1573bf8954
- services/framecache/: new standalone container
- slot.h/slot.c: shm ring buffer (120 frames, FC_MAGIC header, atomic
write_cursor, POSIX semaphore per slot)
- registry.h/registry.c: in-memory slot registry + /dev/shm/framecache/
registry.json persistence
- framecache.c: HTTP API server (libmicrohttpd, port 7435)
POST /slots, GET /slots, GET /slots/:id, DELETE /slots/:id, GET /health
- fc_client.h/fc_client.c: consumer library — fc_consumer_open/read/close
with per-consumer cursor, timeout via sem_timedwait, automatic skip+count
when consumer falls behind writer by > ring_depth frames
- fc_test_consumer.c: dev utility to attach to any slot and print fps/stats
- CMakeLists.txt: framecache server + fc_client static lib + test consumer
- Dockerfile: builder + slim runtime stages
- docker-compose.worker.yml: add framecache service (profile: capture,
ipc: host, shm_size from FC_SHM_SIZE_GB env var, healthcheck)
- .env.example: document FC_SHM_SIZE_GB with per-node guidance
31 lines
1.2 KiB
Docker
31 lines
1.2 KiB
Docker
# ── Build stage ─────────────────────────────────────────────────────
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FROM debian:bookworm AS builder
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RUN apt-get update && apt-get install -y --no-install-recommends \
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build-essential cmake libmicrohttpd-dev \
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&& rm -rf /var/lib/apt/lists/*
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COPY . /src
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RUN cmake -S /src -B /build \
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-DCMAKE_BUILD_TYPE=Release \
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&& cmake --build /build -j"$(nproc)"
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# ── Runtime stage ────────────────────────────────────────────────────
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FROM debian:bookworm-slim
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RUN apt-get update && apt-get install -y --no-install-recommends \
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libmicrohttpd12 \
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&& rm -rf /var/lib/apt/lists/*
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COPY --from=builder /build/framecache /usr/local/bin/framecache
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COPY --from=builder /build/fc_test_consumer /usr/local/bin/fc_test_consumer 2>/dev/null || true
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# /dev/shm/framecache is created at runtime (tmpfs)
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RUN mkdir -p /dev/shm/framecache
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EXPOSE 7435
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HEALTHCHECK --interval=10s --timeout=3s --start-period=5s \
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CMD wget -qO- http://localhost:7435/health || exit 1
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CMD ["/usr/local/bin/framecache"]
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