cfk/ansible/upstart/discovery.conf

Finbox's PaaS

description "Weave Docker Network Service"

start on started weave
stop on stopping weave

env WEAVEDISCOVERY_DOCKER_ARGS="--env SERVICE_NAME=discovery -h discovery.weave.local --dns 172.42.0.1 --dns 8.8.8.8 --dns 8.8.4.4"

pre-start script
  eval $(cfk-env)
  discovery leave || true
end script

script
  # Make sure that weave services are running

  WEAVE_RUNNING=$(docker ps --format "{{ .Names }}" | grep ^weave$ | wc -l)
  if [ "$WEAVE_RUNNING" -ne "1" ]; then
    echo "Error: Weave router is not running!"
    exit 1
  fi

  PROXY_RUNNING=$(docker ps --format "{{ .Names }}" | grep ^weaveproxy$ | wc -l)
  if [ "$PROXY_RUNNING" -ne "1" ]; then
    echo "Error: Weave proxy is not running!"
    exit 1
  fi

  eval $(cfk-env)
  IMAGE_VERSION=git-f4e79790b0a0 WEAVE_DISCOVERY_NAME=discovery \
    discovery join --advertise=${HOST_IP:?host ip required}:${DISCOVERY_PORT:-6783} \
    ${DISCOVERY_TOKEN:?discovery token required}
  sleep 10
  exec docker logs -f discovery
end script

post-start script
  DEAD_CONTAINERS=$(docker ps -a --filter "status=dead" --format "{{ .ID }}")
  if [ $(echo $DEAD_CONTAINERS | wc -w) -gt 0 ]; then $(echo $DEAD_CONTAINERS | xargs docker rm -f || true); fi
  EXITED_CONTAINERS=$(docker ps -a --filter "status=exited" --format "{{ .ID }}")
  if [ $(echo $EXITED_CONTAINERS | wc -w) -gt 0 ]; then $(echo $EXITED_CONTAINERS | xargs docker rm -f || true); fi

  while true; do
    sleep 30
    docker ps --format={{.Names}} | grep discovery && exit 0
    status discovery | grep respawn && exit 0
  done
end script

pre-stop script
  eval $(cfk-env)
  discovery leave || true
end script

post-stop script
  docker rm -f discovery || true
end script

respawn
respawn limit unlimited
kill timeout 10