fix build: Add a few includes, suppress some werrors

Not sure how this slipped through the cracks, but I'm guessing the build broke when we upgraded the cpp compilers (to clang 17 and gcc 13). * Include <cstdint> in a few places * Suppress -Wstringop-overflow in sparkd-gcc-release build * Change const char * param to explicit std::string for proper type deduction in call to 'std::make_tuple'. For some reason, the gcc build was failing with an array-bounds werror (changing the arg fixed it).
fix build: Remove version suffix from RuntimeIdentifiers in csprojs
2024-03-18 19:14:48 +00:00 · 2024-03-18 15:13:01 -04:00 · 2024-03-18 15:09:49 -04:00 · 2024-03-18 15:09:49 -04:00 · 2024-03-18 15:09:27 -04:00 · 2024-03-13 13:43:35 -05:00
3996 changed files with 92548 additions and 174566 deletions
@@ -9,7 +9,7 @@
      ]
    },
    "fable": {
-      "version": "4.24.0",
+      "version": "4.0.6",
      "commands": [
        "fable"
      ]
@@ -25,12 +25,6 @@
      "commands": [
        "fake"
      ]
-    },
-    "dotnet-t4": {
-      "version": "3.0.0",
-      "commands": [
-        "t4"
-      ]
    }
  }
-}
+}
@@ -1,38 +0,0 @@
-{
-  "build": {
-    "dockerfile": "../docker/images/bluetradingsystems/linux_dotnet8_dev/Dockerfile",
-    "options": [
-      "--secret",
-      "id=bitbucket_access_token,src=${localWorkspaceFolder}/.secrets/bitbucket_access_token.txt"
-    ]
-  },
-  "hostRequirements": {
-    "memory": "8gb",
-    "storage": "10gb"
-  },
-  "containerUser": "bts",
-  "updateRemoteUserUID": true,
-  "shutdownAction": "none",
-  // Note: If running multiple containers on the same host, each must use a
-  // unique set of ports. Usually we just add 1000 to each port as needed. For
-  // example, if 8000-8003 is taken, go with 9000-9003, then 10000-10003, etc.
-  "runArgs": [
-    "--shm-size",
-    "8gb"
-  ],
-  "mounts": [
-    "source=/var/run/docker.sock,target=/var/run/docker.sock,type=bind"
-  ],
-  "customizations": {
-    "vscode": {
-      "extensions": [
-        "eamodio.gitlens",
-        "llvm-vs-code-extensions.vscode-clangd",
-        "ms-python.python",
-        "ms-vscode.cmake-tools",
-        "ms-vscode.cpptools",
-        "xaver.clang-format"
-      ]
-    }
-  }
-}
@@ -1,64 +0,0 @@
-# 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
-#
-
-### Host/Runtime ###
-TZ=Etc/UTC
-
-### 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
-# Mount volume or dir to "/md_recording" inside the docker. Defaults to volume
-# "sparkd_md_recording_<config_port>" (e.g., sparkd_md_recording_8000).
-# SPARKD__MD_RECORDING_DIR=/home/bts/md_recording
-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
-SPARKD__SPARKD_ENTRYPOINT=src/app_sparkd/sparkd-entrypoint.sh
-SPARKD__MAIN_ENTRYPOINT=./sparkd-entrypoint.sh
-
-### 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.)
@@ -1,3 +0,0 @@
-*.cmd text=auto eol=crlf
-*.cs text=auto eol=crlf
-*.sh text=auto eol=lf
@@ -8,10 +8,7 @@ cmake-build-debug/
 .idea/
 .dir-locals.el
 *.pyc
-**.vscode/*
-!.vscode/launch.json
-!.vscode/tasks.json
-!.vscode/*.env
+**.vscode
 .vs
 obj/
 *.csproj.user
@@ -55,12 +52,8 @@ 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/
+**/.devcontainer
 *.Generated.cs
 *.lst
-.env.local
-.secrets
@@ -1,6 +1,6 @@
 [submodule "externals"]
 	path = externals
-	url = https://bitbucket.org/bluetradesys/externals.git
+	url = git@bitbucket.org:bluetradesys/externals.git
 [submodule "vcpkg"]
 	path = vcpkg
 	url = https://github.com/microsoft/vcpkg.git
@@ -1,499 +0,0 @@
-{
-  "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",
-      },
-      "cwd": "build/Debug/bin/net8.0",
-      "env": {
-        "DOTNET_ENVIRONMENT": "${input:pubSubServerEnvironment}",
-      },
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "PubSubServer (Skip Build)",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "",
-      "linux": {
-        "program": "PubSubServer",
-      },
-      "windows": {
-        "program": "PubSubServer.exe",
-      },
-      "cwd": "build/Debug/bin/net8.0",
-      "env": {
-        "DOTNET_ENVIRONMENT": "${input:pubSubServerEnvironment}",
-      },
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "Sdk Demo",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "",
-      "preLaunchTask": "Build Spark Sdk (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": [
-          "--Spark:ConfigServer",
-          "${input:sparkConfigServer}"
-        ],
-        "cwd": "build/Debug/bin/net8.0-windows",
-      },
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "Spark Test",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "",
-      "windows": {
-        "preLaunchTask": "Build Spark (Debug)",
-        "program": "Spark.Console.exe",
-        "cwd": "build/Debug/bin/net8.0",
-        "args": [
-          "test",
-          "${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": "pubSubServerEnvironment",
-      "type": "pickString",
-      "description": "PubSubServer Configuration",
-      "options": [
-        "Development",
-        "EchoServer",
-        "Local",
-      ],
-      "default": "Development",
-    },
-    {
-      "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",
-    },
-  ]
-}
@@ -1 +0,0 @@
-PYTHONPATH=/workspaces/spark/build/sparkd-debug-clang/src/lib_python_interop;/workspaces/spark/src/lib_python_interop/python_interop_plugins;/workspaces/spark/tools/py
@@ -1,102 +0,0 @@
-
-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
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-EndProject
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-		Release|x64 = Release|x64
-		Release|x86 = Release|x86
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
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-		{8949AF88-F1D3-4BC4-827F-B088B555F7B9}.Release|x86.Build.0 = Release|x64
-		{37E4E890-D025-4729-90F9-6F95862F47BC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{37E4E890-D025-4729-90F9-6F95862F47BC}.Debug|Any CPU.Build.0 = Debug|Any CPU
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-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(NestedProjects) = preSolution
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-		{E3BF9514-CB1A-4E07-A8DD-73300FD9726C} = {C5A3B5EA-BE9F-76E5-E9B8-8A22B289B295}
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-	EndGlobalSection
-EndGlobal
@@ -1,10 +1,7 @@
 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()
@@ -17,17 +14,12 @@ set(
  CACHE
  STRING
  "External dependencies root folder (should contain folders: lib, bin, include")
-
-# 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(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")
 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")
@@ -36,19 +28,32 @@ else()
  set(BUILD_ADMIN_WEB_APP ON CACHE BOOL "Build the Admin WebApp")
 endif()

-include_directories(BEFORE SYSTEM ${EXTERNALS_INCLUDE} ${EXTERNALS_ROOT}/include/zlib)
-link_directories(${EXTERNALS_LIB})
+include_directories(BEFORE SYSTEM ${SPARK_INCLUDE} ${EXTERNALS_ROOT}/include/zlib)
+link_directories(${SPARK_LIB})

-add_compile_definitions(SHARED_MEMORY_PREFIX="${SHARED_MEMORY_PREFIX}")
-if(DEFINED APP_DATA_DIR)
-  add_compile_definitions(APP_DATA_DIR="${APP_DATA_DIR}")
+if(BUILD_API_SERVER)
+  add_compile_definitions(SPARK_ENABLE_API_SERVER)
 endif()
-add_compile_definitions(EXPORT_MD_CONSUMER="${EXPORT_MD_CONSUMER}")
+
 if(WIN32)
+  add_compile_definitions(SHARED_MEMORY_PREFIX="spark")
+  add_compile_definitions(APP_DATA_DIR="\$\{APPDATA\}/bts/")
  # subdirs
-  add_subdirectory(src/lib_spark)
+  add_subdirectory(src/lib)
 else()
-  if(BUILD_SPARKD)
+  # make sparkd look for libspark.so in its directory
+  set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
+  set(CMAKE_INSTALL_RPATH ".")
+  set(CMAKE_INSTALL_PREFIX "${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/")
+
    # 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)
@@ -85,15 +90,9 @@ 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://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")
+    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")

    # ** Deribit **
    add_compile_definitions(DERIBIT_INSTRUMENT_PATH="/api/v2/public/get_instrument")
@@ -112,15 +111,11 @@ else()
  endif()

  # subdirs
-  add_subdirectory(src/lib_spark)
  if (BUILD_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/server/sparkd)
    add_subdirectory(src/data_files)
  endif()
+  add_subdirectory(src/lib)
  if (BUILD_ADMIN_WEB_APP)
    add_subdirectory(src/Spark.Admin.WebApp)
  endif()
@@ -130,4 +125,32 @@ 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()
@@ -8,31 +8,14 @@

  "configurePresets": [
    {
-      "name": "spark-base",
-      "hidden": true,
-      "binaryDir": "${sourceDir}/build/${presetName}",
-      "cacheVariables": {
-        "CMAKE_CXX_STANDARD": "20",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
-        "CMAKE_TOOLCHAIN_FILE": "${sourceDir}/vcpkg/scripts/buildsystems/vcpkg.cmake",
-        "CONFIG_DEFAULTS_PATH": "spark/config/profiles/default/*.conf",
-        "EXPORT_MD_CONSUMER": {
-          "type": "BOOL",
-          "value": "ON"
-        }
-      }
-    },
-
-    {
-      "name": "spark-windows",
-      "inherits": "spark-base",
-      "displayName": "Spark",
+      "name": "spark",
      "condition": {
        "type": "equals",
        "lhs": "${hostSystemName}",
        "rhs": "Windows"
      },
      "generator": "Visual Studio 17 2022",
+      "binaryDir": "${sourceDir}/build",
      "environment": {
        "SPARK_CMAKE_CXX_FLAGS": "/MP /WX /wd4250 /wd4251 /wd4244 /wd4267 /wd4355 /wd4275 /wd4345 /bigobj /EHsc /DCURL_STATICLIB /D_WINSOCK_DEPRECATED_NO_WARNINGS /D__TBB_NO_IMPLICIT_LINKAGE /DBOOST_ALL_NO_LIB /std:c++20 /D_SCL_SECURE_NO_WARNINGS /D_CRT_SECURE_NO_WARNINGS /D_WIN32_WINNT=0x0600"
      },
@@ -40,9 +23,14 @@
        "CMAKE_CXX_FLAGS": "$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",
-        "EXTERNALS_ROOT": "${sourceDir}/externals/windows"
+        "CMAKE_TOOLCHAIN_FILE": "${sourceDir}/vcpkg/scripts/buildsystems/vcpkg.cmake",
+        "EXTERNALS_ROOT": "${sourceDir}/externals/windows",
+        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf",
+        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net8.0",
+        "DOTNET_WINDOWS_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net8.0-windows"
      }
    },

@@ -60,18 +48,12 @@
        "platform": "",
        "CMAKE_BUILD_WITH_INSTALL_RPATH": {
          "type": "BOOL",
-          "value": "OFF"
+          "value": "ON"
        },
        "CMAKE_CXX_STANDARD": "20",
        "CMAKE_INSTALL_RPATH": ".",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
-        "CMAKE_PREFIX_PATH": "${sourceDir}/cmake/;${sourceDir}/.venv/lib/python3.10/site-packages/pybind11/share/cmake/pybind11",
+        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}/sparkd",
        "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",
@@ -95,7 +77,7 @@
          "value": "ON"
        },
        "CCAPI_LOG_LEVEL": "Info",
-        "CONFIG_DEFAULTS_PATH": "spark/config/profiles/md_dev/*.conf;spark/config/profiles/default/*.conf"
+        "CONFIG_DEFAULTS_PATH": "config/profiles/md_dev/*.conf;config/profiles/default/*.conf"
      }
    },

@@ -106,79 +88,106 @@
      "cacheVariables": {
        "CMAKE_BUILD_TYPE": "Release",
        "CCAPI_LOG_LEVEL": "Warn",
-        "CONFIG_DEFAULTS_PATH": "spark/config/profiles/md_prod/*.conf;spark/config/profiles/default/*.conf"
+        "CONFIG_DEFAULTS_PATH": "config/profiles/md_prod/*.conf;config/profiles/default/*.conf"
      }
    },

    {
      "name": "sparkd-debug-clang",
      "inherits": "sparkd-debug",
-      "displayName": "Sparkd (Debug | Clang)",
+      "displayName": "Debug (clang)",
      "description": "Debug build compiled w/ clang",
+      "binaryDir": "${sourceDir}/build/clang/debug",
      "cacheVariables": {
        "CMAKE_C_COMPILER": "clang",
        "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG"
+        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG",
+        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/clang/debug/sparkd"
      }
    },

    {
      "name": "sparkd-debug-gcc",
      "inherits": "sparkd-debug",
-      "displayName": "Sparkd (Debug | Gcc)",
+      "displayName": "Debug (gcc)",
      "description": "Debug build compiled w/ gcc",
+      "binaryDir": "${sourceDir}/build/gcc/debug",
      "cacheVariables": {
        "CMAKE_C_COMPILER": "gcc",
        "CMAKE_CXX_COMPILER": "g++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -Wno-stringop-overread -DDEBUG"
+        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -Wno-stringop-overread -DDEBUG",
+        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/gcc/debug/sparkd"
      }
    },

    {
      "name": "sparkd-release-clang",
      "inherits": "sparkd-release",
-      "displayName": "Sparkd (Release | Clang)",
+      "displayName": "Release (clang)",
      "description": "Release build compiled w/ clang",
+      "binaryDir": "${sourceDir}/build/clang/release",
      "cacheVariables": {
        "CMAKE_C_COMPILER": "clang",
        "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3"
+        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3",
+        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/clang/release/sparkd"
      }
    },

    {
      "name": "sparkd-release-gcc",
      "inherits": "sparkd-release",
-      "displayName": "Sparkd (Release | Gcc)",
+      "displayName": "Release (gcc)",
      "description": "Release build compiled w/ gcc",
+      "binaryDir": "${sourceDir}/build/gcc/release",
      "cacheVariables": {
        "CMAKE_C_COMPILER": "gcc",
        "CMAKE_CXX_COMPILER": "g++",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers -Wno-stringop-overflow --std=c++20 -fdiagnostics-color -Wno-stringop-overread -Wno-maybe-uninitialized -fno-omit-frame-pointer -DNDEBUG -O3"
+        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers -Wno-stringop-overflow --std=c++20 -fdiagnostics-color -Wno-stringop-overread -Wno-maybe-uninitialized -fno-omit-frame-pointer -DNDEBUG -O3",
+        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/gcc/release/sparkd"
      }
    },

    {
-      "name": "spark-linux",
-      "inherits": "spark-base",
-      "displayName": "Spark",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Linux"
-      },
+      "name": "spark-api-server-base",
+      "hidden": true,
+      "binaryDir": "${sourceDir}/build/${presetName}",
+      "cacheVariables": {
+        "BUILD_API_SERVER": {
+          "type": "bool",
+          "value": "ON"
+        },
+        "CONFIG_DEFAULTS_PATH": "config/profiles/md_dev/*.conf;config/profiles/default/*.conf"
+      }
+    },
+
+    {
+      "name": "spark-api-server-windows",
+      "inherits": "spark",
+      "displayName": "Spark Api Server",
+      "cacheVariables": {
+        "BUILD_API_SERVER": {
+          "type": "bool",
+          "value": "ON"
+        }
+      }
+    },
+
+    {
+      "name": "spark-api-server-linux",
+      "inherits": "sparkd",
+      "displayName": "Spark Api Server",
      "generator": "Ninja Multi-Config",
      "cacheVariables": {
-        "platform": "linux",
        "BUILD_ADMIN_WEB_APP": {
          "type": "BOOL",
          "value": "OFF"
        },
-        "BUILD_SPARKD": {
-          "type": "BOOL",
-          "value": "OFF"
+        "BUILD_API_SERVER": {
+          "type": "bool",
+          "value": "ON"
        },
-        "CMAKE_BUILD_WITH_INSTALL_RPATH": {
+        "BUILD_SPARKD": {
          "type": "BOOL",
          "value": "OFF"
        },
@@ -186,18 +195,9 @@
        "CMAKE_CXX_COMPILER": "clang++",
        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG",
        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3",
-        "CMAKE_EXE_LINKER_FLAGS": "-Wno-undef",
-        "CMAKE_EXPORT_COMPILE_COMMANDS": {
-          "type": "BOOL",
-          "value": "ON"
-        },
-        "CMAKE_INSTALL_RPATH": ".",
-        "CMAKE_PREFIX_PATH": "${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"
+        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
+        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf",
+        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net8.0"
      }
    },

@@ -217,32 +217,44 @@
      "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-windows",
+      "name": "spark",
      "condition": {
        "type": "equals",
        "lhs": "${hostSystemName}",
        "rhs": "Windows"
      },
-      "hidden": true,
-      "configurePreset": "spark-windows"
+      "hidden": true
    },

    {
-      "name": "spark-windows-debug",
-      "displayName": "Spark (Debug)",
-      "inherits": "spark-windows",
+      "name": "spark-debug",
+      "displayName": "Debug",
+      "inherits": "spark",
+      "configurePreset": "spark",
      "configuration": "Debug"
    },

    {
-      "name": "spark-windows-release",
-      "displayName": "Spark (Release)",
-      "inherits": "spark-windows",
+      "name": "spark-release",
+      "displayName": "Release",
+      "inherits": "spark",
+      "configurePreset": "spark",
      "configuration": "Release"
    },

@@ -253,59 +265,93 @@
        "lhs": "${hostSystemName}",
        "rhs": "Linux"
      },
-      "hidden": true
+      "hidden": true,
+      "targets": [
+        "data_files_dir",
+        "admin_web_app_bundle",
+        "install",
+        "libspark",
+        "rapidjson_project",
+        "server_layout",
+        "sparkd"
+      ]
    },

    {
      "name": "sparkd-debug-clang",
      "configurePreset": "sparkd-debug-clang",
-      "displayName": "Sparkd (Debug | Clang)",
+      "displayName": "Debug (clang)",
      "inherits": "sparkd"
    },

    {
      "name": "sparkd-debug-gcc",
      "configurePreset": "sparkd-debug-gcc",
-      "displayName": "Sparkd (Debug | Gcc)",
+      "displayName": "Debug (gcc)",
      "inherits": "sparkd"
    },

    {
      "name": "sparkd-release-clang",
      "configurePreset": "sparkd-release-clang",
-      "displayName": "Sparkd (Release | Clang)",
+      "displayName": "Release (clang)",
      "inherits": "sparkd"
    },

    {
      "name": "sparkd-release-gcc",
      "configurePreset": "sparkd-release-gcc",
-      "displayName": "Sparkd (Release | Gcc)",
+      "displayName": "Release (gcc)",
      "inherits": "sparkd"
    },

    {
-      "name": "spark-linux",
+      "name": "spark-api-server-windows",
+      "condition": {
+        "type": "equals",
+        "lhs": "${hostSystemName}",
+        "rhs": "Windows"
+      },
+      "hidden": true,
+      "configurePreset": "spark-api-server-windows"
+    },
+
+    {
+      "name": "spark-api-server-windows-debug",
+      "displayName": "Spark Api Server (Debug)",
+      "inherits": "spark-api-server-windows",
+      "configuration": "Debug"
+    },
+
+    {
+      "name": "spark-api-server-windows-release",
+      "displayName": "Spark Api Server (Debug)",
+      "inherits": "spark-api-server-windows",
+      "configuration": "Release"
+    },
+
+    {
+      "name": "spark-api-server-linux",
      "condition": {
        "type": "equals",
        "lhs": "${hostSystemName}",
        "rhs": "Linux"
      },
      "hidden": true,
-      "configurePreset": "spark-linux"
+      "configurePreset": "spark-api-server-linux"
    },

    {
-      "name": "spark-linux-debug",
-      "inherits": "spark-linux",
-      "displayName": "Spark (Linux | Debug)",
+      "name": "spark-api-server-linux-debug",
+      "inherits": "spark-api-server-linux",
+      "displayName": "Spark Api Server (Debug)",
      "configuration": "Debug"
    },

    {
-      "name": "spark-linux-release",
-      "inherits": "spark-linux",
-      "displayName": "Spark (Linux | Release)",
+      "name": "spark-api-server-linux-release",
+      "inherits": "spark-api-server-linux",
+      "displayName": "Spark Api Server (Release)",
      "configuration": "Release"
    },

@@ -322,6 +368,20 @@
      "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"
    }
  ]
 }
@@ -1,11 +1,10 @@
-
-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}") = "Bts.Spark.Api", "src\cs\Bts.Spark.Api\Bts.Spark.Api.csproj", "{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api", "src\client\spark_api\spark_api.csproj", "{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bts.Spark.Core", "src\cs\Bts.Spark.Core\Bts.Spark.Core.csproj", "{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_core", "src\client\spark_core\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
@@ -15,584 +14,66 @@ 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
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PubSub", "src\DataStreamSuite\PubSub\PubSub.csproj", "{14140310-2233-430A-821B-F3058A25234B}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BaseUtilities", "src\DataStreamSuite\BaseUtilities\BaseUtilities.csproj", "{43146EA8-6FCC-46B8-88B0-42F9BB5E6E0A}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ExpressionCore", "src\DataStreamSuite\ExpressionCore\ExpressionCore.csproj", "{6F22DB96-6EAB-4034-99D9-287021C36F01}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ArithmeticExpressions", "src\DataStreamSuite\ArithmeticExpressions\ArithmeticExpressions.csproj", "{A5C33956-A41F-49B3-A41D-1082CBA59D02}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataStreamExpressions", "src\DataStreamSuite\DataStreamExpressions\DataStreamExpressions.csproj", "{2FE745C3-1EDF-4421-8CD7-A63EE0C1AE43}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.ColumnSortExpressions", "src\DataStreamSuite\Bts.ColumnSortExpressions\Bts.ColumnSortExpressions.csproj", "{FDA791E0-2B91-4AD5-B91D-CF920A4C4E38}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ColumnMapExpressions", "src\DataStreamSuite\ColumnMapExpressions\ColumnMapExpressions.csproj", "{B945A183-2174-4ACB-B289-8A5C546656FE}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BooleanExpressions", "src\DataStreamSuite\BooleanExpressions\BooleanExpressions.csproj", "{9F6D7DE8-185B-4C1D-B809-3314D092DF28}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.ColumnExpressions", "src\DataStreamSuite\Bts.ColumnExpressions\Bts.ColumnExpressions.csproj", "{6BD3F6D8-B6FC-44E8-B8FE-06352F638B9B}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataStream", "src\DataStreamSuite\DataStream\DataStream.csproj", "{39AEA075-6457-46C0-8821-1158BE6EFA57}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Extensions.Hosting", "src\cs\Bts.Extensions.Hosting\Bts.Extensions.Hosting.csproj", "{F3DC52D7-8C59-4EC0-86D9-0E5732EAFCF7}"
-EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "cs", "cs", "{385C4948-E080-56A6-E29E-8B0F4913175C}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Net", "src\cs\Bts.Net\Bts.Net.csproj", "{43FB297B-7A4D-4835-A878-E6DF345B580C}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.IO.Compression", "src\cs\Bts.IO.Compression\Bts.IO.Compression.csproj", "{BC277499-8215-4F9F-B9AB-07B6391110BF}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64
-		Debug|Any CPU = Debug|Any CPU
-		Debug|x86 = Debug|x86
 		MinSizeRel|x64 = MinSizeRel|x64
-		MinSizeRel|Any CPU = MinSizeRel|Any CPU
-		MinSizeRel|x86 = MinSizeRel|x86
 		Release|x64 = Release|x64
-		Release|Any CPU = Release|Any CPU
-		Release|x86 = Release|x86
 		RelWithDebInfo|x64 = RelWithDebInfo|x64
-		RelWithDebInfo|Any CPU = RelWithDebInfo|Any CPU
-		RelWithDebInfo|x86 = RelWithDebInfo|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
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-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Debug|x86.Build.0 = Debug|Any CPU
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-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Release|Any CPU.Build.0 = Release|Any CPU
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-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Release|x86.Build.0 = Release|Any CPU
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-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x86.Build.0 = RelWithDebInfo|Any CPU
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-		{39AEA075-6457-46C0-8821-1158BE6EFA57}.RelWithDebInfo|x86.Build.0 = RelWithDebInfo|Any CPU
-		{F3DC52D7-8C59-4EC0-86D9-0E5732EAFCF7}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{F3DC52D7-8C59-4EC0-86D9-0E5732EAFCF7}.Debug|x64.Build.0 = Debug|Any CPU
-		{F3DC52D7-8C59-4EC0-86D9-0E5732EAFCF7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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 	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}
-	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {422D1620-0166-4C26-9A81-CA8A2EB1AB58}
 	EndGlobalSection
@@ -1,7 +0,0 @@
-include_guard(GLOBAL)
-
-macro(export_to_parent)
-  foreach(var IN ITEMS ${ARGN})
-    set(${var} ${${var}} PARENT_SCOPE)
-  endforeach()
-endmacro()
@@ -1,48 +0,0 @@
-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()
@@ -1,142 +0,0 @@
-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()
@@ -1,71 +0,0 @@
-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()
@@ -1,65 +0,0 @@
-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 ${CMAKE_INSTALL_BINDIR})
-endfunction()
@@ -1,39 +0,0 @@
-include_guard(DIRECTORY)
-include(GNUInstallDirs)
-include(${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()
@@ -1,44 +0,0 @@
-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()
@@ -0,0 +1,145 @@
+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()
+
@@ -1,83 +0,0 @@
-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()
-
@@ -1,61 +0,0 @@
-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}" "${_cfg_defaults_str}")
-  endif()
-endfunction()
-
@@ -1,49 +0,0 @@
-include_guard(DIRECTORY)
-
-function(protobuf_generate_fs)
-  set(_options)
-  set(_one_value_args TARGET_NAME OUT_DIR PROTOC)
-  set(_multi_value_args PROTO_INCLUDE_DIRS PROTO_SOURCES)
-  cmake_parse_arguments(_ARGS "${_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 "${_outputs}")
-endfunction()
@@ -1,33 +0,0 @@
-include_guard(DIRECTORY)
-
-function(protobuf_generate_js)
-  set(_options)
-  set(_one_value_args TARGET_NAME OUTPUT)
-  set(_multi_value_args PROTO_INCLUDE_DIRS PROTO_SOURCES)
-  cmake_parse_arguments(_ARGS "${_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()
@@ -1,10 +0,0 @@
-include_guard(GLOBAL)
-
-macro(set_first_defined RESULT)
-  foreach(_arg ${ARGN})
-    if (DEFINED ${_arg})
-      set(${RESULT} ${${_arg}})
-      break()
-    endif()
-  endforeach()
-endmacro()
@@ -1,49 +0,0 @@
-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()
@@ -1,39 +0,0 @@
-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()
@@ -1,9 +0,0 @@
-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()
@@ -1,11 +0,0 @@
-#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
@@ -1,11 +0,0 @@
-#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
@@ -0,0 +1,24 @@
+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})
@@ -1,254 +0,0 @@
-services:
-  sparkd:
-    volumes:
-      - ${SPARKD__DATA_DIR:-sparkd_data}:/home/bts/.local/share/bts/sparkd/data
-      - ${SPARKD__MD_RECORDING_DIR:-md_recording}:/md_recording
-    build:
-      dockerfile: src/app_sparkd/Dockerfile
-      args:
-        - IMAGE=${SPARKD__IMAGE}
-        - SOURCE_DIR=${SPARKD__SOURCE_DIR}
-        - CONFIG_DIR=${SPARKD__CONFIG_DIR}
-        - PYTHON_REQUIREMENTS=${SPARKD__PYTHON_REQUIREMENTS}
-        - SPARKD_ENTRYPOINT=${SPARKD__SPARKD_ENTRYPOINT}
-    shm_size: "${SPARKD__SHM_SIZE:-512mb}"
-    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}"
-    entrypoint: ${SPARKD__MAIN_ENTRYPOINT}
-    deploy:
-      resources:
-        limits:
-          memory: "${SPARKD__MEMORY:-4gb}"
-
-  sparkd-shell:
-    volumes:
-      - ${SPARKD__DATA_DIR:-sparkd_data}:/home/bts/.local/share/bts/sparkd/data
-      - ${SPARKD__MD_RECORDING_DIR:-md_recording}:/md_recording
-    build:
-      dockerfile: docker/images/bluetradingsystems/linux_shell/Dockerfile
-      args:
-        - IMAGE=${SPARKD__IMAGE}
-        - SOURCE_DIR=${SPARKD__SOURCE_DIR}
-        - CONFIG_DIR=${SPARKD__CONFIG_DIR}
-        - PYTHON_REQUIREMENTS=${SPARKD__PYTHON_REQUIREMENTS}
-        - SPARKD_ENTRYPOINT=${SPARKD__SPARKD_ENTRYPOINT}
-    shm_size: "${SPARKD__SHM_SIZE:-512mb}"
-    command: "do sleep 1; done"
-    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__MD_RECORDING_DIR:-md_recording}:/md_recording
-      - ${SPARKD__RUNTIME_CONF_DIR:-sparkd_conf}:/home/bts/.local/share/bts/sparkd/conf
-    build:
-      dockerfile: src/app_sparkd/Dockerfile
-      args:
-        - IMAGE=${SPARKD__IMAGE}
-        - SOURCE_DIR=${SPARKD__SOURCE_DIR}
-        - CONFIG_DIR=${SPARKD__CONFIG_DIR}
-        - PYTHON_REQUIREMENTS=${SPARKD__PYTHON_REQUIREMENTS}
-        - SPARKD_ENTRYPOINT=${SPARKD__SPARKD_ENTRYPOINT}
-    shm_size: "${SPARKD__SHM_SIZE:-512mb}"
-    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}"
-    entrypoint: ${SPARKD__MAIN_ENTRYPOINT}
-    deploy:
-      restart_policy:
-        condition: any
-        delay: 3s
-      resources:
-        limits:
-          memory: "${SPARKD__MEMORY:-4gb}"
-  sparkd-multicast:
-    environment:
-      - TZ=America/Chicago
-    volumes:
-      - ${SPARKD__DATA_DIR:-sparkd_data}:/home/bts/.local/share/bts/sparkd/data
-      - ${SPARKD__MD_RECORDING_DIR:-md_recording}:/md_recording
-      - ${SPARKD__RUNTIME_CONF_DIR:-sparkd_conf}:/home/bts/.local/share/bts/sparkd/conf
-    build:
-      dockerfile: src/app_sparkd/Dockerfile
-      args:
-        - IMAGE=${SPARKD__IMAGE}
-        - SOURCE_DIR=${SPARKD__SOURCE_DIR}
-        - CONFIG_DIR=${SPARKD__CONFIG_DIR}
-        - PYTHON_REQUIREMENTS=${SPARKD__PYTHON_REQUIREMENTS}
-        - SPARKD_ENTRYPOINT=${SPARKD__SPARKD_ENTRYPOINT}
-    shm_size: "${SPARKD__SHM_SIZE:-8192mb}"
-    env_file:
-      - .env
-      - ${SPARKD__CONFIG_DIR}/.env
-    network_mode: "host"
-    entrypoint: ${SPARKD__MAIN_ENTRYPOINT}
-    deploy:
-      restart_policy:
-        condition: any
-        delay: 3s
-      resources:
-        limits:
-          memory: "${SPARKD__MEMORY:-16gb}"
-  
-  
-  sparkd-multicast-cert:
-    environment:
-      - TZ=America/Chicago
-    volumes:
-      - ${SPARKD__DATA_DIR:-sparkd_data}:/home/bts/.local/share/bts/sparkd/data
-      - ${SPARKD__MD_RECORDING_DIR:-md_recording}:/md_recording
-      - ${SPARKD__RUNTIME_CONF_DIR:-sparkd_conf}:/home/bts/.local/share/bts/sparkd/conf
-    build:
-      dockerfile: src/app_sparkd/Dockerfile
-      args:
-        - IMAGE=${SPARKD__IMAGE}
-        - SOURCE_DIR=${SPARKD__SOURCE_DIR}
-        - CONFIG_DIR=${SPARKD__CONFIG_DIR}
-        - PYTHON_REQUIREMENTS=${SPARKD__PYTHON_REQUIREMENTS}
-        - SPARKD_ENTRYPOINT=${SPARKD__SPARKD_ENTRYPOINT}
-    shm_size: "${SPARKD__SHM_SIZE:-8192mb}"
-    env_file:
-      - .env
-      - ${SPARKD__CONFIG_DIR}/.env
-    network_mode: "host"
-    entrypoint: ${SPARKD__MAIN_ENTRYPOINT}
-    deploy:
-      restart_policy:
-        condition: any
-        delay: 3s
-      resources:
-        limits:
-          memory: "${SPARKD__MEMORY:-16gb}"
-  
-  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"
-  md_recording:
-    name: "sparkd_md_recording_${SPARKD__CONFIG_PORT:-8000}"
-    external: true
@@ -124,8 +124,8 @@ service OrderService {
 ```
 ### C++ Example
 ```cpp
-#include "spark/api/public/ServiceContext.h"
-#include "spark/api/services/OrderService.client.pb.h"
+#include "lib/api/public/ServiceContext.h"
+#include "lib/api/services/OrderService.client.pb.h"
 using namespace bts::api;
 ServiceContext ctx;
 auto orders = ctx.locate<orderman::OrderService>();
@@ -29,9 +29,9 @@ namespace sample {
 ```

 ```cpp
-#include "spark/api/public/ServiceContext.h"
-#include "spark/domain_model/Security.h"
-#include "spark/api/services/MarketDataService.client.pb.h"
+#include "lib/api/public/ServiceContext.h"
+#include "spark/lib/domain_model/Security.h"
+#include "lib/api/services/MarketDataService.client.pb.h"
 #include <thread>

 using namespace bts::api;
@@ -1,942 +0,0 @@
-# Security ID handling in `sparkd`
-
-This document traces how security identifiers are created, translated, persisted,
-indexed, and published by the `sparkd` market-data paths. It focuses on the
-legacy CME MDP3/OnixS pipeline and the newer generalized market-data pipeline.
-
-## Executive summary
-
-`sparkd` uses two identifiers that must not be confused:
-
-| Identifier | Meaning | Typical field | Lifetime |
-|---|---|---|---|
-| Exchange/feed ID | The venue's identifier used to route incoming definitions, books, and trades | `FixedSecurity::numeric_id`, `ExchangeKey`, or `domain::Security::security_common.exchange_sec_id` | Feed/session-specific unless the source guarantees stability |
-| Spark security key | Spark's internal non-zero identifier used in shared memory, APIs, orders, positions, and downstream services | `FixedSecurity::key`, `api::Security::id()`, `SecurityKey`; historically also called `security_id` | Intended to be stable across restarts |
-
-`invalid_security_key` is `0`; a security with key `0` is not yet publicly
-discoverable through the shared-memory consumer path.
-
-The two principal paths differ:
-
- **MDP3/OnixS:** the definition callback sets only the CME ID in
-  `numeric_id`. `MDProducer::add_security()` allocates the shared-memory entry
-  with key `0`. `SecurityIDRecorder`, driven by a 200 ms dispatcher timer,
-  resolves or inserts a stable key in `key_ids.sqlite`; its callback finally
-  calls `MDProducerHandle::set_key()`.
- **Generalized/newer pipeline:** `GeneralMarketDataListener::on_securities()`
-  currently uses the ID already present on the incoming domain security
-  (`use_given_sec_key == true`). Live adapters normally obtain that ID
-  synchronously from `IDGenerator` first. `_copy_security_common()` then copies
-  it to both `FixedSecurity::key` and `numeric_id`, so
-  `MDProducer::add_security()` publishes it synchronously. Only the listener's
-  own fallback `IDGenerator` call is bypassed by the current constant.
-
-## End-to-end diagrams
-
-### CME MDP3 / OnixS
-
-```mermaid
-sequenceDiagram
-    participant FE as OnixS feed-engine thread
-    participant L as MDP3Listener
-    participant P as MDProducer / shared memory
-    participant Q as SecurityIDRecorder queues
-    participant D as sparkd dispatcher thread
-    participant DB as key_ids.sqlite
-
-    FE->>L: instrument definition (CME SecurityID)
-    L->>L: set_security_common() - numeric_id = CME SecurityID, key remains 0
-    L->>P: add_security(FixedSecurity)
-    P->>P: allocate hot + cold entries with key 0
-    P->>Q: ensure_key(handle)
-    L->>L: index[CME SecurityID] = handle
-    Note over FE,L: Books can route by CME ID while the Spark key is pending
-    D->>Q: every 200 ms - work_spreads(), work_handles(), work_db()
-    Q->>DB: find (namespace, descriptor), or insert a new row
-    DB-->>Q: SQLite rowid = Spark security key
-    Q->>P: handle.set_key(rowid)
-    P->>P: hot.key first, then cold security.key, then increment security_count
-    Note over P: The security is now public to shared-memory consumers
-```
-
-### Generalized/newer pipeline (current behavior)
-
-```mermaid
-sequenceDiagram
-    participant A as Venue adapter / plugin
-    participant DB as IDGenerator / key_ids.sqlite
-    participant G as GeneralMarketDataListener
-    participant I as GeneralSecurityIndex
-    participant P as MDProducer / shared memory
-
-    A->>DB: get_or_add(venue, type, adapter key)
-    DB-->>A: SQLite rowid as domain SecurityID
-    A->>G: on_securities(domain Security list with ID)
-    G->>G: _find_sec() - use incoming security_common.id
-    G->>G: _copy_security_common() - key = id, numeric_id = id
-    G->>P: add_security(FixedSecurity with non-zero key)
-    P->>P: set_key() during add_security()
-    G->>I: index[id] = handle
-    Note over G,P: No asynchronous ID assignment in the current configuration
-```
-
-## Data-flow charts
-
-The sequence diagrams above emphasize timing and thread transitions. These
-flowcharts emphasize which identifier is carried through each representation
-and where data is retained.
-
-### MDP3 / legacy data flow
-
-```mermaid
-flowchart TD
-    CME["CME MDP3 packets<br/>CME SecurityID"] --> ONIXS["OnixS feed engine<br/>decode definition and updates"]
-
-    ONIXS --> DEF["MDP3Listener definition callback"]
-    DEF --> FIXED["FixedSecurity<br/>numeric_id = CME SecurityID<br/>key = 0"]
-
-    FIXED --> PRODUCER["MDProducer::add_security"]
-    PRODUCER --> PENDING["Hot and cold shared memory<br/>allocated but not public<br/>key = 0"]
-    PRODUCER --> QUEUE["SecurityIDRecorder<br/>pending_handle queue"]
-
-    FIXED --> CMEINDEX["CMESecurityIndex<br/>CME SecurityID to handle"]
-
-    QUEUE --> TIMER["Dispatcher timer<br/>every 200 ms"]
-    TIMER --> LEGS{"Spread legs<br/>all resolved?"}
-    LEGS -- No --> UNRESOLVED["unresolved_legs<br/>exchange IDs awaiting keys"]
-    UNRESOLVED --> CMEINDEX
-    CMEINDEX --> LEGS
-    LEGS -- Yes or outright --> LOGICAL["Logical identity<br/>venue + type + security_desc"]
-
-    LOGICAL --> SELECT["SQLite SELECT<br/>key_ids.sqlite"]
-    SELECT -- Existing row --> ROWID["SQLite rowid<br/>Spark security key"]
-    SELECT -- Missing row --> INSERT["Batched SQLite INSERT"]
-    INSERT --> ROWID
-
-    ROWID --> SETKEY["MDProducerHandle::set_key"]
-    SETKEY --> HOT["Write hot-entry key"]
-    HOT --> COLD["Write cold security key"]
-    COLD --> COUNT["Increment security_count"]
-    COUNT --> PUBLIC["Public security<br/>visible to MDConsumer"]
-
-    ONIXS --> UPDATE["Book, trade, status, or RFQ<br/>carrying CME SecurityID"]
-    UPDATE --> CMEINDEX
-    CMEINDEX --> HANDLE["MDProducerHandle"]
-    HANDLE --> LIVE["Update live shared-memory data"]
-    PUBLIC --> LIVE
-```
-
-The CME index is usable before the Spark key is assigned, so feed updates can
-reach the internal handle while the security is still hidden from consumers.
-The persistent rowid crosses the publication boundary only at `set_key()`.
-
-### Generalized/newer data flow
-
-```mermaid
-flowchart TD
-    FEED["Venue feed, Databento,<br/>Python plugin, or replay"] --> ADAPTER["Source adapter<br/>build domain::Security"]
-
-    ADAPTER --> IDTYPE{"Live definition or<br/>recorded/pre-keyed input?"}
-    IDTYPE -- Live --> IDINPUT["Logical identity<br/>venue + type + adapter-chosen name"]
-    IDINPUT --> MUTEX["IDGenerator global mutex"]
-    MUTEX --> SELECT["Synchronous SQLite SELECT<br/>key_ids.sqlite"]
-    SELECT -- Existing row --> ROWID["SQLite rowid"]
-    SELECT -- Missing row --> INSERT["Synchronous SQLite INSERT<br/>autocommit"]
-    INSERT --> ROWID
-    ROWID --> DOMAINID["domain::SecurityID<br/>used as Spark ID"]
-    IDTYPE -- Recorded or pre-keyed --> DOMAINID
-
-    DOMAINID --> DOMAINSEC["SecurityCommon::id = Spark ID"]
-    DOMAINSEC --> LISTENER["GeneralMarketDataListener::on_securities"]
-    LISTENER --> CCMAP["cc_sec_id_map<br/>incoming ID to Spark ID"]
-    LISTENER --> CONVERT["_copy_security_common<br/>FixedSecurity.key = ID<br/>numeric_id = ID"]
-
-    CONVERT --> PRODUCER["MDProducer::add_security"]
-    PRODUCER --> SETKEY["Immediate set_key<br/>no recorder timer"]
-    SETKEY --> SHM["Hot and cold shared memory<br/>immediately public"]
-    CONVERT --> GENERALINDEX["GeneralSecurityIndex<br/>ID to handle"]
-
-    FEED --> EVENT["Book, trade, or statistics<br/>with exchange/source identity"]
-    EVENT --> EVENTMAP["Adapter map<br/>source identity to domain::SecurityID"]
-    EVENTMAP --> EVENTID["Event carries domain::SecurityID"]
-    EVENT --> PYHOT["Python bridge only<br/>synchronous IDGenerator lookup"]
-    PYHOT --> EVENTID
-    PYHOT -. uses same mutex and SQLite path .-> MUTEX
-    EVENTID --> CCMAP
-    CCMAP --> GENERALINDEX
-    GENERALINDEX --> HANDLE["MDProducerHandle"]
-    HANDLE --> SHMUPDATE["Update book, trade,<br/>statistics, or status"]
-    SHM --> SHMUPDATE
-
-```
-
-In the normal newer live path, persistence occurs before the definition enters
-the generalized listener. The DB call therefore adds synchronous adapter-side
-latency, but publication needs no later timer. Most adapters use an in-memory
-map for subsequent events; the dotted Python path is the documented exception.
-
-## The publication boundary
-
-`MDProducerHandle::set_key()` is the definitive publication point for the
-legacy shared-memory representation. Its write ordering is intentional:
-
-1. Write the key into the hot book entry (`HotEntry` or `HotDepthEntry`).
-2. Write the key into the cold security entry.
-3. Increment the cold header's public `security_count`.
-
-The cold security key is written last because consumers treat a non-zero cold
-key as visibility. At that moment the corresponding hot entry must already be
-addressable. `set_key()` only permits the transition from `0` to one key; it is
-not a key-update mechanism.
-
-## Identifier representations
-
-The names are historically inconsistent. In particular, many protobuf fields
-named `security_id` contain the **Spark key**, not the exchange's ID.
-
-| Layer | Exchange/feed identifier | Spark identifier |
-|---|---|---|
-| MDP3 wire/OnixS | `securityId()` | not present |
-| Legacy fixed security | `FixedSecurity::numeric_id` (`uint64_t`) | `FixedSecurity::key` / `security_key` (`uint32_t`) |
-| Legacy API security | venue-specific `exchange_id` | top-level `Security.id()` |
-| New domain model | `SecurityCommon::exchange_sec_id` (string) is descriptive; `SecurityCommon::id` is also used to correlate source events | `domain::SecurityID` (`uint64_t`), currently copied into the Spark key |
-| Shared-memory hot book | none | `HotEntry::key` or `HotDepthEntry::key` |
-| Shared-memory cold metadata | `FixedSecurity::numeric_id` | `FixedSecurity::key` |
-| CME runtime lookup | `CMESecurityIndex` key | `SecurityData::handle.key()` |
-| General runtime lookup | incoming/canonical `domain::SecurityID` | `GeneralSecurityIndex` key and `handle.key()` (currently the same value) |
-
-The generalized model declares `domain::SecurityID` as 64-bit, but the legacy
-shared-memory `security_key` remains 32-bit. `_copy_security_common()` assigns a
-64-bit value to both `numeric_id` and the 32-bit `key`. This is safe only while
-allocated IDs fit in 32 bits; unlike the legacy lookup path, this assignment has
-no explicit checked conversion.
-
-## Which parts use exchange IDs, descriptors, or Spark security IDs?
-
-The three identifier classes serve different jobs:
-
- **Exchange/external ID:** routes data inside a venue or vendor feed adapter.
- **Descriptor/natural key:** recognizes a definition logically at the
-  persistence, discovery, or human-facing boundary.
- **Spark security ID/key:** joins the instrument to books, orders, fills,
-  positions, and services after publication.
-
-The core downstream system does not repeatedly identify a security from its
-description. The description is primarily used to obtain a Spark key; after
-that boundary, most joins use the numeric Spark key.
-
-### Component-level usage matrix
-
-| Component or data path | Exchange/external ID | Descriptor or name | Spark security ID/key |
-|---|---|---|---|
-| CME MDP3 definition decoder | Reads `securityId()` and stores it in `FixedSecurity::numeric_id` | Copies definition symbol/tag 55 into `security_desc` | Leaves `FixedSecurity::key` at `0` initially |
-| `CMESecurityIndex` | Primary map key; CME ID resolves to a handle | Not used for update routing | Returns `handle.key()` when the Spark key has been assigned |
-| MDP3 books, trades, status, statistics, and RFQs | Incoming CME ID selects the handle through `CMESecurityIndex` | Not used to locate each update | The selected handle writes keyed shared-memory/trade data after publication |
-| MDP3 spread definitions | Each leg initially contains `legSecurityId()` as `exchange_key` | Parent `security_desc` identifies the spread's DB row | Each leg's Spark key and then the parent Spark key must be resolved before publication |
-| Legacy ICE OnixS | Uses ICE `marketId` as `numeric_id` and index key | ICE security description becomes the logical lookup name | Uses the same recorder-assigned Spark key pattern as MDP3 |
-| `SecurityIDRecorder` | Does not allocate from the external ID | Uses `(venue, security type, securities::descriptor())` to find/create a row | Treats the SQLite rowid as the resulting Spark key |
-| Native generalized adapters | Use exchange strings/numeric IDs to parse definitions and correlate updates | Usually pass a description or exchange instrument name to `IDGenerator` | Put the returned ID into `SecurityCommon::id` and later events |
-| Databento adapter | Uses `msg.hd.instrument_id` for feed correlation and its in-memory map | Uses the decimal instrument ID string—not the human description—as the `IDGenerator` name | Caches `instrument_id -> domain::SecurityID` and places that ID on books/trades |
-| Python bridge | Reads `exchange_security_id` from definitions, books, and trades | Uses that external-ID string as the `IDGenerator` name | Resolves it to `domain::SecurityID`; currently performs this lookup for every event |
-| `IDGenerator` | Does not interpret whether `name` came from an exchange ID | Uses exactly `(venue, type, caller-supplied name)` | Returns the SQLite rowid as a 64-bit ID |
-| `GeneralMarketDataListener` | Does not route on `exchange_sec_id` directly | Copies `sec.desc()` into fixed metadata; its disabled fallback allocator would use `sec.desc()` | Uses incoming `SecurityCommon::id`, maps events through `cc_sec_id_map`, and copies the value into both `key` and `numeric_id` |
-| `GeneralSecurityIndex` | No separate external-ID concept in the current use-given path | Not used | Maps the generalized ID/Spark key to `MDProducerHandle` |
-| `MDProducer` / shared memory | Retains `numeric_id`; in legacy feeds this is the exchange ID, but in the generalized path it is currently the Spark ID | Stores `security_desc` in the cold definition | Uses the key in hot/cold entries; non-zero key is the visibility boundary |
-| `MDConsumer` | Not normally used to find live books | Can enumerate/filter converted security definitions | Finds handles and book data by `security_key` |
-| `SecurityCache` / `securities.sqlite` | Preserves venue-specific exchange data inside the serialized security blob | Maintains descriptor/name lookup indexes and supports venue/type/name queries | Primary persisted definition key is `api::Security.id()` |
-| MBO processor and MBO service | May retain exchange **order** IDs, which are separate from security exchange IDs | Not used to find the instrument | Indexes snapshots and requests by `SecurityKey`; MBO protobuf `security_id` means Spark key |
-| Order manager and algorithms | Execution gateways eventually use venue-specific fields from the resolved security to encode orders | Descriptions appear in logs and errors, not as the primary join | Order definitions, subscriptions, book events, native orders, spread legs, and fills use `security_key` / `Security.id()` |
-| Position, PNL, and risk services | Not used as their position join | May resolve metadata for display/reporting | Positions, fills, overrides, and PNL handles are keyed by Spark security ID |
-| Relay and market-data recordings | Serialized security definitions may preserve venue exchange IDs | Preserve full descriptors in recorded definitions | Books, updates, trades, and replay correlation preserve the recorded Spark key |
-| Synthetic security service | No venue exchange ID; synthetics use `VENUE_BTS` | Synthetic name is the recorder's logical descriptor | Recorder assigns the SQLite rowid and synthetic metadata is keyed by it |
-
-### Exchange/external IDs: where they stop
-
-In MDP3 the separation is explicit:
-
-```text
-CME SecurityID
-    -> FixedSecurity.numeric_id
-    -> CMESecurityIndex lookup
-    -> MDProducerHandle
-    -> Spark security_key for downstream publication
-```
-
-The external CME ID continues to route feed messages but does not become the
-order/position key. This permits the same downstream Spark key to survive a
-restart as long as the logical descriptor mapping remains in
-`key_ids.sqlite`, even if the feed must rediscover the CME routing ID.
-
-The generalized path collapses more of these roles:
-
-```text
-exchange/vendor identity
-    -> adapter calls IDGenerator
-    -> domain::SecurityID
-    -> FixedSecurity.key and FixedSecurity.numeric_id
-    -> GeneralSecurityIndex and downstream Spark key
-```
-
-`SecurityCommon::exchange_sec_id` may still contain the original textual
-external identifier, but `GeneralMarketDataListener` does not use it to route
-events and does not put it in `numeric_id`. The adapter must translate later
-events to `domain::SecurityID` before invoking the listener.
-
-### Descriptor/name users
-
-Descriptors are used in three main places:
-
-1. **Key allocation:** `SecurityIDRecorder` uses the legacy venue-specific
-   descriptor, while `IDGenerator` uses its caller-provided `name`.
-2. **Definition lookup and discovery:** `SecurityCache` supports
-   venue/type/name lookup; symbol filters and administrative tools use security
-   metadata to select or display instruments.
-3. **Diagnostics:** logs include symbols and descriptions so humans can
-   understand a numeric key.
-
-Descriptions generally do not drive the high-rate book, trade, order, fill, or
-position paths. Those paths use numeric IDs after definition resolution.
-
-It is important that “descriptor” does not mean one universal canonical field:
-
- Legacy CME uses Globex `security_desc` from tag 55.
- Many generalized adapters use `sec.desc()` or an exchange instrument name.
- Databento uses its numeric instrument ID converted to a string.
- Python uses `exchange_security_id`.
-
-Therefore, two adapters may describe the same economic contract but request
-different logical rows and receive different Spark IDs.
-
-### Spark security-ID users
-
-Once a security is published, its Spark key is the dominant system identifier:
-
-```mermaid
-flowchart LR
-    KEY["Spark security key"] --> SHM["Hot/cold shared memory"]
-    KEY --> MDC["MDConsumer and book subscriptions"]
-    KEY --> MBO["MBO snapshots and queries"]
-    KEY --> OMS["Orders, algorithms, and spread legs"]
-    KEY --> FILLS["Fills and execution records"]
-    KEY --> POS["Positions, PNL, and risk"]
-    KEY --> API["Services and client APIs"]
-    KEY --> REC["Relay and market-data recordings"]
-    KEY --> SECDB["Serialized security definitions"]
-```
-
-Fields named `security_id`, `security_key`, or top-level `Security.id()` in
-these downstream areas almost always mean the Spark key. They should not be
-compared directly with CME `SecurityID`, Databento `instrument_id`, or another
-venue/vendor identifier without going through the relevant adapter/index
-mapping.
-
-## Persistence and allocation
-
-### The authoritative key mapping: `key_ids.sqlite`
-
-Both allocators use `SqliteStore("key_ids")`. With the normal configuration the
-file is:
-
-```text
-<SystemConfig.data_path>/databases/key_ids/key_ids.sqlite
-```
-
-The database contains one table and two indexes:
-
-```sql
-CREATE TABLE store (ns TEXT, key TEXT, value TEXT);
-CREATE UNIQUE INDEX key_index ON store(ns, key);
-CREATE INDEX ns_index ON store(ns);
-```
-
-The SQLite `rowid` is the generated Spark key. `ns` is normally
-`<VENUE>.<SECURITY_TYPE>` (for example `GLBX.FUTURE`), and `key` is the security
-descriptor chosen by the caller. `value` is normally empty. Therefore ID
-stability depends on all three of these remaining stable:
-
- the configured `data_path` and preservation of this database;
- the venue/type namespace;
- the descriptor supplied by the feed adapter.
-
-The two allocator implementations share the file and convention:
-
- `SecurityIDRecorder` (legacy): derives the namespace from legacy API enums and
-  uses `securities::descriptor()`. For CME this is the Globex
-  `security_desc`, populated from the definition's symbol/tag 55.
- `IDGenerator` (newer): derives the namespace from new domain enums and uses
-  the caller's `name`. Most adapters pass `sec.desc()` or an exchange instrument
-  identifier; Databento deliberately passes the decimal instrument ID, and the
-  Python bridge uses the exchange security ID.
-
-### Logical-row examples
-
-The following names are illustrative. Production uses the exact string emitted
-by the selected feed/adapter, including its case, spacing, and weekly-series
-notation.
-
-#### Legacy `SecurityIDRecorder`
-
-For CME, `set_security_common()` copies the MDP3 definition's symbol/tag 55 into
-Globex `security_desc`. After converting the fixed security to
-`api::Security`, `securities::descriptor()` returns that same
-`glbx.security_desc()` string.
-
-| Instrument | Legacy enums | Example descriptor from `security_desc` | Row searched/inserted in `store` |
-|---|---|---|---|
-| Future | `VENUE_GLBX`, `SECURITYTYPE_FUTURE` | `ESZ6` | `ns='GLBX.FUTURE', key='ESZ6'` |
-| Standard option | `VENUE_GLBX`, `SECURITYTYPE_OPTION` | `ESZ6 C6500` | `ns='GLBX.OPTION', key='ESZ6 C6500'` |
-| Weekly option | `VENUE_GLBX`, `SECURITYTYPE_OPTION` | `ESZ6-W1 C6500` | `ns='GLBX.OPTION', key='ESZ6-W1 C6500'` |
-| Spot from a legacy-compatible venue path | `VENUE_COINBASE`, `SECURITYTYPE_SPOT` | `BTC-USD` | `ns='COINBASE.SPOT', key='BTC-USD'` |
-
-A weekly option does not get a special namespace. Standard and weekly options
-are both `SECURITYTYPE_OPTION`, so both live in `GLBX.OPTION`; the exact
-`security_desc` distinguishes the weekly series. For example, if the database
-assigned rowids `42001` through `42004` to the rows above, those integers—not
-the descriptor strings—would be the Spark security keys.
-
-Conceptually, legacy allocation is:
-
-```text
-future:        lookup_or_insert("GLBX.FUTURE",  "ESZ6")
-option:        lookup_or_insert("GLBX.OPTION",  "ESZ6 C6500")
-weekly option: lookup_or_insert("GLBX.OPTION",  "ESZ6-W1 C6500")
-spot:          lookup_or_insert("COINBASE.SPOT", "BTC-USD")
-```
-
-#### Newer `IDGenerator`
-
-The namespace result is similar, but the third argument is chosen by the
-adapter. Examples using a description-oriented adapter are:
-
-```cpp
-get_or_add(VENUE_GLBX, SECURITY_TYPE_FUTURE, "ESZ6");
-// store: ns="GLBX.FUTURE", key="ESZ6"
-
-get_or_add(VENUE_GLBX, SECURITY_TYPE_OPTION, "ESZ6 C6500");
-// store: ns="GLBX.OPTION", key="ESZ6 C6500"
-
-get_or_add(VENUE_GLBX, SECURITY_TYPE_OPTION, "ESZ6-W1 C6500");
-// store: ns="GLBX.OPTION", key="ESZ6-W1 C6500"
-
-get_or_add(VENUE_COINBASE, SECURITY_TYPE_SPOT, "BTC-USD");
-// store: ns="COINBASE.SPOT", key="BTC-USD"
-```
-
-Databento intentionally produces a different logical row even when the human
-description is `ESZ6`. If its instrument ID were `12345678`, it would call the
-equivalent of:
-
-```cpp
-get_or_add(VENUE_GLBX, SECURITY_TYPE_FUTURE, "12345678");
-// store: ns="GLBX.FUTURE", key="12345678"
-```
-
-Likewise, the Python bridge uses `exchange_security_id`. A spot definition with
-`exchange_security_id="BTC-USD"` produces the `COINBASE.SPOT / BTC-USD` row,
-while a provider that sends `exchange_security_id="BTCUSD"` produces a
-different row and therefore a different Spark key.
-
-These examples show why the tuple is only logical when the adapter's naming
-contract is also known. `GLBX.FUTURE / ESZ6` and `GLBX.FUTURE / 12345678` may
-describe the same contract to a human but are distinct rows to `key_ids.sqlite`.
-
-Both enum-prefix removals currently produce the same namespace spelling (for
-example, `GLBX.OPTION`), so both mechanisms allocate from one global SQLite
-rowid space. Live rows cannot share a rowid. The table does not declare
-`AUTOINCREMENT`, however, so deleting rows—especially the highest row—can allow
-SQLite to reuse a number later. Security-key rows should therefore be treated
-as append-only operational data.
-
-`SqliteStore` uses WAL mode and `PRAGMA synchronous = 0`. This favors startup
-and feed latency over maximum durability against a host/power failure. The
-unique `(ns, key)` index prevents two different rows for the same logical
-security.
-
-### Other places the key is stored
-
-| Location | Purpose | Authoritative for allocation? |
-|---|---|---|
-| Hot and cold shared-memory segments | Live publication and fast consumer lookup | No; rebuilt at process startup |
-| `CMESecurityIndex` / `GeneralSecurityIndex` and adapter maps | In-process routing from an incoming ID to a producer handle | No; in-memory only |
-| `<data_path>/databases/md/securities.sqlite` | Serialized legacy `api::Security` definitions keyed by Spark key; used by security cache and MDP3 Sunday preload | No; it stores metadata after a key exists |
-| Relay/market-data recordings | Preserve the key embedded in recorded securities, books, and trades for deterministic replay | No; replay normally reuses the recorded value |
-| Orders, fills, positions, APIs | Reference a security by the published Spark key | No |
-
-The `SecurityIDRecorder::work_db()` comment says a published security is also
-recorded in the security database, but that function does **not** write
-`securities.sqlite` in the current code. Full security definitions are persisted
-separately by `SecurityCache::flush_to_disk()` through
-`db::insert_or_replace()`.
-
-## CME MDP3 / OnixS pipeline in detail
-
-### 1. Construction and thread setup
-
-`MDP3Main::PImpl` owns one `CMESecurityIndex`, one `SecurityIDRecorder`, and one
-`MDProducer`. It constructs the recorder with:
-
- a lookup callback that maps `ExchangeKey` through the CME index to the
-  handle's current Spark key; and
- `Dispatcher::current()`, which drives a 200 ms recorder timer.
-
-In the current `MarketDataGateway` route, `OnixsGlbxSubscription` creates a
-dedicated `dispatcher_thread`, constructs and starts `MDP3Main` on that thread,
-then calls that thread's dispatcher `run()`. The older `md run onixs` command
-uses its command/dispatcher thread similarly.
-
-The OnixS feed engine has its own configured thread pool. Instrument and market
-data callbacks therefore originate on OnixS feed-engine threads, while recorder
-database work and final key assignment execute on the MDP3 dispatcher thread.
-
-| MDP3 stage | Executing thread | DB call? |
-|---|---|---|
-| Decode definition and set CME `numeric_id` | OnixS feed-engine callback thread | No |
-| Allocate hot/cold entry and queue handle | Same OnixS callback thread | No |
-| Add CME-ID index entry | Same OnixS callback thread | No |
-| Resolve spread legs | MDP3 dispatcher thread, on 200 ms timer | No |
-| Select/insert Spark key | MDP3 dispatcher thread, on 200 ms timer | Yes |
-| `handle.set_key()` and public visibility | MDP3 dispatcher thread, in DB callback | No additional call |
-
-### 2. Definition callback: exchange ID is set, Spark key is not
-
-For futures, options, and spreads, `MDP3Listener::set_security_common()` does:
-
-```cpp
-fsec.numeric_id = def.securityId();
-```
-
-It also copies symbol/descriptor/venue and pricing fields. A newly constructed
-`FixedSecurity` already has `key == invalid_security_key` (`0`), and this helper
-does not change it.
-
-For a spread, every leg starts with:
-
-```cpp
-leg.exchange_key = ExchangeKey(definition_leg.legSecurityId());
-leg.key = invalid_security_key;
-```
-
-Thus both the parent and legs initially carry exchange-routing identity, but no
-Spark identity.
-
-### 3. Shared-memory allocation and exchange indexing
-
-`MDP3Listener::add_security()` performs these operations in order:
-
-1. `_producer.add_security(security)` allocates a hot entry and a variable-sized
-   cold entry and copies the security into the cold segment.
-2. Because the key is `0`, `MDProducer` queues the handle through
-   `SecurityIDRecorder::ensure_key()`.
-3. `_index.add_security(security.numeric_id, handle)` immediately creates the
-   CME-ID-to-handle mapping.
-4. The initial exchange status is written through the handle.
-
-This ordering means incoming books can already be routed by CME ID while the
-Spark key is pending. Shared-memory consumers cannot discover the security yet.
-Also, `MDProducerHandle::add_trade()` only appends to the public trade queue
-when `key() != 0`, so a trade received in this short window updates the cold
-last-trade state but is not added to the keyed trade log.
-
-### 4. Recorder tick: spreads, handles, then database
-
-Every 200 ms the recorder calls, in this exact order:
-
-1. `work_spreads()` tries to fill previously unresolved spread leg keys by
-   asking `CMESecurityIndex` for each leg exchange ID.
-2. `work_handles()` drains new handles. Outrights are converted to an API
-   security and queued for DB lookup immediately. A spread without all leg keys
-   is retained in `pending_handle` and its leg pointers are registered in
-   `unresolved_legs`.
-3. `work_db()` resolves queued `(venue, type, descriptor)` requests.
-
-Because spread work precedes new-handle work, a newly seen unresolved spread
-normally waits until at least the next timer tick to resolve legs. It waits
-longer if any outright leg has not yet received its Spark key. A spread's own
-key is not requested until every leg key is non-zero.
-
-### 5. Lookup or generation
-
-`work_db()` first queries `(ns, key)`:
-
- Existing row: use its `rowid` as the key and invoke the callback.
- Missing row: batch it into `insert_many_resolve_ids()`. SQLite assigns a new
-  rowid inside a transaction, the row object receives that ID, and the callback
-  runs after the transaction completes.
-
-New inserts are throttled to roughly 200 per timer pass (the current `> 200`
-check can admit 201) to avoid delaying heartbeats during startup. The queues are
-TBB concurrent queues, but all SQLite access is serialized onto the recorder's
-dispatcher thread. `check_access()` asserts this single-thread rule after the
-first work pass records the dispatcher thread ID.
-
-### 6. Final assignment and visibility
-
-The queued callback captures a copy of `MDProducerHandle` and calls
-`handle.set_key(id)` on the dispatcher thread. `set_key()` writes hot, then cold,
-then increments `security_count`. From this point:
-
- shared-memory scans report the security;
- `CMESecurityIndex::get_key(CME_ID)` returns the Spark key;
- trades and RFQs can be emitted with a non-zero key;
- resolved spreads can copy this key into their leg structures.
-
-### 7. Sunday preload is a fast path
-
-For configured symbols on Sunday, `MDP3Main::prepare_listener()` loads stored
-definitions from `securities.sqlite`. It converts them with
-`set_security_key=true`, so both the security key and spread leg keys come from
-the serialized API security. `MDProducer::add_security()` calls `set_key()`
-immediately, and no recorder lookup is required for that preloaded handle. The
-CME exchange ID is still restored into `numeric_id`, allowing the normal CME
-index to be built.
-
-## Generalized/newer pipeline in detail
-
-### 1. Topology and ownership
-
-`Run::run()` starts a detached thread named `MarketDataGateway`. On that thread,
-`run_md_gwy()` obtains the process-wide `IDGenerator`, constructs
-`MarketDataGateway`, and starts the configured providers. For each `(venue,
-source)` returned by a provider, the gateway creates an `MdSink` containing:
-
- a venue-local `GeneralSecurityIndex`;
- a default `MDProducer` (not wired to a `SecurityIDRecorder`); and
- a `GeneralMarketDataListener` connecting the source to that producer/index.
-
-The source decides its callback thread. Some sources call the listener while
-starting; others own network or replay threads. The generalized listener calls
-the producer inline on that source thread. The process-wide `IDGenerator`
-serializes its own calls with a mutex, but the listener's transient
-`cc_sec_id_map` is an ordinary `unordered_map`, so each source/listener pair is
-expected to serialize security/event callbacks.
-
-| Generalized stage | Executing thread | DB call? |
-|---|---|---|
-| Build/parse domain definition | Source/adaptor thread | No |
-| `IDGenerator::get_or_add()` | Same source/adaptor thread | Yes, synchronously |
-| `GeneralMarketDataListener::on_securities()` | Same source callback thread | No in current use-given mode |
-| Copy ID to `FixedSecurity::key` and `numeric_id` | Same source callback thread | No |
-| `MDProducer::add_security()` / `set_key()` | Same source callback thread | No additional call |
-| Add `GeneralSecurityIndex` entry | Same source callback thread | No |
-
-There are two important compatibility exceptions inside the provider framework:
-
- `OnixsGlbxSubscription::start()` ignores the supplied generalized listener
-  and starts `MDP3Main`; CME/OnixS therefore still follows the asynchronous
-  legacy flow documented above.
- `EmumbaDeribitSubscription::start()` also ignores that listener and uses
-  `EmMDListener`, which allocates via `IDGenerator` and writes through its own
-  producer/index. Its assignment is still synchronous and pre-populated, so it
-  resembles the newer ID flow even though it does not pass through
-  `GeneralMarketDataListener`.
-
-### 2. How a new ID is constructed
-
-For a normal live generalized adapter, ID creation happens **in the adapter,
-before** `GeneralMarketDataListener::on_securities()`:
-
-```text
-logical identity = (domain venue, domain security type, adapter-chosen name)
-Spark ID         = SQLite rowid for that identity in key_ids.sqlite
-```
-
-`IDGenerator::get_or_add(venue, type, name)` formats a namespace by stripping
-the enum prefixes:
-
-```text
-VENUE_TAIFEX + SECURITY_TYPE_FUTURE -> TAIFEX.FUTURE
-```
-
-It then calls `retrieve_one(ns, name)`. If the row exists, it returns that
-row's `rowid`. If absent, it inserts `(ns, name, "")`, and SQLite assigns the
-next rowid. That integer is wrapped in `domain::SecurityID` and placed in
-`SecurityCommon::id`.
-
-The third identity component is adapter-specific, and this matters when trying
-to reproduce a mapping:
-
-| Source/adaptor family | Typical `name` sent to `IDGenerator` |
-|---|---|
-| Binance, Coinbase, Deribit, OKX and similar native/CCAPI paths | Usually `sec.desc()` / exchange instrument name |
-| Taifex | product/instrument ID string |
-| Databento | `std::to_string(msg.hd.instrument_id)`, not the human-readable description |
-| Python bridge | `exchange_security_id` (and it asserts Python supplied ID is zero for definitions) |
-| Emumba Deribit | extracted Emumba security descriptor |
-| Replay | no new allocation for a recorded definition; it reuses the recorded `SecurityCommon::id` |
-
-So “security name” alone is not a universal logical key. Reproduction requires
-the exact venue enum, exact security-type enum, and the exact adapter-specific
-name used at insertion time.
-
-### 3. What `GeneralMarketDataListener` does with that ID
-
-`on_securities()` first calls `_find_sec(sec, true)`. Its current, compile-time
-behavior is controlled by:
-
-```cpp
-const bool use_given_sec_key = true;
-```
-
-Consequently, for a newly seen incoming `domain::SecurityID` it does **not**
-call the DB. It copies `security_common.id.value()` into its transient
-`cc_sec_id_map`. `_add_future()`, `_add_option()`, `_add_spread()`, or
-`_add_spot()` then calls `_copy_security_common()`, which sets:
-
-```cpp
-to.key = incoming_id;
-to.numeric_id = incoming_id;
-```
-
-This collapses the generalized source/correlation ID and Spark shared-memory
-key into the same number. The source's text `exchange_sec_id` remains on the
-domain security but is not copied into `FixedSecurity::numeric_id` by this
-path.
-
-`_commit_security()` then:
-
-1. calls `MDProducer::add_security()` with an already non-zero key;
-2. causes `MDProducerHandle::set_key()` to run immediately during that call;
-3. inserts the handle in `GeneralSecurityIndex` under `numeric_id` (the same
-   number); and
-4. returns with the security already visible in shared memory.
-
-Because the sink's producer has no recorder, supplying `id == 0` would allocate
-the shared-memory entry but never assign or publish its key. Generalized live
-sources must therefore provide a valid non-zero ID before `on_securities()`.
-
-The listener contains an alternative branch for `use_given_sec_key == false`.
-That branch would call `IDGenerator::get_or_add(me->venue, sec.type(),
-sec.desc())` itself. It is currently disabled, and `_generate_security_key()` is
-also effectively unused. Turning the flag off is not a mechanical change: an
-adapter such as Databento allocates using numeric instrument ID while the
-listener branch would use `sec.desc()`, potentially creating a second key for
-the same instrument.
-
-There is also a spread failure edge case. `_find_sec(sec, true)` records the
-parent ID in `cc_sec_id_map` before `_add_spread()` resolves its legs. If any leg
-ID is absent, `_add_spread()` logs and returns without committing the spread. A
-later repeat of the parent definition is then classified as a duplicate and
-ignored, so definition ordering is a hard requirement in the current code.
-
-### 4. How later books, trades, and statistics find the security
-
-Every later domain event carries a `domain::SecurityID`:
-
- `Book::security_id()`;
- `TradeRecord::sec_id`; or
- `SecurityMarketDataStatistics::security_id`.
-
-The listener first uses `cc_sec_id_map` to translate that event ID to the value
-stored in `GeneralSecurityIndex`, then obtains the `MDProducerHandle`. With
-`use_given_sec_key == true`, this mapping is numerically identity-to-identity,
-but it still serves as the admission check that the definition was seen.
-
-Most high-throughput adapters avoid SQLite on market-data events:
-
- Databento allocates on the definition and caches
-  `instrument_id -> domain::SecurityID` in `sec_id_map` for books/trades.
- Taifex keeps the resolved ID in its security-details mapper.
- Other native subscriptions maintain comparable descriptor/ID maps.
-
-The Python bridge is a notable exception: `to_bts_security_()`,
-`to_bts_trade_()`, and `to_book_()` all call `get_sec_id_()`, which calls
-`IDGenerator::get_id(..., add_if_new=true)`. As written, that performs at least
-one SQLite `SELECT` for each converted Python definition, trade, or book. It
-returns the existing ID after the first insert, but it is still a DB call and
-takes the global `IDGenerator` mutex on every event.
-
-### 5. Persistence timing and latency
-
-The newer allocator is synchronous:
-
- Existing security: mutex acquisition plus one SQLite `SELECT` on the caller's
-  thread.
- New security: mutex acquisition, one `SELECT`, then one SQLite `INSERT`
-  (SQLite autocommit), also on the caller's thread.
- Listener publication: no further DB call under the current
-  `use_given_sec_key` setting.
-
-The ID therefore exists in `key_ids.sqlite` before the adapter sends the
-definition to the listener. There is no intentional 200 ms publication delay,
-but the source callback/startup path directly pays DB and mutex latency. Bulk
-definition discovery performs one lookup and possibly one insert per security;
-`IDGenerator` does not batch those operations.
-
-WAL mode helps concurrency, while `synchronous=0` reduces fsync cost. It does
-not eliminate SQL parsing/stepping, mutex contention, page-cache misses, or
-occasional file-system work. The impact is usually a startup/definition cost
-when adapters cache the result, but it becomes hot-path latency for code such as
-the current Python bridge that resolves every event through the DB.
-
-`GeneralMarketDataListener` itself does not persist the full contract definition
-to `securities.sqlite`; that remains the separate security-cache/metadata
-persistence path described earlier.
-
-## Comparison: MDP3 recorder vs generalized allocator
-
-| Property | MDP3 / `SecurityIDRecorder` | Generalized / `IDGenerator` |
-|---|---|---|
-| Logical input | venue + type + legacy `security_desc` | venue + type + adapter-chosen name |
-| Numeric output | SQLite rowid, checked/read as 32-bit `security_key` | SQLite rowid returned as 64-bit `domain::SecurityID`, then narrowed into 32-bit shared-memory key |
-| Allocation point | After definition is copied to shared memory | Normally inside adapter before listener sees definition |
-| DB execution | Asynchronous on dispatcher timer | Synchronous on caller/source thread |
-| Existing ID cost | One deferred `SELECT` | One immediate `SELECT` per call |
-| New ID cost | Deferred, batched transaction (about 200/pass) | Immediate `SELECT` + individual autocommit `INSERT` |
-| Time until public | Usually 0–200+ ms; spreads may take extra ticks | Immediate after synchronous lookup/insert completes |
-| Feed callback blocking | Queue push only for ID work | Yes, if the adapter invokes `IDGenerator` there |
-| Spread legs | Parent waits asynchronously until all leg keys resolve by exchange ID | Definition processing requires every leg's incoming ID already exist in `cc_sec_id_map`; otherwise the spread is aborted |
-| Runtime ID relationship | Exchange ID and Spark key remain distinct | Incoming/canonical ID, `numeric_id`, index ID, and Spark key are currently the same number |
-| Persistence database | `key_ids.sqlite` | The same `key_ids.sqlite` |
-| Batching | Yes for new rows | No |
-| Failure behavior | Security has an internal handle with key 0 while normal queued work is pending; DB work does not block the feed callback | DB errors/zero results occur in the synchronous source path; a zero ID can leave an unpublishable entry, with no pending-key state machine |
-
-Neither algorithm generates a UUID or a content hash. Both ultimately use an
-opaque, database-assigned SQLite rowid. It is normally increasing and looks like
-a sequence, but this schema does not request SQLite `AUTOINCREMENT`. The tuple
-used to *look up* the row is logical; the resulting number is not derivable from
-that tuple.
-
-## Can another system reconstruct the same keys?
-
-Not from `(venue, type, name)` alone. Another system can reconstruct the
-**logical lookup tuple**, but it cannot calculate the numeric Spark key because
-the key depends on the historical insertion order of every row in
-`key_ids.sqlite`.
-
-For example, two empty systems can insert the exact same `GLBX.FUTURE / ESZ6`
-row and receive different IDs if other securities were inserted before it on
-one system. They are sequential opaque IDs, not deterministic hashes and not
-UUIDs.
-
-Ways to preserve cross-system identity are:
-
-1. Copy/replicate `key_ids.sqlite` (including rowids) and keep descriptor rules
-   identical. This preserves existing numeric keys but requires coordinated
-   allocation for new ones.
-2. Export an explicit mapping of `(namespace, adapter key) -> Spark key`, then
-   import rows with their original rowids before either system allocates new
-   securities.
-3. Treat a stable external identity (venue + type + exchange instrument ID, or
-   another canonical instrument identifier) as the cross-system key and carry a
-   translation table to each system's local Spark key.
-4. Introduce a deterministic ID scheme only as a versioned migration. A hash can
-   be computed independently, but collision handling, descriptor
-   canonicalization, aliases/renames, the existing 32-bit ABI, and compatibility
-   with orders/recordings/databases all need explicit design.
-
-Copying only `securities.sqlite` is insufficient as an allocator strategy. It
-contains security blobs keyed by already-assigned IDs, but `key_ids.sqlite` is
-the mapping used to find or allocate those IDs. Conversely, copying only
-`key_ids.sqlite` preserves the numbers but not all contract metadata.
-
-## Other assignment paths in `sparkd`
-
-The two main pipelines reduce to four ways a producer handle can acquire a key:
-
-1. **Already keyed input.** `MDProducer::add_security()` sees a non-zero
-   `FixedSecurity::key` and calls `set_key()` immediately. Generalized feeds,
-   Sunday preload, relay playback, and other replay paths use this mechanism.
-2. **Recorder-backed live input.** The input key is zero and the producer owns a
-   `SecurityIDRecorder`; `ensure_key()` queues asynchronous assignment. CME
-   MDP3 and legacy OnixS ICE use this mechanism. ICE uses `marketId` as
-   `numeric_id` and otherwise follows the same recorder/index design.
-3. **Service assignment.** `SyntheticSecurityService` calls
-   `SecurityIDRecorder::assign_key()` directly on a background dispatcher. The
-   callback receives a copied `api::Security` with its top-level `id` set, then
-   publishes it to synthetic subscribers. It uses the same `key_ids.sqlite`
-   rowid allocator.
-4. **Unkeyed input with no recorder.** The entry is allocated with key zero and
-   never becomes public. This is not a valid production assignment path, but it
-   is the failure mode if a generalized source omits its ID.
-
-Relay and replay deserve care when reasoning about persistence:
-
- The generalized `MDReplayer` forwards the recorded domain security ID and
-  emits later books/statistics with the recorded `sec_key`, so the listener's
-  current use-given mode preserves the recording's numeric identity.
- The legacy relay producer converts a recorded `api::Security` with
-  `set_security_key=true`, so its shared-memory publication also preserves the
-  embedded key.
- The legacy relay recorder additionally calls `bulk_insert(..., "REPLAY: ")`
-  for logical mappings. Those rows use a `REPLAY: ` namespace prefix; this is a
-  separate mapping population step, not a deterministic derivation of the key.
-
-## Operational implications
-
- Back up `key_ids.sqlite` and `securities.sqlite` together if numeric ID and
-  definition continuity matter.
- Do not delete/rebuild `key_ids.sqlite` on one host and assume IDs will match
-  another host, even when all instruments are identical.
- Before moving a feed between adapters, compare the exact `name` each adapter
-  supplies to `IDGenerator`. Matching venue/type is insufficient.
- Cache generated IDs in the source after definition processing. Avoid calling
-  `IDGenerator` from book/trade hot paths; the Python bridge currently violates
-  this guideline.
- Keep generated rowids below the 32-bit shared-memory ceiling until the
-  `security_key` ABI is widened or explicit bounds checking is added to the
-  generalized path.
- Ensure spread legs are announced before generalized spread parents.
- Treat `synchronous=0` as a durability decision. A copied DB should be taken
-  with SQLite-aware backup/checkpoint handling rather than by casually copying
-  active WAL files.
-
-Useful inspection queries (run against the configured DB path) are:
-
-```sql
-SELECT rowid AS spark_key, ns, key
-FROM store
-ORDER BY rowid;
-
-SELECT rowid AS spark_key, ns, key
-FROM store
-WHERE ns = 'GLBX.FUTURE' AND key = '<exact-adapter-key>';
-```
-
-## Source map
-
- [`SecurityIDRecorder.cpp`](../src/lib_spark/spark/md/SecurityIDRecorder.cpp):
-  legacy queues, 200 ms work ordering, logical row construction, DB callbacks,
-  and spread-leg resolution.
- [`IDGenerator.cpp`](../src/lib_spark/spark/persistence/IDGenerator.cpp):
-  synchronous generalized lookup/allocation and process-wide mutex.
- [`SqliteStore.cpp`](../src/lib_spark/spark/persistence/SqliteStore.cpp): DB
-  location, schema, WAL/synchronous pragmas, individual inserts, and batch
-  inserts.
- [`MDProducer.cpp`](../src/lib_spark/spark/md/MDProducer.cpp) and
-  [`MDProducerHandle.cpp`](../src/lib_spark/spark/md/MDProducerHandle.cpp):
-  shared-memory allocation, recorder handoff, and ordered publication.
- [`FixedSecurity.h`](../src/lib_spark/spark/md/Shm/FixedSecurity.h) and
-  [`MDStructure.h`](../src/lib_spark/spark/md/Shm/MDStructure.h): identifier
-  widths and hot/cold storage fields.
- [`MDP3Main.cpp`](../src/app_sparkd/sparkd/md/platforms/mdp3_onixs/MDP3Main.cpp)
-  and
-  [`MDP3Listener.h`](../src/app_sparkd/sparkd/md/platforms/mdp3_onixs/MDP3Listener.h):
-  MDP3 construction, definition callbacks, CME ID extraction, and spread legs.
- [`MDP3Listener.cpp`](../src/app_sparkd/sparkd/md/platforms/mdp3_onixs/MDP3Listener.cpp):
-  producer/index insertion order.
- [`OnixsGlbxSubscription.cpp`](../src/app_sparkd/sparkd/md/glbx/OnixsGlbxSubscription.cpp):
-  current dedicated MDP3 dispatcher-thread ownership.
- [`MarketDataGateway.cpp`](../src/app_sparkd/sparkd/md/MarketDataGateway.cpp)
-  and
-  [`GeneralMarketDataListener.cpp`](../src/lib_spark/spark/md/GeneralMarketDataListener.cpp):
-  generalized source/sink topology, incoming-ID mapping, fixed-security
-  conversion, and publication.
- [`DatabentoDataHandler.cpp`](../src/app_sparkd/sparkd/md/databento/DatabentoDataHandler.cpp),
-  [`TaifexDataProcessors.h`](../src/app_sparkd/sparkd/md/taifex/TaifexDataProcessors.h),
-  and
-  [`PyMarketDataSubscription.cpp`](../src/app_sparkd/sparkd/md/PyMarketDataSubscription.cpp):
-  representative adapter-side allocation and caching behavior.
- [`SecurityDB.cpp`](../src/lib_spark/spark/md/SecurityDB.cpp) and
-  [`SecurityCache.cpp`](../src/lib_spark/spark/md/SecurityCache.cpp): separate
-  persistence of full security definitions.
- [`SecurityIndex.h`](../src/lib_spark/spark/md/SecurityIndex.h),
-  [`MBOServiceServer.cpp`](../src/lib_spark/spark/md/MBOServiceServer.cpp), and
-  [`MDConsumer.cpp`](../src/lib_spark/spark/md/MDConsumer.cpp): exchange-index
-  translation followed by Spark-keyed market-data consumption and MBO access.
- [`OrderFactory.cpp`](../src/lib_spark/spark/orderman/order_factory/OrderFactory.cpp),
-  [`FillStore.cpp`](../src/lib_spark/spark/orderman/actors/FillStore.cpp), and
-  [`PositionMap.cpp`](../src/app_sparkd/sparkd/position/PositionMap.cpp):
-  representative downstream use of Spark security keys.
- [`MDReplayer.cpp`](../src/app_sparkd/sparkd/md/recording/MDReplayer.cpp) and
-  [`RelayClient.cpp`](../src/lib_spark/spark/md/relay/RelayClient.cpp): recorded
-  ID reuse.
@@ -1,38 +0,0 @@
-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
@@ -1,44 +0,0 @@
-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
-RUN apt-get update && apt-get install -y tzdata
-
-# GCC
-ARG gcc_major=13
-RUN add-apt-repository ppa:ubuntu-toolchain-r/test \
-  && apt-get update \
-  && apt-get install -y g++-$gcc_major
-
-RUN apt-get update \
-  && apt-get install -y dotnet8
-
-RUN apt-get update && apt-get install -y gdb
-RUN apt-get update && apt-get install -y fish
-RUN apt-get update && apt-get install -y vim
-RUN apt-get update && apt-get install -y less
-
-RUN locale-gen en_US.UTF-8
-
-ARG docker_user="bts"
-ARG docker_uid="1000"
-ARG docker_pass="bts"
-
-RUN \
-  groupadd -g "$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
@@ -1,150 +0,0 @@
-FROM ubuntu:22.04
-
-ARG DEBIAN_FRONTEND=noninteractive
-
-# Note installations that take a while (more than 10s)
-
-RUN apt-get update
-RUN apt-get install -y ca-certificates
-RUN apt-get install -y ccache
-RUN apt-get install -y curl
-RUN apt-get install -y fish
-RUN apt-get install -y gdb
-# git-all: ~250s
-RUN apt-get install -y git-all
-RUN apt-get install -y gnupg
-# liblttng-ust-dev: ~30s
-RUN apt-get install -y liblttng-ust-dev
-RUN apt-get install -y libssh2-1-dev
-RUN apt-get install -y locales
-RUN apt-get install -y ninja-build
-# openssh-server: ~40s
-RUN apt-get install -y openssh-server
-RUN apt-get install -y pkg-config
-RUN apt-get install -y software-properties-common
-RUN apt-get install -y sudo
-RUN apt-get install -y tzdata
-RUN apt-get install -y vim
-RUN apt-get install -y zip
-
-# Python: ~30s
-RUN apt-get install -y \
-   python3-pip \
-   python3-venv \
-   && python3 -m pip install --upgrade pip
-
-# GCC
-ARG gcc_major=13
-RUN \
-   add-apt-repository ppa:ubuntu-toolchain-r/test \
-   && apt-get update \
-   && apt-get install -y g++-$gcc_major
-
-# Clang
-ARG clang_major=17
-RUN \
-   curl -fsSL https://apt.llvm.org/llvm-snapshot.gpg.key 2> /dev/null \
-   | gpg --dearmor - \
-   | tee /usr/share/keyrings/llvm-snapshot.gpg > /dev/null \
-   && echo "deb [signed-by=/usr/share/keyrings/llvm-snapshot.gpg] http://apt.llvm.org/$(lsb_release -cs)/ llvm-toolchain-$(lsb_release -cs)-$clang_major main" \
-   | tee -a "/etc/apt/sources.list.d/llvm.list" \
-   && apt-get update \
-   && apt-get install -y \
-   clang-$clang_major \
-   clang-format-$clang_major \
-   clangd-$clang_major
-
-# 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/ $(lsb_release -cs) main" \
-    > /etc/apt/sources.list.d/kitware.list \
-  && apt-get update \
-  && apt-get install -y --no-install-recommends cmake \
-  && rm -rf /var/lib/apt/lists/*
-
-# Dotnet
-RUN apt-get update && apt-get install -y dotnet8
-
-# Node
-ARG node_major=18
-RUN mkdir -p /etc/apt/keyrings \
-   && curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
-   | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
-   && echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$node_major.x nodistro main" \
-   | tee /etc/apt/sources.list.d/nodesource.list \
-   && apt-get update \
-   && apt-get install -y nodejs
-
-# Emumba (deps)
-RUN apt-get update && apt-get -y install rapidjson-dev
-# 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; \
-   update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-$clang_major 100; \
-   update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-$clang_major 100; \
-   update-alternatives --install /usr/bin/clangd clangd /usr/bin/clangd-$clang_major 100; \
-   update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-$gcc_major 100; \
-   update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-$gcc_major 100
-
-# Add compiler symlinks for ccache 
-RUN \
-   ln -s /usr/bin/ccache /usr/local/bin/clang; \
-   ln -s /usr/bin/ccache /usr/local/bin/clang++; \
-   ln -s /usr/bin/ccache /usr/local/bin/clang-$clang_major; \
-   ln -s /usr/bin/ccache /usr/local/bin/clang++-$clang_major; \
-   ln -s /usr/bin/ccache /usr/local/bin/gcc; \
-   ln -s /usr/bin/ccache /usr/local/bin/g++
-
-RUN locale-gen en_US.UTF-8
-
-ARG docker_user="bts"
-ARG docker_uid="1000"
-ARG docker_pass="bts"
-
-RUN \
-   groupadd -g "$docker_uid" "$docker_user" \
-   && useradd \
-   -m \
-   -u "$docker_uid" \
-   -g "$docker_uid" \
-   -G sudo \
-   --password "$(openssl passwd -1 "$docker_pass")" \
-   "$docker_user"
@@ -1,11 +0,0 @@
-FROM ubuntu:24.04
-
-ARG DEBIAN_FRONTEND=noninteractive
-
-RUN apt-get update && apt-get install -y \
-  fish \
-  less \
-  vim
-
-USER bts
-WORKDIR /home/bts
@@ -1,65 +1,74 @@
-FROM ubuntu:latest
+FROM ubuntu:22.04

 ARG DEBIAN_FRONTEND=noninteractive
-ENV TZ=America/New_York

-# light deps (should be quick to download/install)
-RUN apt-get update && apt-get install -y \
-    ca-certificates \
-    curl \
-    gnupg \
-    liblttng-ust-dev \
-    libpcap0.8-dev \
-    locales \
-    ninja-build \
-    software-properties-common \
-    sqlite3 \
-    tzdata
+# Note installations that take a while (more than 10s)

-# clang
-RUN apt-get update && apt-get install -y \
-    clang-13 \
-    clang-format-13 \
-    clangd-13 \
-    clang-15 \
-    clang-format-15 \
-    clangd-15
+RUN apt-get update
+RUN apt-get install -y ca-certificates
+RUN apt-get install -y ccache
+RUN apt-get install -y curl
+RUN apt-get install -y fish
+RUN apt-get install -y gdb
+# git-all: ~250s
+RUN apt-get install -y git-all
+RUN apt-get install -y gnupg
+# liblttng-ust-dev: ~30s
+RUN apt-get install -y liblttng-ust-dev
+RUN apt-get install -y libssh2-1-dev
+RUN apt-get install -y locales
+RUN apt-get install -y ninja-build
+# openssh-server: ~40s
+RUN apt-get install -y openssh-server
+RUN apt-get install -y pkg-config
+RUN apt-get install -y software-properties-common
+RUN apt-get install -y sudo
+RUN apt-get install -y tzdata
+RUN apt-get install -y vim
+RUN apt-get install -y zip

-# g++
-RUN apt-get update && apt-get install -y \
-    g++-11 \
-    g++-12
-
-# python
-RUN apt-get update && apt-get install -y \
+# Python: ~30s
+RUN apt-get install -y \
    python3-pip \
    python3-venv \
    && python3 -m pip install --upgrade pip

-# dotnet
-RUN apt-get update && apt-get install -y \
-    dotnet7
+# GCC
+ARG gcc_major=13
+RUN add-apt-repository ppa:ubuntu-toolchain-r/test \
+    && apt-get update \
+    && apt-get install -y g++-$gcc_major

-# ssh
-RUN apt-get update && apt-get install -y \
-    libssh2-1-dev \
-    openssh-server
+# Clang
+ARG clang_major=17
+RUN curl -fsSL https://apt.llvm.org/llvm-snapshot.gpg.key 2> /dev/null \
+    | gpg --dearmor - \
+    | tee /usr/share/keyrings/llvm-snapshot.gpg > /dev/null \
+    && echo "deb [signed-by=/usr/share/keyrings/llvm-snapshot.gpg] http://apt.llvm.org/$(lsb_release -cs)/ llvm-toolchain-$(lsb_release -cs)-$clang_major main" \
+    | tee -a "/etc/apt/sources.list.d/llvm.list" \
+    && apt-get update \
+    && apt-get install -y \
+    clang-$clang_major \
+    clang-format-$clang_major \
+    clangd-$clang_major

-# cmake
-RUN \
-    curl -fsSL https://apt.kitware.com/keys/kitware-archive-latest.asc 2> /dev/null \
+# 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 \
-    && rm /usr/share/keyrings/kitware-archive-keyring.gpg \
-    && apt-get install -y kitware-archive-keyring \
-    && echo "deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ $(lsb_release -cs)-rc main" \
-    | tee -a /etc/apt/sources.list.d/kitware.list >/dev/null \
    && apt-get install -y cmake

-# node
+# Dotnet
+RUN curl -fsSLO "https://packages.microsoft.com/config/ubuntu/$(lsb_release -rs)/packages-microsoft-prod.deb" \
+    && dpkg -i packages-microsoft-prod.deb \
+    && rm packages-microsoft-prod.deb \
+    && apt-get update \
+    && apt-get install -y dotnet-sdk-8.0
+
+# Node
 ARG node_major=18
 RUN mkdir -p /etc/apt/keyrings \
    && curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
@@ -69,60 +78,35 @@ RUN mkdir -p /etc/apt/keyrings \
    && apt-get update \
    && apt-get install -y nodejs

-# ccache is done here so that ccache sees clang++ installed, not clang-10
-RUN apt-get update && apt-get install -y \
-    ccache 
-
-# emumba (light deps)
+# Emumba deps
 RUN apt-get update && apt-get install -y \
    build-essential \
    doxygen \
-    python3-sphinx \
    graphviz \
    libgtest-dev \
    libssl-dev \
+    pkg-config \
+    python3-sphinx \
    rapidjson-dev \
-    zlib1g-dev \
-    pkg-config
+    zlib1g-dev

-# emumba (boost)
-RUN apt-get update && apt-get install -y \
-    libboost-filesystem-dev \
-    libboost-program-options-dev \
-    libboost-test-dev \
-    libboost-date-time-dev
-
-# dev utils
-RUN apt-get update && apt-get install -y \ 
-    fish \
-    git-all \
-    sudo \
-    vim \
-    wget
-
-# set up default executables (update-alternatives)
-RUN \
-    update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-13 100; \
-    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-13 100; \
-    update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-13 100; \
-    update-alternatives --install /usr/bin/clangd clangd /usr/bin/clangd-13 100; \
-    update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-11 100; \
-    update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 100
+# Set up default executables (update-alternatives)
+RUN update-alternatives --install /usr/bin/clang clang /usr/bin/clang-$clang_major 100; \
+    update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-$clang_major 100; \
+    update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-$clang_major 100; \
+    update-alternatives --install /usr/bin/clangd clangd /usr/bin/clangd-$clang_major 100; \
+    update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-$gcc_major 100; \
+    update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-$gcc_major 100

 # Add compiler symlinks for ccache 
-RUN \
-    ln -s /usr/bin/ccache /usr/local/bin/clang; \
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang; \
    ln -s /usr/bin/ccache /usr/local/bin/clang++; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang-13; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang++-13; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang-15; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang++-15; \
+    ln -s /usr/bin/ccache /usr/local/bin/clang-$clang_major; \
+    ln -s /usr/bin/ccache /usr/local/bin/clang++-$clang_major; \
    ln -s /usr/bin/ccache /usr/local/bin/gcc; \
    ln -s /usr/bin/ccache /usr/local/bin/g++; \
-    ln -s /usr/bin/ccache /usr/local/bin/gcc-11; \
-    ln -s /usr/bin/ccache /usr/local/bin/g++-11; \
-    ln -s /usr/bin/ccache /usr/local/bin/gcc-12; \
-    ln -s /usr/bin/ccache /usr/local/bin/g++-12
+    ln -s /usr/bin/ccache /usr/local/bin/gcc-$gcc_major; \
+    ln -s /usr/bin/ccache /usr/local/bin/g++-$gcc_major

 RUN locale-gen en_US.UTF-8

@@ -130,8 +114,7 @@ ARG docker_user="bts"
 ARG docker_uid="1000"
 ARG docker_pass="bts"

-RUN \
-    groupadd -g "$docker_uid" "$docker_user" \
+RUN groupadd -g "$docker_uid" "$docker_user" \
    && useradd \
    -m \
    -u "$docker_uid" \
@@ -1,6 +0,0 @@
-{
-  "sdk": {
-    "version": "6.0.200",
-    "rollForward": "latestMajor"
-  }
-}
@@ -0,0 +1,45 @@
+/* global use, db */
+// MongoDB Playground
+// To disable this template go to Settings | MongoDB | Use Default Template For Playground.
+// Make sure you are connected to enable completions and to be able to run a playground.
+// Use Ctrl+Space inside a snippet or a string literal to trigger completions.
+// The result of the last command run in a playground is shown on the results panel.
+// By default the first 20 documents will be returned with a cursor.
+// Use 'console.log()' to print to the debug output.
+// For more documentation on playgrounds please refer to
+// https://www.mongodb.com/docs/mongodb-vscode/playgrounds/
+
+// Select the database to use.
+use('mongodbVSCodePlaygroundDB');
+
+// Insert a few documents into the sales collection.
+db.getCollection('sales').insertMany([
+    { 'item': 'abc', 'price': 10, 'quantity': 2, 'date': new Date('2014-03-01T08:00:00Z') },
+    { 'item': 'jkl', 'price': 20, 'quantity': 1, 'date': new Date('2014-03-01T09:00:00Z') },
+    { 'item': 'xyz', 'price': 5, 'quantity': 10, 'date': new Date('2014-03-15T09:00:00Z') },
+    { 'item': 'xyz', 'price': 5, 'quantity': 20, 'date': new Date('2014-04-04T11:21:39.736Z') },
+    { 'item': 'abc', 'price': 10, 'quantity': 10, 'date': new Date('2014-04-04T21:23:13.331Z') },
+    { 'item': 'def', 'price': 7.5, 'quantity': 5, 'date': new Date('2015-06-04T05:08:13Z') },
+    { 'item': 'def', 'price': 7.5, 'quantity': 10, 'date': new Date('2015-09-10T08:43:00Z') },
+    { 'item': 'abc', 'price': 10, 'quantity': 5, 'date': new Date('2016-02-06T20:20:13Z') },
+]);
+
+// Run a find command to view items sold on April 4th, 2014.
+const salesOnApril4th = db.getCollection('sales').find({
+    date: { $gte: new Date('2014-04-04'), $lt: new Date('2014-04-05') }
+}).count();
+
+// Print a message to the output window.
+console.log(`${salesOnApril4th} sales occurred in 2014.`);
+
+// Here we run an aggregation and open a cursor to the results.
+// Use '.toArray()' to exhaust the cursor to return the whole result set.
+// You can use '.hasNext()/.next()' to iterate through the cursor page by page.
+db.getCollection('sales').aggregate([
+    // Find all of the sales that occurred in 2014.
+    { $match: { date: { $gte: new Date('2014-01-01'), $lt: new Date('2015-01-01') } } },
+    // Group the total sales for each product.
+    { $group: { _id: '$item', totalSaleAmount: { $sum: { $multiply: ['$price', '$quantity'] } } } }
+]);
+
+
@@ -1,42 +1,22 @@
 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==6.33.4
+protobuf==4.21.12
 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
@@ -1,306 +1,103 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
+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}"
+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}"
 EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "cs", "cs", "{D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Spark", "src\client\spark\Spark.csproj", "{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Spark.Core", "src\cs\Bts.Spark.Core\Bts.Spark.Core.csproj", "{684863A1-3396-4D31-A731-C0725CF07F4E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Spark.Console", "src\client\Spark.Console\Spark.Console.csproj", "{387566C6-C6F6-412C-A30C-9855BBCB4816}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Spark.Api", "src\cs\Bts.Spark.Api\Bts.Spark.Api.csproj", "{45292808-4EF3-4D4A-B3F5-B75C42EE5870}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_core", "src\client\spark_core\spark_core.csproj", "{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Extensions.Hosting", "src\cs\Bts.Extensions.Hosting\Bts.Extensions.Hosting.csproj", "{AA57F8D9-7BD6-4161-881B-AD2CEF9A30F6}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_sdk", "src\client\spark_sdk\spark_sdk.csproj", "{6963C314-83C4-4667-B0D0-C2F7AE208C29}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.IO.Compression", "src\cs\Bts.IO.Compression\Bts.IO.Compression.csproj", "{28A26DF7-5F7A-43A2-A548-B55FEBCC3958}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_test", "src\client\spark_test\spark_test.csproj", "{ECD78CC5-138F-4809-A764-2358C2AC2E82}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bts.Net", "src\cs\Bts.Net\Bts.Net.csproj", "{7543386A-5EBA-4AF0-9E0F-35657B58557D}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_websocket", "src\client\spark_websocket\spark_websocket.csproj", "{3201359D-C071-4089-9EDE-B04D759F1508}"
 EndProject
-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
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 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
-	GlobalSection(NestedProjects) = preSolution
-		{D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
-		{684863A1-3396-4D31-A731-C0725CF07F4E} = {D7C6B9C7-1058-B1EA-FEE6-34C56B05AEDB}
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-		{60E0D592-FFB3-0D0A-C4AA-E88919B48F9D} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
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-		{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}
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-		{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}
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {422D1620-0166-4C26-9A81-CA8A2EB1AB58}
+	EndGlobalSection
+	GlobalSection(Performance) = preSolution
+		HasPerformanceSessions = true
 	EndGlobalSection
 EndGlobal
@@ -8,6 +8,7 @@
   public int Integer;
   public double Real;
   public string Identifier;
+   public DateTime DateTime; 
   public ImmutableList<IArithmeticExpression> Arguments;
   public ImmutableList<Assignment> Assignments;
   public IArithmeticExpression Argument;
@@ -11,20 +11,10 @@
    <PackageReference Include="YaccLexTools" Version="1.2.2" />
  </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>
+    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
+  </ItemGroup>

  <ItemGroup Label="ArithmeticExpression">
    <Scanner Include="ArithmeticExpressionTokens.lex" />
@@ -5,5 +5,9 @@
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>
-  
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
+  </ItemGroup>
+
 </Project>
@@ -1,22 +1,41 @@
-using System.Diagnostics;
+using mbts.spark;

-namespace BCG.Utilities.General;
+using System;
+using System.Runtime;

-/// <summary>
-/// Summary description for Crono.
-/// </summary>
-public class Crono {
-   readonly Stopwatch myTimer = new();
+namespace BCG.Utilities.General
+{
+	/// <summary>
+	/// Summary description for Crono.
+	/// </summary>
+	public class Crono
+	{
+      public Crono()
+      {
+         myTimer = new HighPerformanceTimer();
+      }

-   public void start() =>
-      myTimer.Start();
+      public void start() 
+      {myTimer.start();}

-   public void stop() =>
-      myTimer.Stop();
+      public void stop()
+      {myTimer.stop();}

-   public TimeSpan time =>
-      myTimer.Elapsed;
+      public TimeSpan time
+      {
+         get 
+         {
+            return new TimeSpan((long) (myTimer.totalMilliseconds * TimeSpan.TicksPerMillisecond));
+         }
+      }
+
+      public double miliseconds
+      {
+         get
+         {return myTimer.totalMilliseconds;}
+      }
+
+      private HighPerformanceTimer myTimer;
+	}

-   public double miliseconds =>
-      myTimer.Elapsed.TotalMilliseconds;
 }
@@ -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
-      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
-   }
-}
+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
+   }
+}
@@ -1,9 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net8.0-windows</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
  </PropertyGroup>

 </Project>
@@ -1,6 +1,4 @@
 using System;
-using System.Runtime.Versioning;
-
 using Microsoft.Win32;

 namespace BCG
@@ -12,7 +10,6 @@ namespace BCG
         rk.SetValue (name, value.ToString ());
      }

-      [SupportedOSPlatform("windows")]
      public static double getValue (RegistryKey rk, string name)
      {
         object v = rk.GetValue (name);
@@ -1,166 +1,166 @@
-using System;
-using System.Reflection;
-using System.Windows.Forms;
-using System.Drawing;
-using System.Diagnostics;
-using Microsoft.Win32;
-
-namespace BCG
-{
-   public class PersistWindowState
-   {
-      // event info that allows form to persist extra window state data
-      public delegate void WindowStateHandler (object sender, BlueRegistry bluereg);
-      public event WindowStateHandler LoadState;
-      public event WindowStateHandler SaveState;
-
-      private Form myParent;
-      private BlueRegistry myRegistry;
-
-      private int myNormalLeft;
-      private int myNormalTop;
-      private int myNormalWidth;
-      private int myNormalHeight;
-      private bool myResizable = true;
-      private FormWindowState myWindowState;
-      private bool myAllowSaveMinimized = false;
-      private bool mySavePosition = true;
-      private bool mySaveState = true;
-
-      public PersistWindowState (bool savePosition)
-      {
-         mySavePosition = savePosition;
-      }
-
-      public PersistWindowState ()
-      {
-      }
-
-      public bool saveState
-      {
-         [DebuggerStepThrough]
-         set { mySaveState = value; }
-      }
-
-      public Form parent
-      {
-         [DebuggerStepThrough]
-         get { return myParent; }
-         set
-         {
-            myParent = value;
-            myRegistry = new BlueRegistry (myParent.Text);
-
-            // subscribe to parent form's events
-            myParent.Closing += new System.ComponentModel.CancelEventHandler(myOnClosing);
-            myParent.Resize += new System.EventHandler(myOnResize);
-            myParent.Move += new System.EventHandler(myOnMove);
-            myParent.Load += new System.EventHandler(myOnLoad);
-
-            // get initial width and height in case form is never resized
-            myNormalWidth = myParent.Width;
-            myNormalHeight = myParent.Height;
-         }
-      }
-
-      public BlueRegistry blueRegistry
-      {
-         [DebuggerStepThrough]
-         get { return myRegistry; }
-         [DebuggerStepThrough]
-         set { myRegistry = value; }
-      }
-
-      public bool resizable
-      {
-         [DebuggerStepThrough]
-         set { myResizable = value; }
-      }
-
-      public bool allowSaveMinimized
-      {
-         [DebuggerStepThrough]
-         set { myAllowSaveMinimized = value; }
-      }
-
-      private void myOnResize(object sender, System.EventArgs e)
-      {
-         // save width and height
-         if (myParent.WindowState == FormWindowState.Normal && myResizable)
-         {
-            myNormalWidth = myParent.Width;
-            myNormalHeight = myParent.Height;
-         }
-      }
-
-      private void myOnMove(object sender, System.EventArgs e)
-      {
-         // save position
-         if(myParent.WindowState == FormWindowState.Normal)
-         {
-            myNormalLeft = myParent.Left;
-            myNormalTop = myParent.Top;
-         }
-         // save state
-         myWindowState = myParent.WindowState;
-      }
-
-      private void myOnClosing(object sender, System.ComponentModel.CancelEventArgs e)
-      {
-         // save position, size and state
-         if (mySavePosition)
-         {
-            myRegistry.setValue (RegistryRoot.HKCU, "Left", myNormalLeft);
-            myRegistry.setValue (RegistryRoot.HKCU, "Top", myNormalTop);
-         }
-
-         if (myResizable)
-         {
-            myRegistry.setValue (RegistryRoot.HKCU, "Width", myNormalWidth);
-            myRegistry.setValue (RegistryRoot.HKCU, "Height", myNormalHeight);
-         }
-
-         // check if we are allowed to save the state as minimized (not normally)
-         if (!myAllowSaveMinimized)
-         {
-            if(myWindowState == FormWindowState.Minimized)
-               myWindowState = FormWindowState.Normal;
-         }
-
-         if (mySaveState)
-            myRegistry.setValue (RegistryRoot.HKCU, "WindowState", (int) myWindowState);
-        
-         // fire SaveState event
-         if (SaveState != null)
-            SaveState (this, myRegistry);
-      }
-
-      private void myOnLoad (object sender, System.EventArgs e)
-      {
-         if (mySavePosition)
-         {
-            int left = (int) myRegistry.getValue (RegistryRoot.HKCU, "Left", myParent.Left);
-            int top = (int) myRegistry.getValue (RegistryRoot.HKCU, "Top", myParent.Top);
-            myParent.Location = new Point (left, top);
-         }
-
-         if (myResizable)
-         {
-            int width = (int) myRegistry.getValue (RegistryRoot.HKCU, "Width", myParent.Width);
-            int height = (int) myRegistry.getValue (RegistryRoot.HKCU, "Height", myParent.Height);
-            myParent.Size = new Size (width, height);
-         }
-            
-         if (mySaveState)
-         {
-            FormWindowState windowState = (FormWindowState) myRegistry.getValue (RegistryRoot.HKCU, "WindowState", 
-               (int) myParent.WindowState);
-            myParent.WindowState = windowState;
-         }
-
-         // fire LoadState event
-         if(LoadState != null)
-            LoadState (this, myRegistry);
-      }
-   }
-}
+using System;
+using System.Reflection;
+using System.Windows.Forms;
+using System.Drawing;
+using System.Diagnostics;
+using Microsoft.Win32;
+
+namespace BCG
+{
+   public class PersistWindowState
+   {
+      // event info that allows form to persist extra window state data
+      public delegate void WindowStateHandler (object sender, BlueRegistry bluereg);
+      public event WindowStateHandler LoadState;
+      public event WindowStateHandler SaveState;
+
+      private Form myParent;
+      private BlueRegistry myRegistry;
+
+      private int myNormalLeft;
+      private int myNormalTop;
+      private int myNormalWidth;
+      private int myNormalHeight;
+      private bool myResizable = true;
+      private FormWindowState myWindowState;
+      private bool myAllowSaveMinimized = false;
+      private bool mySavePosition = true;
+      private bool mySaveState = true;
+
+      public PersistWindowState (bool savePosition)
+      {
+         mySavePosition = savePosition;
+      }
+
+      public PersistWindowState ()
+      {
+      }
+
+      public bool saveState
+      {
+         [DebuggerStepThrough]
+         set { mySaveState = value; }
+      }
+
+      public Form parent
+      {
+         [DebuggerStepThrough]
+         get { return myParent; }
+         set
+         {
+            myParent = value;
+            myRegistry = new BlueRegistry (myParent.Text);
+
+            // subscribe to parent form's events
+            myParent.Closing += new System.ComponentModel.CancelEventHandler(myOnClosing);
+            myParent.Resize += new System.EventHandler(myOnResize);
+            myParent.Move += new System.EventHandler(myOnMove);
+            myParent.Load += new System.EventHandler(myOnLoad);
+
+            // get initial width and height in case form is never resized
+            myNormalWidth = myParent.Width;
+            myNormalHeight = myParent.Height;
+         }
+      }
+
+      public BlueRegistry blueRegistry
+      {
+         [DebuggerStepThrough]
+         get { return myRegistry; }
+         [DebuggerStepThrough]
+         set { myRegistry = value; }
+      }
+
+      public bool resizable
+      {
+         [DebuggerStepThrough]
+         set { myResizable = value; }
+      }
+
+      public bool allowSaveMinimized
+      {
+         [DebuggerStepThrough]
+         set { myAllowSaveMinimized = value; }
+      }
+
+      private void myOnResize(object sender, System.EventArgs e)
+      {
+         // save width and height
+         if (myParent.WindowState == FormWindowState.Normal && myResizable)
+         {
+            myNormalWidth = myParent.Width;
+            myNormalHeight = myParent.Height;
+         }
+      }
+
+      private void myOnMove(object sender, System.EventArgs e)
+      {
+         // save position
+         if(myParent.WindowState == FormWindowState.Normal)
+         {
+            myNormalLeft = myParent.Left;
+            myNormalTop = myParent.Top;
+         }
+         // save state
+         myWindowState = myParent.WindowState;
+      }
+
+      private void myOnClosing(object sender, System.ComponentModel.CancelEventArgs e)
+      {
+         // save position, size and state
+         if (mySavePosition)
+         {
+            myRegistry.setValue (RegistryRoot.HKCU, "Left", myNormalLeft);
+            myRegistry.setValue (RegistryRoot.HKCU, "Top", myNormalTop);
+         }
+
+         if (myResizable)
+         {
+            myRegistry.setValue (RegistryRoot.HKCU, "Width", myNormalWidth);
+            myRegistry.setValue (RegistryRoot.HKCU, "Height", myNormalHeight);
+         }
+
+         // check if we are allowed to save the state as minimized (not normally)
+         if (!myAllowSaveMinimized)
+         {
+            if(myWindowState == FormWindowState.Minimized)
+               myWindowState = FormWindowState.Normal;
+         }
+
+         if (mySaveState)
+            myRegistry.setValue (RegistryRoot.HKCU, "WindowState", (int) myWindowState);
+        
+         // fire SaveState event
+         if (SaveState != null)
+            SaveState (this, myRegistry);
+      }
+
+      private void myOnLoad (object sender, System.EventArgs e)
+      {
+         if (mySavePosition)
+         {
+            int left = (int) myRegistry.getValue (RegistryRoot.HKCU, "Left", myParent.Left);
+            int top = (int) myRegistry.getValue (RegistryRoot.HKCU, "Top", myParent.Top);
+            myParent.Location = new Point (left, top);
+         }
+
+         if (myResizable)
+         {
+            int width = (int) myRegistry.getValue (RegistryRoot.HKCU, "Width", myParent.Width);
+            int height = (int) myRegistry.getValue (RegistryRoot.HKCU, "Height", myParent.Height);
+            myParent.Size = new Size (width, height);
+         }
+            
+         if (mySaveState)
+         {
+            FormWindowState windowState = (FormWindowState) myRegistry.getValue (RegistryRoot.HKCU, "WindowState", 
+               (int) myParent.WindowState);
+            myParent.WindowState = windowState;
+         }
+
+         // fire LoadState event
+         if(LoadState != null)
+            LoadState (this, myRegistry);
+      }
+   }
+}
@@ -6,80 +6,23 @@ 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 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) {
+      var cmp1 = value1.Cast<IComparable>();
+      var cmp2 = value2.Cast<IComparable>();
      try {
-         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);
-            }
-         }
+         var v1 = cmp1.GetValue(env);
+         var v2 = cmp2.GetValue(env);
+         return v1.GetType().IsNumeric() ?
+            new NumericComparer().Compare(v1, v2) : v1.CompareTo(v2);
      } 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));
   }
 }
@@ -1,11 +1,19 @@
 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) =>
-      evaluate(env);
+   public bool Evaluate(IDictionary<string, object?> env) {
+      try {
+         return evaluate(env);
+      } catch (Exception ex) {
+         Log.assert(false, $"BooleanExpression.Evaluate failed: {ex}");
+         throw;
+      }
+   }
 }
@@ -42,11 +42,15 @@ OpenParenthesis          \(
 CloseParenthesis         \)
 Comma                    ,
 Negate                   '!'
-MapsTo                   ':'
 IsOfType                 '/'

 %%

+{StringConstant} {
+   yylval.String = yytext.Substring(1, yytext.Length - 2).Replace(@"\'", "'");
+   return (int)Token.STRING_CONSTANT;
+} 
+
 {BooleanConstant} {
   yylval.Boolean = yytext.ToLower() switch {
      "true" => true,
@@ -57,11 +61,6 @@ 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;
@@ -98,10 +97,6 @@ IsOfType                 '/'
   return (int)Token.NEGATE;
 }

-{MapsTo} {
-   return (int)Token.MAPS_TO;
-}
-
 {Equal} {
   return (int)Token.EQUAL;
 }
@@ -8,23 +8,13 @@

  <ItemGroup>
    <PackageReference Include="Google.Protobuf" Version="3.24.3" />
-    <PackageReference Include="YaccLexTools" Version="1.2.3" />
+    <PackageReference Include="YaccLexTools" Version="1.2.0" />
  </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>
+    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
+  </ItemGroup>
  
  <ItemGroup>
    <Scanner Include="BooleanExpressionTokens.lex" />
@@ -10,20 +10,11 @@
    <PackageReference Include="YaccLexTools" Version="1.2.2" />
  </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>
+    <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
+    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
+  </ItemGroup>

  <ItemGroup Label="ColumnExpression">
    <Scanner Include="ColumnExpressionTokens.lex" />
@@ -10,20 +10,11 @@
    <PackageReference Include="YaccLexTools" Version="1.2.2" />
  </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>
+    <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
+    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
+  </ItemGroup>

  <ItemGroup Label="ColumnSortExpression">
    <Scanner Include="ColumnSortExpressionTokens.lex" />
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\client\spark_websocket\spark_websocket.csproj" />
+    <ProjectReference Include="..\DataStreamExpressions\DataStreamExpressions.csproj" />
+    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,9 @@
+namespace Bts.DataStream.Websocket;
+
+class ClientSubscription(WebsocketClientID id, SubscriptionParams @params, IDisposable dispose) : IDisposable {
+   public SubscriptionParams Params => @params;
+   public WebsocketClientID Id => id;
+
+   public void Dispose() =>
+      dispose.Dispose();
+}
@@ -0,0 +1,301 @@
+namespace Bts.DataStream.Websocket;
+
+using BCG;
+
+using bts;
+using bts.api.core;
+using bts.collections;
+using bts.websocket_core.json_rpc;
+
+using Bts.DataStreamExpressions;
+
+using mbts.utils;
+
+using Spark.Core.Disposables;
+using Spark.Core.Json;
+
+using System.Buffers;
+using System.Reactive.Subjects;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+
+/// <summary>
+/// Represents an I/O model (<see cref="ISubject{TSource, TResult}"/>), that accepts websocket
+/// requests (from clients) as input, and emits data/notifications (to clients) as output.
+/// This class's chief role is managing data subscriptions to sparkd on the clients' behalf.
+/// </summary>
+public class DataSync(JsonSerializerOptions? serializerOpts = null) :
+   ISubject<WebsocketConnectionUpdate, IEnumerable<WebsocketOutgoingMessage>> {
+   protected readonly object lockObj = new();
+   readonly JsonSerializerOptions serializerOpts = serializerOpts ?? JsonSerializerOptions.Default;
+   readonly Dictionary<WebsocketClientID, List<ClientSubscription>> clients = [];
+
+   event Action<IEnumerable<WebsocketOutgoingMessage>>? requestSend;
+
+   public void OnCompleted() =>
+      Log.Api.info("DataSync incoming request stream has completed.");
+
+   public void OnError(Exception error) =>
+      Log.Api.error($"DataSync error: {error}");
+
+   public void OnNext(WebsocketConnectionUpdate value) {
+      switch (value.Type) {
+         case WebsocketConnectionUpdateType.IncomingMessage:
+            onIncomingMessage(value.IncomingMessage);
+            break;
+         case WebsocketConnectionUpdateType.Connect:
+            onConnect(value.Connect);
+            break;
+         case WebsocketConnectionUpdateType.Disconnect:
+            onDisconnect(value.Disconnect);
+            break;
+         default:
+            Log.assert(false, $"Unexpected WebsocketConnectionUpdate type: {value.Type}");
+            break;
+      }
+   }
+
+   public IDisposable Subscribe(IObserver<IEnumerable<WebsocketOutgoingMessage>> observer) {
+      lock (lockObj) {
+         requestSend += observer.OnNext;
+         return Disposable.Create(Dispose);
+      }
+      void Dispose() {
+         lock (lockObj) {
+            requestSend -= observer.OnNext;
+         }
+      }
+   }
+
+   static JsonRpcId? extractRpcId(string messageBody) {
+      try {
+         return JsonNode.Parse(messageBody)
+            ?.AsObject()
+            ?.GetValueOrDefault("id")
+            ?.Deserialize<JsonRpcId>();
+      } catch {
+         return null;
+      }
+   }
+
+   static string getRpcNotification(DataPacket dp) {
+      using (var buffer = new MemoryStream())
+      using (var writer = new Utf8JsonWriter(buffer))
+      using (writer.WriteObject()) {
+         writer.WriteString("method", "subscription");
+         using (writer.WriteObject("params")) {
+            writer.Write("tableName", dp.schema.tableName);
+            writer.Write("columns", dp.schema.columnInfo);
+            var cellJsonFactories = dp.schema.columnInfo.Select(getCellJsonFactory).ToList();
+            using (writer.WriteArray("added")) {
+               foreach (IBlueRow row in (dp.addedRows?.Cast<IBlueRow>()).empty_if_null()) {
+                  using (writer.WriteObject()) {
+                     for (int i = 0; i < cellJsonFactories.Count; i++) {
+                        writer.Write(dp.schema.columnInfo[i].colName, cellJsonFactories[i](row));
+                     }
+                  }
+               }
+            }
+            using (writer.WriteArray("deleted")) {
+               foreach (IBlueRow row in (dp.deletedRows?.Cast<IBlueRow>()).empty_if_null()) {
+                  using (writer.WriteObject()) {
+                     for (int i = 0; i < cellJsonFactories.Count; i++) {
+                        writer.Write(dp.schema.columnInfo[i].colName, cellJsonFactories[i](row));
+                     }
+                  }
+               }
+            }
+         }
+         writer.WriteString("jsonrpc", "2.0");
+         writer.Flush();
+         return Encoding.UTF8.GetString(buffer.ToArray());
+      }
+   }
+
+   static Func<IBlueRow, JsonNode?> getCellJsonFactory(ColumnInfo colInfo) {
+      var t = colInfo.colType;
+      if (t == typeof(int)) {
+         return NullCheckWrapper(v => (int)v);
+      }
+      if (t == typeof(uint)) {
+         return NullCheckWrapper(v => (uint)v);
+      }
+      if (t == typeof(long)) {
+         return NullCheckWrapper(v => (long)v);
+      }
+      if (t == typeof(ulong)) {
+         return NullCheckWrapper(v => (ulong)v);
+      }
+      if (t == typeof(short)) {
+         return NullCheckWrapper(v => (short)v);
+      }
+      if (t == typeof(ushort)) {
+         return NullCheckWrapper(v => (ushort)v);
+      }
+      if (t == typeof(double)) {
+         return NullCheckWrapper(v => (double)v);
+      }
+      if (t == typeof(float)) {
+         return NullCheckWrapper(v => (float)v);
+      }
+      if (t == typeof(bool)) {
+         return NullCheckWrapper(v => (bool)v);
+      }
+      return NullCheckWrapper(v => (string)v);
+
+      Func<IBlueRow, JsonNode?> NullCheckWrapper(Func<object, JsonNode> toJson) =>
+         r => {
+            var obj = r[colInfo.colNo];
+            if (obj is null) {
+               return null;
+            }
+            return toJson(obj);
+         };
+   }
+
+   void onConnect(WebsocketConnectNotification notification) {
+      var id = notification.Id;
+      lock (lockObj) {
+         clients.Add(id, []);
+      }
+      Log.Api.info($"DataStreamWebsocketDataSync client connected. clientId: {notification.Id}");
+      if (notification.Message is not null) {
+         onIncomingMessage(notification.Message);
+      }
+   }
+
+   void onDisconnect(WebsocketDisconnectNotification notification) {
+      Log.Api.warn($"DataStreamWebsocketDataSync client disconnected. clientId: {notification.Id}");
+      unsubscribeAll(notification.Id);
+      clients.Remove(notification.Id);
+   }
+
+   void onIncomingMessage(WebsocketIncomingMessage message) {
+      var id = message.sender_client_id;
+      if (!JsonRpcRequest.TryDeserialize(message, out var req, out var err)) {
+         onBadRequest(message, err);
+         return;
+      }
+      switch (req.Method!.ToLower()) {
+         case "subscribe":
+            subscribe(id, req);
+            break;
+         case "publish":
+            Log.Api.error("DataStreamWebsocket api 'publish' not implemented.");
+            // TODO
+            break;
+         case "unsubscribe":
+            unsubscribe(id, req);
+            break;
+         case "unsubscribe_all":
+            unsubscribeAll(id);
+            break;
+         default:
+            Log.Api.error($"Received request of unknown type: {req}");
+            break;
+      }
+   }
+
+   void sendResponse<T>(WebsocketClientID id, JsonRpcId rpcId, T rpcParams) {
+      var rpcRes = JsonRpcResponse.Create(rpcId, rpcParams);
+      var rpcResStr = JsonSerializer.Serialize(rpcRes, serializerOpts);
+      send([new(id, rpcResStr)]);
+   }
+
+   void sendError<T>(WebsocketClientID id, JsonRpcId rpcId, JsonRpcError<T> error) {
+      var rpcRes = JsonRpcResponse.CreateError(rpcId, error);
+      var rpcResStr = JsonSerializer.Serialize(rpcRes, serializerOpts);
+      send([new(id, rpcResStr)]);
+   }
+
+   bool send(IEnumerable<WebsocketOutgoingMessage> messages) {
+      lock (lockObj) {
+         if (requestSend is null) {
+            Log.Api.warn(
+               $"Unable to send message(s) because '{nameof(requestSend)}' handler is null");
+            return false;
+         }
+         requestSend(messages);
+         return true;
+      }
+   }
+
+   void subscribe(WebsocketClientID id, JsonRpcRequest<JsonObject?> req) {
+      var subParams = req.Params!.Deserialize<SubscriptionParams>()!;
+      var exp = DataStreamExpressionsInterpreter.Evaluate(subParams.Query!);
+      var stream = exp.getView(new Dictionary<string, StatementExpression>(0));
+      var sub = new ClientSubscription(id, subParams, Disposable.Create(Dispose));
+      lock (lockObj) {
+         clients[id].Add(sub);
+         sendResponse(id, req.Id!.Value, req.Params);
+         stream.onChange += OnChange;
+      }
+
+      void OnChange(object? newValue) {
+         var dp = ExceptionAssert.of_type<DataPacket>(newValue);
+         var notif = getRpcNotification(dp);
+         send([new(id, notif)]);
+      }
+
+      void Dispose() =>
+         stream.onChange -= OnChange;
+   }
+
+   void unsubscribe(WebsocketClientID id, JsonRpcRequest<JsonObject?> req) {
+      var subParams = req.Params!.Deserialize<SubscriptionParams>();
+      var subParamsStr = JsonSerializer.Serialize(subParams, serializerOpts);
+      // Minimize amount of code inside lock (just need it to find/remove the subscription)
+      List<ClientSubscription>? subs = null;
+      ClientSubscription? sub = null;
+      lock (lockObj) {
+         subs = clients.GetValueOrDefault(id);
+         subs?.TryRemoveFirst(s => s!.Params.Equals(subParams), out sub);
+      }
+      if (subs is null) {
+         // Didn't find client (log/throw).
+         var msg = $"Unable to unsubscribe: did not find client. Id: {id}.\nParams:\n{subParamsStr}";
+         Log.Api.error(msg);
+         throw new Exception(msg);
+      }
+      if (sub is null) {
+         // Found client, but didn't find subscription (log/throw).
+         var msg = $"Unable to unsubscribe: did not find the specified subscription. " +
+            $"Id: {id}. Request:\n{subParams}";
+         Log.Api.error(msg);
+         throw new Exception(msg);
+      }
+      // Found client and subscription (dispose/remove subscription).
+      Log.Api.info($"Unsubscribing client. Id: {id}.\nParams:\n{subParamsStr}");
+      sub.Dispose();
+   }
+
+   void unsubscribeAll(WebsocketClientID id) {
+      lock (lockObj) {
+         if (!clients.TryGetValue(id, out var subs)) {
+            throw new Exception(
+               $"Unable to unsubscribe: did not find client with id {id}");
+         }
+         subs.DisposeAll();
+         subs.Clear();
+      }
+   }
+
+   void onBadRequest(WebsocketIncomingMessage req, string? errorMsg) {
+      var rpcId = extractRpcId(req.message_body);
+      var logMsg = $"Recieved invalid request:\n{req.message_body}";
+      if (errorMsg is not null) {
+         logMsg += $"\n\n**Exception**\n{errorMsg}";
+      }
+      Log.Api.error(logMsg);
+      if (rpcId is null) {
+         return;
+      }
+      // Send error back to client
+      var rpcErr = JsonRpcError.Create(
+         (long)JsonRpcErrorCode.InvalidRequest,
+         $"Received invalid request: {errorMsg ?? "unknown error"}",
+         req.message_body);
+      sendError(req.sender_client_id, rpcId.Value, rpcErr);
+   }
+}
@@ -0,0 +1,34 @@
+namespace Bts.DataStream.Websocket;
+
+using Newtonsoft.Json.Linq;
+
+using System.Diagnostics.CodeAnalysis;
+
+public static class JObjectExtensions {
+   public static bool TryParse<T>(
+      this JObject filter, string key, [MaybeNull] out T obj, [NotNullWhen(false)] out string? error) {
+      obj = default;
+      var value = filter.GetValueOrDefault(key)?.ToString();
+      if (value == null) {
+         error = $"{key} not present";
+         return true;
+      }
+      return WebsocketJsonParsers.TryParse(value, key, out obj, out error);
+   }
+
+   public static bool TryParse<T>(
+     this JObject filter, string key, out T result, [NotNullWhen(false)] out string? error, T defaultValue) {
+      var value = filter.GetValueOrDefault(key)?.ToString();
+      if (value == null) {
+         result = defaultValue;
+         error = $"{key} not present";
+         return true;
+      }
+      if (WebsocketJsonParsers.TryParse<T>(value, key, out var maybeRes, out error)) {
+         result = maybeRes ?? defaultValue;
+         return true;
+      }
+      result = defaultValue;
+      return false;
+   }
+}
@@ -0,0 +1,48 @@
+namespace Bts.DataStream.Websocket;
+
+using Spark.Core;
+
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+class MultilineStringJsonConverter : JsonConverter<string> {
+   public override string? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) {
+      if (typeToConvert != typeof(string)) {
+         throw new ArgumentException($"Unable to parse {typeToConvert}", nameof(typeToConvert));
+      }
+      return reader.TokenType switch {
+         JsonTokenType.String => StringImpl(ref reader),
+         JsonTokenType.StartArray => ArrayImpl(ref reader),
+         _ => throw new ArgumentException(
+            $"Unable to parse {typeof(SubscriptionParams)} from {reader.TokenType}"),
+      };
+
+      static string? StringImpl(ref Utf8JsonReader reader) =>
+         new(reader.GetString()!);
+
+      static string? ArrayImpl(ref Utf8JsonReader reader) {
+         var lines = new List<string>(2);
+         while (reader.Read()) {
+            switch (reader.TokenType) {
+               case JsonTokenType.String:
+                  lines.Add(reader.GetString()!);
+                  break;
+               case JsonTokenType.EndArray:
+                  return string.Join("\n", lines);
+            }
+         }
+         throw new JsonException(
+            $"Failed to parse {typeof(SubscriptionParams)} (did not reach end of array)");
+      }
+   }
+
+   public override void Write(Utf8JsonWriter writer, string value, JsonSerializerOptions options) {
+      var lines = value.Split("\n");
+      if (lines.Length < 2) {
+         writer.WriteRawValue(value);
+         return;
+      }
+      writer.WriteRawValue($"[{", ".join(lines)}]");
+   }
+}
@@ -0,0 +1,8 @@
+namespace Bts.DataStream.Websocket;
+
+public enum RequestType {
+   Unspecified,
+   Subscribe,
+   Unsubscribe,
+   UnsubscribeAll,
+}
@@ -0,0 +1,25 @@
+namespace Bts.DataStream.Websocket;
+
+using bts;
+
+using Google.Protobuf;
+
+using System.Text.Json;
+
+public static class Session {
+   static int sessionIdCounter;
+
+   public static async Task Start(
+      WebsocketServerConfig config, JsonSerializerOptions? opts) {
+      opts ??= JsonSerializerOptions.Default;
+      var sessionId = Interlocked.Increment(ref sessionIdCounter);
+      var gateway = new WebsocketClient(config);
+      var sync = new DataSync(opts);
+      using (gateway.Subscribe(sync))
+      using (sync.Subscribe(gateway)) {
+         Log.Api.info($"Starting DataStream Websocket Session {sessionId}");
+         Log.Api.info($"DataStream Websocket Session {sessionId} config:\n{JsonFormatter.Default.Format(config)}");
+         await gateway.ConnectAsync();
+      }
+   }
+}
@@ -0,0 +1,112 @@
+namespace Bts.DataStream.Websocket;
+
+using bts.utils;
+
+using Spark.Core;
+using Spark.Core.Json;
+
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+public class SubscriptionParams(string? query = null) : IEquatable<SubscriptionParams> {
+   static class PropNames {
+      public const string QUERY = "query";
+   }
+
+   // Serializer supports plain string, or an array of lines for convenience
+   [MaybeNull]
+   [JsonPropertyName(PropNames.QUERY)]
+   [JsonConverter(typeof(MultilineStringJsonConverter))]
+   public string? Query { get; set; } = query;
+
+   public bool Equals(SubscriptionParams? other) =>
+      other is not null &&
+      // Not the most elegant equals impl, but it'll work
+      Query.safe_equals(other.Query, (a, b) => a?.ToString() == b?.ToString());
+
+   class SubscriptionParamsConverter : JsonConverter<SubscriptionParams> {
+      public override bool CanConvert(Type typeToConvert) =>
+         typeToConvert == typeof(SubscriptionParams);
+
+      public override SubscriptionParams Read(
+         ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) {
+         if (typeToConvert != typeof(SubscriptionParams)) {
+            throw new ArgumentException($"Unable to parse {typeToConvert}", nameof(typeToConvert));
+         }
+         return read(ref reader);
+      }
+
+      static SubscriptionParams read(ref Utf8JsonReader reader) {
+         return reader.TokenType switch {
+            JsonTokenType.String => StringImpl(ref reader),
+            JsonTokenType.StartArray => ArrayImpl(ref reader),
+            JsonTokenType.StartObject => ObjectImpl(ref reader),
+            _ => throw new ArgumentException(
+               $"Unable to parse {typeof(SubscriptionParams)} from {reader.TokenType}"),
+         };
+
+         static SubscriptionParams StringImpl(ref Utf8JsonReader reader) =>
+            new(reader.GetString()!);
+
+         static SubscriptionParams ArrayImpl(ref Utf8JsonReader reader) {
+            var lines = new List<string>(2);
+            while (reader.Read()) {
+               switch (reader.TokenType) {
+                  case JsonTokenType.String:
+                     lines.Add(reader.GetString()!);
+                     break;
+                  case JsonTokenType.EndArray:
+                     return new("\n".join(lines));
+               }
+            }
+            throw new JsonException(
+               $"Failed to parse {typeof(SubscriptionParams)} (did not reach end of array)");
+         }
+
+         static SubscriptionParams ObjectImpl(ref Utf8JsonReader reader) {
+            var lines = new List<string>(2);
+            while (reader.Read()) {
+               switch (reader.TokenType) {
+                  case JsonTokenType.PropertyName:
+                     var propName = reader.GetString()!;
+                     if (propName == PropNames.QUERY) {
+                        switch (reader.TokenType) {
+                           case JsonTokenType.StartArray:
+                              return ArrayImpl(ref reader);
+                           case JsonTokenType.String:
+                              return StringImpl(ref reader);
+                        }
+                     }
+                     break;
+                  case JsonTokenType.String:
+                     lines.Add(reader.GetString()!);
+                     break;
+                  case JsonTokenType.EndArray:
+                     return new("\n".join(lines));
+               }
+            }
+            throw new JsonException(
+               $"Failed to parse {typeof(SubscriptionParams)} (did not reach end of array)");
+         }
+      }
+
+      public override void Write(
+         Utf8JsonWriter writer, SubscriptionParams value, JsonSerializerOptions options) {
+         var q = value.Query;
+         var lines = q?.Split("\n");
+         if (lines is null || lines.Length < 2) {
+            writer.WriteString(PropNames.QUERY, value.Query);
+            return;
+         }
+         writer.WriteArray(PropNames.QUERY, lines);
+      }
+   }
+
+   public override bool Equals(object? obj) =>
+      Equals(obj as SubscriptionParams);
+
+   public override int GetHashCode() =>
+      Query?.Length ?? typeof(SubscriptionParams).GetHashCode();
+}
@@ -0,0 +1,5 @@
+global using bts.websocket_core;
+
+global using System;
+
+global using System.Collections.Immutable;
@@ -0,0 +1,41 @@
+#nullable enable
+using BCG;
+
+using Spark.Core.Json;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Bts.DataStreamCore;
+
+class ViewStreamUpdate {
+   [JsonPropertyName("tableName")]
+   public string? TableName { get; set; }
+
+   [JsonPropertyName("columns")]
+   public List<ColumnInfo>? Columns { get; set; }
+
+   [JsonPropertyName("addedRows")]
+   public List<Dictionary<string, object?>>? AddedRows { get; set; }
+
+   [JsonPropertyName("deletedRows")]
+   public List<Dictionary<string, object?>>? DeletedRows { get; set; }
+
+   public DataPacket ToDataPacket(BlueTable state, bool applyChanges = true) {
+      var schema = new BlueTableSchema([.. Columns!], TableName);
+      var addedRowsTable = new BlueTable(schema);
+      var deletedRowsTable = new BlueTable(schema);
+      if (applyChanges) {
+         state.deleteRows(deletedRowsTable);
+         state.addRows(addedRowsTable);
+      }
+      return new(state, addedRowsTable, deletedRowsTable);
+   }
+
+   public static string ToJson() {
+      return "";
+   }
+}
@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.CommandLine" Version="2.0.0-beta4.22272.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Bts.DataStream.Websocket\Bts.DataStream.Websocket.csproj" />
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,7 @@
+{
+  "host": "localhost",
+  "port": 8080,
+  "scheme": "ws",
+  "default_end_point": "/",
+  "keep_alive_interval_secs": 1
+}
@@ -0,0 +1,76 @@
+using bts.api.core;
+
+using Bts.DataStream.Websocket;
+
+using Google.Protobuf;
+
+using System.CommandLine.Parsing;
+using System.Text.Json;
+
+static WebsocketServerConfig readConfigFile(string path) {
+   using var fs = File.OpenRead(path);
+   using var sr = new StreamReader(fs);
+   return JsonParser.Default.Parse<WebsocketServerConfig>(sr);
+}
+
+static WebsocketServerConfig? readConfigArg(ArgumentResult result) {
+   var path = result.Tokens.Select(t => t.Value).FirstOrDefault() ?? string.Empty;
+   return readConfigFile(path);
+}
+
+static WebsocketServerConfig getDefaultConfig() {
+   const string defaultCfgPath = "DataStreamWebsocketServer.conf";
+   if (File.Exists(defaultCfgPath)) {
+      return readConfigFile(defaultCfgPath);
+   }
+   return new() {
+      Scheme = "http",
+      Host = "localhost",
+      Port = 8080,
+      DefaultEndPoint = "/",
+      KeepAliveIntervalSecs = 1
+   };
+}
+   
+static async Task run(
+   WebsocketServerConfig? wssConfig, string user, string password, string? sparkdConfigSource) {
+   var opts = new JsonSerializerOptions(JsonSerializerDefaults.Web);
+   wssConfig ??= getDefaultConfig();
+   Console.WriteLine("Starting DataStreamWebsocketServer...");
+   var serviceCtx = ServiceContext.create(sparkdConfigSource);
+   await serviceCtx.login(user, password);
+   await Session.Start(wssConfig, opts);
+   // if (sparkdConfigSource is not null && sparkdConfigSource.Length > 9999) {
+   // } else {
+   //    await ChatGptSession.Start();
+   // }
+}
+
+var userOpt = new Option<string>("--user", () => "bts");
+var passOpt = new Option<string>("--password", () => string.Empty);
+var sparkdConfigSourceOpt = new Option<string>(
+   "--sparkd", description: "The sparkd config server url");
+// var bling = new ParseArgument<WebsocketServerConfig?>(parseWsConfig);
+
+// WebsocketServerConfig? parseWsConfig(ArgumentResult result) {
+//    Token t;
+//    TokenType tt;
+//    Symbol s;
+//    throw new NotImplementedException();
+// }
+
+var configOpt = new Option<WebsocketServerConfig?>(
+   "--config", readConfigArg, description: "WebsocketServerConfig file path");
+configOpt.SetDefaultValue(new());
+var rootCommand = new RootCommand("Starts a DataStream Websocket Server");
+rootCommand.AddOption(configOpt);
+rootCommand.AddOption(userOpt);
+rootCommand.AddOption(passOpt);
+rootCommand.SetHandler(run, configOpt, userOpt, passOpt, sparkdConfigSourceOpt);
+
+try {
+   return await rootCommand.InvokeAsync(args);
+} catch (Exception ex) {
+   Console.WriteLine($"Error: {ex}");
+}
+return 1;
@@ -0,0 +1,6 @@
+global using bts.websocket_core;
+global using bts.websocket_core.json_rpc;
+
+global using System.CommandLine;
+
+global using System.Collections.Immutable;
@@ -0,0 +1,20 @@
+module.exports = {
+  root: true,
+  env: { browser: true, es2020: true },
+  extends: [
+    'eslint:recommended',
+    'plugin:react/recommended',
+    'plugin:react/jsx-runtime',
+    'plugin:react-hooks/recommended',
+  ],
+  ignorePatterns: ['dist', '.eslintrc.cjs'],
+  parserOptions: { ecmaVersion: 'latest', sourceType: 'module' },
+  settings: { react: { version: '18.2' } },
+  plugins: ['react-refresh'],
+  rules: {
+    'react-refresh/only-export-components': [
+      'warn',
+      { allowConstantExport: true },
+    ],
+  },
+}
@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.VisualStudio.JavaScript.Sdk/0.5.128-alpha">
+  <PropertyGroup>
+    <StartupCommand>npm run dev</StartupCommand>
+    <JavaScriptTestRoot>src\</JavaScriptTestRoot>
+    <JavaScriptTestFramework>Jest</JavaScriptTestFramework>
+    <!-- Allows the build (or compile) script located on package.json to run on Build -->
+    <ShouldRunBuildScript>false</ShouldRunBuildScript>
+    <!-- Folder where production build objects will be placed -->
+    <PublishAssetsDirectory>$(MSBuildProjectDirectory)\dist</PublishAssetsDirectory>
+  </PropertyGroup>
+</Project>
@@ -0,0 +1,8 @@
+# React + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react/README.md) uses [Babel](https://babeljs.io/) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Vite + React</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+  </packageSources>
+  <disabledPackageSources>
+    <clear />
+  </disabledPackageSources>
+</configuration>
@@ -0,0 +1,27 @@
+{
+  "name": "bts.datastreamwebapp.client",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "lint": "eslint . --ext js,jsx --report-unused-disable-directives --max-warnings 0",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-use-websocket": "^4.5.0"
+  },
+  "devDependencies": {
+    "@types/react": "^18.2.43",
+    "@types/react-dom": "^18.2.17",
+    "@vitejs/plugin-react": "^4.2.1",
+    "eslint": "^8.55.0",
+    "eslint-plugin-react": "^7.33.2",
+    "eslint-plugin-react-hooks": "^4.6.0",
+    "eslint-plugin-react-refresh": "^0.4.5",
+    "vite": "^5.0.8"
+  }
+}
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>
@@ -0,0 +1,44 @@
+#root {
+    max-width: 1280px;
+    margin: 0 auto;
+    padding: 2rem;
+    text-align: center;
+    --cell-background-color: #293136;
+    --cell-color: #cbe3ef;
+}
+
+tr:nth-child(even) {
+    background: #F2F2F2;
+}
+
+tr:nth-child(odd) {
+    background: #FFF;
+}
+
+th, td {
+    padding-left: 1rem;
+    padding-right: 1rem;
+    background-color: var(--cell-background-color);
+    color: var(--cell-color);
+}
+
+textarea#query-input {
+  height: 5em;
+  width: 50em;
+}
+
+button#query-button {
+  height: 5em;
+  vertical-align: top;
+}
+
+table#query-output {
+  float: none;
+  clear: both;
+}
+
+p#footer {
+  float: none;
+  clear: both;
+  vertical-align: bottom;
+}
@@ -0,0 +1,88 @@
+import { Component } from "react";
+import "./App.css";
+
+export class Home extends Component {
+  static displayName = Home.name;
+  static sparkdHost = "localhost";
+
+  render() {
+    let socket = null;
+    const wsUrl = `ws://localhost:5268/ws`;
+
+    function connectToSparkd() {
+      if (socket == null) {
+        socket = new WebSocket(wsUrl);
+      }
+      if (socket && socket.readyState === WebSocket.OPEN) {
+        return;
+      }
+
+      const output = document.getElementById("query-output");
+      socket.onopen = (event) => {
+        console.log(`Connected to ${wsUrl}`);
+      };
+
+      socket.onmessage = (event) => {
+        console.log(`Received message: ${event.data}`);
+        output.innerHTML = event.data;
+      };
+
+      socket.onerror = (error) => {
+        console.log(`Error on websocket ${wsUrl}: ${error}`);
+      };
+
+      socket.onclose = (event) => {
+        if (event.wasClean) {
+          const msg = `Connection to ${wsUrl} closed cleanly, code=${event.code}, reason=${event.reason}`;
+          console.log(msg);
+        } else {
+          const msg = `Connection to ${wsUrl} abruptly closed`;
+          console.log(msg);
+        }
+      };
+    }
+
+    function executeQuery() {
+      if (socket == null || !socket) {
+        connectToSparkd();
+      }
+      if (socket == null || !socket) {
+        console.log("Failed to connect to websocket server");
+        return;
+      }
+      if (socket.readyState === WebSocket.OPEN) {
+        const queryInput = document.getElementById("query-input");
+        const rpcReq = {
+          jsonrpc: "2.0",
+          method: "subscribe",
+          params: {
+            query: queryInput.value,
+          },
+          id: 1,
+        };
+        socket.send(JSON.stringify(rpcReq));
+      }
+    }
+
+    return (
+      <div>
+        <h1>Data Stream Query Analyzer</h1>
+        <p>Run queries against the BTS Cloud</p>
+        <div>
+          <textarea id="query-input" placeholder="Enter Query"></textarea>
+          <button id="query-button" onClick={executeQuery}>
+            Execute
+          </button>
+        </div>
+        <table id="query-output"></table>
+        <p id="footer">
+          The <code>ClientApp</code> subdirectory is a standard React
+          application based on the <code>create-react-app</code> template. If
+          you open a command prompt in that directory, you can run{" "}
+          <code>npm</code> commands such as <code>npm test</code> or{" "}
+          <code>npm install</code>.
+        </p>
+      </div>
+    );
+  }
+}
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>
@@ -0,0 +1,68 @@
+:root {
+  font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #242424;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+a {
+  font-weight: 500;
+  color: #646cff;
+  text-decoration: inherit;
+}
+a:hover {
+  color: #535bf2;
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+}
+
+h1 {
+  font-size: 3.2em;
+  line-height: 1.1;
+}
+
+button {
+  border-radius: 8px;
+  border: 1px solid transparent;
+  padding: 0.6em 1.2em;
+  font-size: 1em;
+  font-weight: 500;
+  font-family: inherit;
+  background-color: #1a1a1a;
+  cursor: pointer;
+  transition: border-color 0.25s;
+}
+button:hover {
+  border-color: #646cff;
+}
+button:focus,
+button:focus-visible {
+  outline: 4px auto -webkit-focus-ring-color;
+}
+
+@media (prefers-color-scheme: light) {
+  :root {
+    color: #213547;
+    background-color: #ffffff;
+  }
+  a:hover {
+    color: #747bff;
+  }
+  button {
+    background-color: #f9f9f9;
+  }
+}
@@ -0,0 +1,10 @@
+import React from 'react'
+import ReactDOM from 'react-dom/client'
+import {Home} from './App.jsx'
+import './index.css'
+
+ReactDOM.createRoot(document.getElementById('root')).render(
+  <React.StrictMode>
+    <Home />
+  </React.StrictMode>,
+)
@@ -0,0 +1,60 @@
+import { fileURLToPath, URL } from 'node:url';
+
+import { defineConfig } from 'vite';
+import plugin from '@vitejs/plugin-react';
+import fs from 'fs';
+import path from 'path';
+import child_process from 'child_process';
+
+const baseFolder =
+    process.env.APPDATA !== undefined && process.env.APPDATA !== ''
+        ? `${process.env.APPDATA}/ASP.NET/https`
+        : `${process.env.HOME}/.aspnet/https`;
+
+const certificateArg = process.argv.map(arg => arg.match(/--name=(?<value>.+)/i)).filter(Boolean)[0];
+const certificateName = certificateArg ? certificateArg.groups.value : "bts.datastreamwebapp.client";
+
+if (!certificateName) {
+    console.error('Invalid certificate name. Run this script in the context of an npm/yarn script or pass --name=<<app>> explicitly.')
+    process.exit(-1);
+}
+
+const certFilePath = path.join(baseFolder, `${certificateName}.pem`);
+const keyFilePath = path.join(baseFolder, `${certificateName}.key`);
+
+if (!fs.existsSync(certFilePath) || !fs.existsSync(keyFilePath)) {
+    if (0 !== child_process.spawnSync('dotnet', [
+        'dev-certs',
+        'https',
+        '--export-path',
+        certFilePath,
+        '--format',
+        'Pem',
+        '--no-password',
+    ], { stdio: 'inherit', }).status) {
+        throw new Error("Could not create certificate.");
+    }
+}
+
+// https://vitejs.dev/config/
+export default defineConfig({
+    plugins: [plugin()],
+    resolve: {
+        alias: {
+            '@': fileURLToPath(new URL('./src', import.meta.url))
+        }
+    },
+    server: {
+        proxy: {
+            '^/weatherforecast': {
+                target: 'https://localhost:7128/',
+                secure: false
+            }
+        },
+        port: 5173,
+        https: {
+            key: fs.readFileSync(keyFilePath),
+            cert: fs.readFileSync(certFilePath),
+        }
+    }
+})
@@ -0,0 +1,35 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <InvariantGlobalization>true</InvariantGlobalization>
+    <SpaRoot>..\Bts.DataStreamWebApp.Client</SpaRoot>
+    <SpaProxyLaunchCommand>npm run dev</SpaProxyLaunchCommand>
+    <SpaProxyServerUrl>https://localhost:5173</SpaProxyServerUrl>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="CommandLineParser" Version="2.9.1" />
+    <PackageReference Include="Microsoft.AspNetCore.SpaProxy">
+      <Version>8.*-*</Version>
+    </PackageReference>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Bts.DataStreamWebApp.Client\Bts.DataStreamWebApp.Client.esproj">
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+    <ProjectReference Include="..\DataStream\DataStream.csproj" />
+    <ProjectReference Include="..\SharedStreams\SharedStreams.csproj" />
+    <ProjectReference Include="..\..\client\spark_api\spark_api.csproj" />
+    <ProjectReference Include="..\..\client\spark_websocket\spark_websocket.csproj" />
+  </ItemGroup>
+
+  <!-- <ItemGroup>
+    <Content Update="wwwroot\alt-index.html" CopyToPublishDirectory="Never" />
+  </ItemGroup> -->
+</Project>
@@ -0,0 +1,6 @@
+@Bts.DataStreamWebApp.Server_HostAddress = http://localhost:5268
+
+GET {{Bts.DataStreamWebApp.Server_HostAddress}}/weatherforecast/
+Accept: application/json
+
+###
@@ -0,0 +1,107 @@
+namespace Bts.DataStreamWebApp.Server.Controllers;
+
+using BCG;
+
+using bts.api.core;
+using bts.websocket_core.json_rpc;
+
+using Bts.DataStreamExpressions;
+
+using Microsoft.AspNetCore.Mvc;
+
+using Spark.Core.Disposables;
+
+using System.Net.WebSockets;
+using System.Text;
+using System.Text.Json;
+
+[Route("/ws")]
+public class DataStreamSubscriptionController(ILogger<DataStreamSubscriptionController> logger) : ControllerBase {
+   readonly ILogger<DataStreamSubscriptionController> logger = logger;
+   IDisposable? streamSubscription;
+
+   [Route("/ws")]
+   public async Task Get() {
+      if (!HttpContext.WebSockets.IsWebSocketRequest) {
+         logger.LogError("Expected websocket request on path '{}'", HttpContext.Request.Path);
+         return;
+      }
+      Console.WriteLine("Establishing websocket connection...");
+      using var webSocket = await HttpContext.WebSockets.AcceptWebSocketAsync();
+      Console.WriteLine($"Websocket connection established.");
+      await runWebSocketServer(null, "bts", string.Empty, webSocket);
+   }
+
+   public static async Task Echo(WebSocket webSocket) {
+      var buffer = new byte[1024 * 4];
+      var receiveResult = await webSocket.ReceiveAsync(
+          new ArraySegment<byte>(buffer), CancellationToken.None);
+
+      while (!receiveResult.CloseStatus.HasValue) {
+         await webSocket.SendAsync(
+             new ArraySegment<byte>(buffer, 0, receiveResult.Count),
+             receiveResult.MessageType,
+             receiveResult.EndOfMessage,
+             CancellationToken.None);
+
+         receiveResult = await webSocket.ReceiveAsync(
+             new ArraySegment<byte>(buffer), CancellationToken.None);
+      }
+
+      await webSocket.CloseAsync(
+          receiveResult.CloseStatus.Value,
+          receiveResult.CloseStatusDescription,
+          CancellationToken.None);
+   }
+
+   async Task<int> runWebSocketServer(string? sparkd, string user, string password, WebSocket webSocket) {
+      var context = ServiceContext.create(sparkd);
+      await context.login(user, password);
+      var buffer = new byte[1024 * 4];
+      var receiveResult = await webSocket.ReceiveAsync(
+          new ArraySegment<byte>(buffer), CancellationToken.None);
+
+      try {
+         while (!receiveResult.CloseStatus.HasValue) {
+            receiveResult = await webSocket.ReceiveAsync(
+                new ArraySegment<byte>(buffer), CancellationToken.None);
+            var msg = Encoding.UTF8.GetString(buffer, 0, receiveResult.Count);
+            var rpcReq = JsonSerializer.Deserialize<JsonRpcRequest<DataStreamSubscription>>(msg);
+            var query = rpcReq?.Params?.Query ?? throw new InvalidOperationException(
+               "Failed to parse JsonRpcRequest.Params");
+            var exp = DataStreamExpressionsInterpreter.Evaluate(query);
+            if (exp is null) {
+               Console.WriteLine($"Invalid query expression: {query}.");
+               continue;
+            }
+            var vs = exp.getView(new Dictionary<string, StatementExpression>(0));
+            Disposable.dispose(ref streamSubscription);
+            vs.onChange += OnStreamChanged;
+            streamSubscription = Disposable.Create(() => vs.onChange -= OnStreamChanged);
+         }
+      } catch (Exception ex) {
+         Console.WriteLine($"Exception on WebsocketServer thread: {ex}");
+         return 1;
+      }
+
+      return 0;
+
+      async void OnStreamChanged(object newValue) {
+         if (newValue is not DataPacket dp) {
+            Console.WriteLine(
+               $"OnStreamChanged delegate expected DataPacket (actually received {newValue?.GetType()}.");
+            return;
+         }
+         Console.WriteLine("Received stream update.");
+         var added_rows_str = dp.addedRows.get_printed_rows(val => val.Length);
+         var msg = $"Received new rows:\n{added_rows_str}";
+         var encoded = Encoding.UTF8.GetBytes(msg);
+         var payload = new ArraySegment<byte>(encoded, 0, encoded.Length);
+         await webSocket.SendAsync(
+             payload,
+             receiveResult.MessageType,
+             receiveResult.EndOfMessage,
+             CancellationToken.None);
+      }
+   }
+}
@@ -0,0 +1,22 @@
+namespace Bts.DataStreamWebApp.Server.Controllers;
+using Microsoft.AspNetCore.Mvc;
+
+[ApiController]
+[Route("[controller]")]
+public class WeatherForecastController(ILogger<WeatherForecastController> logger) : ControllerBase {
+   static readonly string[] Summaries = [
+      "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
+   ];
+
+   readonly ILogger<WeatherForecastController> _logger = logger;
+
+   [HttpGet(Name = "GetWeatherForecast")]
+   public IEnumerable<WeatherForecast> Get() {
+      return Enumerable.Range(1, 5).Select(index => new WeatherForecast {
+         Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
+         TemperatureC = Random.Shared.Next(-20, 55),
+         Summary = Summaries[Random.Shared.Next(Summaries.Length)]
+      })
+      .ToArray();
+   }
+}
@@ -0,0 +1,8 @@
+namespace Bts.DataStreamWebApp.Server;
+
+using System.Text.Json.Serialization;
+
+public class DataStreamSubscription {
+   [JsonPropertyName("query")]
+   public string? Query { get; set; }
+}
Author	SHA1	Message	Date
John Colvin	c80374579e	fix build: Add a few includes, suppress some werrors Not sure how this slipped through the cracks, but I'm guessing the build broke when we upgraded the cpp compilers (to clang 17 and gcc 13). * Include <cstdint> in a few places * Suppress -Wstringop-overflow in sparkd-gcc-release build * Change const char * param to explicit std::string for proper type deduction in call to 'std::make_tuple'. For some reason, the gcc build was failing with an array-bounds werror (changing the arg fixed it).	2024-03-18 19:14:48 +00:00
John Colvin	81cc0892f2	fix build: Remove version suffix from RuntimeIdentifiers in csprojs They aren't required (nor supported) in dotnet 8	2024-03-18 15:13:01 -04:00
John Colvin	88714bb4b5	cleanup: Remove unnused token in BooleanExpression lex	2024-03-18 15:09:49 -04:00
John Colvin	f39f1784a8	cleanup: Remove 'global.json' file This config file is an artifact leftover from dotnet 6. I'm pretty sure it's useless now.	2024-03-18 15:09:49 -04:00
John Colvin	b7c8e72a07	feat: Add [incremental] MongoCollectionStream	2024-03-18 15:09:27 -04:00
John Colvin	eea4af1f9b	refactor: Impl IDictionary<int, IBlueRow> in BlueTable	2024-03-13 13:43:35 -05:00
John Colvin	6a244fee35	Normalize indentation in MongoDBStream	2024-03-13 13:43:35 -05:00
John Colvin	d6a744e5ab	Add echoDelay param to SimpleTCPServer	2024-03-13 13:43:35 -05:00
John Colvin	6f86b41f02	Add IObservable ViewStream wrapper	2024-03-13 13:43:35 -05:00
John Colvin	faaa0ba8f1	refactor: Rename WebsocketServerConfig proto pkg 'bts.websocket_core' This matches the namespace used in spark_websocket csproj. Eventually, I'd like to use conventional capitalization (TitleCase namespaces/types, etc.), but let's shelf that until we have enough time/energy to do a more comprehensive refactoring.	2024-03-13 13:43:35 -05:00
John Colvin	be97879db0	Add json facilities for DataStream websocket api	2024-03-13 13:43:34 -05:00
John Colvin	b54d839aaf	refactor: Add handy WebsocketExtensions * IsSocketStateOpen * IsClosedProperly	2024-03-13 13:43:34 -05:00
John Colvin	3af79a239a	feat: Add Bts.DataStream.Websocket/Server	2024-03-13 13:43:34 -05:00
John Colvin	d6d5e1d292	Add bones for Bts.DataStreamWebApp.Client	2024-03-13 13:43:33 -05:00
John Colvin	e92e5d5039	Add bones for Bts.DataStreamWebApp.Server	2024-03-13 13:43:33 -05:00
John Colvin	c47226f965	feat: Add JsonRpc types for websocket paradigm	2024-03-13 13:43:33 -05:00
John Colvin	f19f2c7a81	cleanup: Remove empty file (clearly added by accident)	2024-03-13 13:43:33 -05:00
John Colvin	b92fac9e55	Add more descriptive logs (via stdout) during initialization The C++ configure/initialize routines were particularly opaque	2024-03-13 13:43:33 -05:00
John Colvin	a1fe672271	fix: Fix improper 'OfType' linq cast Previously, animations were expressed through polymorphism (derived from the base class CellAnimation), but the new impl uses composition. This 'OfType' call was leftover from the polymorphism implementation, an attempt to linq cast elements of base class (CellAnimation) to BackgroundAnimation.	2024-03-13 13:43:33 -05:00
John Colvin	99d01fd25d	cleanup: Remove static service Locator class It relied on a static singleton 'ServiceContext'. Replace references with a properly scoped (i.e., non-static) ServiceContext	2024-03-13 13:43:32 -05:00
John Colvin	ae1a420d5f	refactor: Reduce code (simplify) in BTS.init Remove the 'args' parameter, since the cmd line can be obtained from Environment.GetCommandLine anyways	2024-03-13 13:43:32 -05:00
John Colvin	a162640b5e	Dispose connections in SimpleTCPServer.Dispose	2024-03-13 13:43:32 -05:00
John Colvin	61db677c2a	improvement: Polish clis in DataStreamSuite Namely, PubSubServer and DataStreamPublisher * Use CommandLineParser (nuget pkg) * Clean up csproj files a bit while we're at it	2024-03-13 13:43:32 -05:00
John Colvin	c1ebb1f7c5	editorconfig: Use standard c# capitalization rules * Use 'PascalCase' for public members (instead of 'snake_case') * Use 'camelCase' for private members (instead of '_snake_case')	2024-03-13 13:43:32 -05:00
John Colvin	96cb88505d	refactor: Change WebsocketServerConfig.port to uint32 It should always be a number between 1-65535	2024-03-13 13:43:32 -05:00
John Colvin	ed31ea8c67	refactor: Add WebsocketClient class Basically an ISubject (I/O) wrapper for IWebsocketConnectionGateway	2024-03-13 13:43:31 -05:00
John Colvin	82e9939343	refactor: Remove nullability constraint in GetValueOrDefault	2024-03-13 13:43:31 -05:00
John Colvin	8021cb49cc	refactor: Use events to avoid circular deps for ws sync/gateway	2024-03-13 13:43:31 -05:00
John Colvin	a7eb58311d	refactor: Let caller specify nullability of T in json parse fn	2024-03-13 13:43:31 -05:00
John Colvin	45ea54bdde	refactor: Reorganize NumericComparer, support all types Get rid of redundant UniversalNumericComparer while we're at it	2024-03-13 13:43:31 -05:00
John Colvin	0266d09e20	docker: Update and clean up Dockerfile * Upgrade dotnet 7 -> 8 * Upgrade clang (13, 15) -> 17 * Upgrade gcc (11, 12) -> 13 * Remove kitware release candidate apt repo (probably shouldn't have been added in the first place). * Install gdb for c++ debugging (VS Code debugger depends on this) * Use explicit release ubuntu:22.04 (not 'latest'). We don't want the distro to automatically upgrade one day, when 'latest' suddenly points to a new release. Upgrades like that need to be done deliberately. * Use more granular RUN cmds to reduce rebuild times. When a Dockerfile is built, the RUN cmds are executed in the order in which they were written (duh!). Checkpoints called "cache layers" are saved for each RUN cmd, so if the Dockerfile is later modified, the image can be rebuilt from the most recent layer that wasn't invalidated by the modifications.	2024-03-13 13:43:31 -05:00
John Colvin	b6fa2bd1c2	cleanup: Remove leftover legacy files	2024-03-13 13:43:30 -05:00
John Colvin	d43fd5bce7	build: Upgrade c# to net8.0	2024-03-13 13:43:30 -05:00
				`@@ -1 +0,0 @@`
				`PYTHONPATH=/workspaces/spark/build/sparkd-debug-clang/src/lib_python_interop;/workspaces/spark/src/lib_python_interop/python_interop_plugins;/workspaces/spark/tools/py`
				`@@ -0,0 +1 @@`
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