Docs: Add Task SDK, Go and Java SDK execution architecture diagrams#69750
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jason810496
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Thanks! It's really a cool one to showcase the current architecture for Lang-SDK, no major error to fix, and we can improve in the follow-up.
Add graphviz-generated diagrams to the architecture overview showing how a task actually runs across the different SDKs, and embed them in core-concepts/overview.rst: - Python Task SDK: supervised (two native OS processes over a msgpack socket) vs native/in-process paths, plus a numbered message-flow sequence. - Go SDK: standalone edge worker pulling from the Edge API, task talks to the Execution API directly. - Java (JVM) SDK: Coordinator layer reusing the Python Supervisor, driving a JVM subprocess over loopback TCP, with an architecture diagram and a numbered execution-workflow sequence.
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The message-flow diagrams added earlier in this PR drew every step on a single vertical spine, so the request/response round-trips between the task runtime and the Supervisor were hard to follow. Responding to review feedback, redraw them as true sequence diagrams — one lifeline per participant with the Supervisor in the middle — so each round-trip reads as arrows going back and forth between neighboring lifelines, with straight message arrows and margined labels.
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Adds graphviz-generated diagrams to the architecture overview
(core-concepts/overview.rst) explaining how a task actually runs across
Airflow's SDKs, in a new "Task execution architecture" section:
msgpack socket) vs the native in-process path (dag.test()), plus a numbered
message-flow sequence.
the compiled bundle as a go-plugin gRPC subprocess and calling the Execution
API directly.
-> _JavaActivitySubprocess) reusing the Python Supervisor, driving a JVM
subprocess over loopback TCP, with an architecture diagram and a numbered
execution-workflow sequence.
All diagrams are generated by the existing generate-airflow-diagrams prek hook
(committed as .py + .png + .md5sum).
Was generative AI tooling used to co-author this PR?
Generated-by: Claude Code (Opus 4.8) following the guidelines