wehub-resource-sync
109 lines
4.2 KiB
Bash
Executable File
109 lines
4.2 KiB
Bash
Executable File
#!/bin/bash
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set -e
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cleanup() {
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kill $AGENT_PID $NEXTJS_PID $WATCHDOG_PID 2>/dev/null || true
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}
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trap cleanup EXIT
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# Disable Python stdout buffering so the FastAPI/uvicorn agent flushes
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# tracebacks and log lines immediately. Without this a silent crash during
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# module import can sit in Python's userspace buffer until the process
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# exits, by which point the container is already gone.
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export PYTHONUNBUFFERED=1
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echo "========================================="
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echo "[entrypoint] Starting showcase package: llamaindex"
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echo "[entrypoint] Time: $(date -u)"
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echo "[entrypoint] PORT=${PORT:-not set}"
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echo "[entrypoint] NODE_ENV=${NODE_ENV:-not set}"
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echo "========================================="
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if [ -z "$OPENAI_API_KEY" ]; then
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echo "[entrypoint] WARNING: OPENAI_API_KEY is not set! Agent will fail."
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else
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echo "[entrypoint] OPENAI_API_KEY: set (${#OPENAI_API_KEY} chars)"
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fi
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# Start agent backend on :8000 with log prefixing so its output is
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# distinguishable from Next.js in the Railway log stream.
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#
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# Belt-and-suspenders log flushing: `PYTHONUNBUFFERED=1` above exports the env
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# var, but a child process could in principle un-export or override it. The
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# `-u` flag to the Python interpreter forces unbuffered stdout/stderr at the
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# interpreter level and is not overridable by user code. Combined with the
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# `fflush()` inside the awk pipe below, this guarantees uvicorn request lines
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# and tracebacks reach Railway's log stream line-at-a-time rather than
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# block-buffered in pipe buffers.
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echo "[entrypoint] Starting Python agent on port 8000..."
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python -u -m uvicorn agent_server:app --host 0.0.0.0 --port 8000 &> >(awk '{print "[agent] " $0; fflush()}') &
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AGENT_PID=$!
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sleep 2
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if kill -0 $AGENT_PID 2>/dev/null; then
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echo "[entrypoint] Agent started (PID: $AGENT_PID)"
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else
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echo "[entrypoint] ERROR: Agent failed to start — exiting"
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exit 1
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fi
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echo "========================================="
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echo "[entrypoint] Starting Next.js frontend on port ${PORT:-10000}..."
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echo "========================================="
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PORT=${PORT:-10000}
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# Scope NODE_ENV=production to the Next.js invocation ONLY, not the whole
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# container environment. `ENV NODE_ENV=production` at the image level would
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# leak into every child process (Python agent, shell, healthchecks). `env`
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# prefix binds the value to this single exec.
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env NODE_ENV=production npx next start --port $PORT &> >(awk '{print "[nextjs] " $0; fflush()}') &
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NEXTJS_PID=$!
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echo "[entrypoint] Next.js started (PID: $NEXTJS_PID)"
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# Watchdog: Railway deploys of showcase packages have been observed to hit a
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# silent agent hang — the Python process stays alive (so `wait -n` never
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# fires and the container never restarts) but stops responding on :8000.
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# Poll the agent's /health endpoint every 30s; after 3 consecutive failures
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# (90s of unreachable agent), kill the agent process so `wait -n` returns
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# and Railway restarts the container. We kill the agent (not the whole
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# script) first so `set -e` + `wait -n; exit $?` handles the restart
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# through the normal path rather than a forced `exit` that would bypass
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# logging. Generalized from showcase/integrations/crewai-crews/entrypoint.sh
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# (PRs #4114 + #4115).
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(
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FAILS=0
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while sleep 30; do
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if ! kill -0 $AGENT_PID 2>/dev/null; then
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# Agent already dead — wait -n in the main shell will handle it.
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break
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fi
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if curl -fsS --max-time 5 http://127.0.0.1:8000/health > /dev/null 2>&1; then
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FAILS=0
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else
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FAILS=$((FAILS + 1))
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echo "[watchdog] Agent health probe failed (count=$FAILS)"
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if [ $FAILS -ge 3 ]; then
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echo "[watchdog] Agent unresponsive for ~90s — killing PID $AGENT_PID to trigger container restart"
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kill -9 $AGENT_PID 2>/dev/null || true
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break
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fi
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fi
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done
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) &
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WATCHDOG_PID=$!
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echo "[entrypoint] Watchdog started (PID: $WATCHDOG_PID)"
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echo "[entrypoint] All processes running. Waiting..."
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wait -n $AGENT_PID $NEXTJS_PID
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EXIT_CODE=$?
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if ! kill -0 $AGENT_PID 2>/dev/null; then
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echo "[entrypoint] Agent (PID: $AGENT_PID) exited with code $EXIT_CODE"
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elif ! kill -0 $NEXTJS_PID 2>/dev/null; then
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echo "[entrypoint] Next.js (PID: $NEXTJS_PID) exited with code $EXIT_CODE"
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else
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echo "[entrypoint] A process exited with code $EXIT_CODE"
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fi
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exit $EXIT_CODE
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