Core — dev/core

# Core config for `make dev-up` (examples/docker-compose.yaml). It is the
# GitHub flow from ../config.yaml with a second delivery and the replay
# service switched on:
#
#   GitHub ──▶ hookway ──▶ RabbitMQ (queue github-webhooks)
#                     └──▶ notify-sink (an HTTP endpoint)
#
# The flow uses skip_failed, so when notify-sink is down RabbitMQ still gets
# the event and GitHub still gets its 202. Core hands the missed delivery to
# the replay service, where it waits for you to retry it.
# docs/development/local-development.md walks through it.
server:
  addr: ":8080"
  max_body_bytes: 1048576

metrics:
  enabled: true
  path: /metrics
  addr: ":9090"

replay:
  url: "http://replay:8080"
  capture_token: "${REPLAY_CAPTURE_TOKEN}"
  control:
    # Only the replay service calls this; the compose file keeps it off the
    # host.
    addr: ":9092"
    token: "${REPLAY_CONTROL_TOKEN}"

destinations:
  primary:
    type: "rabbitmq"
    rabbitmq:
      url: "${RABBITMQ_URL}"
      exchange: "hookway.webhooks"
      exchange_type: "direct"
      durable: true
      publish_timeout: "5s"
      declare_queues: true
  notify:
    type: webhook
    webhook:
      url: "http://notify-sink:8080/github"
      delivery_mode: sync

flows:
  github_events:
    # One destination failing does not fail the request: the other still
    # delivers, and the failure is kept for replay.
    delivery_failure_policy: skip_failed
    nodes:
      - {id: in, type: http_trigger, description: "GitHub posts webhook deliveries here.", path: /webhooks/github, methods: [POST]}
      - {id: body, type: read_body, description: "Reads the raw body, rejecting anything over 1 MiB.", max_bytes: 1048576}
      - {id: auth, type: auth, description: "Verifies the GitHub HMAC signature over the raw body.", scheme: hmac_sha256_hex, secret: "${GITHUB_WEBHOOK_SECRET}", signature_header: X-Hub-Signature-256}
      - {id: env, type: envelope, description: "Builds the JSON event envelope consumers receive.", body_format: json}
      - {id: out, type: publish, description: "Publishes to the RabbitMQ exchange, declaring the queue.", destination: primary, target: github-webhooks, create: true}
      - {id: notify, type: publish, description: "Posts the envelope to the notification endpoint.", destination: notify, target: github}
    edges: [in>body, body>auth, auth>env, env>out, env>notify]