tfaour
1c67dd20d7
Root cause of "whiteboard stuck on old content, no errors anywhere": the Node sidecar had crashed at some point and, since it was just a bare backgrounded process with nothing supervising it, stayed dead permanently. Every refresh since then hit connection-refused, which get_or_refresh_whiteboard treats as a soft failure and falls back to the last successfully cached image -- so it looked exactly like a caching bug from the outside, silently, forever, with no error visible anywhere except a crash trace that had already scrolled out of the log buffer. Wrap it in a restart loop instead of a bare `&` so a future crash (a still-unknown third jsdom/Excalidraw edge case, most likely) is a few-second hiccup instead of a silent permanent outage.
25 lines
1.1 KiB
Bash
Executable File
25 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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# Starts render-service/ (whiteboard frame mode's Excalidraw-to-PNG
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# sidecar, see its own README) in the background, bound to 127.0.0.1 --
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# reachable from this container's Python process, never from outside it.
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# Then execs uvicorn as the foreground/PID 1 process so it receives
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# Docker's stop signal directly.
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#
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# Wrapped in a restart loop, not a bare `node ... &`: a bare background
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# process that crashes stays dead for good, with nothing to bring it
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# back -- turning any single render crash (a not-yet-found jsdom/
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# Excalidraw edge case, say) into a silent, permanent whiteboard outage
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# that looks exactly like "stuck showing stale content forever" from the
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# outside, since routers/common.py's get_or_refresh_whiteboard falls
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# back to the last good cached image on every failed refresh rather than
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# going blank. The 2s sleep just avoids a hot-crash-loop pegging a core
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# if something's wrong at every single startup.
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(
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while true; do
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node ./render-service/server.js
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echo "whiteboard render sidecar exited (code $?) -- restarting in 2s" >&2
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sleep 2
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done
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) &
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exec uvicorn app.main:app --host 0.0.0.0 --port 8420
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