naming_symbols.private_symbols.applicable_kinds = property,method,field,event,delegate
 dotnet_naming_symbols.private_symbols.applicable_accessibilities = protected,private
 
+# local symbols
+dotnet_naming_symbols.local_symbols.applicable_kinds = local
+
+# parameter symbols
+dotnet_naming_symbols.parameter_symbols.applicable_kinds = parameter
+
 # Naming styles
 
-dotnet_naming_style.snake_case.required_prefix =
-dotnet_naming_style.snake_case.required_suffix =
-dotnet_naming_style.snake_case.word_separator = _
-dotnet_naming_style.snake_case.capitalization = all_lower
+dotnet_naming_style.pascal_case.required_prefix =
+dotnet_naming_style.pascal_case.required_suffix =
+dotnet_naming_style.pascal_case.word_separator =
+dotnet_naming_style.pascal_case.capitalization = pascal_case
 
-dotnet_naming_style.private_snake_case.required_prefix = _
-dotnet_naming_style.private_snake_case.required_suffix =
-dotnet_naming_style.private_snake_case.word_separator = _
-dotnet_naming_style.private_snake_case.capitalization = all_lower
+dotnet_naming_style.camel_case.required_prefix =
+dotnet_naming_style.camel_case.required_suffix =
+dotnet_naming_style.camel_case.word_separator =
+dotnet_naming_style.camel_case.capitalization = camel_case
 
 dotnet_naming_style.user_types.required_prefix =
 dotnet_naming_style.user_types.required_suffix =
@@ -229,6 +235,10 @@ dotnet_naming_style.interface.required_suffix =
 dotnet_naming_style.interface.word_separator =
 dotnet_naming_style.interface.capitalization = pascal_case
 
+dotnet_naming_style.local.capitalization = camel_case
+
+dotnet_naming_style.parameter.capitalization = camel_case
+
 # rules
 dotnet_naming_rule.user_types.symbols = user_types
 dotnet_naming_rule.user_types.style = user_types
@@ -238,14 +248,18 @@ dotnet_naming_rule.interfaces.symbols = interface
 dotnet_naming_rule.interfaces.style = interface_style
 dotnet_naming_rule.interfaces.severity = suggestion
 
-dotnet_naming_rule.public_members_snake_case.symbols = public_symbols
-dotnet_naming_rule.public_members_snake_case.style = snake_case
-dotnet_naming_rule.public_members_snake_case.severity = suggestion
+dotnet_naming_rule.public_members.symbols = public_symbols
+dotnet_naming_rule.public_members.style = pascal_case
+dotnet_naming_rule.public_members.severity = suggestion
 
-dotnet_naming_rule.private_members_snake_case.symbols = private_symbols
-dotnet_naming_rule.private_members_snake_case.style = private_snake_case
-dotnet_naming_rule.private_members_snake_case.severity = suggestion
+dotnet_naming_rule.private_members.symbols = private_symbols
+dotnet_naming_rule.private_members.style = camel_case
+dotnet_naming_rule.private_members.severity = suggestion
 
-dotnet_naming_rule.parameters.symbols = parameters
-dotnet_naming_rule.parameters.style = snake_case
+dotnet_naming_rule.variables_are_camel_case.severity = suggestion
+dotnet_naming_rule.variables_are_camel_case.symbols = local_symbols
+dotnet_naming_rule.variables_are_camel_case.style = local
+
+dotnet_naming_rule.parameters.symbols = parameter_symbols
+dotnet_naming_rule.parameters.style = parameter
 dotnet_naming_rule.parameters.severity = suggestion

.env

@@ -0,0 +1,56 @@
+# This file defines the global default configuration for docker deployments.
+# It is tracked in source control. For temporary modifications, please create
+# a separate file called ".env.local" (it's in .gitignore, so won't be tracked).
+# If a variable is defined in both files, the value in .env.local will be used.
+#
+# About the deployment procedure:
+#   We use Docker Compose to build images and launch containers for various services
+#   that make up our software suite:
+#     - sparkd
+#     - TODO: pubsub
+#     - TODO: md-publisher
+#     - TODO: webapp (DSQA on the web)
+#     - TODO: api-server (websocket based)
+#   From inside a devcontainer, you can launch all services in separate containers
+#   on your machine by running:
+#
+#     tools/deploy.sh
+#
+#   This script builds release versions for each service, packaged (generally) in
+#   self-contained directories. Next, it runs a few "docker compose" commands to
+#   build docker images loaded with the self-contained binaries from the previous
+#   step, and start containers with those images to run each service. To view the
+#   commands that deploy.sh runs internally (without actually running them), run:
+#
+#     tools/deploy.sh --dry-run
+#
+#   For additional information/help, run:
+#
+#     tools/deploy.sh --help
+#
+
+### Sparkd ###
+# The internal image for sparkd to use. For more info, view:
+#   src/server/sparkd/Dockerfile
+SPARKD__IMAGE=sparkd
+# The config dir for this service to use
+SPARKD__CONFIG_DIR=src/app_sparkd/configurations/dev
+# Mount a specific volume or dir to "~/sparkdata/data" inside the docker.
+# Defaults to a volume named "sparkd_<config_port>" (e.g., sparkd_8000).
+# SPARKD__DATA_DIR=/home/bts/sparkdata/data
+SPARKD__SOURCE_DIR=install/sparkd-release-gcc
+SPARKD__RUNTIME_CONF_DIR=/home/ubuntu/8000/sparkdata/conf/
+SPARKD__CONFIG_PORT=8000
+SPARKD__QUICKBUS_PORT=8001
+SPARKD__SIM_FIX_PORT=8002
+SPARKD__SHM_SIZE=4gb
+SPARKD__PYTHON_REQUIREMENTS=requirements.txt
+
+### PubSubServer ###
+PUBSUB__CONFIG_DIR=src/DataStreamSuite/PubSubServer/Configurations/Development
+PUBSUB__SOURCE_DIR=build/Release/bin/net8.0/linux-x64/publish
+
+### MdPublisher ###
+MD_PUBLISHER__CONFIG_DIR=src/DataStreamSuite/DataStreamPublisher/Configurations/ReplayMarketData
+MD_PUBLISHER__SOURCE_DIR=build/Release/bin/net8.0/linux-x64/publish
+# TODO: add config for other services (pubsub, md-publisher, webapp, api-server, etc.)

.gitattributes

@@ -0,0 +1,3 @@
+*.cmd text=auto eol=crlf
+*.cs text=auto eol=crlf
+*.sh text=auto eol=lf

.gitignore

@@ -8,7 +8,10 @@ cmake-build-debug/
 .idea/
 .dir-locals.el
 *.pyc
-**.vscode
+**.vscode/*
+!.vscode/launch.json
+!.vscode/tasks.json
+!.vscode/*.env
 .vs
 obj/
 *.csproj.user
@@ -52,8 +55,12 @@ trace_data/
 .cache/
 /src/Spark.Admin.WebApp/tsconfig.*.g.json
 /src/Spark.Admin.WebApp/src/bin/
+/src/**/*appsettings.Local.json
+/src/**/*/Configurations/Local/
 **/CMakeDeps.cmake
 **/CMakeDeps_win.cmake
 .devcontainer/
 *.Generated.cs
 *.lst
+.env.local
+.secrets

.gitmodules

@@ -1,6 +1,6 @@
 [submodule "externals"]
 	path = externals
-	url = git@bitbucket.org:bluetradesys/externals.git
+	url = https://bitbucket.org/bluetradesys/externals.git
 [submodule "vcpkg"]
 	path = vcpkg
 	url = https://github.com/microsoft/vcpkg.git

.vscode/launch.json

@@ -0,0 +1,499 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Python Debugger: Current File with Arguments",
+      "type": "debugpy",
+      "request": "launch",
+      "program": "${file}",
+      "console": "integratedTerminal",
+      "args": "${command:pickArgs}"
+    },
+    {
+      "name": ".NET Core Attach",
+      "type": "coreclr",
+      "request": "attach"
+    },
+    {
+      "name": "Api Server",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "preLaunchTask": "Build Api Server (Debug)",
+      "windows": {
+        "program": "spark_api_server.exe",
+      },
+      "linux": {
+        "program": "spark_api_server",
+      },
+      "args": [
+        "run",
+      ],
+      "cwd": "build/Debug/bin/net8.0",
+      "env": {
+        "DOTNET_ENVIRONMENT": "${input:apiServerEnvironment}",
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Api Server (Skip Build)",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "windows": {
+        "program": "spark_api_server.exe",
+      },
+      "linux": {
+        "program": "spark_api_server",
+      },
+      "args": [
+        "run",
+      ],
+      "cwd": "build/Debug/bin/net8.0",
+      "env": {
+        "DOTNET_ENVIRONMENT": "${input:apiServerEnvironment}",
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "DataStreamPublisher",
+      "type": "coreclr",
+      "request": "launch",
+      "preLaunchTask": "Build DataStream (Debug)",
+      "program": "",
+      "linux": {
+        "program": "DataStreamPublisher",
+      },
+      "windows": {
+        "program": "DataStreamPublisher.exe",
+      },
+      "cwd": "build/Debug/bin/net8.0",
+      "env": {
+        "DOTNET_ENVIRONMENT": "${input:dataStreamPublisherEnvironment}",
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "DataStreamPublisher (Skip Build)",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "linux": {
+        "program": "DataStreamPublisher",
+      },
+      "windows": {
+        "program": "DataStreamPublisher.exe",
+      },
+      "cwd": "${workspaceFolder}/build/Debug/bin/net8.0",
+      "env": {
+        "DOTNET_ENVIRONMENT": "${input:dataStreamPublisherEnvironment}",
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "(gdb) Launch",
+      "type": "cppdbg",
+      "request": "launch",
+      "program": "/home/bts/spark/build/sparkd-debug-clang/server/sparkd",
+      "args": [
+        "run"
+      ],
+      "stopAtEntry": false,
+      "cwd": "/home/bts/spark/build/sparkd-debug-clang/server",
+      "environment": [],
+      "externalConsole": false,
+      "MIMode": "gdb",
+    },
+    {
+      "name": "spreader tests2",
+      "type": "cppdbg",
+      "request": "launch",
+      "program": "/home/bts/spark/build/sparkd-debug-clang/server/sparkd",
+      "args": [
+        "test",
+        "[spreader2]"
+      ],
+      "stopAtEntry": false,
+      "cwd": "/home/bts/spark/build/sparkd-debug-clang/server",
+      "environment": [],
+      "externalConsole": false,
+      "MIMode": "gdb",
+    },
+    {
+      "name": "spreader tests",
+      "type": "cppdbg",
+      "request": "launch",
+      "program": "/home/bts/spark/build/sparkd-debug-clang/server/sparkd",
+      "args": [
+        "test",
+        "[spreader]"
+      ],
+      "stopAtEntry": false,
+      "cwd": "/home/bts/spark/build/sparkd-debug-clang/server",
+      "environment": [],
+      "externalConsole": false,
+      "MIMode": "gdb",
+    },
+    {
+      "name": "DataStreamQueryAnalyzer",
+      "type": "coreclr",
+      "request": "launch",
+      "preLaunchTask": "Build DataStream (Debug)",
+      "program": "",
+      "windows": {
+        "program": "DataStreamQueryAnalyzer.exe",
+        "cwd": "build/Debug/bin/net8.0-windows",
+        "env": {
+          "PYTHON_EXE": "${workspaceFolder}/.venv/Scripts/python.exe",
+          "DOTNET_ENVIRONMENT": "${input:dataStreamQueryAnalyzerEnvironment}",
+        },
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal",
+    },
+    {
+      "name": "DataStreamQueryAnalyzer (Skip Build)",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "windows": {
+        "program": "DataStreamQueryAnalyzer.exe",
+        "cwd": "build/Debug/bin/net8.0-windows",
+        "env": {
+          "PYTHON_EXE": "${workspaceFolder}/.venv/Scripts/python.exe",
+          "DOTNET_ENVIRONMENT": "${input:dataStreamQueryAnalyzerEnvironment}",
+        },
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal",
+    },
+    {
+      "name": "PubSubServer",
+      "type": "coreclr",
+      "request": "launch",
+      "preLaunchTask": "Build DataStream (Debug)",
+      "program": "",
+      "linux": {
+        "program": "PubSubServer",
+      },
+      "windows": {
+        "program": "PubSubServer.exe",
+      },
+      "args": [
+        "--config",
+        "${workspaceFolder}/src/DataStreamSuite/PubSubServer/Configurations/${input:pubSubServerConfig}.json"
+      ],
+      "cwd": "build/Debug/bin/net8.0",
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "PubSubServer (Skip Build)",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "linux": {
+        "program": "PubSubServer",
+      },
+      "windows": {
+        "program": "PubSubServer.exe",
+      },
+      "cwd": "build/Debug/bin/net8.0",
+      "env": {
+        "DOTNET_ENVIRONMENT": "${input:pubSubServerEnvironment}",
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Sdk Demo",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "preLaunchTask": "Build Api Server (Debug)",
+      "windows": {
+        "program": "Bts.Spark.Sdk.Demo.exe",
+      },
+      "linux": {
+        "program": "Bts.Spark.Sdk.Demo",
+      },
+      "cwd": "build/Debug/bin/net8.0",
+      "env": {
+        "DOTNET_ENVIRONMENT": "${input:sdkDemoEnvironment}",
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Sdk Demo (Skip Build)",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "windows": {
+        "program": "Bts.Spark.Sdk.Demo.exe",
+      },
+      "linux": {
+        "program": "Bts.Spark.Sdk.Demo.exe",
+      },
+      "cwd": "build/Debug/bin/net8.0",
+      "env": {
+        "DOTNET_ENVIRONMENT": "${input:sdkDemoEnvironment}",
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Spark",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "windows": {
+        "preLaunchTask": "Build Spark (Debug)",
+        "program": "Spark.exe",
+        "cwd": "build/Debug/bin/net8.0-windows",
+        "env": {
+          "DOTNET_ENVIRONMENT": "${input:sparkEnvironment}",
+        }
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Spark (Skip Build)",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "windows": {
+        "program": "Spark.exe",
+        "cwd": "build/Debug/bin/net8.0-windows",
+        "env": {
+          "DOTNET_ENVIRONMENT": "${input:sparkEnvironment}",
+        }
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Spark (Parameterized)",
+      "type": "coreclr",
+      "request": "launch",
+      "preLaunchTask": "Build Spark (Debug)",
+      "program": "",
+      "windows": {
+        "program": "Spark.exe",
+        "args": [
+          "--sparkd",
+          "${input:sparkConfigServer}"
+        ],
+        "cwd": "build/Debug/bin/net8.0-windows",
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Spark Test",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "windows": {
+        "preLaunchTask": "Build Spark (Debug)",
+        "program": "Spark.Console.exe",
+        "cwd": "build/Debug/bin/net8.0",
+        "args": [
+          "test",
+          "${input:sparkTest}"
+        ]
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Spark Test (Skip Build)",
+      "type": "coreclr",
+      "request": "launch",
+      "program": "",
+      "windows": {
+        "program": "Spark.Console.exe",
+        "cwd": "build/Debug/bin/net8.0",
+        "args": [
+          "test",
+          "${input:sparkTest}"
+        ]
+      },
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Sparkd",
+      "type": "cppdbg",
+      "request": "launch",
+      "program": "",
+      "linux": {
+        "program": "${workspaceFolder}/build/sparkd-debug-clang/src/app_sparkd/sparkd",
+        "preLaunchTask": "Build Sparkd (Debug | Clang)",
+      },
+      "args": [
+        "run"
+      ],
+      "cwd": "${workspaceFolder}/build/sparkd-debug-clang/src/app_sparkd",
+      "stopAtEntry": false,
+      "externalConsole": false,
+      "MIMode": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        },
+        {
+          "description": "Set Disassembly Flavor to Intel",
+          "text": "-gdb-set disassembly-flavor intel",
+          "ignoreFailures": true
+        }
+      ]
+    },
+    {
+      "name": "Sparkd (Skip Build)",
+      "type": "cppdbg",
+      "request": "launch",
+      "program": "",
+      "linux": {
+        "program": "${workspaceFolder}/build/sparkd-debug-clang/src/app_sparkd/sparkd",
+      },
+      "args": [
+        "run"
+      ],
+      "cwd": "${workspaceFolder}/build/sparkd-debug-clang/src/app_sparkd",
+      "stopAtEntry": false,
+      "externalConsole": false,
+      "MIMode": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        },
+        {
+          "description": "Set Disassembly Flavor to Intel",
+          "text": "-gdb-set disassembly-flavor intel",
+          "ignoreFailures": true
+        }
+      ]
+    },
+    {
+      "name": "Sparkd Attach",
+      "type": "cppdbg",
+      "request": "attach",
+      "program": "${workspaceFolder}/build/sparkd-debug-clang/src/app_sparkd/sparkd",
+      "MIMode": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        },
+        {
+          "description": "Set Disassembly Flavor to Intel",
+          "text": "-gdb-set disassembly-flavor intel",
+          "ignoreFailures": true
+        }
+      ]
+    },
+  ],
+  "inputs": [
+    {
+      "id": "apiServerEnvironment",
+      "type": "pickString",
+      "description": "Api Server Configuration",
+      "options": [
+        "Development",
+        "Local",
+        "Staging",
+      ],
+      "default": "Development",
+    },
+    {
+      "id": "dataStreamPublisherConfig",
+      "type": "pickString",
+      "description": "Publisher Configuration",
+      "options": [
+        "MarketDataPublisher",
+        "SimpleEchoClient",
+        "SimpleTestDataPublisher",
+        "TestDataPublisher",
+      ],
+      "default": "MarketDataPublisher",
+    },
+    {
+      "id": "dataStreamQueryAnalyzerEnvironment",
+      "type": "pickString",
+      "description": "DataStreamQueryAnalyzer Configuration",
+      "options": [
+        "Development",
+        "Local",
+      ],
+      "default": "Development",
+    },
+    {
+      "id": "dataStreamPublisherEnvironment",
+      "type": "pickString",
+      "description": "DataStreamPublisher Configuration",
+      "options": [
+        "Local",
+        "ReplayMarketData",
+      ],
+      "default": "Local",
+    },
+    {
+      "id": "pubSubServerConfig",
+      "type": "pickString",
+      "description": "PubSub Configuration",
+      "options": [
+        "PubSubServer",
+        "SimpleEchoClient",
+      ],
+      "default": "PubSubServer",
+    },
+    {
+      "id": "sdkDemoEnvironment",
+      "type": "pickString",
+      "description": "Sdk Demo Configuration",
+      "options": [
+        "Development",
+        "Local",
+        "Staging",
+      ],
+      "default": "Development",
+    },
+    {
+      "id": "sparkConfigServer",
+      "type": "promptString",
+      "description": "Config Server URL",
+      "default": "http://localhost:8000/config",
+    },
+    {
+      "id": "sparkEnvironment",
+      "type": "pickString",
+      "description": "Spark Configuration",
+      "options": [
+        "Development",
+        "Local",
+      ],
+      "default": "Development",
+    },
+    {
+      "id": "sparkTest",
+      "type": "promptString",
+      "description": "Test to run",
+    },
+    {
+      "id": "sparkdTest",
+      "type": "promptString",
+      "description": "Test to run",
+    },
+  ]
+}

.vscode/python.env

@@ -0,0 +1 @@
+PYTHONPATH=/workspaces/spark/build/sparkd-debug-clang/src/lib_python_interop;/workspaces/spark/src/lib_python_interop/python_interop_plugins;/workspaces/spark/tools/py

Bts.Spark.Sdk.sln

@@ -0,0 +1,162 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{827E0CD3-B72D-47B6-A68D-7590B98EB39B}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "cs", "cs", "{C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Spark.Core", "src\cs\Bts.Spark.Core\Bts.Spark.Core.csproj", "{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Spark.Api", "src\cs\Bts.Spark.Api\Bts.Spark.Api.csproj", "{8949AF88-F1D3-4BC4-827F-B088B555F7B9}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Extensions.Hosting", "src\cs\Bts.Extensions.Hosting\Bts.Extensions.Hosting.csproj", "{37E4E890-D025-4729-90F9-6F95862F47BC}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Spark.Sdk", "src\cs\Bts.Spark.Sdk\Bts.Spark.Sdk.csproj", "{A5FF3FAF-43CB-496B-AF4B-F61EFD645579}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Spark.Sdk.Demo", "src\cs\Bts.Spark.Sdk.Demo\Bts.Spark.Sdk.Demo.csproj", "{FCFDBDBE-74B0-41C4-9011-C651B21056D4}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Collections", "src\cs\Bts.Collections\Bts.Collections.csproj", "{3BF4DF96-5AFF-4674-866A-71A8090627FF}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Core", "src\cs\Bts.Core\Bts.Core.csproj", "{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Disposables", "src\cs\Bts.Disposables\Bts.Disposables.csproj", "{62067659-AA2E-4CB5-B7CE-0B38EAA92080}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Numerics", "src\cs\Bts.Numerics\Bts.Numerics.csproj", "{2FE1E5D0-168A-4D83-9B18-0D48250B4BFE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Debug|Any CPU.Build.0 = Debug|x64
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Debug|x64.ActiveCfg = Debug|x64
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Debug|x64.Build.0 = Debug|x64
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Debug|x86.ActiveCfg = Debug|x64
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Debug|x86.Build.0 = Debug|x64
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Release|Any CPU.ActiveCfg = Release|x64
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Release|Any CPU.Build.0 = Release|x64
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+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C}.Release|x86.Build.0 = Release|x64
+		{8949AF88-F1D3-4BC4-827F-B088B555F7B9}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{8949AF88-F1D3-4BC4-827F-B088B555F7B9}.Debug|Any CPU.Build.0 = Debug|x64
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+		{8949AF88-F1D3-4BC4-827F-B088B555F7B9}.Debug|x86.ActiveCfg = Debug|x64
+		{8949AF88-F1D3-4BC4-827F-B088B555F7B9}.Debug|x86.Build.0 = Debug|x64
+		{8949AF88-F1D3-4BC4-827F-B088B555F7B9}.Release|Any CPU.ActiveCfg = Release|x64
+		{8949AF88-F1D3-4BC4-827F-B088B555F7B9}.Release|Any CPU.Build.0 = Release|x64
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+		{37E4E890-D025-4729-90F9-6F95862F47BC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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+		{37E4E890-D025-4729-90F9-6F95862F47BC}.Debug|x64.ActiveCfg = Debug|Any CPU
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+		{37E4E890-D025-4729-90F9-6F95862F47BC}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{37E4E890-D025-4729-90F9-6F95862F47BC}.Debug|x86.Build.0 = Debug|Any CPU
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+		{37E4E890-D025-4729-90F9-6F95862F47BC}.Release|x86.Build.0 = Release|Any CPU
+		{A5FF3FAF-43CB-496B-AF4B-F61EFD645579}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A5FF3FAF-43CB-496B-AF4B-F61EFD645579}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A5FF3FAF-43CB-496B-AF4B-F61EFD645579}.Debug|x64.ActiveCfg = Debug|Any CPU
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+		{A5FF3FAF-43CB-496B-AF4B-F61EFD645579}.Debug|x86.Build.0 = Debug|Any CPU
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+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Debug|x64.ActiveCfg = Debug|Any CPU
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+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Debug|x86.Build.0 = Debug|Any CPU
+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Release|x64.ActiveCfg = Release|Any CPU
+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Release|x64.Build.0 = Release|Any CPU
+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Release|x86.ActiveCfg = Release|Any CPU
+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4}.Release|x86.Build.0 = Release|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Debug|x64.Build.0 = Debug|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Debug|x86.Build.0 = Debug|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Release|x64.ActiveCfg = Release|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Release|x64.Build.0 = Release|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Release|x86.ActiveCfg = Release|Any CPU
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF}.Release|x86.Build.0 = Release|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Debug|x64.Build.0 = Debug|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Debug|x86.Build.0 = Debug|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B}.Release|x64.ActiveCfg = Release|Any CPU
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+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080}.Debug|x64.Build.0 = Debug|Any CPU
+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080}.Debug|x86.Build.0 = Debug|Any CPU
+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080}.Release|Any CPU.Build.0 = Release|Any CPU
+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080}.Release|x64.ActiveCfg = Release|Any CPU
+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080}.Release|x64.Build.0 = Release|Any CPU
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+		{2FE1E5D0-168A-4D83-9B18-0D48250B4BFE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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+		{2FE1E5D0-168A-4D83-9B18-0D48250B4BFE}.Debug|x64.Build.0 = Debug|Any CPU
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+		{2FE1E5D0-168A-4D83-9B18-0D48250B4BFE}.Release|Any CPU.ActiveCfg = Release|Any CPU
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+		{2FE1E5D0-168A-4D83-9B18-0D48250B4BFE}.Release|x64.ActiveCfg = Release|Any CPU
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+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
+		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{8949AF88-F1D3-4BC4-827F-B088B555F7B9} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{37E4E890-D025-4729-90F9-6F95862F47BC} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{A5FF3FAF-43CB-496B-AF4B-F61EFD645579} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{FCFDBDBE-74B0-41C4-9011-C651B21056D4} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{3BF4DF96-5AFF-4674-866A-71A8090627FF} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{CD0A3EEF-303A-44EE-85F2-76F4CE632A3B} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{62067659-AA2E-4CB5-B7CE-0B38EAA92080} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{2FE1E5D0-168A-4D83-9B18-0D48250B4BFE} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+	EndGlobalSection
+EndGlobal

CMakeLists.txt

@@ -1,7 +1,10 @@
 cmake_minimum_required(VERSION 3.12)
 project(spark)
+include(GNUInstallDirs)
+include(${CMAKE_SOURCE_DIR}/cmake/GitVersion.cmake)
 set(CMAKE_CXX_STANDARD 20)
 
+get_version_from_git()
 if(WIN32)
   set(platform "windows")
 else()
@@ -14,12 +17,17 @@ set(
   CACHE
   STRING
   "External dependencies root folder (should contain folders: lib, bin, include")
-set(SPARK_BIN "${EXTERNALS_ROOT}/bin")
-set(SPARK_INCLUDE "${EXTERNALS_ROOT}/include")
-set(SPARK_LIB "${EXTERNALS_ROOT}/lib/$<CONFIG>")
-set(BUILD_API_SERVER OFF CACHE BOOL "Build the api server")
+
+# SHARED_MEMORY_PREFIX serves as a kind of namespace so multiple applications
+# can run simultaneously without fighting over the same shm files (e.g., sparkd,
+# api server, etc.).
+set(SHARED_MEMORY_PREFIX "\${BTS_SHARED_MEMORY_PREFIX}" CACHE STRING "Prefix to use when creating shared memory files")
+set(EXTERNALS_BIN "${EXTERNALS_ROOT}/bin")
+set(EXTERNALS_INCLUDE "${EXTERNALS_ROOT}/include")
+set(EXTERNALS_LIB "${EXTERNALS_ROOT}/lib/$<CONFIG>")
 set(BUILD_DOCS OFF CACHE BOOL "Build documentation")
 set(BUILD_SDK OFF CACHE BOOL "Build the sdk")
+set(EXPORT_MD_CONSUMER OFF CACHE BOOL "Export (extern) C functions for MD consumer interop")
 if (WIN32)
   set(BUILD_SPARKD OFF CACHE BOOL "Build sparkd")
   set(BUILD_ADMIN_WEB_APP OFF CACHE BOOL "Build the Admin WebApp")
@@ -28,32 +36,19 @@ else()
   set(BUILD_ADMIN_WEB_APP ON CACHE BOOL "Build the Admin WebApp")
 endif()
 
-include_directories(BEFORE SYSTEM ${SPARK_INCLUDE} ${EXTERNALS_ROOT}/include/zlib)
-link_directories(${SPARK_LIB})
+include_directories(BEFORE SYSTEM ${EXTERNALS_INCLUDE} ${EXTERNALS_ROOT}/include/zlib)
+link_directories(${EXTERNALS_LIB})
 
-if(BUILD_API_SERVER)
-  add_compile_definitions(SPARK_ENABLE_API_SERVER)
+add_compile_definitions(SHARED_MEMORY_PREFIX="${SHARED_MEMORY_PREFIX}")
+if(DEFINED APP_DATA_DIR)
+  add_compile_definitions(APP_DATA_DIR="${APP_DATA_DIR}")
 endif()
-
+add_compile_definitions(EXPORT_MD_CONSUMER="${EXPORT_MD_CONSUMER}")
 if(WIN32)
-  add_compile_definitions(SHARED_MEMORY_PREFIX="spark")
-  add_compile_definitions(APP_DATA_DIR="\$\{APPDATA\}/bts/")
   # subdirs
-  add_subdirectory(src/lib)
+  add_subdirectory(src/lib_spark)
 else()
-  # make sparkd look for libspark.so in its directory
-  set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
-  set(CMAKE_INSTALL_RPATH ".")
-  set(CMAKE_INSTALL_PREFIX "${CMAKE_SOURCE_DIR}/install")
-  set(SPARK_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/$<CONFIG>")
-
-  if(BUILD_API_SERVER)
-    add_compile_definitions(APP_DATA_DIR="\$\{HOME\}/spark_api/")
-    add_compile_definitions(SHARED_MEMORY_PREFIX="spark_api")
-  elseif(BUILD_SPARKD)
-    add_compile_definitions(SHARED_MEMORY_PREFIX="sparkd")
-    add_compile_definitions(APP_DATA_DIR="\$\{HOME\}/sparkdata/")
-
+  if(BUILD_SPARKD)
     # Note: All macros that begin w/ 'CCAPI' are ccapi's macros (defined and/or
     # read by their code). We override some below.
     add_compile_definitions(SPARK_ENABLE_CCAPI)
@@ -90,9 +85,15 @@ else()
     add_compile_definitions(BINANCE_US_PRICE_STATS_PATH="/api/v3/ticker/24hr")
 
     # ** Binance USDS Futures **
-    add_compile_definitions(CCAPI_BINANCE_USDS_FUTURES_URL_REST_BASE="https://dapi.binance.com")
-    add_compile_definitions(BINANCE_USDS_FUTURES_INSTRUMENTS_PATH="/dapi/v1/exchangeInfo")
-    add_compile_definitions(BINANCE_USDS_FUTURES_PRICE_STATS_PATH="/dapi/v1/ticker/24hr")
+    add_compile_definitions(CCAPI_BINANCE_USDS_FUTURES_URL_REST_BASE="https://fapi.binance.com")
+    add_compile_definitions(BINANCE_USDS_FUTURES_INSTRUMENTS_PATH="/fapi/v1/exchangeInfo")
+    add_compile_definitions(BINANCE_USDS_FUTURES_PRICE_STATS_PATH="/fapi/v1/ticker/24hr")
+    add_compile_definitions(BINANCE_USDS_FUTURES_USER_DATA_PATH="/api/v3/userDataStream")
+
+    # ** Binance Coin Futures **
+    add_compile_definitions(CCAPI_BINANCE_COIN_FUTURES_URL_REST_BASE="https://dapi.binance.com")
+    add_compile_definitions(BINANCE_COIN_FUTURES_INSTRUMENTS_PATH="/dapi/v1/exchangeInfo")
+    add_compile_definitions(BINANCE_COIN_FUTURES_PRICE_STATS_PATH="/dapi/v1/ticker/24hr")
 
     # ** Deribit **
     add_compile_definitions(DERIBIT_INSTRUMENT_PATH="/api/v2/public/get_instrument")
@@ -111,11 +112,15 @@ else()
   endif()
 
   # subdirs
+  add_subdirectory(src/lib_spark)
   if (BUILD_SPARKD)
-    add_subdirectory(src/server/sparkd)
+    add_subdirectory(src/lib_python_interop)
+    add_subdirectory(src/lib_onixs_fix)
+    add_subdirectory(src/lib_binance)
+    add_subdirectory(src/lib_okx_execution)
+    add_subdirectory(src/app_sparkd)
     add_subdirectory(src/data_files)
   endif()
-  add_subdirectory(src/lib)
   if (BUILD_ADMIN_WEB_APP)
     add_subdirectory(src/Spark.Admin.WebApp)
   endif()
@@ -125,32 +130,4 @@ else()
   if(BUILD_SDK)
     add_subdirectory(src/sdk)
   endif()
-
-  if(BUILD_SPARKD)
-    add_custom_command(
-      OUTPUT ${CMAKE_BINARY_DIR}/server
-      COMMAND mkdir -p ${CMAKE_BINARY_DIR}/server
-      COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/src/server/sparkd/sparkd ${CMAKE_BINARY_DIR}/server
-      COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/data_files ${CMAKE_BINARY_DIR}/server
-      COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/src/lib/libspark.so ${CMAKE_BINARY_DIR}/server
-      COMMAND
-        ln ARGS -sf
-        ${EXTERNALS_ROOT}/lib/Release/libOnixS.IceImpactMulticastPriceFeedHandlerCpp.so.3.16.0.0
-        ${CMAKE_BINARY_DIR}/server
-      COMMAND ln ARGS -sf ${EXTERNALS_ROOT}/lib/Release/libACE-5.7.5.so ${CMAKE_BINARY_DIR}/server
-      COMMAND mkdir ARGS -p ${CMAKE_BINARY_DIR}/server/plugins
-      COMMENT "Creating server runtime layout"
-      DEPENDS sparkd data_files_dir)
-
-    add_custom_target(server_layout ALL DEPENDS ${CMAKE_BINARY_DIR}/server)
-
-    install(
-      DIRECTORY "${CMAKE_BINARY_DIR}/server/plugins"
-      DESTINATION "${SPARK_INSTALL_PREFIX}/bin")
-    install(
-      FILES
-      "${SPARK_LIB}/libACE-5.7.5.so"
-      "${SPARK_LIB}/libOnixS.IceImpactMulticastPriceFeedHandlerCpp.so.3.16.0.0"
-      DESTINATION "${SPARK_INSTALL_PREFIX}/bin")
-  endif()
 endif()

CMakePresets.json

@@ -8,14 +8,31 @@
 
   "configurePresets": [
     {
-      "name": "spark",
+      "name": "spark-base",
+      "hidden": true,
+      "binaryDir": "${sourceDir}/build/${presetName}",
+      "cacheVariables": {
+        "CMAKE_CXX_STANDARD": "20",
+        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
+        "CMAKE_TOOLCHAIN_FILE": "${sourceDir}/vcpkg/scripts/buildsystems/vcpkg.cmake",
+        "CONFIG_DEFAULTS_PATH": "spark/config/profiles/default/*.conf",
+        "EXPORT_MD_CONSUMER": {
+          "type": "BOOL",
+          "value": "ON"
+        }
+      }
+    },
+
+    {
+      "name": "spark-windows",
+      "inherits": "spark-base",
+      "displayName": "Spark",
       "condition": {
         "type": "equals",
         "lhs": "${hostSystemName}",
         "rhs": "Windows"
       },
       "generator": "Visual Studio 17 2022",
-      "binaryDir": "${sourceDir}/build",
       "environment": {
         "SPARK_CMAKE_CXX_FLAGS": "/MP /WX /wd4250 /wd4251 /wd4244 /wd4267 /wd4355 /wd4275 /wd4345 /bigobj /EHsc /DCURL_STATICLIB /D_WINSOCK_DEPRECATED_NO_WARNINGS /D__TBB_NO_IMPLICIT_LINKAGE /DBOOST_ALL_NO_LIB /std:c++20 /D_SCL_SECURE_NO_WARNINGS /D_CRT_SECURE_NO_WARNINGS /D_WIN32_WINNT=0x0600"
       },
@@ -23,14 +40,9 @@
         "CMAKE_CXX_FLAGS": "$env{SPARK_CMAKE_CXX_FLAGS}",
         "CMAKE_CXX_FLAGS_DEBUG": "$env{SPARK_CMAKE_CXX_FLAGS} /MTd",
         "CMAKE_CXX_FLAGS_RELEASE": "$env{SPARK_CMAKE_CXX_FLAGS} /MT",
-        "CMAKE_CXX_STANDARD": "20",
         "CMAKE_SHARED_LINKER_FLAGS_DEBUG": "/DEBUG",
         "CMAKE_SHARED_LINKER_FLAGS_RELEASE": "/OPT:REF /OPT:ICF /LTCG",
-        "CMAKE_TOOLCHAIN_FILE": "${sourceDir}/vcpkg/scripts/buildsystems/vcpkg.cmake",
-        "EXTERNALS_ROOT": "${sourceDir}/externals/windows",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf",
-        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0",
-        "DOTNET_WINDOWS_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0-windows"
+        "EXTERNALS_ROOT": "${sourceDir}/externals/windows"
       }
     },
 
@@ -48,12 +60,18 @@
         "platform": "",
         "CMAKE_BUILD_WITH_INSTALL_RPATH": {
           "type": "BOOL",
-          "value": "ON"
+          "value": "OFF"
         },
         "CMAKE_CXX_STANDARD": "20",
         "CMAKE_INSTALL_RPATH": ".",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}/sparkd",
+        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
+        "CMAKE_PREFIX_PATH": "${sourceDir}/cmake/;${sourceDir}/.venv/lib/python3.10/site-packages/pybind11/share/cmake/pybind11",
         "CMAKE_EXE_LINKER_FLAGS": "-Wno-undef",
+        "CMAKE_TOOLCHAIN_FILE": "${sourceDir}/vcpkg/scripts/buildsystems/vcpkg.cmake",
+        "DATABENTO_USE_EXTERNAL_JSON": {
+          "type": "BOOL",
+          "value": "ON"
+        },
         "EXTERNALS_ROOT": "${sourceDir}/externals/linux",
         "BUILD_SDK": {
           "type": "BOOL",
@@ -77,7 +95,7 @@
           "value": "ON"
         },
         "CCAPI_LOG_LEVEL": "Info",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/md_dev/*.conf;config/profiles/default/*.conf"
+        "CONFIG_DEFAULTS_PATH": "spark/config/profiles/md_dev/*.conf;spark/config/profiles/default/*.conf"
       }
     },
 
@@ -88,116 +106,98 @@
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Release",
         "CCAPI_LOG_LEVEL": "Warn",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/md_prod/*.conf;config/profiles/default/*.conf"
+        "CONFIG_DEFAULTS_PATH": "spark/config/profiles/md_prod/*.conf;spark/config/profiles/default/*.conf"
       }
     },
 
     {
       "name": "sparkd-debug-clang",
       "inherits": "sparkd-debug",
-      "displayName": "Debug (clang)",
+      "displayName": "Sparkd (Debug | Clang)",
       "description": "Debug build compiled w/ clang",
-      "binaryDir": "${sourceDir}/build/clang/debug",
       "cacheVariables": {
         "CMAKE_C_COMPILER": "clang",
         "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/clang/debug/sparkd"
+        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG"
       }
     },
 
     {
       "name": "sparkd-debug-gcc",
       "inherits": "sparkd-debug",
-      "displayName": "Debug (gcc)",
+      "displayName": "Sparkd (Debug | Gcc)",
       "description": "Debug build compiled w/ gcc",
-      "binaryDir": "${sourceDir}/build/gcc/debug",
       "cacheVariables": {
         "CMAKE_C_COMPILER": "gcc",
         "CMAKE_CXX_COMPILER": "g++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -Wno-stringop-overread -DDEBUG",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/gcc/debug/sparkd"
+        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -Wno-stringop-overread -DDEBUG"
       }
     },
 
     {
       "name": "sparkd-release-clang",
       "inherits": "sparkd-release",
-      "displayName": "Release (clang)",
+      "displayName": "Sparkd (Release | Clang)",
       "description": "Release build compiled w/ clang",
-      "binaryDir": "${sourceDir}/build/clang/release",
       "cacheVariables": {
         "CMAKE_C_COMPILER": "clang",
         "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/clang/release/sparkd"
+        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3"
       }
     },
 
     {
       "name": "sparkd-release-gcc",
       "inherits": "sparkd-release",
-      "displayName": "Release (gcc)",
+      "displayName": "Sparkd (Release | Gcc)",
       "description": "Release build compiled w/ gcc",
-      "binaryDir": "${sourceDir}/build/gcc/release",
       "cacheVariables": {
         "CMAKE_C_COMPILER": "gcc",
         "CMAKE_CXX_COMPILER": "g++",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers -Wno-stringop-overflow --std=c++20 -fdiagnostics-color -Wno-stringop-overread -Wno-maybe-uninitialized -fno-omit-frame-pointer -DNDEBUG -O3",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/gcc/release/sparkd"
+        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers -Wno-stringop-overflow --std=c++20 -fdiagnostics-color -Wno-stringop-overread -Wno-maybe-uninitialized -fno-omit-frame-pointer -DNDEBUG -O3"
       }
     },
 
     {
-      "name": "spark-api-server-base",
-      "hidden": true,
-      "binaryDir": "${sourceDir}/build/${presetName}",
-      "cacheVariables": {
-        "BUILD_API_SERVER": {
-          "type": "bool",
-          "value": "ON"
-        },
-        "CONFIG_DEFAULTS_PATH": "config/profiles/md_dev/*.conf;config/profiles/default/*.conf"
-      }
-    },
-
-    {
-      "name": "spark-api-server-windows",
-      "inherits": "spark",
-      "displayName": "Spark Api Server",
-      "cacheVariables": {
-        "BUILD_API_SERVER": {
-          "type": "bool",
-          "value": "ON"
-        }
-      }
-    },
-
-    {
-      "name": "spark-api-server-linux",
-      "inherits": "sparkd",
-      "displayName": "Spark Api Server",
+      "name": "spark-linux",
+      "inherits": "spark-base",
+      "displayName": "Spark",
+      "condition": {
+        "type": "equals",
+        "lhs": "${hostSystemName}",
+        "rhs": "Linux"
+      },
       "generator": "Ninja Multi-Config",
       "cacheVariables": {
+        "platform": "linux",
         "BUILD_ADMIN_WEB_APP": {
           "type": "BOOL",
           "value": "OFF"
         },
-        "BUILD_API_SERVER": {
-          "type": "bool",
-          "value": "ON"
-        },
         "BUILD_SPARKD": {
           "type": "BOOL",
           "value": "OFF"
         },
+        "CMAKE_BUILD_WITH_INSTALL_RPATH": {
+          "type": "BOOL",
+          "value": "OFF"
+        },
         "CMAKE_C_COMPILER": "clang",
         "CMAKE_CXX_COMPILER": "clang++",
         "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG",
         "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf",
-        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0"
+        "CMAKE_EXE_LINKER_FLAGS": "-Wno-undef",
+        "CMAKE_EXPORT_COMPILE_COMMANDS": {
+          "type": "BOOL",
+          "value": "ON"
+        },
+        "CMAKE_INSTALL_RPATH": ".",
+        "CMAKE_PREFIX_PATH": "${sourceDir}/cmake/;${sourceDir}/.venv/lib/python3.10/site-packages/pybind11/share/cmake/pybind11",
+        "DATABENTO_USE_EXTERNAL_JSON": {
+          "type": "BOOL",
+          "value": "ON"
+        },
+        "EXTERNALS_ROOT": "${sourceDir}/externals/linux"
       }
     },
 
@@ -217,44 +217,32 @@
       "cacheVariables": {
         "CCAPI_LOG_LEVEL": "Trace"
       }
-    },
-
-    {
-      "name": "data-stream-suite",
-      "inherits": "spark",
-      "displayName": "Data Stream Suite",
-      "description": "Data Stream utils ported over from Edge",
-      "binaryDir": "${sourceDir}/build/${presetName}",
-      "cacheVariables": {
-        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf;config/profiles/data_stream/*.conf"
-      }
     }
   ],
 
   "buildPresets": [
     {
-      "name": "spark",
+      "name": "spark-windows",
       "condition": {
         "type": "equals",
         "lhs": "${hostSystemName}",
         "rhs": "Windows"
       },
-      "hidden": true
+      "hidden": true,
+      "configurePreset": "spark-windows"
     },
 
     {
-      "name": "spark-debug",
-      "displayName": "Debug",
-      "inherits": "spark",
-      "configurePreset": "spark",
+      "name": "spark-windows-debug",
+      "displayName": "Spark (Debug)",
+      "inherits": "spark-windows",
       "configuration": "Debug"
     },
 
     {
-      "name": "spark-release",
-      "displayName": "Release",
-      "inherits": "spark",
-      "configurePreset": "spark",
+      "name": "spark-windows-release",
+      "displayName": "Spark (Release)",
+      "inherits": "spark-windows",
       "configuration": "Release"
     },
 
@@ -265,93 +253,59 @@
         "lhs": "${hostSystemName}",
         "rhs": "Linux"
       },
-      "hidden": true,
-      "targets": [
-        "data_files_dir",
-        "admin_web_app_bundle",
-        "install",
-        "libspark",
-        "rapidjson_project",
-        "server_layout",
-        "sparkd"
-      ]
+      "hidden": true
     },
 
     {
       "name": "sparkd-debug-clang",
       "configurePreset": "sparkd-debug-clang",
-      "displayName": "Debug (clang)",
+      "displayName": "Sparkd (Debug | Clang)",
       "inherits": "sparkd"
     },
 
     {
       "name": "sparkd-debug-gcc",
       "configurePreset": "sparkd-debug-gcc",
-      "displayName": "Debug (gcc)",
+      "displayName": "Sparkd (Debug | Gcc)",
       "inherits": "sparkd"
     },
 
     {
       "name": "sparkd-release-clang",
       "configurePreset": "sparkd-release-clang",
-      "displayName": "Release (clang)",
+      "displayName": "Sparkd (Release | Clang)",
       "inherits": "sparkd"
     },
 
     {
       "name": "sparkd-release-gcc",
       "configurePreset": "sparkd-release-gcc",
-      "displayName": "Release (gcc)",
+      "displayName": "Sparkd (Release | Gcc)",
       "inherits": "sparkd"
     },
 
     {
-      "name": "spark-api-server-windows",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Windows"
-      },
-      "hidden": true,
-      "configurePreset": "spark-api-server-windows"
-    },
-
-    {
-      "name": "spark-api-server-windows-debug",
-      "displayName": "Spark Api Server (Debug)",
-      "inherits": "spark-api-server-windows",
-      "configuration": "Debug"
-    },
-
-    {
-      "name": "spark-api-server-windows-release",
-      "displayName": "Spark Api Server (Debug)",
-      "inherits": "spark-api-server-windows",
-      "configuration": "Release"
-    },
-
-    {
-      "name": "spark-api-server-linux",
+      "name": "spark-linux",
       "condition": {
         "type": "equals",
         "lhs": "${hostSystemName}",
         "rhs": "Linux"
       },
       "hidden": true,
-      "configurePreset": "spark-api-server-linux"
+      "configurePreset": "spark-linux"
     },
 
     {
-      "name": "spark-api-server-linux-debug",
-      "inherits": "spark-api-server-linux",
-      "displayName": "Spark Api Server (Debug)",
+      "name": "spark-linux-debug",
+      "inherits": "spark-linux",
+      "displayName": "Spark (Linux | Debug)",
       "configuration": "Debug"
     },
 
     {
-      "name": "spark-api-server-linux-release",
-      "inherits": "spark-api-server-linux",
-      "displayName": "Spark Api Server (Release)",
+      "name": "spark-linux-release",
+      "inherits": "spark-linux",
+      "displayName": "Spark (Linux | Release)",
       "configuration": "Release"
     },
 
@@ -368,20 +322,6 @@
       "configurePreset": "sparkd-ccapi-diag",
       "displayName": "Debug (ccapi diag)",
       "inherits": "sparkd"
-    },
-
-    {
-      "name": "data-stream-suite-debug",
-      "displayName": "DataStreamSuite (Debug)",
-      "configurePreset": "data-stream-suite",
-      "configuration": "Debug"
-    },
-
-    {
-      "name": "data-stream-suite-release",
-      "displayName": "DataStreamSuite (Release)",
-      "configurePreset": "data-stream-suite",
-      "configuration": "Release"
     }
   ]
 }

Spark.Api.Server.sln

@@ -1,10 +1,11 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
+
+Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.3.32922.545
 MinimumVisualStudioVersion = 15.0.26124.0
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api", "src\client\spark_api\spark_api.csproj", "{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bts.Spark.Api", "src\cs\Bts.Spark.Api\Bts.Spark.Api.csproj", "{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_core", "src\client\spark_core\spark_core.csproj", "{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bts.Spark.Core", "src\cs\Bts.Spark.Core\Bts.Spark.Core.csproj", "{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_websocket", "src\client\spark_websocket\spark_websocket.csproj", "{3201359D-C071-4089-9EDE-B04D759F1508}"
 EndProject
@@ -14,66 +15,692 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "spark_test", "src\client\sp
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Spark.Console", "src\client\Spark.Console\Spark.Console.csproj", "{89D666E6-B500-498F-B026-4D167F68ADFC}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{267F81EF-A8AB-49FD-9F56-D7EC3C1F7C7C}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "DataStreamSuite", "DataStreamSuite", "{C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataStreamCore", "src\DataStreamSuite\DataStreamCore\DataStreamCore.csproj", "{EF26A475-6101-4C9C-A717-D60BB92A2302}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharedStreams", "src\DataStreamSuite\SharedStreams\SharedStreams.csproj", "{911B08A3-515A-441D-84C8-8A43740B5FC1}"
+EndProject
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+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.MinSizeRel|Any CPU.ActiveCfg = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.MinSizeRel|Any CPU.Build.0 = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.MinSizeRel|x86.ActiveCfg = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.MinSizeRel|x86.Build.0 = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.Release|x64.ActiveCfg = Release|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.Release|x64.Build.0 = Release|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.Release|x86.ActiveCfg = Release|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.Release|x86.Build.0 = Release|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.RelWithDebInfo|x64.ActiveCfg = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.RelWithDebInfo|x64.Build.0 = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.RelWithDebInfo|Any CPU.ActiveCfg = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.RelWithDebInfo|Any CPU.Build.0 = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.RelWithDebInfo|x86.ActiveCfg = Debug|Any CPU
+		{BC277499-8215-4F9F-B9AB-07B6391110BF}.RelWithDebInfo|x86.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Debug|x64.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Debug|x86.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.MinSizeRel|x64.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.MinSizeRel|x64.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.MinSizeRel|Any CPU.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.MinSizeRel|Any CPU.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.MinSizeRel|x86.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.MinSizeRel|x86.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Release|x64.ActiveCfg = Release|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Release|x64.Build.0 = Release|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Release|x86.ActiveCfg = Release|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.Release|x86.Build.0 = Release|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.RelWithDebInfo|x64.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.RelWithDebInfo|x64.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.RelWithDebInfo|Any CPU.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.RelWithDebInfo|Any CPU.Build.0 = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.RelWithDebInfo|x86.ActiveCfg = Debug|Any CPU
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6}.RelWithDebInfo|x86.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Debug|x64.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Debug|x86.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.MinSizeRel|x64.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.MinSizeRel|x64.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.MinSizeRel|Any CPU.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.MinSizeRel|Any CPU.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.MinSizeRel|x86.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.MinSizeRel|x86.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Release|x64.ActiveCfg = Release|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Release|x64.Build.0 = Release|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Release|x86.ActiveCfg = Release|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.Release|x86.Build.0 = Release|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.RelWithDebInfo|x64.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.RelWithDebInfo|x64.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.RelWithDebInfo|Any CPU.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.RelWithDebInfo|Any CPU.Build.0 = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.RelWithDebInfo|x86.ActiveCfg = Debug|Any CPU
+		{802ECF0B-7264-4168-95D1-158E47FB65CC}.RelWithDebInfo|x86.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Debug|x64.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Debug|x86.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.MinSizeRel|x64.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.MinSizeRel|x64.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.MinSizeRel|Any CPU.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.MinSizeRel|Any CPU.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.MinSizeRel|x86.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.MinSizeRel|x86.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Release|x64.ActiveCfg = Release|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Release|x64.Build.0 = Release|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Release|x86.ActiveCfg = Release|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.Release|x86.Build.0 = Release|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.RelWithDebInfo|x64.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.RelWithDebInfo|x64.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.RelWithDebInfo|Any CPU.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.RelWithDebInfo|Any CPU.Build.0 = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.RelWithDebInfo|x86.ActiveCfg = Debug|Any CPU
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0}.RelWithDebInfo|x86.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Debug|x64.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Debug|x86.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.MinSizeRel|x64.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.MinSizeRel|x64.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.MinSizeRel|Any CPU.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.MinSizeRel|Any CPU.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.MinSizeRel|x86.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.MinSizeRel|x86.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Release|x64.ActiveCfg = Release|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Release|x64.Build.0 = Release|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Release|x86.ActiveCfg = Release|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.Release|x86.Build.0 = Release|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.RelWithDebInfo|x64.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.RelWithDebInfo|x64.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.RelWithDebInfo|Any CPU.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.RelWithDebInfo|Any CPU.Build.0 = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.RelWithDebInfo|x86.ActiveCfg = Debug|Any CPU
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1}.RelWithDebInfo|x86.Build.0 = Debug|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{C09ED521-D2DF-40BC-A76F-EB3CB870B2F6} = {267F81EF-A8AB-49FD-9F56-D7EC3C1F7C7C}
+		{EF26A475-6101-4C9C-A717-D60BB92A2302} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{911B08A3-515A-441D-84C8-8A43740B5FC1} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{14140310-2233-430A-821B-F3058A25234B} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{43146EA8-6FCC-46B8-88B0-42F9BB5E6E0A} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{6F22DB96-6EAB-4034-99D9-287021C36F01} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{A5C33956-A41F-49B3-A41D-1082CBA59D02} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{2FE745C3-1EDF-4421-8CD7-A63EE0C1AE43} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{FDA791E0-2B91-4AD5-B91D-CF920A4C4E38} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{B945A183-2174-4ACB-B289-8A5C546656FE} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{9F6D7DE8-185B-4C1D-B809-3314D092DF28} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{6BD3F6D8-B6FC-44E8-B8FE-06352F638B9B} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{39AEA075-6457-46C0-8821-1158BE6EFA57} = {C09ED521-D2DF-40BC-A76F-EB3CB870B2F6}
+		{385C4948-E080-56A6-E29E-8B0F4913175C} = {267F81EF-A8AB-49FD-9F56-D7EC3C1F7C7C}
+		{43FB297B-7A4D-4835-A878-E6DF345B580C} = {385C4948-E080-56A6-E29E-8B0F4913175C}
+		{BC277499-8215-4F9F-B9AB-07B6391110BF} = {385C4948-E080-56A6-E29E-8B0F4913175C}
+		{C42F4CCB-9E65-4370-939A-527ACDBC4DA6} = {385C4948-E080-56A6-E29E-8B0F4913175C}
+		{802ECF0B-7264-4168-95D1-158E47FB65CC} = {385C4948-E080-56A6-E29E-8B0F4913175C}
+		{95C5F6C0-88E5-4338-9A4F-614CF6C03CC0} = {385C4948-E080-56A6-E29E-8B0F4913175C}
+		{0354655D-2394-42BB-B1D4-2D75B9BCABF1} = {385C4948-E080-56A6-E29E-8B0F4913175C}
+	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {422D1620-0166-4C26-9A81-CA8A2EB1AB58}
 	EndGlobalSection

cmake/ExportToParent.cmake

@@ -0,0 +1,7 @@
+include_guard(GLOBAL)
+
+macro(export_to_parent)
+  foreach(var IN ITEMS ${ARGN})
+    set(${var} ${${var}} PARENT_SCOPE)
+  endforeach()
+endmacro()

cmake/GitVersion.cmake

@@ -0,0 +1,48 @@
+include_guard(GLOBAL)
+
+function(get_version_from_git)
+  find_package(Git QUIET)
+  if(NOT Git_FOUND)
+    message(WARNING "Git not found")
+    return()
+  endif()
+
+  execute_process(
+    COMMAND ${GIT_EXECUTABLE} describe --tags --always
+    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    OUTPUT_VARIABLE GIT_TAG
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    RESULT_VARIABLE GIT_RESULT
+  )
+
+  if(NOT GIT_RESULT EQUAL 0)
+    message(WARNING "Failed to get git tag")
+    return()
+  endif()
+
+  execute_process(
+    COMMAND ${GIT_EXECUTABLE} rev-parse --short=7 HEAD
+    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    OUTPUT_VARIABLE GIT_COMMIT_SHORT_HASH
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+  set(PROJECT_VERSION_BUILD_METADATA ${GIT_COMMIT_SHORT_HASH})
+  set(PROJECT_VERSION_BUILD_METADATA ${GIT_COMMIT_SHORT_HASH} PARENT_SCOPE)
+
+  string(REGEX REPLACE "^v" "" CLEAN_TAG "${GIT_TAG}")
+  if(CLEAN_TAG MATCHES "^([0-9]+)\\.([0-9]+)\\.([0-9]+)(-.*)?$")
+    set(PROJECT_VERSION_MAJOR ${CMAKE_MATCH_1})
+    set(PROJECT_VERSION_MAJOR ${CMAKE_MATCH_1} PARENT_SCOPE)
+    set(PROJECT_VERSION_MINOR ${CMAKE_MATCH_2})
+    set(PROJECT_VERSION_MINOR ${CMAKE_MATCH_2} PARENT_SCOPE)
+    set(PROJECT_VERSION_PATCH ${CMAKE_MATCH_3})
+    set(PROJECT_VERSION_PATCH ${CMAKE_MATCH_3} PARENT_SCOPE)
+
+    set(PROJECT_VERSION "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}") 
+    set(PROJECT_VERSION "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}" PARENT_SCOPE)
+    set(PROJECT_VERSION_FULL "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}+${GIT_COMMIT_SHORT_HASH}")
+    set(PROJECT_VERSION_FULL "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}+${GIT_COMMIT_SHORT_HASH}" PARENT_SCOPE)
+  else()
+    message(WARNING "Tag '${CLEAN_TAG}' does not match semver format")
+  endif()
+endfunction()

cmake/InitLibrary.cmake

@@ -0,0 +1,142 @@
+include_guard(DIRECTORY)
+include(${CMAKE_SOURCE_DIR}/cmake/ExportToParent.cmake)
+include(${CMAKE_SOURCE_DIR}/cmake/InstallBasic.cmake)
+include(${CMAKE_SOURCE_DIR}/cmake/ProtobufGenerateCpp.cmake)
+include(${CMAKE_SOURCE_DIR}/cmake/SetFirstDefined.cmake)
+include(${CMAKE_SOURCE_DIR}/cmake/safe_dep_glob.cmake)
+
+function(init_library)
+  set(_options SHARED STATIC)
+  set(_one_value_args
+    NAME
+    SOURCE_DIR
+    INCLUDE_DIR
+  )
+  set(_multi_value_args)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+  if (_ARGS_SHARED AND _ARGS_STATIC)
+    message(FATAL_ERROR "Invalid args passed to init_library: cannot specify STATIC and SHARED")
+  endif()
+  set_first_defined(_name _ARGS_NAME PROJECT_NAME)
+  set_first_defined(_source_dir _ARGS_SOURCE_DIR _name)
+  set_first_defined(_include_dir _ARGS_INCLUDE_DIR _source_dir)
+
+  # Cpp sources
+  file(
+    GLOB_RECURSE ${_name}_SOURCES
+    RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
+    ${_source_dir}/*.cpp
+  )
+  # Note: cpp files inside 'tests' dir(s) are considered tests.
+  # Remove tests from main sources, and add them to test sources
+  foreach(item ${${_name}_SOURCES})
+    if(${item} MATCHES "tests/.*\.cpp$")
+      list(APPEND ${_name}_TEST_SOURCES ${item})
+    endif()
+  endforeach()
+  foreach(item ${${_name}_TEST_SOURCES})
+    list(REMOVE_ITEM ${_name}_SOURCES ${item})
+  endforeach()
+
+  # Proto sources 
+  file(
+    GLOB_RECURSE ${_name}_PROTO_SOURCES
+    RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
+    ${_source_dir}/protobufs/*.proto
+  )
+  update_deps_file("${${_name}_PROTO_SOURCES};")
+  protobuf_generate_cpp(
+    CXX_SOURCES ${_name}_CXX_PROTO_SOURCES
+    CXX_HEADERS ${_name}_CXX_PROTO_HEADERS
+    CXX_OUT_DIR ${CMAKE_CURRENT_BINARY_DIR}
+    PROTO_INCLUDE_DIRS
+      ${EXTERNALS_INCLUDE}
+      ${CMAKE_CURRENT_SOURCE_DIR}
+    PROTO_SOURCES
+      ${${_name}_PROTO_SOURCES}
+  )
+
+  export_to_parent(
+    ${_name}_SOURCES
+    ${_name}_TEST_SOURCES
+    ${_name}_PROTO_SOURCES
+    ${_name}_CXX_PROTO_SOURCES
+    ${_name}_CXX_PROTO_HEADERS
+  )
+
+  # Add main lib
+  if (_ARGS_STATIC)
+    add_library(${_name} STATIC ${${_name}_SOURCES} ${${_name}_CXX_PROTO_SOURCES})
+  elseif(_ARGS_SHARED)
+    add_library(${_name} SHARED ${${_name}_SOURCES} ${${_name}_CXX_PROTO_SOURCES})
+  else()
+    add_library(${_name} ${${_name}_SOURCES} ${${_name}_CXX_PROTO_SOURCES})
+  endif()
+  target_include_directories(
+    ${_name}
+    SYSTEM
+    BEFORE
+    PUBLIC
+      $<BUILD_INTERFACE:${EXTERNALS_ROOT}/include>
+      $<BUILD_INTERFACE:${EXTERNALS_ROOT}/include/zlib>
+  )
+  target_include_directories(
+    ${_name}
+    PUBLIC
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+  )
+  # Include protos (if any)
+  if (${_name}_PROTO_SOURCES)
+    target_include_directories(
+      ${_name}
+      PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
+    )
+  endif()
+  target_link_directories(
+    ${_name}
+    PUBLIC
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
+      $<BUILD_INTERFACE:${EXTERNALS_ROOT}/lib/$<CONFIG>>
+      $<INSTALL_INTERFACE:${CMAKE_INSTALL_LIBDIR}>
+  )
+  # Install main lib
+  foreach(_hdr ${${_name}_CXX_PROTO_HEADERS})
+    file(RELATIVE_PATH _relative_path ${CMAKE_CURRENT_BINARY_DIR} ${_hdr})
+    install(FILES ${_hdr} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${_relative_path})
+  endforeach()
+  install_basic(
+    NAME ${_name}
+    INCLUDE_DIR ${_include_dir}
+  )
+
+  # Add tests executable (if there are any)
+  if (${_name}_TEST_SOURCES AND NOT WIN32)
+    add_executable(${_name}-tests ${${_name}_TEST_SOURCES})
+
+    get_target_property(_lib_type ${_name} TYPE)
+    if (_lib_type STREQUAL "SHARED_LIBRARY")
+      # Set RPATH so the tests exe knows where to find the shared lib.
+      set_target_properties(
+        ${_name}-tests
+        PROPERTIES
+          BUILD_RPATH "$ORIGIN"
+          INSTALL_RPATH "$ORIGIN/../${CMAKE_INSTALL_LIBDIR}"
+      )
+    endif()
+
+    # Link main lib
+    target_link_directories(
+      ${_name}-tests
+      PRIVATE
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_LIBDIR}>
+    )
+    target_link_libraries(${_name}-tests PRIVATE ${_name})
+
+    # Catch2
+    find_package(Catch2 CONFIG REQUIRED COMPONENTS Catch2WithMain)
+    target_link_libraries(${_name}-tests PRIVATE Catch2::Catch2WithMain)
+  endif()
+endfunction()

cmake/InitPythonModule.cmake

@@ -0,0 +1,71 @@
+include_guard(DIRECTORY)
+include(GNUInstallDirs)
+include(${CMAKE_SOURCE_DIR}/cmake/ExportToParent.cmake)
+include(${CMAKE_SOURCE_DIR}/cmake/SetFirstDefined.cmake)
+
+function(init_python_module)
+  set(_options)
+  set(_one_value_args
+    NAME
+  )
+  set(_multi_value_args
+    SOURCES
+  )
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+  set_first_defined(_name _ARGS_NAME PROJECT_NAME)
+  set_first_defined(_sources _ARGS_SOURCES ${_name}_SOURCES)
+
+  set(module_proj ${_name}_module)
+  set(${module_proj}_SOURCES ${_sources})
+  pybind11_add_module(${module_proj} SHARED ${_sources})
+  target_link_libraries(
+    ${module_proj}
+    PUBLIC
+      pybind11::embed
+      spark
+      ${_name}
+  )
+  target_include_directories(
+    ${module_proj}
+    PRIVATE
+      $<BUILD_INTERFACE:${pybind11_INCLUDE_DIRS}>
+  )
+  target_include_directories(
+    ${module_proj}
+    PUBLIC
+      ${Python3_INCLUDE_DIRS}
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+  )
+  add_custom_command(
+    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/stubs/${_name}.pyi
+    DEPENDS ${_name} ${module_proj}
+    COMMAND PYTHONPATH=${CMAKE_CURRENT_BINARY_DIR} pybind11-stubgen --numpy-array-use-type-var --ignore-invalid-expressions '.*' ${_name}_module
+    COMMENT "Generating py stubs"
+  )
+  add_custom_target(
+    "${_name}_py_stubs"
+    ALL
+    DEPENDS
+      ${CMAKE_CURRENT_BINARY_DIR}/stubs/${_name}.pyi
+  )
+  install(
+    TARGETS ${module_proj}
+    EXPORT ${module_proj}Targets
+    RUNTIME
+      DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY
+      DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE
+      DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+  foreach(dir ${pybind11_INCLUDE_DIRS})
+    install(DIRECTORY ${dir} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+  endforeach()
+  install(
+    EXPORT ${module_proj}Targets
+    FILE ${module_proj}Targets.cmake
+    NAMESPACE ${_name}::
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${_name}
+  )
+endfunction()

cmake/InitPythonPlugin.cmake

@@ -0,0 +1,65 @@
+include_guard(DIRECTORY)
+include(GNUInstallDirs)
+
+function(init_python_plugin)
+  set(_options)
+  set(_one_value_args NAME PLUGIN_NAME)
+  set(_multi_value_args SOURCES)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+  set_first_defined(_name _ARGS_NAME PROJECT_NAME)
+  set(_plugin_name ${_ARGS_PLUGIN_NAME})
+  if (NOT DEFINED _ARGS_PLUGIN_NAME)
+    set(_plugin_name ${_name}_plugins)
+  endif()
+  set(${_plugin_name}_SOURCES ${_ARGS_SOURCES})
+  if (NOT DEFINED _ARGS_SOURCES)
+    file(
+      GLOB_RECURSE ${_plugin_name}_SOURCES
+      RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
+      ${_plugin_name}/*.py)
+  endif()
+  set(src_outs)
+  foreach(_src ${${_plugin_name}_SOURCES})
+    set(_src_in ${CMAKE_CURRENT_SOURCE_DIR}/${_src})
+    set(_src_out ${CMAKE_CURRENT_BINARY_DIR}/${_src})
+    add_custom_command(
+      OUTPUT ${_src_out}
+      COMMAND ${CMAKE_COMMAND} -E copy ${_src_in} ${_src_out}
+      DEPENDS ${_src_in}
+      COMMENT "Copying ${_plugin_name} plugin ${_src} to ${_src_out}"
+    )
+    list(APPEND src_outs ${_src_out})
+  endforeach()
+  
+  add_custom_target(copy_${_plugin_name} ALL DEPENDS ${src_outs})
+  
+  add_library(${_plugin_name} INTERFACE)
+  add_library(${_name}::${_plugin_name} ALIAS ${_plugin_name})
+  
+  set_target_properties(
+    ${_plugin_name}
+    PROPERTIES
+      INTERFACE_PYTHON_SCRIPTS_DIR
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/${_plugin_name}>$<INSTALL_INTERFACE:${CMAKE_INSTALL_BINDIR}/${_plugin_name}>
+  )
+  
+  set_target_properties(
+    ${_plugin_name}
+    PROPERTIES
+    INTERFACE_PYTHON_SCRIPTS $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/${${_plugin_name}_SOURCES}>$<INSTALL_INTERFACE:${CMAKE_INSTALL_BINDIR}/${${_plugin_name}_SOURCES}>
+  )
+  
+  install(
+    TARGETS ${_plugin_name}
+    EXPORT ${_plugin_name}Targets
+    DESTINATION ${CMAKE_INSTALL_BINDIR}
+  )
+  
+  install(
+    EXPORT ${_plugin_name}Targets
+    FILE ${_plugin_name}Targets.cmake
+    NAMESPACE ${_name}::
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${_name}
+  )
+  install(DIRECTORY ${_plugin_name} DESTINATION ${CMAKE_INSTALL_BINDIR})
+endfunction()

cmake/InstallBasic.cmake

@@ -0,0 +1,39 @@
+include_guard(DIRECTORY)
+include(GNUInstallDirs)
+include(${CMAKE_SOURCE_DIR}/cmake/PackBasic.cmake)
+include(${CMAKE_SOURCE_DIR}/cmake/SetFirstDefined.cmake)
+
+function(install_basic)
+  set(_options)
+  set(_one_value_args NAME INCLUDE_DIR)
+  set(_multi_value_args)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+  set_first_defined(_name _ARGS_NAME PROJECT_NAME)
+  set_first_defined(_include_dir _ARGS_INCLUDE_DIR _name)
+
+  file(
+    GLOB_RECURSE ${_name}_HEADERS
+    RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
+    ${_include_dir}/*.h)
+
+  target_sources(${_name}
+    PUBLIC
+      FILE_SET HEADERS FILES ${${_name}_HEADERS})
+
+  install(
+    TARGETS ${_name}
+    EXPORT ${_name}Targets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    FILE_SET HEADERS DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+  )
+
+  install(
+    EXPORT ${_name}Targets
+    FILE ${_name}Targets.cmake
+    NAMESPACE ${_name}::
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${_name})
+
+  pack_basic()
+endfunction()

cmake/PackBasic.cmake

@@ -0,0 +1,44 @@
+include_guard(DIRECTORY)
+include(CMakePackageConfigHelpers)
+include(${CMAKE_SOURCE_DIR}/cmake/SetFirstDefined.cmake)
+
+function(pack_basic)
+  set(_options)
+  set(_one_value_args NAME)
+  set(_multi_value_args)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+  set_first_defined(_name _ARGS_NAME PROJECT_NAME)
+
+  find_package(Git QUIET)
+
+  if(GIT_FOUND)
+    execute_process(
+      COMMAND ${GIT_EXECUTABLE} describe --tags --always --dirty
+      WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+      OUTPUT_VARIABLE PROJECT_VERSION
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+  endif()
+
+  if(NOT GIT_FOUND OR PROJECT_VERSION STREQUAL "")
+    set(PROJECT_VERSION "0.0.0")
+  endif()
+
+  write_basic_package_version_file(
+    "${CMAKE_CURRENT_BINARY_DIR}/${_name}ConfigVersion.cmake"
+    VERSION ${PROJECT_VERSION}
+    COMPATIBILITY AnyNewerVersion
+  )
+
+  configure_package_config_file(
+    "${CMAKE_CURRENT_SOURCE_DIR}/Config.cmake.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/${_name}Config.cmake"
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${_name}
+  )
+
+  install(
+    FILES
+      "${CMAKE_CURRENT_BINARY_DIR}/${_name}Config.cmake"
+      "${CMAKE_CURRENT_BINARY_DIR}/${_name}ConfigVersion.cmake"
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${_name})
+endfunction()

cmake/Protobuf.cmake

@@ -1,145 +0,0 @@
-set(Protobuf_PROTOC_EXECUTABLE "${SPARK_BIN}/protoc")
-set(PROTOBUF_INCLUDE_DIRS "${SPARK_INCLUDE}")
-set(PROTOBUF_STATIC_LIB "libprotobuf")
-
-function(Protobuf_Generate_Cpp SRCS HDRS)
-  set(${SRCS})
-  set(${HDRS})
-
-  foreach(FIL ${ARGN})
-    get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
-    get_filename_component(FIL_WE ${FIL} NAME_WE)
-    get_filename_component(FIL_DIR ${FIL} DIRECTORY)
-    if(FIL_DIR)
-      set(FIL_WE "${FIL_DIR}/${FIL_WE}")
-    endif()
-
-    list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc")
-    list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h")
-
-    add_custom_command(
-      OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc"
-             "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h"
-      COMMAND
-        ${Protobuf_PROTOC_EXECUTABLE} ARGS --cpp_out=${CMAKE_BINARY_DIR}/src -I
-        ${PROTOBUF_INCLUDE_DIRS} -I ${CMAKE_SOURCE_DIR}/src ${ABS_FIL}
-      DEPENDS ${ABS_FIL}
-      COMMENT "Running C++ protocol buffer compiler on ${FIL}"
-      VERBATIM)
-  endforeach()
-
-  set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE)
-
-  # remove some warnings from protobuf generated files
-  if(WIN32)
-    set_source_files_properties(${${SRCS}} PROPERTIES COMPILE_FLAGS
-                                                      "/wd4309 /wd4838")
-  else()
-    set_source_files_properties(
-      ${${SRCS}}
-      PROPERTIES
-        COMPILE_FLAGS
-        "-Wno-unused-parameter -Wno-effc++ -Wno-pedantic -Wno-sign-compare -Wno-uninitialized"
-    )
-  endif()
-
-  set(${SRCS}
-      ${${SRCS}}
-      PARENT_SCOPE)
-  set(${HDRS}
-      ${${HDRS}}
-      PARENT_SCOPE)
-endfunction()
-
-function(Service_Compiler_Generate_Cpp SRCS HDRS)
-  set(${SRCS})
-  set(${HDRS})
-
-  foreach(FIL ${ARGN})
-    get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
-    get_filename_component(FIL_WE ${FIL} NAME_WE)
-    get_filename_component(FIL_DIR ${FIL} DIRECTORY)
-    if(FIL_DIR)
-      set(FIL_WE "${FIL_DIR}/${FIL_WE}")
-    endif()
-
-    list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc")
-    list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h")
-
-    list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.client.pb.cc")
-    list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.client.pb.h")
-
-    list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.server.pb.cc")
-    list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.server.pb.h")
-
-    set(TEMPLATES
-        ${CMAKE_CURRENT_SOURCE_DIR}/api/service_compiler/templates/cpp/client.pb.cc
-        ${CMAKE_CURRENT_SOURCE_DIR}/api/service_compiler/templates/cpp/client.pb.h
-        ${CMAKE_CURRENT_SOURCE_DIR}/api/service_compiler/templates/cpp/server.pb.cc
-        ${CMAKE_CURRENT_SOURCE_DIR}/api/service_compiler/templates/cpp/server.pb.h
-    )
-
-    if(WIN32)
-      add_custom_command(
-        OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.client.pb.cc"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.client.pb.h"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.server.pb.cc"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.server.pb.h"
-        COMMAND SET PYTHONPATH=${SPARK_PYTHON}
-        COMMAND ${CMAKE_SOURCE_DIR}/.venv/Scripts/activate.bat
-        COMMAND
-          ${Protobuf_PROTOC_EXECUTABLE} ARGS --cpp_out=${CMAKE_BINARY_DIR}/src
-          --plugin=protoc-gen-service=${CMAKE_SOURCE_DIR}/src/lib/api/service_compiler/plugin.cmd
-          --service_out=lang=cpp:${CMAKE_BINARY_DIR}/src -I
-          ${PROTOBUF_INCLUDE_DIRS} -I ${CMAKE_SOURCE_DIR}/src ${ABS_FIL}
-        DEPENDS ${ABS_FIL} ${TEMPLATES}
-                ${CMAKE_CURRENT_SOURCE_DIR}/api/service_compiler/plugin.py
-        COMMENT "Running C++ service compiler on ${FIL}"
-        VERBATIM)
-    else()
-      add_custom_command(
-        OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.client.pb.cc"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.client.pb.h"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.server.pb.cc"
-               "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.server.pb.h"
-        COMMAND ${CMAKE_SOURCE_DIR}/tools/venv_exec.sh
-        ARGS
-          ${Protobuf_PROTOC_EXECUTABLE}
-          --cpp_out=${CMAKE_BINARY_DIR}/src
-          --plugin=protoc-gen-service=${CMAKE_SOURCE_DIR}/src/lib/api/service_compiler/plugin.py
-          --service_out=lang=cpp,make_file_name=${ABS_FIL}:${CMAKE_BINARY_DIR}/src
-          -I ${PROTOBUF_INCLUDE_DIRS} -I ${CMAKE_SOURCE_DIR}/src ${ABS_FIL}
-        DEPENDS ${ABS_FIL} ${TEMPLATES}
-                ${CMAKE_CURRENT_SOURCE_DIR}/api/service_compiler/plugin.py
-        COMMENT "Running C++ service compiler on ${FIL}"
-        VERBATIM)
-    endif()
-
-  endforeach()
-
-  # remove some warnings from protobuf generated files
-  if(WIN32)
-    set_source_files_properties(${${SRCS}} PROPERTIES COMPILE_FLAGS
-                                                      "/wd4309 /wd4838")
-  else()
-    set_source_files_properties(
-      ${${SRCS}}
-      PROPERTIES
-        COMPILE_FLAGS
-        "-Wno-unused-parameter -Wno-effc++ -Wno-pedantic -Wno-sign-compare -Wno-uninitialized"
-    )
-  endif()
-
-  set(${SRCS}
-      ${${SRCS}}
-      PARENT_SCOPE)
-  set(${HDRS}
-      ${${HDRS}}
-      PARENT_SCOPE)
-
-endfunction()
-

cmake/ProtobufGenerateCpp.cmake

@@ -0,0 +1,83 @@
+include_guard(GLOBAL)
+
+function(protobuf_generate_cpp)
+  set(_options)
+  set(_one_value_args
+    CXX_SOURCES
+    CXX_HEADERS
+    CXX_OUT_DIR
+    PROTOC
+  )
+  set(_multi_value_args
+    PROTO_INCLUDE_DIRS
+    PROTO_SOURCES
+  )
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+
+  if (NOT DEFINED _ARGS_PROTOC)
+    if (WIN32)
+      set(_ARGS_PROTOC "${EXTERNALS_BIN}/protoc.exe")
+    else()
+      set(_ARGS_PROTOC "${EXTERNALS_BIN}/protoc")
+    endif()
+  endif()
+  set(${_ARGS_CXX_SOURCES})
+  set(${_ARGS_CXX_HEADERS})
+
+  set(_proto_include_cli_args)
+  foreach(_dir ${_ARGS_PROTO_INCLUDE_DIRS})
+    list(APPEND _proto_include_cli_args -I ${_dir})
+  endforeach()
+
+  foreach(_fil ${_ARGS_PROTO_SOURCES})
+    get_filename_component(_abs_fil ${_fil} ABSOLUTE)
+    get_filename_component(_fil_we ${_fil} NAME_WE)
+    get_filename_component(_fil_dir ${_fil} DIRECTORY)
+    if(_fil_dir)
+      set(_fil_we "${_fil_dir}/${_fil_we}")
+    endif()
+    list(APPEND ${_ARGS_CXX_SOURCES} "${_ARGS_CXX_OUT_DIR}/${_fil_we}.pb.cc")
+    list(APPEND ${_ARGS_CXX_HEADERS} "${_ARGS_CXX_OUT_DIR}/${_fil_we}.pb.h")
+    message(STATUS "add_custom_command for ${_fil} -> ${_ARGS_CXX_OUT_DIR}/${_fil_we}.pb.h")
+    # TODO: Pass proto sources by relative path (so this fn can be called from
+    # arbitrary subdirs).
+    add_custom_command(
+      OUTPUT
+        "${_ARGS_CXX_OUT_DIR}/${_fil_we}.pb.cc"
+        "${_ARGS_CXX_OUT_DIR}/${_fil_we}.pb.h"
+      COMMAND
+        ${_ARGS_PROTOC}
+      ARGS
+        --cpp_out=${_ARGS_CXX_OUT_DIR} ${_proto_include_cli_args} ${_abs_fil}
+      DEPENDS ${_abs_fil}
+      COMMENT "Running C++ protocol buffer compiler on ${_fil}"
+      VERBATIM
+    )
+  endforeach()
+
+  set_source_files_properties(
+    ${${_ARGS_CXX_SOURCES}}
+    ${${_ARGS_CXX_HEADERS}}
+    PROPERTIES
+      GENERATED TRUE
+  )
+
+  # remove some warnings from protobuf generated files
+  if(WIN32)
+    set_source_files_properties(
+      ${${_ARGS_CXX_SOURCES}}
+      PROPERTIES
+        COMPILE_FLAGS "/wd4309 /wd4838"
+    )
+  else()
+    set_source_files_properties(
+      ${${_ARGS_CXX_SOURCES}}
+      PROPERTIES
+        COMPILE_FLAGS "-Wno-unused-parameter -Wno-effc++ -Wno-pedantic -Wno-sign-compare -Wno-uninitialized"
+    )
+  endif()
+
+  set(${_ARGS_CXX_SOURCES} ${${_ARGS_CXX_SOURCES}} PARENT_SCOPE)
+  set(${_ARGS_CXX_HEADERS} ${${_ARGS_CXX_HEADERS}} PARENT_SCOPE)
+endfunction()
+

cmake/ProtobufGenerateCppConfig.cmake

@@ -0,0 +1,61 @@
+include_guard(GLOBAL)
+
+function(protobuf_generate_cpp_config)
+  set(_options)
+  set(_one_value_args
+    PROTO_SOURCES_HEADER
+    PROTO_DEFAULTS_HEADER
+  )
+  set(_multi_value_args
+    PROTO_SOURCES
+    PROTO_DEFAULTS
+  )
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+
+  # Configure the 'config_proto_files' header. It provides an array of strings populated with the
+  # files in PROTO_SOURCES. At runtime, we use this array to generate a special 'config' proto
+  # message with fields for each message defined in said files. A global instance of this 'config'
+  # proto is then constructed, and populated with [compile-time] defaults, and [runtime] overrides
+  # (i.e., in spark.conf). Calls to `bts::config::get<T>()` retrieve the value from the field
+  # associated with type `T` in this global instance.
+  message(STATUS "PROTO_SOURCES: ${_ARGS_PROTO_SOURCES}")
+  message(STATUS "PROTO_SOURCES_HEADER: ${_ARGS_PROTO_SOURCES_HEADER}")
+  message(STATUS "PROTO_DEFAULTS_HEADER: ${_ARGS_PROTO_DEFAULTS_HEADER}")
+  if (_ARGS_PROTO_SOURCES_HEADER)
+    set(PROTO_SOURCES)
+    set(PROTO_SOURCES_CXX_ARRAY_ITEMS "")
+    foreach(_proto_path ${_ARGS_PROTO_SOURCES})
+      list(APPEND PROTO_SOURCES ${_proto_path})
+      string(APPEND PROTO_SOURCES_CXX_ARRAY_ITEMS "\"${_proto_path}\",\n")
+    endforeach()
+    list(LENGTH PROTO_SOURCES PROTO_SOURCES_LENGTH)
+    message(STATUS "CONFIGURING PROTO_SOURCES_HEADER): ${_ARGS_PROTO_SOURCES_HEADER}")
+    configure_file(${CMAKE_SOURCE_DIR}/cmake/config_proto_files.h.in ${_ARGS_PROTO_SOURCES_HEADER})
+  endif()
+
+  # Generate static defaults. Ideally, this would be a single string, but we use an array because
+  # the compiler complains if the string is longer than 65k.
+  set(_cfg_defaults_str "inline const char * config_static_defaults[] = { ")
+
+  foreach(_cfg_file_path ${_ARGS_PROTO_DEFAULTS})
+    file(READ ${_cfg_file_path} _cfg_file_content)
+    string(REPLACE "\"" "\\\"" _cfg_file_content_escaped ${_cfg_file_content})
+    string(REPLACE "\n" ";" _cfg_lines ${_cfg_file_content_escaped})
+
+    foreach(_line ${_cfg_lines})
+      string(APPEND _cfg_defaults_str "\n  \"${_line}\",")
+    endforeach(_line)
+  endforeach(_cfg_file_path)
+
+  string(APPEND _cfg_defaults_str "};")
+  set(_old_cfg_defaults_str "")
+
+  if(EXISTS ${_ARGS_PROTO_DEFAULTS_HEADER})
+    file(READ ${_ARGS_PROTO_DEFAULTS_HEADER} _old_cfg_defaults_str)
+  endif()
+
+  if(NOT _cfg_defaults_str STREQUAL _old_cfg_defaults_str)
+    file(WRITE "${_ARGS_PROTO_DEFAULTS_HEADER}" "${_cfg_defaults_str}")
+  endif()
+endfunction()
+

cmake/ProtobufGenerateFs.cmake

@@ -0,0 +1,49 @@
+include_guard(DIRECTORY)
+
+function(protobuf_generate_fs)
+  set(_options)
+  set(_one_value_args TARGET_NAME OUT_DIR PROTOC)
+  set(_multi_value_args PROTO_INCLUDE_DIRS PROTO_SOURCES)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+
+  if (NOT DEFINED _ARGS_TARGET_NAME)
+    set(_ARGS_TARGET_NAME "${PROJECT_NAME}_generate_fs_protos")
+  endif()
+  if (NOT DEFINED _ARGS_PROTOC)
+    set(_ARGS_PROTOC "${EXTERNALS_BIN}/protoc")
+  endif()
+
+  set(_proto_include_cli_args)
+  foreach(_dir ${_ARGS_PROTO_INCLUDE_DIRS})
+    list(APPEND _proto_include_cli_args -I ${_dir})
+  endforeach()
+
+  set(_outputs)
+  foreach(_proto_source ${_ARGS_PROTO_SOURCES})
+    # get_filename_component(_abs_proto_source ${_proto_source} ABSOLUTE)
+    get_filename_component(_proto_source_we ${_proto_source} NAME_WE)
+    # get_filename_component(_proto_source_dir ${_proto_source} DIRECTORY)
+    list(APPEND _outputs ${_ARGS_OUT_DIR}/${_proto_source_we}.fable.fs)
+  endforeach()
+
+  set(_venv_exec ${CMAKE_SOURCE_DIR}/tools/venv_exec.sh)
+  set(_plugin_py ${CMAKE_SOURCE_DIR}/src/lib_spark/spark/api/service_compiler/plugin.py)
+  set(_template_fs ${CMAKE_SOURCE_DIR}/src/lib_spark/spark/api/service_compiler/templates/fs/fable.fs)
+  add_custom_command(
+    OUTPUT ${_outputs}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+    COMMAND ${_venv_exec}
+      ${_ARGS_PROTOC}
+      --plugin=protoc-gen-service=${_plugin_py}
+      --service_out=lang=fs,strip_out_path=1:${_ARGS_OUT_DIR}
+      ${_proto_include_cli_args}
+      ${_ARGS_PROTO_SOURCES}
+    DEPENDS
+      ${_venv_exec}
+      ${_plugin_py}
+      ${_template_fs}
+      ${CMAKE_CURRENT_SOURCE_DIR}/package-lock.json
+      ${_ARGS_PROTO_SOURCES}
+  )
+  add_custom_target(${_ARGS_TARGET_NAME} ALL DEPENDS "${_outputs}")
+endfunction()

cmake/ProtobufGenerateJs.cmake

@@ -0,0 +1,33 @@
+include_guard(DIRECTORY)
+
+function(protobuf_generate_js)
+  set(_options)
+  set(_one_value_args TARGET_NAME OUTPUT)
+  set(_multi_value_args PROTO_INCLUDE_DIRS PROTO_SOURCES)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+
+  if (NOT DEFINED _ARGS_TARGET_NAME)
+    set(_ARGS_TARGET_NAME "${PROJECT_NAME}_generate_js_protos")
+  endif()
+
+  set(_proto_include_cli_args)
+  foreach(_dir ${_ARGS_PROTO_INCLUDE_DIRS})
+    list(APPEND _proto_include_cli_args -p ${_dir})
+  endforeach()
+
+  add_custom_command(
+    OUTPUT ${_ARGS_OUTPUT}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+    COMMAND npx
+      --no-install pbjs
+      -t json-module
+      -w commonjs
+      -o ${_ARGS_OUTPUT}
+      ${_proto_include_cli_args}
+      ${_ARGS_PROTO_SOURCES}
+    DEPENDS
+      ${CMAKE_CURRENT_SOURCE_DIR}/package-lock.json
+      ${_ARGS_PROTO_SOURCES}
+  )
+  add_custom_target(${_ARGS_TARGET_NAME} ALL DEPENDS ${_ARGS_OUTPUT})
+endfunction()

cmake/SetFirstDefined.cmake

@@ -0,0 +1,10 @@
+include_guard(GLOBAL)
+
+macro(set_first_defined RESULT)
+  foreach(_arg ${ARGN})
+    if (DEFINED ${_arg})
+      set(${RESULT} ${${_arg}})
+      break()
+    endif()
+  endforeach()
+endmacro()

cmake/SymLink.cmake

@@ -0,0 +1,49 @@
+include_guard(DIRECTORY)
+include(${CMAKE_SOURCE_DIR}/cmake/TernaryOperator.cmake)
+
+function(sym_link_dir)
+  set(_options)
+  set(_one_value_args TARGET_NAME SOURCE DEST COMMENT)
+  set(_multi_value_args)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+  add_custom_command(
+    OUTPUT ${_ARGS_DEST}
+    COMMAND ln ARGS -sf ${_ARGS_SOURCE} ${_ARGS_DEST}
+  )
+  set_ternary(_comment _ARGS_COMMENT "${_ARGS_COMMENT}" "linking dir ${_ARGS_SOURCE} -> ${_ARGS_DEST}")
+  add_custom_target(
+    ${_ARGS_TARGET_NAME} ALL
+    DEPENDS ${_ARGS_DEST}
+    COMMENT "${_comment}"
+  )
+endfunction()
+
+function(sym_link_file)
+  set(_options)
+  set(_one_value_args SOURCE DEST INSTALL_DEST)
+  set(_multi_value_args)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}" "${_multi_value_args}" ${ARGN})
+  file(
+    CREATE_LINK
+      ${_ARGS_SOURCE}
+      ${_ARGS_DEST}
+    SYMBOLIC
+  )
+  if (DEFINED _ARGS_INSTALL_DEST)
+    install(
+      FILES
+      ${_ARGS_SOURCE}
+      DESTINATION ${_ARGS_INSTALL_DEST}
+    )
+  endif()
+endfunction()
+
+function(sym_link_local_lib LIB_NAME)
+  set(_lib_file_name "${CMAKE_SHARED_LIBRARY_PREFIX}${LIB_NAME}.so")
+  file(
+    CREATE_LINK
+      "${CMAKE_BINARY_DIR}/src/lib_${LIB_NAME}/${_lib_file_name}"
+      "${CMAKE_CURRENT_BINARY_DIR}/${_lib_file_name}"
+    SYMBOLIC
+  )
+endfunction()

cmake/SymLinkPythonModule.cmake

@@ -0,0 +1,39 @@
+include_guard(DIRECTORY)
+include(${CMAKE_SOURCE_DIR}/cmake/SymLink.cmake)
+
+function(sym_link_python_module)
+  set(_options)
+  set(_one_value_args LIB_NAME MODULE_NAME PLUGIN_NAME)
+  set(_multi_value_args)
+  cmake_parse_arguments(_ARGS "${_options}" "${_one_value_args}"
+                        "${_multi_value_args}" ${ARGN})
+  if(NOT DEFINED _ARGS_LIB_NAME)
+    message(
+      FATAL_ERROR "LIB_NAME must be specified for sym_link_python_module()")
+  endif()
+  set(_lib_name ${_ARGS_LIB_NAME})
+  set(_module_name ${_ARGS_MODULE_NAME})
+  if(NOT DEFINED _ARGS_MODULE_NAME)
+    set(_module_name ${_lib_name}_module)
+  endif()
+  set(_plugin_name ${_ARGS_PLUGIN_NAME})
+  set(_deps ${_lib_name} ${_module_name})
+  if(DEFINED _ARGS_PLUGIN_NAME)
+    list(APPEND _deps ${_plugin_name} copy_${_plugin_name})
+  endif()
+  add_dependencies(${PROJECT_NAME} ${_deps})
+  sym_link_local_lib(${_lib_name})
+  set(_module_suffix cpython-310-x86_64-linux-gnu.so)
+  sym_link_file(
+    SOURCE
+    ${CMAKE_BINARY_DIR}/src/lib_${_lib_name}/${_module_name}.${_module_suffix}
+    DEST
+    ${CMAKE_CURRENT_BINARY_DIR}/${_module_name}.${_module_suffix}
+    INSTALL_DEST
+    ${CMAKE_INSTALL_BINDIR}/)
+  if(DEFINED _ARGS_PLUGIN_NAME)
+    get_target_property(plugins ${_plugin_name} INTERFACE_PYTHON_SCRIPTS_DIR)
+    sym_link_dir(TARGET_NAME ${PROJECT_NAME}_link_${_plugin_name} SOURCE
+                 ${plugins} DEST ${CMAKE_CURRENT_BINARY_DIR}/${_plugin_name})
+  endif()
+endfunction()

cmake/TernaryOperator.cmake

@@ -0,0 +1,9 @@
+include_guard(GLOBAL)
+
+macro(set_ternary RESULT CONDITION TRUE_VALUE FALSE_VALUE)
+  if(${CONDITION})
+    set(${RESULT} ${TRUE_VALUE})
+  else()
+    set(${RESULT} ${FALSE_VALUE})
+  endif()
+endmacro()

cmake/config_proto_files.h.in

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <array>
+
+namespace bts::@PROJECT_NAME@::protobufs {
+
+inline std::array<const char *, @PROTO_SOURCES_LENGTH@> config_proto_files = {
+@PROTO_SOURCES_CXX_ARRAY_ITEMS@
+};
+
+} // namespace bts::@PROJECT_NAME@::protobufs

cmake/version.h.in

@@ -0,0 +1,11 @@
+#ifndef BTS_SPARK_VERSION_H
+#define BTS_SPARK_VERSION_H
+
+#define BTS_SPARK_VERSION_MAJOR @PROJECT_VERSION_MAJOR@
+#define BTS_SPARK_VERSION_MINOR @PROJECT_VERSION_MINOR@
+#define BTS_SPARK_VERSION_PATCH @PROJECT_VERSION_PATCH@
+#define BTS_SPARK_VERSION_BUILD_METADATA @PROJECT_VERSION_BUILD_METADATA@
+#define BTS_SPARK_VERSION "@PROJECT_VERSION@"
+#define BTS_SPARK_VERSION_FULL "@PROJECT_VERSION_FULL@"
+
+#endif

cmake/vs_filters.cmake

@@ -1,24 +0,0 @@
-cmake_minimum_required(VERSION 3.5)
-
-# Explicitly set policy to convert relative paths to absolute (although this is a default policy,
-# setting it explicitly prevents a compile-warning)
-cmake_policy(SET CMP0076 NEW)
-
-# add protos to the library to facilitate source_group
-target_sources(libspark PUBLIC ${Config_Protos} ${NonConfig_Protos} ${Service_Protos})
-
-function(assign_source_group)
-  foreach(_source IN ITEMS ${ARGN})
-    if(IS_ABSOLUTE "${_source}")
-      file(RELATIVE_PATH _source_rel "${CMAKE_CURRENT_SOURCE_DIR}" "${_source}")
-    else()
-      set(_source_rel "${_source}")
-    endif()
-    get_filename_component(_source_path "${_source_rel}" PATH)
-    string(REPLACE "/" "\\" _source_path_msvc "${_source_path}")
-    source_group("${_source_path_msvc}" FILES "${_source}")
-    set(SOURCE_FILES "${_source}")
-  endforeach()
-endfunction(assign_source_group)
-
-assign_source_group(${SparkLib_Sources} ${Config_Protos} ${NonConfig_Protos} ${Service_Protos})

compose.yaml

@@ -0,0 +1,197 @@
+services:
+  sparkd:
+    volumes:
+      - ${SPARKD__DATA_DIR:-sparkd_data}:/home/bts/.local/share/bts/sparkd/data
+    build:
+      dockerfile: src/app_sparkd/Dockerfile
+      args:
+        - IMAGE=${SPARKD__IMAGE}
+        - SOURCE_DIR=${SPARKD__SOURCE_DIR}
+        - CONFIG_DIR=${SPARKD__CONFIG_DIR}
+        - PYTHON_REQUIREMENTS=${SPARKD__PYTHON_REQUIREMENTS}
+    shm_size: "${SPARKD__SHM_SIZE:-512mb}"
+    command: >
+      sh -c "
+        echo bts | sudo -S chown -R bts:bts /home/bts/.local/share/bts/sparkd/data
+        if [ -e "/home/bts/.local/share/bts/sparkd/data/logging.sparkd/log" ]; then
+          mv "/home/bts/.local/share/bts/sparkd/data/logging.sparkd/log" "/home/bts/.local/share/bts/sparkd/data/logging.sparkd/log_$(date '+%Y%m%d-%H%M')"
+        fi
+        if [ -e "/home/bts/.local/share/bts/conf/.env.local" ]; then
+          echo 'Sourcing /home/bts/.local/share/bts/conf/.env.local'
+          set -a
+          . /home/bts/.local/share/bts/sparkd/conf/.env.local
+          set +a
+        fi
+        if [ -d /home/bts/.local/share/bts/sparkd/conf/plugins ]; then
+          echo 'Copying /home/bts/.local/share/bts/sparkd/conf/plugins to runtime dir (/home/bts/bin)'
+          cp -r /home/bts/.local/share/bts/sparkd/conf/plugins /home/bts/bin/
+        fi
+        ./sparkd run"
+    env_file:
+      - .env
+      - ${SPARKD__CONFIG_DIR}/.env
+    ports:
+      - "${SPARKD__CONFIG_PORT}:${SPARKD__CONFIG_PORT}"
+      - "${SPARKD__QUICKBUS_PORT}:${SPARKD__QUICKBUS_PORT}"
+      - "${SPARKD__SIM_FIX_PORT}:${SPARKD__SIM_FIX_PORT}"
+    deploy:
+      resources:
+        limits:
+          memory: "${SPARKD__MEMORY:-4gb}"
+
+  sparkd-symbols:
+    volumes:
+      - ${SPARKD__DATA_DIR:-sparkd_data}:/home/bts/.local/share/bts/sparkd/data
+      - ${SPARKD__RUNTIME_CONF_DIR:-sparkd_conf}:/home/bts/.local/share/bts/sparkd/conf
+    build:
+      dockerfile: src/app_sparkd/Dockerfile
+      args:
+        - IMAGE=${SPARKD__IMAGE}
+        - SOURCE_DIR=${SPARKD__SOURCE_DIR}
+        - CONFIG_DIR=${SPARKD__CONFIG_DIR}
+        - PYTHON_REQUIREMENTS=${SPARKD__PYTHON_REQUIREMENTS}
+    shm_size: "${SPARKD__SHM_SIZE:-512mb}"
+    command: >
+      sh -c "
+        echo bts | sudo -S chown -R bts:bts /home/bts/.local/share/bts/sparkd
+        if [ -e "/home/bts/.local/share/bts/sparkd/data/logging.sparkd/log" ]; then
+          mv "/home/bts/.local/share/bts/sparkd/data/logging.sparkd/log" "/home/bts/.local/share/bts/sparkd/data/logging.sparkd/log_$(date '+%Y%m%d-%H%M')"
+        fi
+        ls -alh /home/bts/.local/share/bts/sparkd/conf/
+        cat /home/bts/.local/share/bts/sparkd/conf/.env.local
+        if [ -e "/home/bts/.local/share/bts/sparkd/conf/.env.local" ]; then
+          echo 'Sourcing /home/bts/.local/share/bts/sparkd/conf/.env.local'
+          set -a
+          . /home/bts/.local/share/bts/sparkd/conf/.env.local
+          set +a
+        fi
+        if [ -d /home/bts/.local/share/bts/sparkd/conf/plugins ]; then
+          echo 'Copying /home/bts/.local/share/bts/sparkd/conf/plugins to runtime dir (/home/bts/bin)'
+          cp -r /home/bts/.local/share/bts/sparkd/conf/plugins /home/bts/bin/
+        fi
+        ./sparkd run"
+    env_file:
+      - .env
+      - ${SPARKD__CONFIG_DIR}/.env
+    ports:
+      - "${SPARKD__CONFIG_PORT}:${SPARKD__CONFIG_PORT}"
+      - "${SPARKD__QUICKBUS_PORT}:${SPARKD__QUICKBUS_PORT}"
+      - "${SPARKD__SIM_FIX_PORT}:${SPARKD__SIM_FIX_PORT}"
+    deploy:
+      restart_policy:
+        condition: any
+        delay: 3s
+      resources:
+        limits:
+          memory: "${SPARKD__MEMORY:-4gb}"
+
+  sparkd-tail:
+    image: bluetradingsystems/linux_dotnet8
+    volumes:
+      - type: volume
+        read_only: true
+        source: sparkd_data
+        target: /home/bts/.local/share/bts/sparkd/data/logging.sparkd
+        volume:
+          subpath: logging.sparkd
+    command: ["tail", "-f", "/home/bts/.local/share/bts/sparkd/data/logging.sparkd/log"]
+
+  sparkd-ping-test:
+    depends_on:
+      - sparkd
+    profiles:
+      - ping-test
+    build:
+      context: .
+      dockerfile_inline: |
+        FROM bluetradingsystems/linux_dotnet8
+        USER "root"
+        RUN apt-get update && apt-get -y install iputils-ping
+    command: [ "ping", "sparkd" ]
+
+  pubsub:
+    volumes:
+      - ${PUBSUB__DATA_DIR:-pubsub_data}:/home/bts/.local/share/bts/pubsub/data
+    build:
+      dockerfile: src/DataStreamSuite/PubSubServer/Dockerfile
+      args:
+        - SOURCE_DIR=${PUBSUB__SOURCE_DIR}
+        - CONFIG_DIR=${PUBSUB__CONFIG_DIR}
+    ports:
+      - 22019:22019
+    command: >
+      sh -c "
+        echo bts | sudo -S chown -R bts:bts /home/bts/.local/share/bts/pubsub/data
+        if [ -e "/home/bts/.local/share/bts/pubsub/data/logging.PubSubServer/log" ]; then
+          mv "/home/bts/.local/share/bts/pubsub/data/logging.PubSubServer/log" "/home/bts/.local/share/bts/pubsub/data/logging.PubSubServer/log_$(date '+%Y%m%d-%H%M')"
+        fi
+        if [ -e "/home/bts/.local/share/bts/pubsub/conf/.env" ]; then
+          echo 'Sourcing /home/bts/.local/share/bts/pubsub/conf/.env'
+          set -a
+          . /home/bts/.local/share/bts/pubsub/conf/.env
+          set +a
+        fi
+        if [ -e "/home/bts/.local/share/bts/pubsub/conf/.env.local" ]; then
+          echo 'Sourcing /home/bts/.local/share/bts/pubsub/conf/.env.local'
+          set -a
+          . /home/bts/.local/share/bts/pubsub/conf/.env.local
+          set +a
+        fi
+        ./PubSubServer"
+    env_file:
+      - .env
+      - ${PUBSUB__CONFIG_DIR}/.env
+
+  md-publisher:
+    volumes:
+      - ${MD_PUBLISHER__DATA_DIR:-md_publisher_data}:/home/bts/.local/share/bts/md_publisher/data
+      - historic_md:/home/bts/.local/share/bts/md_publisher/data/databento
+    build:
+      dockerfile: src/DataStreamSuite/DataStreamPublisher/Dockerfile
+      args:
+        - SOURCE_DIR=${MD_PUBLISHER__SOURCE_DIR}
+        - CONFIG_DIR=${MD_PUBLISHER__CONFIG_DIR}
+    command: >
+      sh -c "
+        echo bts | sudo -S chown -R bts:bts /home/bts/.local/share/bts/md_publisher/data
+        if [ -e "/home/bts/.local/share/bts/md_publisher/data/logging.DataStreamPublisher/log" ]; then
+          mv "/home/bts/.local/share/bts/md_publisher/data/logging.DataStreamPublisher/log" "/home/bts/.local/share/bts/md_publisher/data/logging.DataStreamPublisher/log_$(date '+%Y%m%d-%H%M')"
+        fi
+        if [ -e "/home/bts/.local/share/bts/md_publisher/conf/.env" ]; then
+          echo 'Sourcing /home/bts/.local/share/bts/md_publisher/conf/.env'
+          set -a
+          . /home/bts/.local/share/bts/md_publisher/conf/.env
+          set +a
+        fi
+        if [ -e "/home/bts/.local/share/bts/md_publisher/conf/.env.local" ]; then
+          echo 'Sourcing /home/bts/.local/share/bts/md_publisher/conf/.env.local'
+          set -a
+          . /home/bts/.local/share/bts/md_publisher/conf/.env.local
+          set +a
+        fi
+      dockerize -wait tcp://pubsub:22019 -timeout 10s ./DataStreamPublisher"
+    env_file:
+      - .env
+      - ${MD_PUBLISHER__CONFIG_DIR}/.env
+
+  api-server:
+    depends_on:
+      - sparkd
+    ports:
+      - 8008:8008
+      - 9443:9443
+    build:
+      dockerfile: src/client/spark_api_server/Dockerfile
+    command: [ "dockerize", "-wait", "tcp://sparkd:8000", "-timeout", "10s", "./spark_api_server", "run" ]
+    environment:
+      - ASPNETCORE_ENVIRONMENT=Staging
+
+volumes:
+  sparkd_data:
+    name: "sparkd_${SPARKD__CONFIG_PORT:-8000}"
+  pubsub_data:
+    name: "pubsub_22019"
+  md_publisher_data:
+    name: "md_publisher_22019"
+  historic_md:
+    name: "historic_md"

doc/api/content/client/getting-started/services.md

@@ -124,8 +124,8 @@ service OrderService {
 ```
 ### C++ Example
 ```cpp
-#include "lib/api/public/ServiceContext.h"
-#include "lib/api/services/OrderService.client.pb.h"
+#include "spark/api/public/ServiceContext.h"
+#include "spark/api/services/OrderService.client.pb.h"
 using namespace bts::api;
 ServiceContext ctx;
 auto orders = ctx.locate<orderman::OrderService>();

doc/api/content/client/services/marketdata.md

@@ -29,9 +29,9 @@ namespace sample {
 ```
 
 ```cpp
-#include "lib/api/public/ServiceContext.h"
-#include "spark/lib/domain_model/Security.h"
-#include "lib/api/services/MarketDataService.client.pb.h"
+#include "spark/api/public/ServiceContext.h"
+#include "spark/domain_model/Security.h"
+#include "spark/api/services/MarketDataService.client.pb.h"
 #include <thread>
 
 using namespace bts::api;

docker/images/bluetradingsystems/linux_dotnet7/Dockerfile

@@ -0,0 +1,38 @@
+FROM ubuntu:22.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y pkg-config
+RUN apt-get update && apt-get install -y locales
+RUN apt-get update && apt-get install -y ca-certificates
+RUN apt-get update && apt-get install -y libssh2-1-dev
+RUN apt-get update && apt-get install -y software-properties-common
+RUN apt-get update && apt-get install -y sudo
+
+# GCC
+ARG gcc_major=13
+RUN add-apt-repository ppa:ubuntu-toolchain-r/test \
+  && apt-get update \
+  && apt-get install -y g++-$gcc_major
+
+RUN apt-get update \
+  && apt-get install -y dotnet7
+
+RUN locale-gen en_US.UTF-8
+
+ARG docker_user="bts"
+ARG docker_uid="1000"
+ARG docker_pass="bts"
+
+RUN \
+  groupadd -g "$docker_uid" "$docker_user" \
+  && useradd \
+  -m \
+  -u "$docker_uid" \
+  -g "$docker_uid" \
+  -G sudo \
+  --password "$(openssl passwd -1 "$docker_pass")" \
+  "$docker_user"
+
+USER bts
+WORKDIR /home/bts

docker/images/bluetradingsystems/linux_dotnet8/Dockerfile

@@ -0,0 +1,38 @@
+FROM ubuntu:22.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y pkg-config
+RUN apt-get update && apt-get install -y locales
+RUN apt-get update && apt-get install -y ca-certificates
+RUN apt-get update && apt-get install -y libssh2-1-dev
+RUN apt-get update && apt-get install -y software-properties-common
+RUN apt-get update && apt-get install -y sudo
+
+# GCC
+ARG gcc_major=13
+RUN add-apt-repository ppa:ubuntu-toolchain-r/test \
+  && apt-get update \
+  && apt-get install -y g++-$gcc_major
+
+RUN apt-get update \
+  && apt-get install -y dotnet8
+
+RUN locale-gen en_US.UTF-8
+
+ARG docker_user="bts"
+ARG docker_uid="1000"
+ARG docker_pass="bts"
+
+RUN \
+  groupadd -g "$docker_uid" "$docker_user" \
+  && useradd \
+  -m \
+  -u "$docker_uid" \
+  -g "$docker_uid" \
+  -G sudo \
+  --password "$(openssl passwd -1 "$docker_pass")" \
+  "$docker_user"
+
+USER bts
+WORKDIR /home/bts

docker/images/bluetradingsystems/linux_dotnet8_dev/Dockerfile

@@ -55,17 +55,19 @@ RUN \
    clangd-$clang_major
 
 # CMake
-RUN \
-   curl -fsSL https://apt.kitware.com/keys/kitware-archive-latest.asc 2> /dev/null \
-   | gpg --dearmor - \
-   | tee /usr/share/keyrings/kitware-archive-keyring.gpg > /dev/null \
-   && echo "deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ $(lsb_release -cs) main" \
-   | tee /etc/apt/sources.list.d/kitware.list > /dev/null \
-   && apt-get update \
-   && apt-get install -y cmake
+RUN set -eux \
+  && apt-get update \
+  && apt-get install -y --no-install-recommends ca-certificates curl gpg \
+  && curl -fsSL https://apt.kitware.com/keys/kitware-archive-latest.asc \
+    | gpg --dearmor -o /usr/share/keyrings/kitware-archive-keyring.gpg \
+  && echo "deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ $(lsb_release -cs) main" \
+    > /etc/apt/sources.list.d/kitware.list \
+  && apt-get update \
+  && apt-get install -y --no-install-recommends cmake \
+  && rm -rf /var/lib/apt/lists/*
 
 # Dotnet
-RUN apt-get update && apt-get install -y dotnet7
+RUN apt-get update && apt-get install -y dotnet8
 
 # Node
 ARG node_major=18
@@ -80,13 +82,39 @@ RUN mkdir -p /etc/apt/keyrings \
 # Emumba (deps)
 RUN apt-get update && apt-get -y install rapidjson-dev
 # Emumba
-COPY emumba /emumba
-RUN dpkg -i /emumba/emumba-deribit-connector-3.3.1-Linux.LICENSE_DISABLED.deb \
-    && rm -r /emumba
+ARG EMUMBA_DERIBIT_CONNECTOR_DEB_URL="https://api.bitbucket.org/2.0/repositories/bluetradesys/spark/downloads/emumba-deribit-connector-3.3.1-Linux.LICENSE_DISABLED.deb"
+RUN --mount=type=secret,id=bitbucket_access_token \
+  set -eux \
+    && apt-get update \
+    && TOKEN="$(cat /run/secrets/bitbucket_access_token)" \
+    && curl -fL -H "Authorization: Bearer ${TOKEN}" $EMUMBA_DERIBIT_CONNECTOR_DEB_URL -o /tmp/emumba-deribit-connector.deb \
+    && apt-get install -y /tmp/emumba-deribit-connector.deb \
+    && rm -f /tmp/emumba-deribit-connector.deb
 
 # Pcap
 RUN apt-get update && apt-get install -y libpcap0.8-dev
 
+# Databento (deps)
+RUN apt-get update && apt-get -y install libzstd-dev
+
+# Rakurai
+ARG RAKURAI_DEB_URL="https://api.bitbucket.org/2.0/repositories/bluetradesys/spark/downloads/rakurai-dex-connector_0.0.5_amd64.deb"
+RUN --mount=type=secret,id=bitbucket_access_token \
+  set -eux \
+    && apt-get update \
+    && TOKEN="$(cat /run/secrets/bitbucket_access_token)" \
+    && curl -fL -H "Authorization: Bearer ${TOKEN}" $RAKURAI_DEB_URL -o /tmp/rakurai.deb \
+    # Need --force-overwrite because rakuirai and emumba-deribit-connector both include the same
+    # spdlog headers.
+    && apt-get install -y -o Dpkg::Options::="--force-overwrite" /tmp/rakurai.deb \
+    && rm -f /tmp/rakuirai.deb
+
+# Docker in Docker
+RUN apt-get update && apt-get install -y \
+    docker.io \
+    docker-compose \
+    docker-compose-v2
+
 # Set up default executables (update-alternatives)
 RUN \
    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-$clang_major 100; \

requirements.txt

@@ -1,22 +1,42 @@
 astroid==2.7.3
 autopep8==1.5.7
+blinker==1.9.0
+boto3==1.37.9
+botocore==1.37.9
 certifi==2023.5.7
 charset-normalizer==3.1.0
+click==8.1.8
 colorama==0.4.4
+Flask==3.1.0
 idna==3.4
 isort==5.9.3
+itsdangerous==2.2.0
+Jinja2==3.1.6
+jmespath==1.0.1
 lazy-object-proxy==1.6.0
+MarkupSafe==3.0.2
 mccabe==0.6.1
+numpy==2.2.6
 platformdirs==2.3.0
-protobuf==4.21.12
+protobuf==6.33.4
 pybars3==0.9.7
+pybind11==3.0.1
+pybind11-stubgen==2.5.5
+pybit==5.11.0
 pycodestyle==2.7.0
 pycparser==2.20
+pycryptodome==3.23.0
 pylint==2.10.2
 PyMeta3==0.5.1
+python-dateutil==2.9.0.post0
+python-dotenv==1.0.1
 requests==2.31.0
+s3transfer==0.11.4
+six==1.17.0
 termcolor==1.1.0
 toml==0.10.2
 urllib3==2.0.3
+websocket-client==1.8.0
+Werkzeug==3.1.3
 wrapt==1.12.1
 yapf==0.31.0

spark_client.sln

@@ -1,103 +1,414 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
+
+Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
-VisualStudioVersion = 17.3.32922.545
-MinimumVisualStudioVersion = 15.0.26124.0
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api", "src\client\spark_api\spark_api.csproj", "{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}"
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{827E0CD3-B72D-47B6-A68D-7590B98EB39B}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Spark", "src\client\spark\Spark.csproj", "{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}"
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "cs", "cs", "{D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Spark.Console", "src\client\Spark.Console\Spark.Console.csproj", "{387566C6-C6F6-412C-A30C-9855BBCB4816}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Spark.Core", "src\cs\Bts.Spark.Core\Bts.Spark.Core.csproj", "{684863A1-3396-4D31-A731-C0725CF07F4E}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_core", "src\client\spark_core\spark_core.csproj", "{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Spark.Api", "src\cs\Bts.Spark.Api\Bts.Spark.Api.csproj", "{45292808-4EF3-4D4A-B3F5-B75C42EE5870}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_sdk", "src\client\spark_sdk\spark_sdk.csproj", "{6963C314-83C4-4667-B0D0-C2F7AE208C29}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Extensions.Hosting", "src\cs\Bts.Extensions.Hosting\Bts.Extensions.Hosting.csproj", "{AA57F8D9-7BD6-4161-881B-AD2CEF9A30F6}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_test", "src\client\spark_test\spark_test.csproj", "{ECD78CC5-138F-4809-A764-2358C2AC2E82}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.IO.Compression", "src\cs\Bts.IO.Compression\Bts.IO.Compression.csproj", "{28A26DF7-5F7A-43A2-A548-B55FEBCC3958}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_websocket", "src\client\spark_websocket\spark_websocket.csproj", "{3201359D-C071-4089-9EDE-B04D759F1508}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Net", "src\cs\Bts.Net\Bts.Net.csproj", "{7543386A-5EBA-4AF0-9E0F-35657B58557D}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api_server", "src\client\spark_api_server\spark_api_server.csproj", "{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}"
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "DataStreamSuite", "DataStreamSuite", "{60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PubSub", "src\DataStreamSuite\PubSub\PubSub.csproj", "{C13A5ABD-F739-4BE8-A2FE-511E989A5B43}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataStreamCore", "src\DataStreamSuite\DataStreamCore\DataStreamCore.csproj", "{F7C6F079-67BA-4899-9B43-D3F8C121D264}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ArithmeticExpressions", "src\DataStreamSuite\ArithmeticExpressions\ArithmeticExpressions.csproj", "{E60C119D-2919-4E2F-9D39-90DB1A8FF9A7}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BaseUtilities", "src\DataStreamSuite\BaseUtilities\BaseUtilities.csproj", "{ECBAA198-EC93-4174-8156-BDA5F5E95042}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BooleanExpressions", "src\DataStreamSuite\BooleanExpressions\BooleanExpressions.csproj", "{F54AE5C0-2ECA-4151-82E6-0D7EFE88FF40}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.ColumnExpressions", "src\DataStreamSuite\Bts.ColumnExpressions\Bts.ColumnExpressions.csproj", "{A898C6C3-F134-4AF0-AFB3-3834C58CC0D7}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.ColumnSortExpressions", "src\DataStreamSuite\Bts.ColumnSortExpressions\Bts.ColumnSortExpressions.csproj", "{1E296FB3-D185-4A95-A1EB-AA5B37B85C60}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataStreamExpressions", "src\DataStreamSuite\DataStreamExpressions\DataStreamExpressions.csproj", "{B6070F41-8759-448B-B56D-A7D15D489569}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataStream", "src\DataStreamSuite\DataStream\DataStream.csproj", "{B2D721AB-920C-4CD6-8DBF-6778A115A449}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharedStreams", "src\DataStreamSuite\SharedStreams\SharedStreams.csproj", "{38EE36C6-892C-4C94-8BB0-1ACB164E1F20}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "client", "client", "{C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "spark", "spark", "{42C014A0-00C5-0620-8552-38912E891A7F}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Spark", "src\client\spark\Spark.csproj", "{D432F3E9-3D2F-4623-B7B9-CEBA6701FFC3}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "spark_test", "src\client\spark_test\spark_test.csproj", "{DD00F5D5-6C2F-4FDA-AE3D-25CF01A9A224}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Spark.Console", "src\client\Spark.Console\Spark.Console.csproj", "{2B8243FF-60C6-4607-8AAE-7762D29B0A48}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Collections", "src\cs\Bts.Collections\Bts.Collections.csproj", "{00D21F82-61F4-467F-B125-268018A185E5}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Core", "src\cs\Bts.Core\Bts.Core.csproj", "{513A3F0D-46B5-4AC2-B700-8671933F6347}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Disposables", "src\cs\Bts.Disposables\Bts.Disposables.csproj", "{D419D996-9870-4FF5-82AD-08370D1C945F}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Numerics", "src\cs\Bts.Numerics\Bts.Numerics.csproj", "{697BC3A3-1A98-43D3-A6E8-BB39A05EA049}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
 		Debug|x64 = Debug|x64
-		MinSizeRel|x64 = MinSizeRel|x64
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
 		Release|x64 = Release|x64
-		RelWithDebInfo|x64 = RelWithDebInfo|x64
+		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Debug|x64.ActiveCfg = Debug|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Debug|x64.Build.0 = Debug|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.MinSizeRel|x64.ActiveCfg = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.MinSizeRel|x64.Build.0 = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Release|x64.ActiveCfg = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Release|x64.Build.0 = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Debug|x64.ActiveCfg = Debug|x64
-		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Debug|x64.Build.0 = Debug|x64
-		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.MinSizeRel|x64.ActiveCfg = Release|x64
-		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.MinSizeRel|x64.Build.0 = Release|x64
-		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Release|x64.ActiveCfg = Release|x64
-		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Release|x64.Build.0 = Release|x64
-		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x64.ActiveCfg = Debug|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x64.Build.0 = Debug|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x64.Build.0 = Debug|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x64.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x64.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Debug|x64.ActiveCfg = Debug|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Debug|x64.Build.0 = Debug|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.MinSizeRel|x64.ActiveCfg = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.MinSizeRel|x64.Build.0 = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Release|x64.ActiveCfg = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Release|x64.Build.0 = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Debug|x64.ActiveCfg = Debug|x64
-		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Debug|x64.Build.0 = Debug|x64
-		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.MinSizeRel|x64.ActiveCfg = Release|x64
-		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.MinSizeRel|x64.Build.0 = Release|x64
-		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Release|x64.ActiveCfg = Release|x64
-		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Release|x64.Build.0 = Release|x64
-		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.Debug|x64.ActiveCfg = Debug|x64
-		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.Debug|x64.Build.0 = Debug|x64
-		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.MinSizeRel|x64.Build.0 = Debug|x64
-		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.Release|x64.ActiveCfg = Release|x64
-		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.Release|x64.Build.0 = Release|x64
-		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Debug|x64.ActiveCfg = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Debug|x64.Build.0 = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.MinSizeRel|x64.Build.0 = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Release|x64.ActiveCfg = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Release|x64.Build.0 = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Debug|x64.ActiveCfg = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Debug|x64.Build.0 = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.MinSizeRel|x64.Build.0 = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Release|x64.ActiveCfg = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Release|x64.Build.0 = Release|x64
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 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {422D1620-0166-4C26-9A81-CA8A2EB1AB58}
-	EndGlobalSection
-	GlobalSection(Performance) = preSolution
-		HasPerformanceSessions = true
+	GlobalSection(NestedProjects) = preSolution
+		{D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
+		{684863A1-3396-4D31-A731-C0725CF07F4E} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
+		{45292808-4EF3-4D4A-B3F5-B75C42EE5870} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
+		{AA57F8D9-7BD6-4161-881B-AD2CEF9A30F6} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
+		{28A26DF7-5F7A-43A2-A548-B55FEBCC3958} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
+		{7543386A-5EBA-4AF0-9E0F-35657B58557D} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
+		{60E0D592-FFB3-0D0A-C4AA-E88919B48F9D} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
+		{C13A5ABD-F739-4BE8-A2FE-511E989A5B43} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{F7C6F079-67BA-4899-9B43-D3F8C121D264} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{E60C119D-2919-4E2F-9D39-90DB1A8FF9A7} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{ECBAA198-EC93-4174-8156-BDA5F5E95042} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{F54AE5C0-2ECA-4151-82E6-0D7EFE88FF40} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{A898C6C3-F134-4AF0-AFB3-3834C58CC0D7} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{1E296FB3-D185-4A95-A1EB-AA5B37B85C60} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{B6070F41-8759-448B-B56D-A7D15D489569} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{B2D721AB-920C-4CD6-8DBF-6778A115A449} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{38EE36C6-892C-4C94-8BB0-1ACB164E1F20} = {60E0D592-FFB3-0D0A-C4AA-E88919B48F9D}
+		{C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
+		{42C014A0-00C5-0620-8552-38912E891A7F} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{D432F3E9-3D2F-4623-B7B9-CEBA6701FFC3} = {42C014A0-00C5-0620-8552-38912E891A7F}
+		{DD00F5D5-6C2F-4FDA-AE3D-25CF01A9A224} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{2B8243FF-60C6-4607-8AAE-7762D29B0A48} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
+		{00D21F82-61F4-467F-B125-268018A185E5} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
+		{513A3F0D-46B5-4AC2-B700-8671933F6347} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
+		{D419D996-9870-4FF5-82AD-08370D1C945F} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
+		{697BC3A3-1A98-43D3-A6E8-BB39A05EA049} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
 	EndGlobalSection
 EndGlobal

src/DataStreamSuite/ArithmeticExpressions/ArithmeticExpressionGrammar.y

@@ -8,7 +8,6 @@
    public int Integer;
    public double Real;
    public string Identifier;
-   public DateTime DateTime; 
    public ImmutableList<IArithmeticExpression> Arguments;
    public ImmutableList<Assignment> Assignments;
    public IArithmeticExpression Argument;

src/DataStreamSuite/ArithmeticExpressions/ArithmeticExpressions.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
@@ -11,10 +11,20 @@
     <PackageReference Include="YaccLexTools" Version="1.2.2" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
+  <Choose>
+    <When Condition="'$(UseProjectRefs)' == 'true'">
+      <ItemGroup>
+        <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+        <ProjectReference Include="..\..\cs\Bts.Spark.Core\Bts.Spark.Core.csproj" />
+      </ItemGroup>
+    </When>
+    <Otherwise>
+      <ItemGroup>
+        <PackageReference Include="ExpressionCore" Version="$(SparkVersion)" />
+        <PackageReference Include="Bts.Spark.Core" Version="$(SparkVersion)" />
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
 
   <ItemGroup Label="ArithmeticExpression">
     <Scanner Include="ArithmeticExpressionTokens.lex" />

src/DataStreamSuite/BaseUtilities/BaseUtilities.csproj

@@ -1,13 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
-
+  
 </Project>

src/DataStreamSuite/BaseUtilities/Crono.cs

@@ -1,41 +1,22 @@
-using mbts.spark;
+using System.Diagnostics;
 
-using System;
-using System.Runtime;
+namespace BCG.Utilities.General;
 
-namespace BCG.Utilities.General
-{
-	/// <summary>
-	/// Summary description for Crono.
-	/// </summary>
-	public class Crono
-	{
-      public Crono()
-      {
-         myTimer = new HighPerformanceTimer();
-      }
+/// <summary>
+/// Summary description for Crono.
+/// </summary>
+public class Crono {
+   readonly Stopwatch myTimer = new();
 
-      public void start() 
-      {myTimer.start();}
+   public void start() =>
+      myTimer.Start();
 
-      public void stop()
-      {myTimer.stop();}
+   public void stop() =>
+      myTimer.Stop();
 
-      public TimeSpan time
-      {
-         get 
-         {
-            return new TimeSpan((long) (myTimer.totalMilliseconds * TimeSpan.TicksPerMillisecond));
-         }
-      }
-
-      public double miliseconds
-      {
-         get
-         {return myTimer.totalMilliseconds;}
-      }
-
-      private HighPerformanceTimer myTimer;
-	}
+   public TimeSpan time =>
+      myTimer.Elapsed;
 
+   public double miliseconds =>
+      myTimer.Elapsed.TotalMilliseconds;
 }

src/DataStreamSuite/BlueRegistry/BlueRegistry.cs

@@ -1,192 +1,192 @@
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Collections.Concurrent;
-using System.Reflection;
-using Microsoft.Win32;
-
-namespace BCG
-{
-   public enum RegistryRoot { HKCU, HKLM }
-
-   [Serializable]
-   public class BlueRegistry
-   {
-      public const string BlueSubKey = @"Software\Blue Capital Group\";
-      public static readonly string ApplicationPrefix;
-      protected string myFullPath;
-
-      public BlueRegistry(string subPath)
-      {
-         myFullPath = string.Concat(BlueRegistry.ApplicationPrefix, @"\", subPath);
-      }
-
-      public BlueRegistry(BlueRegistry parent, string subPath)
-      {
-         myFullPath = string.Concat(parent.myFullPath, @"\", subPath);
-      }
-
-      static BlueRegistry()
-      {
-         string app = "Applications";
-
-         Assembly ass = Assembly.GetEntryAssembly();
-         if (ass != null)
-         {
-            app = ass.GetName().Name;
-
-            object[] attrs = ass.GetCustomAttributes(
-               Type.GetType("System.Reflection.AssemblyTitleAttribute"), true);
-
-            if (attrs.Length > 0 && ((AssemblyTitleAttribute)attrs[0]).Title != string.Empty)
-            {
-               app = ((AssemblyTitleAttribute)attrs[0]).Title;
-            }
-         }
-
-         ApplicationPrefix = string.Concat(BlueRegistry.BlueSubKey, app);
-      }
-
-      public object getValue(string name)
-      {
-         return getValue(RegistryRoot.HKCU, name);
-      }
-
-      public object getValue(string name, object defaultValue)
-      {
-         return getValue(RegistryRoot.HKCU, name, defaultValue);
-      }
-
-      public void setValue(string name, object value)
-      {
-         setValue(RegistryRoot.HKCU, name, value);
-      }
-
-      public void deleteValue(string name)
-      {
-         deleteValue(RegistryRoot.HKCU, name);
-      }
-
-      private RegistryKey myGetRegistryKey(RegistryRoot root)
-      {
-         if (root == RegistryRoot.HKCU)
-            return Registry.CurrentUser.CreateSubKey(myFullPath);
-         else
-            return Registry.LocalMachine.CreateSubKey(myFullPath);
-      }
-
-      #region Generic Methods
-      internal virtual void setValue(RegistryRoot root, string name, object value)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            rk.SetValue(name, value);
-         }
-      }
-
-      internal virtual object getValue(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return rk.GetValue(name);
-         }
-      }
-
-      internal virtual void deleteValue(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            rk.DeleteValue(name);
-         }
-      }
-
-      internal virtual object getValue(RegistryRoot root, string name, object defaultValue)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return rk.GetValue(name, defaultValue);
-         }
-      }
-      #endregion
-
-      #region Double
-      internal virtual void setDouble(RegistryRoot root, string name, double value)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            DoubleRegistryHandler.setValue(rk, name, value);
-         }
-      }
-
-      internal virtual double getDouble(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return DoubleRegistryHandler.getValue(rk, name);
-         }
-      }
-      #endregion
-
-      #region Enum
-      internal virtual void setEnum(RegistryRoot root, string name, Enum value)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            EnumRegistryHandler.setValue(rk, name, value);
-         }
-      }
-
-      internal virtual Enum getEnum(RegistryRoot root, string name, Type enumType)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return EnumRegistryHandler.getValue(rk, name, enumType);
-         }
-      }
-      #endregion
-
-      #region Array
-      internal virtual void setArray(RegistryRoot root, string name, Array array)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            ArrayRegistryHandler.setValue(rk, name, array);
-         }
-      }
-
-      internal virtual Array getArray(RegistryRoot root, string name, Type elementType)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return ArrayRegistryHandler.getValue(rk, name, elementType);
-         }
-      }
-      #endregion
-
-      #region SortedList
-      internal virtual void setSortedList(RegistryRoot root, string name, SortedList slist)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            SortedListRegistryHandler.setValue(rk, name, slist);
-         }
-      }
-
-      internal virtual SortedList getSortedList(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return SortedListRegistryHandler.getValue(rk, name);
-         }
-      }
-
-      internal virtual void deleteSortedList(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            SortedListRegistryHandler.deleteValue(rk, name);
-         }
-      }
-      #endregion
-   }
-}
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Concurrent;
+using System.Reflection;
+using Microsoft.Win32;
+
+namespace BCG
+{
+   public enum RegistryRoot { HKCU, HKLM }
+
+   [Serializable]
+   public class BlueRegistry
+   {
+      public const string BlueSubKey = @"Software\Blue Capital Group\";
+      public static readonly string ApplicationPrefix;
+      protected string myFullPath;
+
+      public BlueRegistry(string subPath)
+      {
+         myFullPath = string.Concat(BlueRegistry.ApplicationPrefix, @"\", subPath);
+      }
+
+      public BlueRegistry(BlueRegistry parent, string subPath)
+      {
+         myFullPath = string.Concat(parent.myFullPath, @"\", subPath);
+      }
+
+      static BlueRegistry()
+      {
+         string app = "Applications";
+
+         Assembly ass = Assembly.GetEntryAssembly();
+         if (ass != null)
+         {
+            app = ass.GetName().Name;
+
+            object[] attrs = ass.GetCustomAttributes(
+               Type.GetType("System.Reflection.AssemblyTitleAttribute"), true);
+
+            if (attrs.Length > 0 && ((AssemblyTitleAttribute)attrs[0]).Title != string.Empty)
+            {
+               app = ((AssemblyTitleAttribute)attrs[0]).Title;
+            }
+         }
+
+         ApplicationPrefix = string.Concat(BlueRegistry.BlueSubKey, app);
+      }
+
+      public object getValue(string name)
+      {
+         return getValue(RegistryRoot.HKCU, name);
+      }
+
+      public object getValue(string name, object defaultValue)
+      {
+         return getValue(RegistryRoot.HKCU, name, defaultValue);
+      }
+
+      public void setValue(string name, object value)
+      {
+         setValue(RegistryRoot.HKCU, name, value);
+      }
+
+      public void deleteValue(string name)
+      {
+         deleteValue(RegistryRoot.HKCU, name);
+      }
+
+      private RegistryKey myGetRegistryKey(RegistryRoot root)
+      {
+         if (root == RegistryRoot.HKCU)
+            return Registry.CurrentUser.CreateSubKey(myFullPath);
+         else
+            return Registry.LocalMachine.CreateSubKey(myFullPath);
+      }
+
+      #region Generic Methods
+      public virtual void setValue(RegistryRoot root, string name, object value)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            rk.SetValue(name, value);
+         }
+      }
+
+      internal virtual object getValue(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return rk.GetValue(name);
+         }
+      }
+
+      internal virtual void deleteValue(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            rk.DeleteValue(name);
+         }
+      }
+
+      public virtual object getValue(RegistryRoot root, string name, object defaultValue)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return rk.GetValue(name, defaultValue);
+         }
+      }
+      #endregion
+
+      #region Double
+      internal virtual void setDouble(RegistryRoot root, string name, double value)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            DoubleRegistryHandler.setValue(rk, name, value);
+         }
+      }
+
+      internal virtual double getDouble(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return DoubleRegistryHandler.getValue(rk, name);
+         }
+      }
+      #endregion
+
+      #region Enum
+      internal virtual void setEnum(RegistryRoot root, string name, Enum value)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            EnumRegistryHandler.setValue(rk, name, value);
+         }
+      }
+
+      internal virtual Enum getEnum(RegistryRoot root, string name, Type enumType)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return EnumRegistryHandler.getValue(rk, name, enumType);
+         }
+      }
+      #endregion
+
+      #region Array
+      internal virtual void setArray(RegistryRoot root, string name, Array array)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            ArrayRegistryHandler.setValue(rk, name, array);
+         }
+      }
+
+      internal virtual Array getArray(RegistryRoot root, string name, Type elementType)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return ArrayRegistryHandler.getValue(rk, name, elementType);
+         }
+      }
+      #endregion
+
+      #region SortedList
+      internal virtual void setSortedList(RegistryRoot root, string name, SortedList slist)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            SortedListRegistryHandler.setValue(rk, name, slist);
+         }
+      }
+
+      internal virtual SortedList getSortedList(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return SortedListRegistryHandler.getValue(rk, name);
+         }
+      }
+
+      internal virtual void deleteSortedList(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            SortedListRegistryHandler.deleteValue(rk, name);
+         }
+      }
+      #endregion
+   }
+}

src/DataStreamSuite/BlueRegistry/BlueRegistry.csproj

@@ -1,10 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0-windows</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <UseWindowsForms>true</UseWindowsForms>
   </PropertyGroup>
 
 </Project>

src/DataStreamSuite/BlueRegistry/DoubleRegistryHandler.cs

@@ -1,4 +1,6 @@
 using System;
+using System.Runtime.Versioning;
+
 using Microsoft.Win32;
 
 namespace BCG
@@ -10,6 +12,7 @@ namespace BCG
          rk.SetValue (name, value.ToString ());
       }
 
+      [SupportedOSPlatform("windows")]
       public static double getValue (RegistryKey rk, string name)
       {
          object v = rk.GetValue (name);

src/DataStreamSuite/BooleanExpressions/Arguments/ArgumentComparer.cs

@@ -6,23 +6,80 @@ using Spark.Core.Collections;
 
 static class ArgumentComparer {
    public static int Compare(
-      IArgument value1, IArgument value2, IDictionary<string,object?> env) {
+      IArgument value1, IArgument value2, IDictionary<string, object?> env) {
       if (value1 is null) {
          throw new ArgumentNullException(nameof(value1));
       }
       if (value2 is null) {
          throw new ArgumentNullException(nameof(value2));
       }
-      var cmp1 = value1.Cast<IComparable>();
-      var cmp2 = value2.Cast<IComparable>();
+      var obj1 = value1.GetValue(env);
+      var obj2 = value2.GetValue(env);
+      if (obj1 is null) {
+         if (obj2 is null) {
+            return 0;
+         }
+         return -1;
+      }
+      if (obj2 is null) {
+         return 1;
+      }
+      return compareObjs(obj1, obj2);
+   }
+
+   static int compareObjs(object obj1, object obj2) {
       try {
-         var v1 = cmp1.GetValue(env);
-         var v2 = cmp2.GetValue(env);
-         return v1.GetType().IsNumeric() ?
-            new NumericComparer().Compare(v1, v2) : v1.CompareTo(v2);
+         var typ1 = obj1.GetType();
+         var typ2 = obj2.GetType();
+         bool areSameTypes = typ1 == typ2;
+         if (areSameTypes) {
+            return ((IComparable)obj1).CompareTo(obj2);
+         }
+         if (typ1.IsNumeric()) {
+            return tryCompareNumeric(obj1, obj2);
+         } else if (typ2.IsNumeric()) {
+            return -tryCompareNumeric(obj2, obj1);
+         } else if (typ1.IsEnum) {
+            if (typ2 == typeof(string)) {
+               return -((string)obj2).CompareTo(obj1.ToString());
+            }
+         } else if (typ1 == typeof(string)) {
+            return ((string)obj1).CompareTo(obj2.ToString());
+         } else if (typ1 == typeof(DateTime)) {
+            if (typ2 == typeof(TimeSpan)) {
+               return ((DateTime)obj1).Ticks.CompareTo(((TimeSpan)obj2).Ticks);
+            }
+         } else if (typ1 == typeof(TimeSpan)) {
+            if (typ2 == typeof(DateTime)) {
+               return ((TimeSpan)obj1).Ticks.CompareTo(((DateTime)obj2).Ticks);
+            }
+         }
       } catch (Exception ex) {
          Log.Ui.error($"Comparison failed: {ex}");
          throw;
       }
+      throw new ArgumentException("Failed to compare obj1 and obj2", nameof(obj1));
+   }
+
+   static int tryCompareNumeric(object numericObj1, object obj2) {
+      var typ2 = obj2.GetType();
+      if (typ2.IsNumeric()) {
+         return new NumericComparer().Compare(numericObj1, obj2);
+      } else if (typ2.IsEnum) {
+         var undTyp2 = typ2.GetEnumUnderlyingType();
+         if (undTyp2 == typeof(byte)) {
+            return new NumericComparer().Compare(numericObj1, (byte)obj2);
+         }
+         if (undTyp2 == typeof(short)) {
+            return new NumericComparer().Compare(numericObj1, (short)obj2);
+         }
+         if (undTyp2 == typeof(int)) {
+            return new NumericComparer().Compare(numericObj1, (int)obj2);
+         }
+         if (undTyp2 == typeof(long)) {
+            return new NumericComparer().Compare(numericObj1, (long)obj2);
+         }
+      }
+      throw new ArgumentException("Failed to compare numeric obj1 and obj2", nameof(obj2));
    }
 }

src/DataStreamSuite/BooleanExpressions/BooleanExpression.cs

@@ -1,19 +1,11 @@
 namespace Bts.BooleanExpressions;
 
-using bts;
-
 class BooleanExpression : IBooleanExpression {
    readonly Func<IDictionary<string, object?>, bool> evaluate;
 
    public BooleanExpression(Func<IDictionary<string, object?>, bool> evaluate) =>
       this.evaluate = evaluate;
 
-   public bool Evaluate(IDictionary<string, object?> env) {
-      try {
-         return evaluate(env);
-      } catch (Exception ex) {
-         Log.assert(false, $"BooleanExpression.Evaluate failed: {ex}");
-         throw;
-      }
-   }
+   public bool Evaluate(IDictionary<string, object?> env) =>
+      evaluate(env);
 }

src/DataStreamSuite/BooleanExpressions/BooleanExpressionTokens.lex

@@ -47,11 +47,6 @@ IsOfType                 '/'
 
 %%
 
-{StringConstant} {
-   yylval.String = yytext.Substring(1, yytext.Length - 2).Replace(@"\'", "'");
-   return (int)Token.STRING_CONSTANT;
-} 
-
 {BooleanConstant} {
    yylval.Boolean = yytext.ToLower() switch {
       "true" => true,
@@ -62,6 +57,11 @@ IsOfType                 '/'
    return (int)Token.BOOLEAN_CONSTANT;
 }
 
+{StringConstant} {
+   yylval.String = yytext.Substring(1, yytext.Length - 2).Replace(@"\'", "'");
+   return (int)Token.STRING_CONSTANT;
+} 
+
 {NullConstant} {
    yylval.Null = DBNull.Value;
    return (int)Token.NULL_CONSTANT;

src/DataStreamSuite/BooleanExpressions/BooleanExpressions.csproj

@@ -1,20 +1,30 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Google.Protobuf" Version="3.24.3" />
-    <PackageReference Include="YaccLexTools" Version="1.2.0" />
+    <PackageReference Include="YaccLexTools" Version="1.2.3" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
+  <Choose>
+    <When Condition="'$(UseProjectRefs)' == 'true'">
+      <ItemGroup>
+        <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+        <ProjectReference Include="..\..\cs\Bts.Spark.Core\Bts.Spark.Core.csproj" />
+      </ItemGroup>
+    </When>
+    <Otherwise>
+      <ItemGroup>
+        <PackageReference Include="ExpressionCore" Version="$(SparkVersion)" />
+        <PackageReference Include="Bts.Spark.Core" Version="$(SparkVersion)" />
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
   
   <ItemGroup>
     <Scanner Include="BooleanExpressionTokens.lex" />

src/DataStreamSuite/Bts.ColumnExpressions/Bts.ColumnExpressions.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
@@ -10,11 +10,20 @@
     <PackageReference Include="YaccLexTools" Version="1.2.2" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
-    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
+  <Choose>
+    <When Condition="'$(UseProjectRefs)' == 'true'">
+      <ItemGroup>
+        <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
+        <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+      </ItemGroup>
+    </When>
+    <Otherwise>
+      <ItemGroup>
+        <PackageReference Include="DataStreamCore" Version="$(SparkVersion)" />
+        <PackageReference Include="ExpressionCore" Version="$(SparkVersion)" />
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
 
   <ItemGroup Label="ColumnExpression">
     <Scanner Include="ColumnExpressionTokens.lex" />

src/DataStreamSuite/Bts.ColumnSortExpressions/Bts.ColumnSortExpressions.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
@@ -10,11 +10,20 @@
     <PackageReference Include="YaccLexTools" Version="1.2.2" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
-    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
+  <Choose>
+    <When Condition="'$(UseProjectRefs)' == 'true'">
+      <ItemGroup>
+        <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
+        <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+      </ItemGroup>
+    </When>
+    <Otherwise>
+      <ItemGroup>
+        <PackageReference Include="DataStreamCore" Version="$(SparkVersion)" />
+        <PackageReference Include="ExpressionCore" Version="$(SparkVersion)" />
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
 
   <ItemGroup Label="ColumnSortExpression">
     <Scanner Include="ColumnSortExpressionTokens.lex" />

src/DataStreamSuite/ColumnMapExpressions/ColumnMapExpressions.csproj

@@ -1,21 +1,27 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.24.3" />
     <PackageReference Include="YaccLexTools" Version="1.2.2" />
   </ItemGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
-    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
+  <Choose>
+    <When Condition="'$(UseProjectRefs)' == 'true'">
+      <ItemGroup>
+        <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+      </ItemGroup>
+    </When>
+    <Otherwise>
+      <ItemGroup>
+        <PackageReference Include="ExpressionCore" Version="$(SparkVersion)" />
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
 
   <ItemGroup Label="ColumnMapExpression">
     <Scanner Include="ColumnMapExpressionTokens.lex" />

src/DataStreamSuite/DataStream/BlueOrb/AddColumnsStream.cs

@@ -0,0 +1,11 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   [DataStreamUserRespresentation("AddColumnsStream")]
+   public class AddColumnsStream: ViewStream {
+      public AddColumnsStream(ViewStream parent_str, string add_col_expr) {
+         ViewStream rs = new BCG.AddColumnsStream(parent_str, add_col_expr);
+         mySetRealSource(rs);
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/CSVReaderStream.cs

@@ -0,0 +1,18 @@
+namespace bts.BlueOrb {
+   using System;
+
+   using BCG;
+
+   [DataStreamUserRespresentation("CSVReaderStream")]
+   public class CSVReaderStream : ViewStream {
+      public CSVReaderStream(string file_name)
+         : this(file_name, false) { }
+      public CSVReaderStream(string file_name, bool guess_schema) {
+         ViewStream rs = new BCG.CSVReaderStream(file_name);
+         if (guess_schema) {
+            rs = new SchemaGuesserStream(rs);
+         }
+         mySetRealSource(rs);
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/CSVSaverStream.cs

@@ -0,0 +1,13 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   using System;
+
+   [DataStreamUserRespresentation("CSVSaverStream")]
+   public class CSVSaverStream: ViewStream {
+      public CSVSaverStream(ViewStream parent_str, string file_name) {
+         BCG.CSVSaverStream rs = new BCG.CSVSaverStream(parent_str, file_name, true, Int32.MaxValue, false);
+         mySetRealSource(rs);
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/CountStream.cs

@@ -0,0 +1,43 @@
+namespace BCG {
+   [DataStreamUserRespresentation("CountStream")]
+   public class CountStream : ViewStream {
+      IDataPacket? myLastFiredDataPacket;
+      private IBlueTableSchema mySchema = new BlueTableSchema("count",
+         new ColumnInfo("id", 0, typeof(int)),
+         new ColumnInfo("count", 1, typeof(int)));
+      private int myId = 0;
+      private ViewStream myVS;
+
+      public CountStream(ViewStream vs) {
+         myVS = vs;
+      }
+
+      public CountStream(string tableName)
+         : this(new TableStream(tableName)) { }
+
+      protected override void myOnFirstSubscriber() {
+         myVS.onChange += new ChangeDelegate(myHandleChanges);
+      }
+      protected override void myOnLastSubscriber() {
+         myVS.onChange -= new ChangeDelegate(myHandleChanges);
+      }
+
+      private void myHandleChanges(object newValue) {
+         myFireEvent(
+            myLastFiredDataPacket =
+               myLastFiredDataPacket == null ?
+                  new DataPacket(myGetRows(newValue, ++myId), myGetRows(newValue, myId),
+                  new BlueTable(mySchema))
+                  :
+                  new DataPacket(myGetRows(newValue, ++myId), myGetRows(newValue, myId),
+                  myLastFiredDataPacket.newRows)
+            );
+      }
+
+      private IBlueRowCollection myGetRows(object dp, int id) {
+         BlueTable retVal = new BlueTable(mySchema);
+         retVal.addRow(new BlueRow(mySchema, id, ((IDataPacket)dp).newRows.Count));
+         return retVal;
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/DateTimeExpanderStream.cs

@@ -0,0 +1,40 @@
+namespace bts.BlueOrb {
+   using bts;
+
+   using BCG;
+
+   using System;
+   [DataStreamUserRespresentation("DateTimeExpanderStream")]
+   public class DateTimeExpanstionStream : ViewStream {
+      public DateTimeExpanstionStream(ViewStream parent_stream, string inp_col) {
+         Func<IBlueTableSchema, IBlueTableSchema> get_schema = (s) => {
+            IBlueTableSchema rv = s.add_column(System.TypeCode.DateTime, $"{inp_col}_date");
+            rv = rv.add_column(System.TypeCode.String, $"{inp_col}_day_of_week");
+            rv = rv.add_column(System.TypeCode.Int32, $"{inp_col}_day_of_month");
+            rv = rv.add_column(System.TypeCode.Int32, $"{inp_col}_month");
+            rv = rv.add_column(System.TypeCode.Int32, $"{inp_col}_hour");
+            rv = rv.add_column(System.TypeCode.Int32, $"{inp_col}_minute");
+            rv = rv.add_column(System.TypeCode.Int32, $"{inp_col}_seconds_of_day");
+            rv = rv.add_column(System.TypeCode.Int32, $"{inp_col}_year");
+            return rv;
+         };
+         ViewStream rs = new MapStream(parent_stream,
+         s => get_schema(s),
+         r => {
+            DateTime dt = r.get_datetime(inp_col);
+            IBlueTableSchema s = get_schema(r.schema);
+            MutableBlueRow rv = new MutableBlueRow(s, r);
+            rv.setValue($"{inp_col}_date", dt.Date);
+            rv.setValue($"{inp_col}_day_of_week", dt.DayOfWeek.ToString());
+            rv.setValue($"{inp_col}_day_of_month", dt.Day);
+            rv.setValue($"{inp_col}_month", dt.Date.Month);
+            rv.setValue($"{inp_col}_hour", dt.Hour);
+            rv.setValue($"{inp_col}_minute", dt.Minute);
+            rv.setValue($"{inp_col}_seconds_of_day", (dt - dt.Date).TotalSeconds);
+            rv.setValue($"{inp_col}_year", dt.Date.Year);
+            return rv;
+         });
+         mySetRealSource(rs);
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/FilterStream.cs

@@ -0,0 +1,164 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   using Bts.DataStreamCore;
+
+   using System;
+   using System.Text.RegularExpressions;
+
+   [DataStreamUserRespresentation("FilterStream")]
+   public class FilterStream : ViewStream {
+      public class RegExpFilter : IStreamFilter {
+         private Regex[] myRegExps;
+         private string[] myCols;
+
+         public RegExpFilter(string col, string regExp)
+            : this(new string[] { col }, new string[] { regExp }) { }
+
+         public RegExpFilter(string[] cols, string[] regExps) {
+            myCols = cols;
+            myRegExps = new Regex[regExps.Length];
+            for (int i = 0; i < regExps.Length; i++)
+               myRegExps[i] = new Regex(regExps[i]);
+         }
+
+         #region IStreamFilter Members
+         public bool filter(IBlueRow dr) {
+            for (int i = 0; i < myCols.Length; i++) {
+               var val = dr[myCols[i]];
+               var str = val is DBNull
+                  ? string.Empty
+                  : (val?.ToString() ?? string.Empty);
+               if (!myRegExps[i].IsMatch(str)) {
+                  return false;
+               }
+            }
+            return true;
+         }
+         #endregion
+      }
+      BlueTable? myLastFiredRows;
+      IBlueRowCollection? myLastReceivedRows;
+      private IStreamFilter myFilter;
+      private ViewStream myParentStream;
+      private string myFilterString;
+
+      #region constructors
+      public delegate bool OnFilter(IBlueRow r);
+      private class OnFilterWrapper : IStreamFilter {
+         public OnFilterWrapper(OnFilter f) { this.f = f; }
+
+         public bool filter(IBlueRow dr) { return f(dr); }
+
+         private OnFilter f;
+      }
+      public FilterStream(ViewStream vs, OnFilter f)
+         : this(vs, new OnFilterWrapper(f)) { }
+
+
+      public FilterStream(ViewStream vs, IStreamFilter filter) {
+         myParentStream = vs;
+         myFilter = filter;
+         myFilterString = filter.ToString() ?? string.Empty;
+         if (filter is IDynamicStreamFilter dynFilter) {
+            dynFilter.onFilterChange += myHandleFilterChange;
+         }
+      }
+
+      public FilterStream(ViewStream vs, string filterExpression)
+         : this(vs, new BooleanExpressionFilter(filterExpression)) {
+         myFilterString = filterExpression;
+      }
+
+      public FilterStream(ViewStream vs, string col, string regExp)
+         : this(vs, new RegExpFilter(col, regExp)) {
+         myFilterString = col + " , " + regExp;
+      }
+
+      public FilterStream(ViewStream vs)
+         : this(vs, new BinaryFilter(true)) {
+         myFilterString = true.ToString();
+      }
+      #endregion
+
+      #region overridden methods
+      protected override void myOnFirstSubscriber() { myParentStream.onChange += new ChangeDelegate(myHandleCallbacks); }
+
+      protected override void myOnLastSubscriber() {
+         myLastFiredRows = null;
+         myParentStream.onChange -= new ChangeDelegate(myHandleCallbacks);
+      }
+
+      protected override void myFireEvent(object o) {
+         var dp = (IDataPacket)o;
+         if (myLastValue == null || dp.addedRows.Count + dp.deletedRows.Count > 0)
+            base.myFireEvent(o);
+      }
+      #endregion
+
+      private void myHandleCallbacks(object newValue) {
+         DataPacket retVal;
+         IDataPacket arrivedPacket = (IDataPacket)newValue;
+         myLastReceivedRows = arrivedPacket.newRows;
+         if (myLastFiredRows != null) {
+            retVal = new DataPacket(myLastFiredRows, new BlueTable(myLastFiredRows.schema),
+               new BlueTable(myLastFiredRows.schema));
+            var deletedRows = new Lazy<BlueTable>(() => (BlueTable)retVal.deletedRows);
+            foreach (IBlueRow r in arrivedPacket.deletedRows) {
+               if (myLastFiredRows.containsID(r.Id())) {
+                  myLastFiredRows.deleteRow(r);
+                  deletedRows.Value.addRow(r);
+               }
+            }
+            var addedRows = new Lazy<BlueTable>(() => (BlueTable)retVal.addedRows);
+            foreach (IBlueRow r in arrivedPacket.addedRows) {
+               if (myFilter.filter(r)) {
+                  myLastFiredRows.addRow(r);
+                  addedRows.Value.addRow(r);
+               }
+            }
+         } else {
+            myLastFiredRows = new BlueTable(arrivedPacket.Schema);
+            retVal = new DataPacket(myLastFiredRows, myLastFiredRows, new BlueTable(myLastFiredRows.schema));
+            foreach (IBlueRow r in arrivedPacket.newRows)
+               if (myFilter.filter(r))
+                  myLastFiredRows.addRow(r);
+         }
+         myFireEvent(retVal);
+      }
+
+      public IStreamFilter filter {
+         set {
+            {
+               myFilter = value;
+               if (numberOfSubscribers > 0) {
+                  if (myLastReceivedRows != null) {
+                     BlueTable nRows = new BlueTable(myLastReceivedRows.schema);
+                     foreach (IBlueRow r in myLastReceivedRows)
+                        if (myFilter.filter(r))
+                           nRows.addRow(r);
+                     IBlueRowCollection dRows = new BlueTable(nRows.schema),
+                        aRows = new BlueTable(nRows.schema);
+                     BlueDataUtility.computeDifferences(nRows, myLastFiredRows, out dRows, out aRows);
+                     myLastFiredRows = nRows;
+                     myFireEvent(new DataPacket(nRows, aRows, dRows));
+                  }
+               }
+            }
+         }
+         get {            
+               return myFilter;
+         }
+      }
+
+      //public string filterString { set { filter = new BooleanExpressionFilter(value); } }
+
+      public override string ToString() {
+         return GetType().ToString() + " " + myFilterString;
+      }
+
+      private void myHandleFilterChange() {
+         filter = myFilter;
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/GroupByStream.cs

@@ -0,0 +1,142 @@
+using BCG;
+
+using Bts.DataStreamCore;
+
+using Spark.Core.Diagnostics;
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+
+namespace bts.BlueOrb {
+   [DataStreamUserRespresentation("GroupByStream")]
+   public class GroupByStream : ViewStream {
+
+      public interface INonIncGroupByEvaluator {
+         // grouped_rows
+         IBlueRowCollection? evaluate(IDictionary<int, List<IBlueRow>> grouped_rows);
+         string[]? get_group_by_cols();
+      }
+
+      private class DelNonIncGroupByEvaluator : INonIncGroupByEvaluator {
+         Func<string[]?> _groupby_cols_func;
+         Func<List<IBlueRow>, List<IBlueRow>> _evaluate_func;
+         public DelNonIncGroupByEvaluator(Func<string[]?> groupby_cols_func,
+                                          Func<List<IBlueRow>, List<IBlueRow>> evaluate_func) {
+            _groupby_cols_func = groupby_cols_func;
+            _evaluate_func = evaluate_func;
+         }
+
+         public IBlueRowCollection? evaluate(IDictionary<int, List<IBlueRow>> grouped_rows) {
+            BlueTable? rv = null;
+            foreach (var kv in grouped_rows) {
+               List<IBlueRow> g_rows = kv.Value;
+               List<IBlueRow> out_rows = _evaluate_func.Invoke(g_rows);
+               if (out_rows != null && out_rows.Count > 0) {
+                  rv = rv ?? new BlueTable(out_rows.ElementAt(0).schema);
+               }
+               if (rv != null)
+                  rv.addRows(out_rows);
+            }
+            return rv;
+         }
+
+         public string[]? get_group_by_cols() {
+            return _groupby_cols_func();
+         }
+
+      }
+      ViewStream? _main_stream;
+      INonIncGroupByEvaluator? _groupby_func;
+      BlueRowHasher? _row_hasher;
+      string[]? _groupby_cols;
+      private Stopwatch _timer = new();
+      private int _n_total_fires = 0, _n_expensive_fires = 0;
+      IDisposable? subscription;
+
+      public GroupByStream(ViewStream main_stream, INonIncGroupByEvaluator groupby_func) {
+         _main_stream = main_stream;
+         _groupby_func = groupby_func;
+         _groupby_cols = _groupby_func.get_group_by_cols();
+         _row_hasher = new BlueRowHasher(_groupby_cols == null ? 0 : _groupby_cols.Length);
+      }
+
+      public GroupByStream(ViewStream main_stream, Func<string[]?> groupby_cols_func,
+                                 Func<List<IBlueRow>, List<IBlueRow>> evaluate_func)
+                                 : this(main_stream, new DelNonIncGroupByEvaluator(groupby_cols_func, evaluate_func)) { }
+
+      public GroupByStream(ViewStream parent_str, string groupby_cols, string standard_group_by_text)
+      : this(parent_str, groupby_cols, standard_group_by_text, String.Empty) { }
+
+      // this is the main constructor that does everything
+      public GroupByStream(ViewStream parent_str, string groupby_cols, string standard_group_by_ops, string optional_sort_col) {
+         MultiRowOpHelper std_group_by = MultiRowOpHelper.parse_ops(standard_group_by_ops);
+         Func<List<IBlueRow>, List<IBlueRow>> evaluate_func = (group_rows) => {
+            if (!String.IsNullOrEmpty(optional_sort_col))
+               group_rows.Sort((r1, r2) => BlueDataUtility.compare_rows(r2, r1, optional_sort_col));
+            // this si where the group by aggregation happens
+            IBlueRow? rv = MultiRowOpHelper.group_by_compute(group_rows, std_group_by);
+            if (rv == null)
+               return new List<IBlueRow>();
+            return new IBlueRow[] { rv }.ToList();
+         };
+         ViewStream rs = new GroupByStream(parent_str, groupby_cols_func, evaluate_func);
+         mySetRealSource(rs);
+
+         string[]? groupby_cols_func() {
+            if (string.IsNullOrEmpty(groupby_cols)) {
+               return null;
+            }
+            return groupby_cols.Split(',').Select(x => x.Trim()).ToArray();
+         }
+      }
+      public GroupByStream(ViewStream parent_str, string standard_group_by_text) :
+      this(parent_str, String.Empty, standard_group_by_text) {
+      }
+
+      protected override void myOnFirstSubscriber() {
+         Log.isnull(subscription);
+         subscription = ExceptionAssert.MemberNotNull(_main_stream).Subscribe(_main_stream_onchange);
+      }
+
+      protected override void myOnLastSubscriber() {
+         subscription?.Dispose();
+         subscription = null;
+      }
+
+      private void _main_stream_onchange(object nv) {
+         Log.notnull(_groupby_func);
+         var dp = (IDataPacket)nv;
+         ///grouping together
+         _timer.Restart();
+         IDictionary<int, List<IBlueRow>> grouped_rows = (_groupby_cols == null || _groupby_cols.Length == 0) ?
+         new Dictionary<int, List<IBlueRow>>() { { 0, dp.newRows.to_list() } } :
+         BlueDataUtility.group_together(dp.newRows, _groupby_cols, ref _row_hasher);
+         _timer.Stop();
+         var groupElapsedMs = _timer.ElapsedMilliseconds;
+         if (groupElapsedMs >= 50) {
+            Log.DataFlow.info($"Time to group {dp.newRows.Count} rows into {grouped_rows.Count} groups: {_timer.ElapsedMilliseconds}ms");
+         }
+         // Log.log(bts.Log.Level.Info, bts.log.Subsystem.gen, String.Format("Time to group {0} rows into {1} groups = {2}", dp.newRows.Count, grouped_rows.Count, _timer.lastIntervalTime));
+         /// reducing
+         _timer.Restart();
+         IBlueRowCollection? total_state = _groupby_func.evaluate(grouped_rows);
+         if (total_state == null)
+            // mayeb returna n empty table ?
+            return;
+         _timer.Stop();
+         var applyElapsedMs = _timer.ElapsedMilliseconds;
+         _n_total_fires++;
+         if (applyElapsedMs >= 50) {
+            _n_expensive_fires++;
+            Log.DataFlow.info(
+               $"Time to evaluate {grouped_rows.Count} groups {_timer.ElapsedMilliseconds}ms, ratio {_n_expensive_fires}/{_n_total_fires}");
+         }
+         var deletedRows = myLastValue is null
+            ? new BlueTable(total_state.schema)
+            : ((IDataPacket)myLastValue).newRows;
+         myFireEvent(new DataPacket(total_state, total_state, deletedRows));
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/Join/SimpleJoinStream.cs

@@ -0,0 +1,204 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   using Bts.DataStream;
+
+   using Spark.Core.Diagnostics;
+
+   using System;
+   using System.Collections.Generic;
+   using System.Diagnostics.CodeAnalysis;
+   using System.Linq;
+
+   using RowHash = System.Int32;
+
+   [DataStreamUserRespresentation("JoinStream")]
+   public class SimpleJoinStream : ViewStream {
+      public class JoinBookkeepingData {
+         // initialized in cons
+         readonly string[] _join_col_names;
+         private readonly BlueRowHasher _hasher;
+         // initialized on first udpate         
+         IBlueTableSchema? _schema;
+         int[]? _join_cols;
+         private IDictionary<RowHash, List<IBlueRow>> _hash_row_map = new Dictionary<RowHash, List<IBlueRow>>();
+
+         public JoinBookkeepingData(ViewStream vs, List<string> join_cols, BlueRowHasher row_hasher) {
+            _join_col_names = join_cols.Where(c => !string.IsNullOrEmpty(c)).ToArray();
+            _hasher = row_hasher;
+         }
+
+         [NotNullIfNotNull(nameof(_schema))]
+         public IBlueTableSchema? schema => _schema;
+
+         public IDictionary<RowHash, List<IBlueRow>> rows => _hash_row_map;
+
+         [MemberNotNull(nameof(_schema))]
+         public IBlueTableSchema RequireSchema() =>
+            ExceptionAssert.MemberNotNull(_schema);
+
+         public List<IBlueRow>? get_matching_rows(int hash) =>
+            _hash_row_map.GetValueOrDefault(hash);
+
+         private RowHash _get_hash(IBlueRow r) {
+            if (_join_cols == null || _join_cols.Length == 0) {
+               return 0;
+            }
+            return _hasher.get_hash(r, _join_cols);
+         }
+
+         public void update_data(IDataPacket dp) {
+            if (!ready) {
+               _schema = dp.newRows.schema;
+               _join_cols = _schema.ResolveIndices(_join_col_names);
+            }
+            _hash_row_map.Clear();
+            foreach (IBlueRow r in dp.newRows) {
+               int hash = _get_hash(r);
+               if (!_hash_row_map.TryGetValue(hash, out var hash_rows)) {
+                  hash_rows = new List<IBlueRow>();
+                  _hash_row_map.Add(hash, hash_rows);
+               }
+               hash_rows.Add(r);
+            }
+         }
+
+         [MemberNotNullWhen(true, nameof(_schema))]
+         public bool ready {
+            get {
+               return _schema != null;
+            }
+         }
+
+      }
+
+      private ViewStream _ls, _rs;
+      private JoinBookkeepingData _ldata, _rdata;
+      IBlueTableSchema? _schema;
+
+      public SimpleJoinStream(ViewStream ls, string ljc, ViewStream rs, string rjc) :
+         this(ViewStreamDatabase.instance, ls, ljc, rs, rjc) { }
+
+      public SimpleJoinStream(ViewStreamDatabase vsd, ViewStream ls, string ljc, ViewStream rs, string rjc) {
+         _ls = ls;
+         _rs = rs;
+         List<string> lj_col_list = ljc.Split(',').Where(x => !String.IsNullOrEmpty(x)).ToList();
+         List<string> rj_col_list = rjc.Split(',').Where(x => !String.IsNullOrEmpty(x)).ToList();
+         Log.assert(lj_col_list.Count == rj_col_list.Count);
+         int n_cols = lj_col_list.Count;
+         BlueRowHasher hasher = new BlueRowHasher(n_cols);
+         _ldata = new JoinBookkeepingData(ls, lj_col_list, hasher);
+         _rdata = new JoinBookkeepingData(rs, rj_col_list, hasher);
+      }
+
+      protected override void myOnFirstSubscriber() {
+         _ls.onChange += _ls_onchange;
+         _rs.onChange += _rs_onchange;
+      }
+
+      private void _ls_onchange(object dp_obj) {
+         var dp = (IDataPacket)dp_obj;
+         _ldata.update_data(dp);
+         _form_and_fire();
+      }
+
+      private void _rs_onchange(object dp_obj) {
+         var dp = (IDataPacket)dp_obj;
+         _rdata.update_data(dp);
+         _form_and_fire();
+      }
+
+      protected override void myOnLastSubscriber() {
+         _ls.onChange -= _ls_onchange;
+         _rs.onChange -= _rs_onchange;
+      }
+
+      [MemberNotNull(nameof(_schema))]
+      private void _build_schema() {
+         if (_schema != null)
+            return;
+         var lschema = Log.notnull(_ldata.schema);
+         var rschema = Log.notnull(_rdata.schema);
+         var cis = new List<ColumnInfo> {
+            new("id", 0, TypeCode.Int32)
+         };
+         foreach (ColumnInfo ci in lschema.columnInfo) {
+            string col_name = rschema.contains_column(ci.colName) ? $"left_{ci.colName}" : ci.colName;
+            cis.Add(new ColumnInfo(col_name, cis.Count, ci.colType));
+         }
+         foreach (ColumnInfo ci in rschema.columnInfo) {
+            string col_name = lschema.contains_column(ci.colName) ? $"right_{ci.colName}" : ci.colName;
+            cis.Add(new ColumnInfo(col_name, cis.Count, ci.colType));
+         }
+         _schema = new BlueTableSchema($"{lschema.tableName}_join_{rschema.tableName}", cis.ToArray());
+      }
+
+      private void _form_and_fire() {
+         if (!_ldata.ready || !_rdata.ready)
+            return;
+         _build_schema();
+         List<object[]> res_rows = new List<object[]>();
+
+         // this is where the join happens
+         foreach (var kv in _ldata.rows) {
+            RowHash hash = kv.Key;
+            List<IBlueRow> l_rows = kv.Value;
+            List<IBlueRow>? r_rows = _rdata.get_matching_rows(hash);
+
+            foreach (IBlueRow lr in l_rows) {
+               if (r_rows != null) {
+                  foreach (IBlueRow r in r_rows) {
+                     object[] rowvals = build_row_array(res_rows.Count, lr);
+                     copy_row(rowvals, r, false);
+                     res_rows.Add(rowvals);
+                  }
+               } else {
+                  object[] rowvals = build_row_array(res_rows.Count, lr);
+                  res_rows.Add(rowvals);
+               }
+            }
+         }
+         BlueTable rv = new BlueTable(_schema);
+         foreach (object[] rval in res_rows) {
+            rv.addRow(new BlueRow(_schema, rval));
+         }
+         var dp = BlueDataUtility.build_dp(rv, myLastValue as IDataPacket);
+         myFireEvent(dp);
+
+         object[] build_row_array(int id, IBlueRow l_row) {
+            object[] rv = new object[_schema.columnNames.Length];
+            for (int i = 0; i < _schema.columnNames.Length; i++) {
+               rv[i] = DBNull.Value;
+            }
+            rv[0] = id;
+            copy_row(rv, l_row, true);
+            return rv;
+         }
+
+         void copy_row(object?[] rval, IBlueRow r, bool is_left) {
+            int offset = 1;
+            JoinBookkeepingData sdata = _ldata;
+            if (is_left) {
+               offset = 1;
+               sdata = _ldata;
+            } else {
+               sdata = _rdata;
+               offset = 1 + _ldata.RequireSchema().columnInfo.Length;
+            }
+            for (int i = 0; i < sdata.RequireSchema().columnInfo.Length; i++) {
+               rval[offset + i] = r[i];
+            }
+         }
+      }
+   }
+
+   [DataStreamUserRespresentation("FullJoinStream")]
+   public class FullJoinStream : ViewStream {
+      public FullJoinStream(ViewStream l_str, string ljcs, ViewStream r_str, string rjcs) {
+         ViewStream js = new SimpleJoinStream(l_str, ljcs, r_str, rjcs);
+         ViewStream rs = new bts.BlueOrb.FilterStream(js, r => !DBNull.Value.Equals(r["right_id"]));
+         mySetRealSource(rs);
+      }
+   }
+
+}

src/DataStreamSuite/DataStream/BlueOrb/JsonSaverStream.cs

@@ -0,0 +1,28 @@
+//namespace bts.Blueorb {
+//   using BCG;
+
+//   public class JsonSaverStream : ViewStream {
+//      private ViewStream _stream;
+//      private string _file_name;
+//      public JsonSaverStream(ViewStream vs, string file_name) {
+//         _stream = vs;
+//         _file_name = file_name;
+//      }
+
+//      protected override void myOnFirstSubscriber() {
+//         _stream.onChange += _on_data;
+//      }
+
+//      private void _on_data(object dp_obj) {
+//         if (dp_obj == null) {
+//            return;
+//         }
+//         DataPacket dp = dp_obj as DataPacket;
+//         dp.newRows.write_to_json_file(dp.newRows, _file_name);
+//      }
+
+//      protected override void myOnLastSubscriber() {
+//         _stream.onChange -= _on_data;
+//      }
+//   }
+//}

src/DataStreamSuite/DataStream/BlueOrb/LiteralStream.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+using Amazon.Runtime.Internal.Util;
+
+using BCG;
+using BCG.Utilities;
+
+using bts;
+
+namespace bts.BlueOrb{
+   public class LiteralStream : ViewStream {
+
+      public static List<Tuple<ColumnInfo, object>> parse_columns(string key_value_pairs) {
+         List<Tuple<ColumnInfo, object>> rv = new List<Tuple<ColumnInfo, object>>();
+         string[] pairs = key_value_pairs.Split(' ');
+         foreach (string p in pairs) {
+            string[] kvp = p.Split(':');
+            string col_name = kvp[0];
+            string val = kvp[1];
+            var tup = BlueDataUtility.guess_type(val);
+            var ci = new ColumnInfo(col_name, rv.Count, tup.Item1);
+            rv.Add(Tuple.Create(ci, tup.Item2));
+         }
+         return rv;
+      }
+
+      //literal("table1", "x:123, y:1.001, z:abc;x:123, y:1.001, z:abc")
+      // col_name: col_value ... ; col_name: col_value
+      public LiteralStream(string table_name, string rows) {
+         Func<string, int, IBlueRow> get_row = (json_row, id) => {
+            Dictionary<string, object> map = new Dictionary<string, object>();
+            string[] toks = json_row.Split(',', StringSplitOptions.TrimEntries);
+            //Logger.assert(col_vals.Length == 2);
+            foreach (string t in toks) {
+               var col_vals = t.Split(':', StringSplitOptions.TrimEntries);
+               string col = col_vals[0];
+               string val = col_vals[1];
+               map.Add(col, val);
+            }
+            map["id"] = id;
+            return new BlueRow(map);
+         };
+         string[] row_arr = rows.Split(';', StringSplitOptions.TrimEntries);
+         BlueTable table = null;
+         foreach (string json_string in row_arr) {
+            IBlueRow r = //BlueDataUtility.convert_json_to_row(json_string, table == null ? 0 : table.Count);
+            get_row(json_string, table == null ? 0 : table.Count);
+            table = table ?? new BlueTable(r.schema);
+            table.addRow(r);
+         }
+         ViewStream str = new BlueTableStream(table);
+         str = new SchemaGuesserStream(str);
+         mySetRealSource(str);
+      }
+
+      public LiteralStream(string tableName, string schema, string value) {
+         string[] columns = schema.Split(' ');
+
+
+         ColumnInfo[] ci = new ColumnInfo[columns.Length + 1];
+         ci[0] = new ColumnInfo("id", 0, typeof(int));
+         int n = 1;
+         foreach (string c in columns) {
+            string[] columnAndType = c.Split('/');
+            if (columnAndType.Length == 1)
+               ci[n] = new ColumnInfo(c, n, typeof(double));
+            else
+               ci[n] = new ColumnInfo(columnAndType[0], n, Type.GetType("System." + columnAndType[1], true));
+            n++;
+         }
+
+
+         BlueTable t = new BlueTable(new BlueTableSchema(tableName, ci));
+         string[] rows = value.Split(';');
+         n = 0;
+         foreach (string r in rows)
+            try {
+               if (r == string.Empty)
+                  continue;
+               t.addRow(
+                  BlueDataUtility.createRowFromCSVFileRow(r, t.schema, ++n));
+            } catch (Exception e) {
+               throw (new Exception("Error occured at line: " + n.ToString() + " " + e.Message));
+            }
+
+         mySetRealSource(new BlueRowCollectionStaticStream(t));
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/MillisecondStream.cs

@@ -0,0 +1,89 @@
+using System;
+
+using BCG.Utilities.General;
+using BCG;
+using bts;
+
+namespace bts.BlueOrb {
+   [DataStreamUserRespresentation("MillisecondStream")]
+   public class MillisecondStream : ViewStream, IWorker {
+      private DateTime _last_fire_time = DateTime.MinValue;
+      private readonly TimeSpan _period;
+      private readonly int _size;
+      private readonly ViewStreamDatabase _vsd;
+      private IBlueTableSchema _schema;
+      private bts.CircularBufferTable _table;
+
+      public MillisecondStream(int interval_msecs, int size)
+      : this(ViewStreamDatabase.instance, interval_msecs, size) {
+      }
+
+      public MillisecondStream(ViewStreamDatabase vsd, int interval_msecs, int size) {
+         _vsd = vsd;
+         _period = TimeSpan.FromMilliseconds(interval_msecs);
+         _size = size;
+         _schema = BlueDataUtility.form_schema("Milliseconds",
+               Tuple.Create("id", TypeCode.Int32),
+               Tuple.Create("time", TypeCode.DateTime),
+               Tuple.Create("display_time", TypeCode.String));
+         _table = new CircularBufferTable(_schema, _size);
+      }
+
+      protected override void myOnFirstSubscriber() {
+         _vsd.addWorker(this);
+      }
+
+      protected override void myOnLastSubscriber() {
+         _vsd.removeWorker(this);
+      }
+
+      private int _id = 0;
+      public void doWork() {
+         if (DateTime.Now - _last_fire_time >= _period) {
+            _last_fire_time = DateTime.Now;
+            IBlueRow nr = new BlueRow(_schema, _id++, _last_fire_time,
+            _last_fire_time.ToString("yyyy-MM-dd HH:mm:ss.fff"));
+            _table.add_row(nr);
+            var dp = BlueDataUtility.build_dp_inc(_table, myLastValue as DataPacket);
+            myFireEvent(dp);
+         }
+      }
+   }
+   internal class MSecondStream : TimeUnitStream {
+      public MSecondStream(int intervalInms, int size)
+         : base(DateTime.Now, new TimeSpan(0, 0, 0, 0, intervalInms), size, ViewStreamDatabase.instance) { }
+
+      protected override DateTime myRoundTime(DateTime dt) { return dt; }
+   }
+
+   internal class DisplayableMillisecondStream : ViewStream, IStreamMapper {
+      private IBlueTableSchema mySchema = new BlueTableSchema("ms",
+                                                               new ColumnInfo("id", 0, typeof(int)),
+                                                               new ColumnInfo("time", 1, typeof(string)));
+      public DisplayableMillisecondStream(int intervalInMs, int sz) {
+         mySetRealSource(new MapStream(new MSecondStream(intervalInMs, sz), this));
+      }
+      #region IStreamMapper Members
+
+      public IBlueTableSchema getOutputSchema(IBlueTableSchema inputSchema) {
+         return mySchema;
+      }
+
+      #endregion
+
+      #region IDynamicStreamMapper Members
+
+      public IBlueRow map(IBlueRow row) {
+         DateTime time = row.get_datetime("time");
+         var time_txt = time.ToString("yyyy-MM-dd HH:mm:ss.fff");
+         return new BlueRow(mySchema, row["id"], time_txt);
+      }
+
+      #endregion
+
+      private string myToString(DateTime dt) {
+         string sep = ":";
+         return dt.Hour + sep + dt.Minute + sep + dt.Second + sep + dt.Millisecond;
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/MultiRowOpHelper.cs

@@ -0,0 +1,168 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   using System;
+   using System.Collections.Generic;
+   using System.Linq;
+   //using MathNet.Numerics.Statistics;
+
+
+   public enum MultiRowOp {
+      Mean,
+      Median,
+      Mode,
+      Range,
+      StdDev,
+      Max,
+      Min,
+      First,
+      Last,
+      Sum,
+      EdgeDiff,
+      EdgeDiffPercentage,
+   }
+   public class MultiRowOpHelper {
+      // input + op
+      public readonly List<Tuple<string, MultiRowOp>> operations;
+
+      public static MultiRowOpHelper parse_ops(string text) {
+         // text is inp_col: op, inp_col: op, inp_col:op
+         // ex: "open:First, close:Last, high:Max, low:Min, volume:Sum")
+         List<Tuple<string, MultiRowOp>> rv = new List<Tuple<string, MultiRowOp>>();
+         string[] calcs = text.Split(',');
+         foreach (string c in calcs) {
+            string[] toks = c.Split(':');
+            string inp_col = toks[0].Trim();
+            string op_txt = toks[1].Trim();
+            MultiRowOp op = Enum.Parse<MultiRowOp>(op_txt, true);
+            rv.Add(Tuple.Create(inp_col, op));
+         }
+         return new MultiRowOpHelper(rv);
+      }
+
+      public MultiRowOpHelper(List<Tuple<string, MultiRowOp>> operations_) {
+         operations = operations_;
+      }
+
+      // aggregates multiple rows into one - ie does group_by compute
+      public static IBlueRow? group_by_compute(List<IBlueRow> rows, MultiRowOpHelper parameters) {
+         if (rows.Count == 0) {
+            return null;
+         }
+
+         IBlueRow ir = rows.ElementAt(0);
+         IBlueTableSchema in_schema = ir.schema;
+         IBlueTableSchema out_schema = in_schema;
+         IDictionary<string, Tuple<string, MultiRowOp>> out_col_map =
+            new Dictionary<string, Tuple<string, MultiRowOp>>();
+         foreach (var t in parameters.operations) {
+            string out_col_name = $"{t.Item1}_{t.Item2}".ToLower();
+            out_schema = out_schema.add_column(TypeCode.Double, out_col_name);
+            out_col_map[out_col_name] = t;
+         }
+         MutableBlueRow or = new MutableBlueRow(out_schema, ir);
+         foreach (var kv in out_col_map) {
+            string out_col_name = kv.Key;
+            string in_col_name = kv.Value.Item1;
+            MultiRowOp op = kv.Value.Item2;
+            IEnumerable<double> col_vals = BlueDataUtility.get_colvalues<double>(rows, in_col_name);
+            double comp_res = compute_op(col_vals, op);
+            or.setValue(out_col_name, comp_res);
+         }
+         return or;
+      }
+
+      // aggregates multiple rows into one, used by MultiRowRollingMathStream
+      public static IBlueRow? group_by_compute(List<IBlueRow> rows, int start_idx, int n_rows, MultiRowOpHelper parameters) {
+         if (rows.Count == 0) {
+            return null;
+         }
+         IBlueRow ir = rows.ElementAt(start_idx);
+         IBlueTableSchema in_schema = ir.schema;
+         IBlueTableSchema out_schema = in_schema;
+         // out_col vs inp_cal + type
+         IDictionary<string, Tuple<string, MultiRowOp>> out_col_map =
+            new Dictionary<string, Tuple<string, MultiRowOp>>();
+         foreach (var t in parameters.operations) {
+            string out_col_name = $"{t.Item1}_{t.Item2}".ToLower();
+            out_schema = out_schema.add_column(TypeCode.Double, out_col_name);
+            out_col_map[out_col_name] = t;
+         }
+         MutableBlueRow or = new MutableBlueRow(out_schema, ir);
+         foreach (var kv in out_col_map) {
+            string out_col_name = kv.Key;
+            string in_col_name = kv.Value.Item1;
+            MultiRowOp op = kv.Value.Item2;
+            IEnumerable<double> col_vals = BlueDataUtility.get_colvalues<double>(rows, start_idx, n_rows, in_col_name);
+            double comp_res = compute_op(col_vals, op);
+            or.setValue(out_col_name, comp_res);
+            or.setValue("id", ir["id"]);
+         }
+         return or;
+      }
+
+      // rolling_rows are the rolling window of rows. the 0th row is the one thats gettin
+      // calculated. rows 1 - n-1 are its window rows. the schema is based on the operations.
+
+      public IBlueRow? rolling_calc(List<IBlueRow> rolling_rows) {
+         if (rolling_rows.Count == 0) {
+            return null;
+         }
+         IBlueRow ir = rolling_rows.ElementAt(0);
+         IBlueTableSchema in_schema = ir.schema;
+         IBlueTableSchema out_schema = in_schema;
+         IDictionary<string, Tuple<string, MultiRowOp>> out_col_map =
+            new Dictionary<string, Tuple<string, MultiRowOp>>();
+         foreach (var t in operations) {
+            string out_col_name = $"{t.Item1}_{t.Item2}".ToLower();
+            out_schema = out_schema.add_column(TypeCode.Double, out_col_name);
+            out_col_map[out_col_name] = t;
+         }
+         MutableBlueRow or = new MutableBlueRow(out_schema, ir);
+         foreach (var kv in out_col_map) {
+            string out_col_name = kv.Key;
+            string in_col_name = kv.Value.Item1;
+            MultiRowOp op = kv.Value.Item2;
+            IEnumerable<double> col_vals = BlueDataUtility.get_colvalues<double>(rolling_rows, in_col_name);
+            double comp_res = compute_op(col_vals, op);
+            or.setValue(out_col_name, comp_res);
+         }
+         return or;
+      }
+
+      public static double compute_op(IEnumerable<double> col_vals, MultiRowOp op) {
+         switch (op) {
+            case MultiRowOp.Max:
+               return col_vals.Max<double>();
+            case MultiRowOp.Min:
+               return col_vals.Min<double>();
+            case MultiRowOp.Mean:
+               return MathNet.Numerics.Statistics.Statistics.Mean(col_vals);
+            case MultiRowOp.Sum:
+               return col_vals.Sum();
+            case MultiRowOp.Median:
+               return MathNet.Numerics.Statistics.Statistics.Median(col_vals);
+            //case MultiRowOp.Mode:
+            //   return MathNet.Numerics.Statistics.Statistics.(col_vals);
+            case MultiRowOp.First:
+               return col_vals.First();
+            case MultiRowOp.Last:
+               return col_vals.Last();
+            case MultiRowOp.StdDev:
+               return MathNet.Numerics.Statistics.Statistics.StandardDeviation(col_vals);
+            case MultiRowOp.EdgeDiff:
+               return col_vals.First() - col_vals.Last();
+            case MultiRowOp.EdgeDiffPercentage: {
+                  double first = col_vals.First();
+                  double last = col_vals.Last();
+                  return ((first - last) / last) * 100.0;
+               }
+            default:
+               // TODO
+               Log.assert(false);
+               return Double.NaN;
+         }
+      }
+
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/MultiRowRollingMathStream.cs

@@ -0,0 +1,40 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   using System;
+
+   [DataStreamUserRespresentation("MultiRowRollingMathStream")]
+   public class MultiRowRollingMathStream : ViewStream {
+      private ViewStream _sorted_parent_str;
+      private MultiRowOpHelper _op;
+      private int _rolling_window_sz;
+      public MultiRowRollingMathStream(ViewStream parent_str, string op_txt, string sort_exp, int rolling_window_sz) {
+         _sorted_parent_str = new SortStream(parent_str, sort_exp);
+         _op = MultiRowOpHelper.parse_ops(op_txt);
+         _rolling_window_sz = rolling_window_sz;
+      }
+
+      protected override void myOnFirstSubscriber() {
+         _sorted_parent_str.onChange += _parent_str_onchange;
+      }      
+
+      protected override void myOnLastSubscriber() {
+         _sorted_parent_str.onChange -= _parent_str_onchange;
+      }
+
+      private void _parent_str_onchange(object dp_obj) {
+         var dp = (IDataPacket)dp_obj;
+         var rows = dp.newRows.to_list();
+         BlueTable? out_table = null;
+         for (int i = 0; i < rows.Count; i++) {
+            var out_r = MultiRowOpHelper.group_by_compute(rows, i, _rolling_window_sz, _op)
+               ?? throw new InvalidOperationException("group_by_compute returned null row");
+            if (out_table == null)
+               out_table = new BlueTable(out_r.schema);
+            out_table.addRow(out_r);
+         }            
+         var dp_out = BlueDataUtility.build_dp_inc(out_table, myLastValue as DataPacket, true);
+         myFireEvent(dp_out);
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/ProjectStream.cs

@@ -0,0 +1,190 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   using Spark.Core.Diagnostics;
+
+   using System;
+   using System.Collections;
+   using System.Collections.Generic;
+   using System.Linq;
+
+   #region mappings
+   internal class ProjectData {
+      // schema from the base stream
+      public readonly IBlueTableSchema in_schema;
+      // this is the projected schema
+      public readonly IBlueTableSchema out_schema;
+      // projected cols to the input cols, for cols who's names are changed
+      public readonly IDictionary<string, string> mapped_to_orig_col_map = new Dictionary<string, string>();
+      public ProjectData(IBlueTableSchema in_schema_, IBlueTableSchema out_schema_,
+                  IDictionary<string, string> mapped_to_orig_col_map_) {
+         in_schema = in_schema_;
+         out_schema = out_schema_;
+         mapped_to_orig_col_map = mapped_to_orig_col_map_;
+      }
+   }
+   #endregion
+
+
+#region Row with mappings build in
+   internal class NewProjectRow : IBlueRow {
+      #region IBlueRow members
+      private ProjectData _project_data;
+      private IBlueRow _row;
+      public NewProjectRow(ProjectData project_data, IBlueRow row) {
+         _project_data = project_data;
+         _row = row;
+      }
+      public IBlueTableSchema schema { get { return _project_data.out_schema; } }
+      #endregion
+
+      #region ICollection members
+      public int Count { get { return schema.columnNames.Length; } }
+
+      public bool IsSynchronized { get { return false; } }
+
+      public object SyncRoot { get { return this; } }
+
+      public void CopyTo(Array array, int index) {
+         int i = index;
+         foreach (object o in this as IEnumerable)
+            array.SetValue(o, i++);
+      }
+      #endregion
+
+      #region IDictionary members
+      public bool IsFixedSize { get { return true; } }
+
+      public bool IsReadOnly { get { return true; } }
+
+      public object? this[object key] {
+         get {
+            if (key is string)
+               return this[(string)key];
+            return this[(int)key];
+         }
+         set { throw new NotSupportedException("The IBlueRow is readonly"); }
+      }
+
+      public object? this[int index] {
+         get {
+            return this[schema.columnInfo[index].colName];
+         }
+      }
+
+      public object? this[string col_name] {
+         get {
+            if (_project_data.mapped_to_orig_col_map.TryGetValue(col_name, out var mapped_to_col)) {
+               return _row[mapped_to_col];
+            }
+            return _row[col_name];
+         }
+      }
+
+      public ICollection Keys { get { return schema.columnNames; } }
+
+      public ICollection Values {
+         get {
+            object[] retVal = new object[schema.columnNames.Length];
+            CopyTo(retVal, 0);
+            return retVal;
+         }
+      }
+
+      public void Add(object key, object? value) =>
+         throw new NotSupportedException();
+
+      public void Clear() { throw new NotSupportedException("The IBlueRow is readonly"); }
+
+      public bool Contains(object key) { return schema[(string)key] != null; }
+
+      /// <summary>
+      /// Note, the default enumerator is the IDictionary's enumerator, so if user needs to
+      /// iterate through the values, typecast this into an IEnumerable
+      /// </summary>
+      /// <returns></returns>
+      public IDictionaryEnumerator GetEnumerator() { return new BlueRowDictionaryEnumerator(this); }
+
+      IEnumerator IEnumerable.GetEnumerator() { return new BlueRowEnumerator(this); }
+
+      public void Remove(object key) { throw new NotSupportedException("The IBlueRow is readonly"); }
+      #endregion
+   }
+   #endregion
+
+   [DataStreamUserRespresentation("ProjectStream")]
+   public class NewProjectStream : ViewStream, IStreamMapper {
+
+      private ViewStream _stream;
+      private string _project_expression;
+      ProjectData? _project_data;
+      //public ProjectData 
+      public NewProjectStream(ViewStream vs, string project_expression) {
+         _stream = vs;
+         _project_expression = project_expression;
+         _stream = new MapStream(vs, this);
+         mySetRealSource(_stream);
+      }
+
+      public IBlueTableSchema getOutputSchema(IBlueTableSchema input_schema) {
+         _project_data = _create_project_data(input_schema, _project_expression);
+         return _project_data.out_schema;
+      }
+
+      public IBlueRow map(IBlueRow row) =>
+         new NewProjectRow(ExceptionAssert.MemberNotNull(_project_data), row);
+
+      // this is where most of the logic is, in terms of translating cols
+      private static ProjectData _create_project_data(IBlueTableSchema input_schema,
+                                                      string project_expression) {
+         project_expression = project_expression.Trim();
+         string[] project_toks = project_expression.Split(' ', ',');
+         HashSet<string> removed_cols = new HashSet<string>();
+         Dictionary<string, string> orig_to_mapped = new Dictionary<string, string>();      
+         // by default every col will show up, so if we have the projection as (a:a1)
+         // it will convert a to a1, 
+         // modifications (6/30/2025):
+         // only the columns represented here, either mapped
+         // or not, will show
+         // examples: if a schema has cols a b c
+         // project(parent_str, "a:aa b") -> aa b
+         foreach (string o_p_tok in project_toks) {
+            string p_tok = o_p_tok.Trim();
+            if (p_tok.Contains(":")) {
+               // explicit mapping
+               string[] map_toks = p_tok.Split(":");
+               string orig_col = map_toks[0];
+               string mapped_col = map_toks[1];
+               orig_to_mapped.Add(orig_col, mapped_col);  
+            } else {
+               // this is a col_name explicitely stated
+               if (input_schema.columnNames.Contains(p_tok)) {
+                  string orig_col = p_tok;
+                  string mapped_col = orig_col;
+                  orig_to_mapped.Add(orig_col, mapped_col);
+               }
+            }
+         }
+
+         // make the new schema
+         List<ColumnInfo> new_cols = new List<ColumnInfo>();
+         foreach (ColumnInfo ci in input_schema.columnInfo) {
+            if (ci.colName == "id") {
+               ColumnInfo nc = new ColumnInfo(ci.colName, new_cols.Count, ci.colType);
+               new_cols.Add(nc);
+               continue;           
+            } else if (orig_to_mapped.ContainsKey(ci.colName)) {
+               string mapped_name = orig_to_mapped[ci.colName];
+               ColumnInfo nc = new ColumnInfo(mapped_name, new_cols.Count, ci.colType);
+               new_cols.Add(nc);
+            }
+         }
+         IBlueTableSchema new_schema = new BlueTableSchema(input_schema.tableName, new_cols.ToArray());
+         var mapped_to_orig_map = orig_to_mapped.ToDictionary(kv => kv.Value, kv => kv.Key);
+         return new ProjectData(input_schema, new_schema, mapped_to_orig_map);
+      }
+
+   
+
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/PythonDataframeStream.cs

@@ -0,0 +1,128 @@
+namespace bts.BlueOrb {
+   using BCG;
+   using System.IO;
+   using System.Diagnostics;
+   using System;
+
+   [DataStreamUserRespresentation("PythonDataframeStream")]
+   public class PythonDataframeStream : ViewStream {
+      private ViewStream _parent_str;
+      private readonly string _in_csv_file_name;
+      private readonly string _out_csv_filename;
+      private readonly string _transform_function;
+      public PythonDataframeStream(ViewStream parent_str, string transform_function) {
+         var guid = System.Guid.NewGuid();
+         _in_csv_file_name = $"pdfs_in_{guid}.csv";
+         _out_csv_filename = $"pdfs_out_{guid}.csv";
+         _parent_str = new CSVSaverStream(parent_str, _in_csv_file_name);
+         _transform_function = transform_function;
+      }
+
+      protected override void myOnFirstSubscriber() {
+         _parent_str.onChange += _parent_str_onchange;
+      }
+
+      protected override void myOnLastSubscriber() {
+         _parent_str.onChange -= _parent_str_onchange;
+      }
+
+      private void _parent_str_onchange(object dp_obj) {
+         Log.assert(dp_obj != null);
+         // the file _in_csv_file_name is now populated.
+         // call py_func_wrapper_main and pass this file name as well
+         // as the output file name
+         // py_func_wrapper_main reads _in_csv_file_name into the df and calls 
+         // transform function, which returns the tranformed df. py_func_wrapper_main then
+         // writes it into the _out_csv_filename file.
+         // now this function should read _out_csv_filename into a dp
+         // and fire it
+         _compute_and_write();
+         //ViewStream rs = new SchemaGuesserStream(new CSVReaderStream(_out_csv_filename));
+         ViewStream rs = new CSVReaderStream(_out_csv_filename);
+         IBlueRowCollection nrows = null;
+         rs.onChange += (dp_obj) => {
+            nrows = (dp_obj as DataPacket).newRows;
+         };
+         var dp = BlueDataUtility.build_dp(nrows, myLastValue as DataPacket);
+         myFireEvent(dp);
+      }
+
+      private void _compute_and_write() {
+         File.WriteAllText("user_code.py", _transform_function);
+         // wrapper function
+         string py_func_wrapper_main = @"
+import sys
+from user_code import transform
+import pandas as pd
+
+if __name__ == '__main__':
+   input_file_name = sys.argv[1]
+   output_file_name = sys.argv[2]
+# 1. load input_file_name into df
+# 2. do some test calc
+# 3. write the output of 2 into output_file_name
+   df = pd.read_csv(input_file_name)   
+   df_out = transform(df)
+   df_out.to_csv(output_file_name, index=False)";
+
+
+         File.WriteAllText("runner.py", py_func_wrapper_main);
+
+         ProcessStartInfo psi = new ProcessStartInfo {
+            FileName = "python",
+            Arguments = $"runner.py {_in_csv_file_name} {_out_csv_filename}",
+            RedirectStandardOutput = false,
+            UseShellExecute = false
+         };
+         var proc = Process.Start(psi);
+         proc.WaitForExit();
+
+      }
+
+      #region Unused test code
+      private void _simple_test() {
+
+         // actual function that needs to be called ////////////////////////
+         string py_real_function = @"
+def test(x, out_path):
+   rv = x * 10
+   with open(out_path, 'w') as f:
+      f.write(str(rv))
+   return rv";
+         // the function is in a string object.
+         File.WriteAllText("user_code.py", py_real_function);
+
+
+         // runner app (top level main function) //////////////////////////////
+         string py_func_wrapper_main = @"
+import sys
+from user_code import test
+
+if __name__ == '__main__':
+   arg = int(sys.argv[1])
+   out_path = sys.argv[2]
+   rv = test(arg, out_path)
+   rv = rv + 12
+   with open(out_path, 'w') as f:to \
+      f.write(str(rv))";
+   
+         File.WriteAllText("runner.py", py_func_wrapper_main);
+
+         string outputPath = "py_out.txt";
+         ProcessStartInfo psi = new ProcessStartInfo {
+            FileName = "python",
+            Arguments = $"runner.py 4 {outputPath}",
+            RedirectStandardOutput = false,
+            UseShellExecute = false
+         };
+         var proc = Process.Start(psi);
+         proc.WaitForExit();
+
+         // Now read the output written by the function
+         string result = File.ReadAllText(outputPath);
+         Console.WriteLine(result); // Should print "6"
+
+      }
+      #endregion
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/SchemaGuesserStream.cs

@@ -0,0 +1,30 @@
+using BCG;
+
+namespace bts.BlueOrb {
+   public class SchemaGuesserStream : ViewStream {
+
+      private IBlueRowCollection _rows = null;
+      private ViewStream _vs;
+      public SchemaGuesserStream(ViewStream vs) {
+         _vs = vs;
+      }
+
+      protected override void myOnFirstSubscriber() {
+         _vs.onChange += _on_data;
+      }
+      protected override void myOnLastSubscriber() {
+         _vs.onChange -= _on_data;
+      }
+
+      private void _on_data(object obj) {
+         DataPacket dp = obj as DataPacket;
+         if (_rows == null) {
+            _rows = BlueDataUtility.get_typed_table(dp.newRows);
+         }
+         var dp_out = BlueDataUtility.build_dp_inc(_rows, myLastValue as DataPacket);
+         myFireEvent(dp_out);
+
+      }
+
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/SingleRowMathStream.cs

@@ -0,0 +1,67 @@
+using Bts.ArithmeticExpressions;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using BCG;
+
+namespace bts.BlueOrb {
+
+   [DataStreamUserRespresentation("SingleRowMathStream")]
+   public class MathStream : ViewStream, IStreamMapper {
+      private IArithmeticProgram myExp;
+      private BooleanExpressionFilter _bool;
+      List<string> myExtraColumns = new List<string>();
+      BlueTableSchema mySchema;
+
+
+      public MathStream(ViewStream vs, string mathExpression)
+         : this(vs, mathExpression, string.Empty) {
+      }
+
+      public MathStream(ViewStream vs, string mathExpression, string boolean_expression) {
+         myExp = ArithmeticProgramParser.Parse(mathExpression) ??
+            throw new Exception($"Failed to parse ArithmeticExpression '{mathExpression}'");
+         myExtraColumns = myExp.OutputIdentifiers.ToList();
+         if (!string.IsNullOrEmpty(boolean_expression))
+            _bool = new BooleanExpressionFilter(boolean_expression);
+         mySetRealSource(new MapStream(vs, this));
+      }
+
+      #region IStreamMapper Members
+
+      public IBlueTableSchema getOutputSchema(IBlueTableSchema inputSchema) {
+         if (mySchema == null) {
+            Dictionary<string, ColumnInfo> colIdx = new Dictionary<string, ColumnInfo>();
+            foreach (ColumnInfo ci in inputSchema.columnInfo)
+               colIdx[ci.colName] = ci;
+
+            foreach (string ncn in myExtraColumns) {
+               ColumnInfo newC;
+               if (colIdx.ContainsKey(ncn))
+                  newC = new ColumnInfo(colIdx[ncn].colName, colIdx[ncn].colNo, typeof(double));
+               else
+                  newC = new ColumnInfo(ncn, colIdx.Count, typeof(double));
+               colIdx[ncn] = newC;
+            }
+            mySchema = new BlueTableSchema(colIdx.Values.ToArray(), "math(" + inputSchema.tableName + ")");
+         }
+         return mySchema;
+      }
+
+      #endregion
+
+      #region IDynamicStreamMapper Members
+
+      public IBlueRow map(IBlueRow row) {
+         MutableBlueRow result = new MutableBlueRow(mySchema, row);
+         if (_bool == null || _bool.filter(row)) {
+            myExp.Evaluate(result.AsDictionary());
+         }
+         return result;
+      }
+
+      #endregion
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/SortStream.cs

@@ -0,0 +1,17 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   using System;
+   using System.Collections.Generic;
+   using System.Linq;
+   using System.Text;
+   using System.Threading.Tasks;
+
+   [DataStreamUserRespresentation("SortStream")]
+   public class SortStream: ViewStream {
+      public SortStream (ViewStream parent_stream, string sort_expr) {
+         ViewStream rs = new BCG.SortStream(parent_stream, sort_expr);
+         mySetRealSource(rs);
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/TimeBasedRollingFilterStream.cs

@@ -0,0 +1,16 @@
+namespace bts.BlueOrb {
+   using BCG;
+
+   using System;
+   using System.Collections.Generic;
+   using System.Linq;
+   using System.Text;
+   using System.Threading.Tasks;
+   [DataStreamUserRespresentation("TimeBasedRollingFilterStream")]
+   public class TimeBasedRollingFilterStream : ViewStream {
+      public TimeBasedRollingFilterStream(ViewStream parent_str, string time_col, double n_seconds) {
+         ViewStream rs = new BCG.TimeBasedFilterStream(ViewStreamDatabase.instance, parent_str, time_col, TimeSpan.FromSeconds(n_seconds));
+         mySetRealSource(rs);
+      }
+   }
+}

src/DataStreamSuite/DataStream/BlueOrb/TimeSeriesStream.cs

@@ -1,19 +1,25 @@
-using Google.Protobuf.WellKnownTypes;
-
 using System;
-using BCG.Utilities.General;
+using System.Data.Entity.Core.Mapping;
 
-namespace BCG {
+using BCG;
+
+namespace bts.BlueOrb {
    // Keeps adding changing rows to the stream, hence preserving the history
    // and creating a time series, for example this can be used to make bbo updates
-   // into a time series of prices/qty 
+   // into a time series of prices/qty
+   [DataStreamUserRespresentation("TimeSeriesStream")]
    public class TimeSeriesStream : ViewStream {
-      private BlueTable _table;
+      private CircularBufferTable _table;
       private ViewStream _stream;
       private int _id = 0;
+      private int _size = 0;
 
-      public TimeSeriesStream(ViewStream stream) {
+      public TimeSeriesStream(ViewStream stream)
+         : this(stream, Int32.MaxValue) { }
+
+      public TimeSeriesStream(ViewStream stream, int size) {
          _stream = stream;
+         _size = size;
       }
 
       protected override void myOnFirstSubscriber() {
@@ -30,18 +36,16 @@ namespace BCG {
          if (_table == null) {
             IBlueTableSchema schema = new BlueTableSchema(dp.newRows.schema.columnInfo, dp.newRows.schema.tableName);
             schema = schema.add_columns(Tuple.Create(typeof(DateTime), "timestamp"));
-            _table = new BlueTable(schema);
+            _table = new CircularBufferTable(schema, _size);
          }
-         BlueTable added_rows = new BlueTable(_table.schema);
          foreach (IBlueRow r in dp.addedRows) {
             MutableBlueRow ar = new MutableBlueRow(_table.schema, r);
             ar.setValue("timestamp", now);
             ar.setValue("id", _id++);
-            added_rows.addRow(ar);
+            _table.add_row(ar);
          }
-         _table.addRows(added_rows);
-         myFireEvent(new DataPacket(_table, added_rows, new BlueTable(_table.schema)));
-
+         var dp_out =  BlueDataUtility.build_dp(_table, myLastValue as DataPacket);
+         myFireEvent(dp_out);
       }
    }
 

src/DataStreamSuite/DataStream/BlueOrb/TopStream.cs

@@ -0,0 +1,11 @@
+namespace bts.BlueOrb {
+   using BCG;
+   [DataStreamUserRespresentation("TopStream")]
+   public class TopStream : ViewStream { 
+      public TopStream(ViewStream vs, int n_rows, string sort_col) {
+         ViewStream rs = new BCG.TopStream (vs, n_rows, sort_col);
+         mySetRealSource(rs);
+      }
+   }
+
+}

src/DataStreamSuite/DataStream/BlueOrb/UnionStream.cs

@@ -0,0 +1,17 @@
+namespace bts.BlueOrb {
+   using System;
+   using System.Collections.Generic;
+
+   using mbts;
+   using BCG;
+
+   // [DataStreamUserRespresentation("UnionStream")]
+   [DataStreamUserRespresentation("AppendStream")]
+   public class UnionStream : ViewStream {
+      public UnionStream(ViewStream left_stream, ViewStream right_stream) {
+         ViewStream rs = new BCG.MutableAppendStream(left_stream, right_stream);
+         mySetRealSource(rs);
+      }
+   }
+
+}

src/DataStreamSuite/DataStream/DataStream.csproj

@@ -1,25 +1,42 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\ArithmeticExpressions\ArithmeticExpressions.csproj" />
-    <ProjectReference Include="..\BaseUtilities\BaseUtilities.csproj" />    
-    <ProjectReference Include="..\BooleanExpressions\BooleanExpressions.csproj" />
-    <ProjectReference Include="..\Bts.ColumnExpressions\Bts.ColumnExpressions.csproj" />
-    <ProjectReference Include="..\Bts.ColumnSortExpressions\Bts.ColumnSortExpressions.csproj" />
-    <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
-    <ProjectReference Include="..\DataStreamExpressions\DataStreamExpressions.csproj" />
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="HtmlAgilityPack" Version="1.11.57" />
+    <PackageReference Include="IronPython" Version="3.4.2" />
+    <PackageReference Include="Microsoft.Data.Analysis" Version="0.21.1" />
     <PackageReference Include="MongoDB.Bson" Version="2.23.1" />
     <PackageReference Include="MongoDB.Driver" Version="2.23.1" />
+    <PackageReference Include="Parquet.Net" Version="5.0.1" />
+    <PackageReference Include="System.Data.SQLite" Version="1.0.118" />
+    <PackageReference Include="MathNet.Numerics" Version="5.0.0" />
   </ItemGroup>
 
+  <Choose>
+    <When Condition="'$(UseProjectRefs)' == 'true'">
+      <ItemGroup>
+        <ProjectReference Include="..\ArithmeticExpressions\ArithmeticExpressions.csproj" />
+        <ProjectReference Include="..\BaseUtilities\BaseUtilities.csproj" />    
+        <ProjectReference Include="..\BooleanExpressions\BooleanExpressions.csproj" />
+        <ProjectReference Include="..\Bts.ColumnExpressions\Bts.ColumnExpressions.csproj" />
+        <ProjectReference Include="..\Bts.ColumnSortExpressions\Bts.ColumnSortExpressions.csproj" />
+        <ProjectReference Include="..\DataStreamExpressions\DataStreamExpressions.csproj" />
+      </ItemGroup>
+    </When>
+    <Otherwise>
+      <ItemGroup>
+        <PackageReference Include="ArithmeticExpressions" Version="$(SparkVersion)" />
+        <PackageReference Include="BaseUtilities" Version="$(SparkVersion)" />
+        <PackageReference Include="BooleanExpressions" Version="$(SparkVersion)" />
+        <PackageReference Include="Bts.ColumnExpressions" Version="$(SparkVersion)" />
+        <PackageReference Include="Bts.ColumnSortExpressions" Version="$(SparkVersion)" />
+        <PackageReference Include="DataStreamExpressions" Version="$(SparkVersion)" />
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
+
 </Project>

src/DataStreamSuite/DataStream/DataStreamExtensions.cs

@@ -0,0 +1,218 @@
+namespace Bts.DataStream;
+
+using BCG;
+
+using bts.api.core;
+
+using Bts.DataStreamCore;
+using Bts.PubSub;
+
+using Microsoft.Extensions.Logging;
+
+using Spark.Core.Disposables;
+using Spark.Core.Threading;
+
+using System;
+using System.Linq;
+using System.Reactive.Linq;
+
+public static class DataStreamExtensions {
+   public static ViewStream AsViewStream(this IObservable<IDataPacket> source) =>
+      source as ViewStream ?? new ObservableViewStream(source);
+
+   public static ViewStream AsViewStream<T>(this IObservable<IDataPacket<T>> source, string? name = null, ILogger? logger = null) where T : IBlueRow =>
+      source as ViewStream ?? new ObservableViewStream(source.Select(dp => new DataPacket(dp.newRows, dp.addedRows, dp.deletedRows)), name, logger);
+
+   public static IObservable<IDataPacket> AsObservable(this ViewStream source) {
+      return source as IObservable<IDataPacket> ?? Observable.Create<IDataPacket>(Subscribe);
+
+      IDisposable Subscribe(IObserver<IDataPacket> observer) {
+         source.onChange += OnChange;
+         return Disposable.Create(() => source.onChange -= OnChange);
+
+         void OnChange(object? newValue) =>
+            observer.OnNext(newValue as IDataPacket ?? throw new ArgumentException(
+               $"Expected IDataPacket, got {newValue?.GetType()}", nameof(newValue)));
+      }
+   }
+
+   // public static IObservable<IDataPacket<T>> SelectDataPacket<T>(this IObservable<IDataPacket> source, Func<IBlueRow, T> selector) where T : IBlueRow =>
+   //    source.Select(dp => {
+   //       dp.get_new_added_deleted(out var newRows, out var addedRows, out var deletedRows);
+   //       return new DataPacket<T>(CastRows(newRows), CastRows(addedRows), CastRows(deletedRows));
+
+   //       IBlueRowCollection<T> CastRows(ICollection rows) =>
+   //          new BlueTableSelectorWrapper<T>(
+   //             rows as IBlueRowCollection ?? new BlueRowCollection(rows, dp.Schema), selector);
+   //    });
+
+   public static IObservable<TableUpdate<IBlueRow, int>> AsTables(this IObservable<IDataPacket> source) =>
+      source.AsTables<IBlueRow, int>(r => r, r => r.Id());
+
+   public static IObservable<TableUpdate<T, int>> AsTables<T>(this IObservable<IDataPacket> source, Func<IBlueRow, T> valueSelector) where T : IBlueRow =>
+      source.AsTables<T, int>(valueSelector, r => r.Id());
+
+   public static IObservable<TableUpdate<T, int>> AsTables<T>(
+      this IObservable<IDataPacket> source, Func<IBlueRow, T> valueSelector, Func<T, int> keySelector) =>
+      source.AsTables<T, int>(valueSelector, keySelector);
+
+   public static IObservable<TableUpdate<T, TKey>> AsTables<T, TKey>(
+      this IObservable<IDataPacket> source, Func<IBlueRow, T> valueSelector, Func<T, TKey> keySelector, Func<IBlueRow, TKey>? rowKeySelector = null) where TKey : IEquatable<TKey> {
+      rowKeySelector ??= r => keySelector(valueSelector(r));
+      return source.Scan(TableUpdate<T, TKey>.Empty(keySelector), (res, dp) => {
+         var bd = res.ToBuilder();
+         dp.get_new_added_deleted(out var newRows, out var addedRows, out var deletedRows);
+         foreach (IBlueRow r in addedRows) {
+            bd.AddOrUpdate(valueSelector(r));
+         }
+         foreach (IBlueRow r in deletedRows) {
+            bd.Remove(rowKeySelector(r));
+         }
+         return bd.ToImmutable();
+      });
+   }
+
+   public static IObservable<IDataPacket> AsDataPackets(this IObservable<TableUpdate<IBlueRow, int>> source) =>
+      source.Scan(
+         (Table: (BlueTableImmutable?)null, Dp: (IDataPacket?)null),
+         (res, table) => {
+            var resTable = res.Table;
+            if (resTable is null) {
+               if (table.Index.Count == 0) {
+                  return (null, null);
+               }
+               resTable = new(table.Index.Values.First().schema);
+            }
+            var bd = resTable.ToDataPacketBuilder();
+            foreach (var r in table.RemovedItems) {
+               bd.Remove(r.Id());
+            }
+            foreach (var r in table.AddedItems) {
+               bd.AddOrUpdate(r);
+            }
+            var resDp = bd.ToDataPacket(out var newRows);
+            return (newRows, resDp);
+         })
+         .Where(t => t.Dp is not null && (t.Dp.addedRows.Count > 0 || t.Dp.deletedRows.Count > 0))
+         .Select(t => t.Dp!);
+
+   public static IObservable<IDataPacket> AsDataPackets<T>(this IObservable<TableUpdate<T, int>> source, IBlueTableSchema schema) where T : IBlueRow =>
+      source.Scan(
+         (Table: new BlueTableImmutable(schema), Dp: (IDataPacket)new DataPacket(schema)),
+         (res, table) => {
+            var bd = res.Table.ToDataPacketBuilder();
+            foreach (var r in table.RemovedItems) {
+               bd.Remove(r.Id());
+            }
+            foreach (var r in table.AddedItems) {
+               bd.AddOrUpdate(r);
+            }
+            var resDp = bd.ToDataPacket(out var newRows);
+            return (newRows, resDp);
+         })
+         .Where(t => t.Dp.addedRows.Count > 0 || t.Dp.deletedRows.Count > 0)
+         .Select(t => t.Dp);
+
+   public static IObservable<IDataPacket> AsDataPackets<T, TKey>(this IObservable<TableUpdate<T, TKey>> source, BlueTableSchemaAdapter<T> schema) where TKey : IEquatable<TKey> {
+      return Observable.Create<IDataPacket>(Subscribe);
+
+      IDisposable Subscribe(IObserver<IDataPacket> o) {
+         var adapter = new BlueTableImmutableAdapter<T>(schema);
+         IDataPacket initDataPacket = new DataPacket(schema);
+         return source.Scan((Adapter: adapter, DataPacket: initDataPacket), OnUpdate).Select(res => res.DataPacket).Subscribe(o);
+
+         (BlueTableImmutableAdapter<T> Adapter, IDataPacket DataPacket) OnUpdate(
+            (BlueTableImmutableAdapter<T> Adapter, IDataPacket DataPacket) state, TableUpdate<T, TKey> tableUpdate) {
+            var bd = state.Adapter.ToDataPacketBuilder();
+            bd.Update(tableUpdate);
+            var newRows = bd.ToImmutable(out var dp);
+            return (newRows, dp);
+         }
+      }
+   }
+
+   public static ViewStream AsViewStream<T>(this IObservable<TableUpdate<T, int>> source, IBlueTableSchema schema) where T : IBlueRow =>
+      source.AsDataPackets(schema).AsViewStream();
+
+   public static int ResolveIndices(this IBlueTableSchema schema, string name) {
+      var indices = ResolveIndices(schema, new[] { name });
+      return indices[0];
+   }
+
+   public static (int, int) ResolveIndices(this IBlueTableSchema schema, string name1, string name2) {
+      var indices = ResolveIndices(schema, new[] { name1, name2 });
+      return (indices[0], indices[1]);
+   }
+
+   public static (int, int, int) ResolveIndices(this IBlueTableSchema schema, string name1, string name2, string name3) {
+      var indices = ResolveIndices(schema, new[] { name1, name2, name3 });
+      return (indices[0], indices[1], indices[2]);
+   }
+
+   public static (int, int, int, int) ResolveIndices(this IBlueTableSchema schema, string name1, string name2, string name3, string name4) {
+      var indices = ResolveIndices(schema, new[] { name1, name2, name3, name4 });
+      return (indices[0], indices[1], indices[2], indices[3]);
+   }
+
+   public static int[] ResolveIndices(this IBlueTableSchema schema, string[] columnNames) {
+      var columns = schema.columnInfo;
+      var indices = new int[columnNames.Length];
+      int nResolved = 0;
+      for (int i = 0; i < columnNames.Length; i++) {
+         int origNResolved = nResolved;
+         for (int j = 0; j < columns.Length; j++) {
+            if (columns[j].colName == columnNames[i]) {
+               indices[i] = j;
+               nResolved++;
+               break;
+            }
+         }
+         if (nResolved == origNResolved) {
+            throw new ArgumentException($"No column named '{columnNames[i]}'", nameof(schema));
+         }
+      }
+      return indices;
+   }
+
+   public static IObservable<IDataPacket> OnWorkScheduler(this IObservable<IDataPacket> source, IWorkScheduler scheduler) =>
+      Observable.Create<IDataPacket>(o => {
+         var inputGate = new AtomicGate();
+         var outputGate = new AtomicGate();
+         BlueTableImmutable? lastTable = null;
+         BlueTableImmutable.DataPacketBuilder? bd = null;
+         IDataPacket? pendingDpOut = null;
+         return Disposable.Create(source.Subscribe(OnNext), scheduler.Subscribe(DoWork));
+
+         void OnNext(IDataPacket value) {
+            using (inputGate.BeginTransaction()) {
+               lastTable ??= new(value.newRows.schema);
+               bd ??= lastTable.ToDataPacketBuilder();
+               if (pendingDpOut is null) {
+                  // The last outgoing datapacket was just fired. Don't merge this update with the
+                  // previous one (otherwise its adds/removes would be fired twice).
+                  bd.Reset();
+               }
+               foreach (IBlueRow r in value.deletedRows) {
+                  bd.Remove(r.Id());
+               }
+               foreach (IBlueRow r in value.addedRows) {
+                  bd.AddOrUpdate(r);
+               }
+               pendingDpOut = bd.ToDataPacket(out lastTable);
+            }
+         }
+
+         void DoWork() {
+            IDataPacket? dpOut = null;
+            if (outputGate.TryEnter()) {
+               using var exit = Disposable.Create(outputGate.Exit);
+               (dpOut, pendingDpOut) = (pendingDpOut, dpOut);
+               if (dpOut is not null) {
+                  o.OnNext(dpOut);
+               }
+            }
+         }
+      });
+
+
+}

src/DataStreamSuite/DataStream/Misc/DSLStream.cs

@@ -0,0 +1,35 @@
+namespace bts.BlueOrb {
+   using System;
+   using BCG;
+   using System.Collections.Generic;
+   using Bts.DataStreamExpressions;
+   using System.Xml;
+
+   // All this does is take in a dsl expression, parse it and fire the data that come out of running it.
+   // So for example, if an expresison is passed 
+   [DataStreamUserRespresentation("dsl")]
+   public class DSLStream : ViewStream {
+      private readonly string _dsl;
+      public DSLStream(string dsl) {
+         Log.Gen.info($"DSLStream.cons dsl: {dsl}");
+         // Remove all colons
+         string sanitizedDsl = dsl.Replace(":", "COLON");
+         _dsl = dsl;
+         ViewStream rs = build_stream(dsl) ?? new LiteralStream("error", $"msg:invalid dsl");
+         mySetRealSource(rs);
+      }
+
+      static ViewStream? build_stream(string stream_expression) {
+         try {
+            var exp = DataStreamExpressionsInterpreter.Evaluate(stream_expression);
+            var rv = exp.getView(new Dictionary<string, StatementExpression>(0));
+            return rv;
+
+         } catch (Exception ex) {
+            //send to blueorb
+            Log.Gen.error($"Could not build stream: {stream_expression} ex: {ex}");
+            return null;
+         }
+      }
+   }
+}

src/DataStreamSuite/DataStream/Misc/PandasScriptStream.cs

@@ -0,0 +1,29 @@
+namespace Bts.DataStream;
+
+using BCG;
+
+using bts;
+
+using System;
+using System.IO;
+
+public class PandasScriptStream : ViewStream {
+   public PandasScriptStream(ViewStream vs, string file)
+      : this(vs, file, null) { }
+
+   public PandasScriptStream(ViewStream vs, string file, string? pythonExe)
+      : this(vs, file, pythonExe, ViewStreamDatabase.instance) { }
+
+   public PandasScriptStream(ViewStream vs, string file, string? pythonExe, ViewStreamDatabase vsd) {
+      mySetRealSource(new PandasStream(vs, readFile(), pythonExe, vsd));
+
+      string readFile() {
+         try {
+            return File.ReadAllText(file);
+         } catch (Exception ex) {
+            Log.Gen.error($"PandasScriptStream error reading file: {ex}");
+            throw;
+         }
+      }
+   }
+}

src/DataStreamSuite/DataStream/Misc/PandasStream.cs

@@ -1,62 +1,129 @@
-// using System;
-// using System.Diagnostics;
-
-// using BCG;
-// using BCG.Utilities.General;
-
-
-// namespace bts {
-
-//     public class PandasStream : ViewStream, IWorker {
-//         //C:\Users\Owner\AppData\Local\Microsoft\WindowsApps\python.exe
-
-//         public PandasStream(ViewStream vs, ViewStreamDatabase vsd, string pandas_code) {
-
-//         }
-
-//         public PandasStream(ViewStream vs, string pandas_code) :
-//         this(vs, ViewStreamDatabase.instance, pandas_code) {
-//         }
-
-
-//         protected override void myOnFirstSubscriber() {
-
-//             // string python_code = @"
-//             //    import winsound
-//             //    frequency = 2500  # Set frequency (in Hz)
-//             //    duration = 1000   # Set duration (in milliseconds)
-//             //    winsound.Beep(frequency, duration)
-//             // ";
-//             string python_code = @"
-//             file_path = \"C:\\Temp\\test2.txt\\"  # r prefix for raw string to avoid escape characters
-//             with open(file_path, \"w\") as f:
-//                 f.write(\"Hello, world!\n\")
-//             ";
-
-//             execute_python_code(python_code);
-//         }
-
-//         static void execute_python_code(string python_code) {
-//             ProcessStartInfo start = new ProcessStartInfo();
-//             start.FileName = "python"; // Python executable
-//             start.Arguments = "-c \"" + python_code.Replace("\"", "\\\"") + "\""; // Pass code as argument
-//             start.UseShellExecute = false;
-//             start.RedirectStandardOutput = true;
-
-//             using (Process process = Process.Start(start)) {
-//                 using (System.IO.StreamReader reader = process.StandardOutput) {
-//                     string result = reader.ReadToEnd();
-//                     Console.Write(result);
-//                 }
-//             }
-//         }
-
-//         protected override void myOnLastSubscriber() {
-//         }
-
-//         public void doWork() {
-
-//         }
-
-//     }
-// }
+namespace Bts.DataStream;
+
+using BCG;
+using BCG.Utilities.General;
+
+using bts;
+
+using Bts.DataStreamCore;
+
+using Spark.Core.Collections;
+using Spark.Core.Disposables;
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+public class PandasStream : ViewStream, IWorker {
+   readonly string inputFile = $"PandasStream_{Guid.NewGuid()}.csv";
+   readonly string outputFile = $"PandasStream_{Guid.NewGuid()}.csv";
+   readonly string pythonExe;
+   readonly ViewStreamDatabase vsd;
+   readonly CSVSaverStream inputCsvStream;
+   readonly Lazy<string> pythonCode;
+   IDictionary<int, IBlueRow>? lastRowMap = null;
+   int inputVersion = 0;
+   int outputVersion = 0;
+   DateTime lastFireTime = DateTime.MinValue;
+   TimeSpan fireThrottle = TimeSpan.FromSeconds(3);
+   IDisposable? dispose;
+
+   public PandasStream(ViewStream vs, string dataFrameExpression)
+      : this(vs, dataFrameExpression, null, ViewStreamDatabase.instance) { }
+
+   public PandasStream(ViewStream vs, string dataFrameExpression, string? pythonExe, ViewStreamDatabase vsd) {
+      pythonExe ??= Environment.GetEnvironmentVariable("PYTHON_EXE") ?? @"C:\Users\johnc\GoogleDrive\Repos\bts\spark\.venv\Scripts\python.exe";
+      this.pythonExe = pythonExe;
+      this.vsd = vsd;
+      // This should fire an update when it writes to the output file
+      inputCsvStream = new CSVSaverStream(vs, inputFile, true, int.MaxValue, true);
+      pythonCode = new(getPythonCode);
+
+      string getPythonCode() {
+         var imports =
+@"import numpy as np
+import pandas as pd
+import sys
+";
+         var bd = new StringBuilder(imports);
+         bd.AppendLine($"df=pd.read_csv('{inputFile}')");
+         bd.AppendLine(dataFrameExpression);
+         bd.AppendLine($"df.to_csv('{outputFile}', index=False)");
+         return bd.ToString();
+      }
+   }
+
+   protected override void myOnFirstSubscriber() {
+      vsd.addWorker(this);
+      inputCsvStream.onChange += onInputChanged;
+      this.dispose = Disposable.Create(dispose);
+
+      void onInputChanged(object newValue) =>
+         inputVersion++;
+
+      void dispose() {
+         inputCsvStream.onChange -= onInputChanged;
+         vsd.removeWorker(this);
+         deleteFile(inputFile);
+         deleteFile(outputFile);
+      }
+
+      void deleteFile(string file, [CallerArgumentExpression(nameof(file))] string name = "") {
+         if (!File.Exists(file)) {
+            return;
+         }
+         try {
+            File.Delete(file);
+         } catch (Exception ex) {
+            Log.Gen.error($"PandasStream. Error deleting {name} file '{file}': {ex}");
+         }
+      }
+   }
+
+   protected override void myOnLastSubscriber() =>
+      Disposable.dispose(ref dispose);
+
+   static void executePythonCode(string pythonCode, string? pythonExe = null) {
+      pythonExe ??= "python";
+      var start = new ProcessStartInfo {
+         FileName = pythonExe,
+         Arguments = "-c \"" + pythonCode.Replace("\"", "\\\"") + "\"",
+         UseShellExecute = false,
+         RedirectStandardOutput = true
+      };
+      using var process = Process.Start(start)
+         ?? throw new InvalidOperationException("Failed to launch python");
+      process.WaitForExit();
+   }
+
+   void IWorker.doWork() {
+      if (outputVersion == inputVersion) {
+         return;
+      }
+      var now = DateTime.Now;
+      var elapsedSinceLastFire = now - lastFireTime;
+      if (elapsedSinceLastFire < fireThrottle) {
+         return;
+      }
+      outputVersion = inputVersion;
+      executePythonCode(pythonCode.Value, pythonExe);
+      var rows = BlueDataUtility.createRowsFromCSVFileWithoutTypes(outputFile, out var schema);
+      var rowMap = rows as IDictionary<int, IBlueRow> ?? rows.Cast<IBlueRow>().ToDictionary(r => r.Id());
+      var comp = BlueRowEqualityComparer.Instance;
+      var deletedRows = new BlueTable(schema);
+      var addedRows = new BlueTable(schema);
+      if (lastRowMap is not null) {
+         deletedRows.SetItems(lastRowMap.Where(oldRow =>
+            !(rowMap.TryGetValue(oldRow.Key, out var newRow) && comp.Equals(newRow, oldRow.Value))));
+         addedRows.SetItems(rowMap.Where(newRow =>
+            !(lastRowMap.TryGetValue(newRow.Key, out var oldRow) && comp.Equals(oldRow, newRow.Value))));
+      }
+      lastRowMap = rowMap;
+      lastFireTime = DateTime.Now;
+      myFireEvent(new DataPacket(rows, addedRows, deletedRows));
+   }
+}

src/DataStreamSuite/DataStream/Misc/TCPConnectionTestStream.cs

@@ -39,8 +39,8 @@ namespace BCG {
 
         protected override void myOnFirstSubscriber() {
             MasterWorker.getInstance(false).addWorker(this, _send_period);
-            var server_address = new BlutoSubAddress(_ip, _port);
-            bts.AsyncTCPConnector_APM.connect_to(server_address, this);
+            var server_rci = new RemoteConnectionInfo(_ip, _port);
+            bts.AsyncTCPConnector_APM.connect_to(server_rci, this);
         }
 
         protected override void myOnLastSubscriber() {

src/DataStreamSuite/DataStream/ObservableViewStream.cs

@@ -0,0 +1,50 @@
+namespace Bts.DataStream;
+
+using BCG;
+
+using bts;
+
+using Microsoft.Extensions.Logging;
+
+using System;
+
+public class ObservableViewStream : ViewStream, IObservable<IDataPacket>, IDisposable {
+   readonly IObservable<IDataPacket> source;
+   readonly string? name;
+   readonly ILogger? logger;
+   IDisposable? subscription;
+
+   public ObservableViewStream(IObservable<IDataPacket> source, string? name = null, ILogger? logger = null) {
+      this.source = source;
+      this.name = name;
+      this.logger = logger;
+   }
+
+   public void Dispose() {
+      GC.SuppressFinalize(this);
+      if (subscription is not null) {
+         subscription.Dispose();
+         subscription = null;
+      }
+   }
+
+   protected override void myOnFirstSubscriber() {
+      Log.isnull(subscription);
+      subscription = source.Subscribe(myFireEvent, OnError, OnCompleted);
+
+      void OnError(Exception exception) =>
+         logger?.LogError("Error in ObservableViewStream. name: {Name}, error: {Exception}", name, exception);
+
+      void OnCompleted() =>
+         logger?.LogInformation("ObservableViewStream completed. name: {Name}", name);
+   }
+
+   protected override void myOnLastSubscriber() {
+      Log.notnull(subscription);
+      subscription.Dispose();
+      subscription = null;
+   }
+
+   IDisposable IObservable<IDataPacket>.Subscribe(IObserver<IDataPacket> observer) =>
+      source.Subscribe(observer);
+}

src/DataStreamSuite/DataStream/Offloading/AddToCloudStream.cs

@@ -1,32 +0,0 @@
-using BCG;
-
-namespace BCG
-{
-   // this is a stream so we can run it from the DSQA (since dsqa can only load streams)
-   [DataStreamUserRespresentation("add_to_cloud")]
-   public class AddToCloudStream : ViewStream
-   {
-      private readonly string _name, _stream_exp;
-      private StreamOffloadRequestor _requestor = new StreamOffloadRequestor();
-      public AddToCloudStream(string name, params string[] lines)
-      : this(name, 0, lines)
-      {
-      }
-
-      public AddToCloudStream(string name, int persist, params string[] lines)
-      {
-         _name = name;
-         _stream_exp = getExpression(lines);
-         _requestor.add_to_cloud(_name, _stream_exp, persist == 1);
-         mySetRealSource(new TableStream("cloud_streams"));
-      }
-
-      static string getExpression(params string[] lines) {
-         for (int i = 0; i < lines.Length; i++) {
-            // unescape quotes
-            lines[i] = lines[i].Replace("\\\"", "\"");
-         }
-         return string.Join("\n", lines);
-      }
-   }
-}

src/DataStreamSuite/DataStream/Offloading/CloudStreamManager.cs

@@ -1,100 +0,0 @@
-using BCG;
-
-using System;
-using System.Collections.Generic;
-
-using mbts.config;
-using bts.utils;
-using System.Threading.Tasks;
-using Bts.DataStreamExpressions;
-using System.Collections.Generic;
-using BCG.Utilities.General;
-
-namespace BCG
-{
-   // listens to the requests posted on "cloud_streams" request table, and 
-   // if unfulfilled starts a ViewPubsliher
-   public class CloudStreamManager : IWorker
-   {
-      public class StreamPubUnit
-      {
-         public string name;
-         public string stream_expression;
-         public ViewStream stream;
-         public bool persist;
-         public ViewPublisher view_publisher;
-
-         public StreamPubUnit(string name_, string stream_expression_, ViewStream stream_, bool persist_, ViewPublisher view_publisher_)
-         {
-            name = name_;
-            stream_expression = stream_expression_;
-            stream = stream_;
-            persist = persist_;
-            view_publisher = view_publisher_;
-         }
-      }
-      static ViewStream build_stream(string stream_expression)
-      {
-         try
-         {
-            var exp = DataStreamExpressionsInterpreter.Evaluate(stream_expression);
-            var rv = exp.getView(new Dictionary<string, StatementExpression>(0));
-            return rv;
-
-         }
-         catch (Exception ex)
-         {
-            bts.Log.assert(false, $"Could not build stream: {stream_expression} ex: {ex}");
-            return null;
-         }
-      }
-      private IDictionary<string, StreamPubUnit>
-         _stream_pub_map = new Dictionary<string, StreamPubUnit>();
-      private ViewStream _stream = new TableStream("cloud_streams");
-      private PubTableBroker _broker = new PubTableBroker();
-
-      public CloudStreamManager()
-      {
-         _stream.onChange += _on_str;
-
-      }
-      private void _on_str(object obj)
-      {
-         DataPacket dp = obj as DataPacket;
-         foreach (IBlueRow r in dp.newRows)
-         {
-            string name = r.get<string>("name");
-            bool persist = r.get<bool>("persist");
-            string stream_exp = r.get<string>("stream_exp");
-            if (!_stream_pub_map.ContainsKey(name))
-            {
-               _assign(name, stream_exp, persist);
-            }
-         }
-      }
-
-      private void _assign(string name, string stream_expression, bool persist)
-      {
-         bts.Log.Gen.info($"CloudStreamManager.assign name: {name} stream_expression: {stream_expression}");
-         ViewStream stream = build_stream(stream_expression);
-         _expose_to_ws(name, stream);
-         if (persist)
-         {
-            stream = new PersistorStream(stream, name, "C:\\Temp\\", 1000000);   // 10MBs
-         }
-         ViewPublisher view_pub = new ViewPublisher(name, _broker, stream);
-         StreamPubUnit u = new StreamPubUnit(name, stream_expression, stream, persist, view_pub);
-         _stream_pub_map.Add(name, u);
-      }
-
-      private void _expose_to_ws(string name, ViewStream stream)
-      {
-         // TODO: john
-      }
-
-      public void doWork()
-      {
-
-      }
-   }
-}

src/DataStreamSuite/DataStream/Offloading/RemoteQueryManager.cs

@@ -0,0 +1,122 @@
+using bts;
+
+using Bts.DataStream;
+using Bts.DataStreamCore;
+using Bts.DataStreamExpressions;
+using Bts.PubSub;
+
+using Microsoft.Extensions.Hosting;
+
+using Spark.Core.Disposables;
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Reactive.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace BCG {
+   // listens to the requests posted on "cloud_streams" request table, and 
+   // if unfulfilled starts a ViewPubsliher
+   public class RemoteQueryManager : IHostedService {
+      public class StreamPubUnit {
+         public string name;
+         public string stream_expression;
+         public ViewStream stream;
+         public bool persist;
+         public ViewPublisher view_publisher;
+
+         public StreamPubUnit(string name_, string stream_expression_, ViewStream stream_, bool persist_, ViewPublisher view_publisher_) {
+            name = name_;
+            stream_expression = stream_expression_;
+            stream = stream_;
+            persist = persist_;
+            view_publisher = view_publisher_;
+         }
+      }
+      static ViewStream? build_stream(string stream_expression)
+      {
+         try
+         {
+            var exp = DataStreamExpressionsInterpreter.Evaluate(stream_expression);
+            var rv = exp.getView(new Dictionary<string, StatementExpression>(0));
+            return rv;
+
+         } catch (Exception ex) {
+            bts.Log.assert(false, $"Could not build stream: {stream_expression} ex: {ex}");
+            return null;
+         }
+      }
+      private IDictionary<string, StreamPubUnit>
+         _stream_pub_map = new Dictionary<string, StreamPubUnit>();
+      readonly IPubTableBroker _broker;
+      readonly IManagedSubscriber _sub;
+      readonly object syncRoot = new();
+      IDisposable? cloudStreamsSub;
+      IDisposable? remoteRequestsSub;
+      bool isDisposed;
+
+
+      public RemoteQueryManager(IManagedSubscriber managedSubscriber, IPubTableBroker pubTableBroker) {
+         _sub = managedSubscriber;
+         _broker = pubTableBroker;
+      }
+
+      public Task StartAsync(CancellationToken cancellationToken) {
+         lock (syncRoot) {
+            Log.assert(!isDisposed);
+            Log.isnull(cloudStreamsSub);
+            Log.isnull(remoteRequestsSub);
+            cloudStreamsSub = new TableStream("cloud_streams").AsObservable().Subscribe(_on_str);
+            remoteRequestsSub = _sub.Observe("RemoteRequest").Subscribe(data => {
+               RemoteRequest req = RemoteRequest.construct_from_bytes(data);
+               _spawn_remote_stream(req.published_table_name, req.stream_expression, false);
+            });
+         }
+         return Task.CompletedTask;
+      }
+
+      public Task StopAsync(CancellationToken cancellationToken) {
+         lock (syncRoot) {
+            if (!isDisposed) {
+               isDisposed = true;
+               Disposable.dispose(ref cloudStreamsSub);
+               Disposable.dispose(ref remoteRequestsSub);
+            }
+         }
+         return Task.CompletedTask;
+      }
+
+      void _on_str(IDataPacket dp) {
+         foreach (IBlueRow r in dp.newRows)
+         {
+            string name = r.get<string>("name");
+            bool persist = r.get<bool>("persist");
+            string stream_exp = r.get<string>("stream_exp");
+            if (!_stream_pub_map.ContainsKey(name)) {
+               _spawn_remote_stream(name, stream_exp, persist);
+            }
+         }
+      }
+
+      private void _spawn_remote_stream(string name, string stream_expression, bool persist) {
+         bts.Log.Gen.info($"CloudStreamManager.assign name: {name} stream_expression: {stream_expression}");
+         ViewStream stream = build_stream(stream_expression);
+         _expose_to_ws(name, stream);
+         if (persist) {
+            string tempDir = Path.GetTempPath();
+        Directory.CreateDirectory(tempDir); // make sure it exists
+
+        stream = new PersistorStream(stream, name, tempDir, 10_000_000); // 10 MB
+         }
+         ViewPublisher view_pub = new ViewPublisher(name, _broker, stream);
+         StreamPubUnit u = new StreamPubUnit(name, stream_expression, stream, persist, view_pub);
+         _stream_pub_map.Add(name, u);
+      }
+
+      private void _expose_to_ws(string name, ViewStream stream) {
+         // TODO: john
+      }
+   }
+}

src/DataStreamSuite/DataStream/Offloading/RemoteQueryStream.cs

@@ -0,0 +1,48 @@
+using BCG;
+
+using bts;
+
+using System;
+
+namespace BCG {
+   // this is a stream so we can run it from the DSQA (since dsqa can only load streams)
+   [DataStreamUserRespresentation("remoteQuery")]
+   public class RemoteQueryStream : ViewStream {
+      private readonly string _name, _stream_exp;
+      private PublisherCore _publisher_core = PublisherCore.Create();
+      private ViewStream _source_str;
+
+      public RemoteQueryStream(params string[] lines) {
+         _stream_exp = get_expression(lines);
+         _name = Guid.NewGuid().ToString();
+         _name = $"remotereq_{DateTimeOffset.UtcNow.ToUnixTimeMilliseconds().ToString()}";
+         //_name.Replace("-", "_");
+
+      }
+
+      protected override void myOnFirstSubscriber() {
+         RemoteRequest rem_req = new RemoteRequest(_stream_exp, _name);
+         byte[] rem_req_bytes = rem_req.serialize();
+         _publisher_core.publish("System", "RemoteRequest", rem_req_bytes);
+         _source_str = new TableStream(_name);
+         _source_str.onChange += new ChangeDelegate(_handle_data);
+      }
+
+      protected override void myOnLastSubscriber() {
+         //maybe there should be a way to turn remote requests off ?
+         _source_str.onChange -= new ChangeDelegate(_handle_data);
+      }
+
+      static string get_expression(params string[] lines) {
+         for (int i = 0; i < lines.Length; i++) {
+            // unescape quotes
+            lines[i] = lines[i].Replace("\\\"", "\"");
+         }
+         return string.Join("\n", lines);
+      }
+
+      private void _handle_data(object o) {
+         myFireEvent(o);
+      }
+   }
+}

src/DataStreamSuite/DataStream/Offloading/RemoteRequest.cs

@@ -0,0 +1,28 @@
+namespace bts {
+   using System.IO;
+   using BCG;
+
+   public class RemoteRequest {
+      public readonly string stream_expression;
+      public readonly string published_table_name;
+      public RemoteRequest(string stream_expression_, string published_table_name_) {
+         stream_expression = stream_expression_;
+         published_table_name = published_table_name_;
+      }
+      public byte[] serialize() {
+         var str = new MemoryStream();
+         var bw = new BinaryWriter(str);
+         bw.write_string_cpp(stream_expression);
+         bw.write_string_cpp(published_table_name);
+         return str.ToArray();
+      }
+
+      public static RemoteRequest construct_from_bytes(byte[] ser_bytes) {
+         BinaryReader br = new BinaryReader(new MemoryStream(ser_bytes));
+         string stream_expression_ = br.read_string_cpp();
+         string published_table_name_ = br.read_string_cpp();
+         return new RemoteRequest(stream_expression_, published_table_name_);
+
+      }
+   }
+}

src/DataStreamSuite/DataStream/Offloading/StreamOffloadRequestor.cs

@@ -1,59 +1,54 @@
-using BCG;
+// using BCG;
 
-using System.Linq;
+// using bts;
 
-namespace BCG
-{
-   public class StreamOffloadRequestor
-   {
-      public class OffloadOp
-      {
-         string name;
-         string stream_exp;
-      }
-      private IBlueTableSchema _schema;
-      private IBlueRowCollection _rows;
-      private PubTableBroker _broker = new PubTableBroker();
-      ViewStream _existing_offloads_vs = new TableStream("cloud_streams");
-      public StreamOffloadRequestor()
-      {
-         _schema = new BlueTableSchema("cloud_streams",
-                                   new ColumnInfo("id", 0, typeof(int)),
-                                   new ColumnInfo("name", 1, typeof(string)),
-                                   new ColumnInfo("persist", 2, typeof(bool)),
-                                   new ColumnInfo("stream_exp", 3, typeof(string)));
-         _existing_offloads_vs.onChange += _on_str;
-      }
-      private void _on_str(object obj)
-      {
-         DataPacket dp = obj as DataPacket;
-         _rows = dp.newRows;
-         // this is needed so the broker knows the state of the table
-         _broker.createTable(_rows);
-      }
-      public void add_to_cloud(string name, string stream_exp, bool persist)
-      {
-         // check if it exists
-         if (_rows == null)
-         {
-            BlueTable table = new BlueTable(_schema);
-            IBlueRow nr = new BlueRow(_schema, 0, name, persist, stream_exp);
-            table.addRow(nr);
-            _broker.createTable(table);
-            // create table  
-         }
-         else
-         {
-            if (exists(name))
-               return;
-            IBlueRow nr = new BlueRow(_schema, _rows.Count, name, persist, stream_exp);
-            _broker.addRow(nr);
-         }
-      }
+// using System.Linq;
 
-      bool exists(string name)
-      {
-         return _rows.to_ienum().Where(r => name == r.get<string>("name")).Count() > 0;
-      }
-   }
-}
+// namespace BCG {
+//    // used on the client
+//    public class StreamOffloadRequestor {
+//       public class OffloadOp {
+//          string name;
+//          string stream_exp;
+//       }
+//       private IBlueTableSchema _schema;
+//       private IBlueRowCollection _rows;
+//       private PubTableBroker _broker = new PubTableBroker();
+//       ViewStream _existing_offloads_vs = new TableStream("cloud_streams");
+//       public StreamOffloadRequestor() {
+//          _schema = new BlueTableSchema("cloud_streams",
+//                                    new ColumnInfo("id", 0, typeof(int)),
+//                                    new ColumnInfo("name", 1, typeof(string)),
+//                                    new ColumnInfo("persist", 2, typeof(bool)),
+//                                    new ColumnInfo("stream_exp", 3, typeof(string)));
+//          _existing_offloads_vs.onChange += _on_str;
+//       }
+//       private void _on_str(object obj) {
+//          DataPacket dp = obj as DataPacket;
+//          _rows = dp.newRows;
+//          // this is needed so the broker knows the state of the table
+//          _broker.create_table(_rows);
+//       }
+//       public void add_to_cloud(string name, string stream_exp, bool persist) {
+//          // check if it exists
+//          if (_rows == null) {
+//             BlueTable table = new BlueTable(_schema);
+//             IBlueRow nr = new BlueRow(_schema, 0, name, persist, stream_exp);
+//             table.addRow(nr);
+//             _broker.create_table(table);
+//             // create table  
+//          } else {
+//             if (exists(name))
+//                return;
+//             IBlueRow nr = new BlueRow(_schema, _rows.Count, name, persist, stream_exp);
+//             // TODO: use make_batch_changes instead
+//             Log.assert(false, "Fix addRow");
+//             //_broker.addRow(nr);
+//          }
+//       }
+
+//       bool exists(string name) {
+//          return _rows.to_ienum().Where(r => name == r.get<string>("name")).Count() > 0;
+//       }
+//    }
+// }

src/DataStreamSuite/DataStream/Primitives/AddColumns/AddColumnsRow.cs

@@ -1,17 +1,14 @@
 using System;
 using System.Collections;
 
-namespace BCG
-{
-   internal class AddColumnsRow : IBlueRow
-   {
+namespace BCG {
+   internal class AddColumnsRow : IBlueRow {
       private IBlueTableSchema mySchema;
       private IBlueRow myRow;
       //private object[] myCachedValues;
 
       #region Constructors
-      public AddColumnsRow (IBlueTableSchema schema, IBlueRow row)
-      {
+      public AddColumnsRow(IBlueTableSchema schema, IBlueRow row) {
          mySchema = schema;
          myRow = row;
          //myCachedValues = new object[schema.columnNames.Length];
@@ -19,85 +16,78 @@ namespace BCG
       #endregion
 
       #region IBlueRow members
-      public IBlueTableSchema schema{get{return mySchema;}}
+      public IBlueTableSchema schema { get { return mySchema; } }
       #endregion
 
       #region ICollection members
-      public int Count {get{return mySchema.columnNames.Length;}}
+      public int Count { get { return mySchema.columnNames.Length; } }
 
-      public bool IsSynchronized {get{return false;}}
+      public bool IsSynchronized { get { return false; } }
 
-      public object SyncRoot {get{return this;}}
+      public object SyncRoot { get { return this; } }
 
-      public void CopyTo (Array array, int index)  
-      {
+      public void CopyTo(Array array, int index) {
          int i = index;
          foreach (object o in this as IEnumerable)
-            array.SetValue (o, i++);
+            array.SetValue(o, i++);
       }
       #endregion
 
       #region IDictionary members
-      public bool IsFixedSize {get{return true;}}
+      public bool IsFixedSize { get { return true; } }
 
-      public bool IsReadOnly {get{return true;}}
+      public bool IsReadOnly { get { return true; } }
 
       /// <summary>
       /// The key can either be the string corrsponding to the column name or
       /// the order of the column
       /// </summary>
-      public object this [object key]
-      {
-         get
-         {
+      public object this[object key] {
+         get {
             if (key is string)
                return this[(string)key];
             return this[(int)key];
          }
-         set {throw new NotSupportedException ("The IBlueRow is readonly");}
+         set { throw new NotSupportedException("The IBlueRow is readonly"); }
       }
 
-      public object this[int index]
-      {
-         get
-         {
+      public object this[int index] {
+         get {
             //if (myCachedValues[index] == null)
             //   myCachedValues[index] = mySchema[index].isConstant ? mySchema[index].colValue : myRow[index];
             //return myCachedValues[index];
-            return mySchema[index].isConstant ? mySchema[index].colValue : myRow[index];
+            return mySchema[index].isConstant ? DBNull.Value : myRow[index];
          }
       }
 
-      public object this[string colName]  {get{return this[mySchema[colName].colNo];}}
+      public object this[string colName] { get { return this[mySchema[colName].colNo]; } }
 
-      public ICollection Keys{get{return mySchema.columnNames;}}
+      public ICollection Keys { get { return mySchema.columnNames; } }
 
-      public ICollection Values
-      {
-         get
-         {
+      public ICollection Values {
+         get {
             object[] retVal = new object[mySchema.columnNames.Length];
-            CopyTo (retVal, 0);
+            CopyTo(retVal, 0);
             return retVal;
          }
       }
 
-      public void Add (object key, object value)   {throw new NotSupportedException ("The IBlueRow is readonly");}
+      public void Add(object key, object value) { throw new NotSupportedException("The IBlueRow is readonly"); }
 
-      public void Clear () {throw new NotSupportedException ("The IBlueRow is readonly");}
+      public void Clear() { throw new NotSupportedException("The IBlueRow is readonly"); }
 
-      public bool Contains (object key){return mySchema[(string)key] != null;}
+      public bool Contains(object key) { return mySchema[(string)key] != null; }
 
       /// <summary>
       /// Note, the default enumerator is the IDictionary's enumerator, so if user needs to
       /// iterate through the values, typecast this into an IEnumerable
       /// </summary>
       /// <returns></returns>
-      public IDictionaryEnumerator GetEnumerator() {return new BlueRowDictionaryEnumerator(this);}
-      
-      IEnumerator IEnumerable.GetEnumerator () {return new BlueRowEnumerator(this);}
+      public IDictionaryEnumerator GetEnumerator() { return new BlueRowDictionaryEnumerator(this); }
 
-      public void Remove (object key) {throw new NotSupportedException ("The IBlueRow is readonly");}
+      IEnumerator IEnumerable.GetEnumerator() { return new BlueRowEnumerator(this); }
+
+      public void Remove(object key) { throw new NotSupportedException("The IBlueRow is readonly"); }
       #endregion
 
    }

src/DataStreamSuite/DataStream/Primitives/AddColumns/AddColumnsStream.cs

@@ -1,6 +1,47 @@
-namespace BCG;
-
-public class AddColumnsStream : MapStream {
-   public AddColumnsStream(ViewStream vs, string columnDef)
-      : base(vs, new ColumnAdder(columnDef)) { }
-}
+using Spark.Core.Collections;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace BCG {   
+   public class AddColumnsStream : ViewStream {
+      public static (string Name, Type Type, object Value) parse_single_tok(string exp) {
+         string[] toks = exp.Split(':');
+         string col_name = toks[0].Trim();
+         string col_value = toks[1].Trim();
+         Tuple<Type, object> tup = BlueDataUtility.guess_type(col_value);
+         return (col_name, tup.Item1, tup.Item2);
+      }
+
+      public static List<(string Name, Type Type, object Value)> parse_exp(string exp) =>
+         exp.Split(",").ToList(t => parse_single_tok(t.Trim()));
+
+      readonly List<(string Name, Type Type, object Value)> _new_col_map;
+      IBlueTableSchema? _out_schema;
+
+      public AddColumnsStream(ViewStream vs, string col_def) {
+         _new_col_map = parse_exp(col_def);
+         ViewStream rs = new MapStream(vs, _get_schema, _map);
+         mySetRealSource(rs);
+      }
+
+      private IBlueTableSchema _get_schema(IBlueTableSchema input_schema) {
+         if (_out_schema == null) {
+            _out_schema = input_schema;
+            foreach (var m in _new_col_map) {
+               _out_schema = BlueDataUtility.add_column(_out_schema, m.Item1, m.Item2);
+            }
+         }
+         return _out_schema;
+      }
+
+      private IBlueRow _map(IBlueRow r) {
+         MutableBlueRow rv = new MutableBlueRow(_get_schema(r.schema), r);
+         foreach (var m in _new_col_map) {
+            rv.setValue(m.Name, m.Value);
+         }
+         return rv;
+      }
+   }
+}