docker-compose.yml

version: '2.4'

networks: {}

volumes:
  resin-data: {}

x-common: &common
  tty: true
  restart: unless-stopped

services:
#   iserve:
#     image: arm32v6/traefik@sha256:10b691b83d9ed9bac5ac8d7c37c79398bfec79e73c5b7882a6d6da069d3eb277
#     <<: *common
#     command:
#       - --accesslog=true
#       - --entrypoints.web.address=:80
#       - --log.level=DEBUG
#       - --ping=true
#       - --providers.docker.endpoint=unix:///var/run/balena.sock
#       - --providers.docker.exposedbydefault=false
#       - --providers.docker=true
#     healthcheck:
#       test: wget -qO /dev/null localhost:8080/ping
#       interval: 60s
#       timeout: 15s
#       retries: 3
#       start_period: 30s
#     ports:
#       - "80:80"
#     labels:
#       io.balena.features.balena-socket: '1'

  # https://github.com/mcuadros/ofelia
  iwait:
    build:
      context: iwait
    <<: *common
    restart: always
    depends_on:
      - ifeed
    entrypoint:
      - /bin/sh
      - -c
    command: /usr/src/app/main.sh
    healthcheck:
      test: grep -q "$(docker ps -q --filter 'name=ifeed*' --format '{{.Names}}')" /etc/ofelia.conf && ofelia validate && pgrep ofelia
      interval: 60s
      timeout: 15s
      retries: 3
      start_period: 30s
    labels:
      io.balena.features.balena-socket: '1'

  ifeed:
    build:
      context: ifeed
    <<: *common
    restart: always
    entrypoint:
      - /bin/bash
      - -c
    command:
      - |
        set -axe

        function cleanup() {
            sleep infinity
        }
        trap cleanup EXIT

        exec ./main.py

    volumes:
      - 'resin-data:/balena'
    healthcheck:
      test: pgrep python3
      interval: 60s
      timeout: 15s
      retries: 3
      start_period: 30s

    devices:
      - /dev/gpiomem
      - /dev/mem
    labels:
      io.balena.features.sysfs: '1'
      io.balena.update.strategy: 'kill-then-download'
      io.resin.features.kernel-modules: '1'

#   istream:
#     build:
#       context: istream
#     <<: *common
#     entrypoint:
#       - /bin/bash
#       - -c
#     command:
#       - |
#         set -axe
# 
#         function cleanup() {
#             rm -f "${ISTREAM_STILL}"
#             sleep infinity
#         }
#         trap cleanup EXIT
# 
#         ISTREAM_H264_PROFILE=${H264_PROFILE:-main}
#         ISTREAM_VIDEO_WIDTH=${VIDEO_WIDTH:-320}
#         ISTREAM_VIDEO_HEIGHT=${VIDEO_HEIGHT:-192}
#         ISTREAM_VIDEO_FRAMERATE=${VIDEO_FRAMERATE:-15}
#         ISTREAM_VIDEO_BITRATE=${VIDEO_BITRATE:-250000}
#         ISTREAM_KEYFRAME_RATE=${KEYFRAME_RATE:-30}
#         ISTREAM_AUDIO_SAMPLE_RATE=${ISTREAM_AUDIO_SAMPLE_RATE:-44100}  # audio not used
#         ISTREAM_IMAGE_HEIGHT=${ISTREAM_IMAGE_HEIGHT:-1280}
#         ISTREAM_IMAGE_WIDTH=${ISTREAM_IMAGE_WIDTH:-960}
#         ISTREAM_IMAGE_ROTATE=${ISTREAM_IMAGE_ROTATE:-90}
#         ISTREAM_IMAGE_ANNOTATE=${ISTREAM_IMAGE_ANNOTATE:-1024}
# 
#         # https://medium.com/@allanlei/streaming-your-raspberrypi-camera-6ad02edcaae7
#         if [[ -n "$ISTREAM_RTMP_URL" ]]; then
#             exec raspivid -n -t 0 -fl -hf -o - \
#               -w "${ISTREAM_VIDEO_WIDTH}" \
#               -h "${ISTREAM_VIDEO_HEIGHT}" \
#               -fps "${ISTREAM_VIDEO_FRAMERATE}" \
#               -b "${ISTREAM_VIDEO_BITRATE}" \
#               -pf "${ISTREAM_H264_PROFILE}" \
#               -g "${ISTREAM_KEYFRAME_RATE}" \
#               | ffmpeg \
#               -f lavfi \
#               -i "anullsrc=channel_layout=stereo:sample_rate=${ISTREAM_AUDIO_SAMPLE_RATE}" \
#               -i pipe:0 \
#               -c:v copy \
#               -c:a aac \
#               -strict experimental \
#               -f flv "${ISTREAM_RTMP_URL}"
# 
#         # capture and serve stills
#         elif [[ -n "$ISTREAM_STILL" ]]; then
#             webroot="$(dirname "${ISTREAM_STILL}")"
#             test -f "${webroot}/favicon.ico" || ln -s /root/favicon.ico ${webroot}/favicon.ico
#             nweb 80 "${webroot}"
#             pgrep nweb
#             raspistill --settings
#             raspistill --verbose --nopreview \
#               --annotate "${ISTREAM_IMAGE_ANNOTATE}" \
#               --height "${ISTREAM_IMAGE_HEIGHT}" \
#               --output "${ISTREAM_STILL}" \
#               --rotation "${ISTREAM_IMAGE_ROTATE}" \
#               --signal \
#               --timeout 0 \
#               --width "${ISTREAM_IMAGE_WIDTH}"
#         else
#             false
#         fi
# 
#     healthcheck:
#       test: pgrep raspivid || pgrep raspistill
#       interval: 60s
#       timeout: 15s
#       retries: 3
#       start_period: 30s
#     devices:
#       - /dev/vchiq
#       - /dev/video0
#       - /dev/dma_heap
#       - /dev/vcsm-cma
#     labels:
#       io.balena.features.sysfs: '1'
#       io.balena.update.strategy: 'kill-then-download'
#       io.resin.features.kernel-modules: '1'
#       traefik.enable: 'true'
#       traefik.http.routers.istream.entrypoints: 'web'
#       # https://community.traefik.io/t/how-to-match-for-file-extension-at-end-of-path/16838/3
#       traefik.http.routers.istream.rule: 'Path(`/{path:(?i:.*\.(jpeg|jpg|png|json|ico)$)}`)'
#       traefik.http.services.istream.loadbalancer.server.port: '80'
# 
#   iwatch:
#     build:
#       context: iwatch
#     <<: *common
#     entrypoint:
#       - /bin/bash
#       - -c
#     command:
#       - |
#         set -axe
# 
#         function cleanup() {
#             sleep infinity
#         }
#         trap cleanup EXIT
# 
#         # https://funprojects.blog/2021/04/11/a-web-server-in-1-line-of-bash/
#         (while true; do
#             json="$(docker ps --all --no-trunc --format="{{json .}}" | jq -rc '{Names, Status, State}' | jq -cs)"
#             echo -e "HTTP/1.1 200 OK\n\n${json}" \
#               | nc -l -k -p 8080 -q 3
#         done) &
# 
#         if [[ -z "$IWATCH_REDIRECT_URL" ]] && [[ -n "$ISTREAM_STILL" ]]; then
#             IWATCH_REDIRECT_URL="/$(basename "${ISTREAM_STILL}")"
#         fi
# 
#         # serve static HTML
#         if [[ -n "$IWATCH_STATIC_HTML" ]]; then
#             echo "${IWATCH_STATIC_HTML}" > iwatch.html
#             while true; do
#                 echo -e 'HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n' \
#                   | cat - iwatch.html | nc -l -k -p 80 -q 1
#             done
# 
#         # .. or serve HTTP redirect
#         elif [[ -n "$IWATCH_REDIRECT_URL" ]]; then
#             while true; do
#                 echo -e "HTTP/1.1 302 Found\r\nLocation: ${IWATCH_REDIRECT_URL}\r\nConnection: close\r\n\r\n" \
#                   | nc -l -k -p 80 -q 1
#             done
# 
#         else
#             false
#         fi
# 
#     healthcheck:
#       test: pgrep nc
#       interval: 60s
#       timeout: 15s
#       retries: 3
#       start_period: 30s
#     labels:
#       io.balena.features.balena-socket: '1'
#       io.balena.update.strategy: 'kill-then-download'
#       traefik.enable: 'true'
#       traefik.http.routers.iwatch1.entrypoints: 'web'
#       traefik.http.routers.iwatch1.service: 'iwatch1'
#       traefik.http.routers.iwatch1.rule: 'Path(`/`)'
#       traefik.http.services.iwatch1.loadbalancer.server.port: '80'
#       traefik.http.routers.iwatch2.entrypoints: 'web'
#       traefik.http.routers.iwatch2.service: 'iwatch2'
#       traefik.http.routers.iwatch2.rule: 'Path(`/health`)'
#       traefik.http.services.iwatch2.loadbalancer.server.port: '8080'