docker-compose.yml

services:
  api:
    container_name: api
    build:
      context: .
      dockerfile: ./docker/Dockerfile
    volumes:
      - ./:/src
    ports:
      - "8080:8080"
    environment:
      - SERVICE_NAME=golang-template-api
      - PORT=8080
      - ENVIRONMENT=dev
      - LOG_LEVEL=debug
      - COLLECTOR_URL=collector:4317

      - PG_USER=postgres
      - PG_PASSWORD=password
      - PG_HOST=postgres
      - PG_PORT=5432
      - PG_NAME=postgres

      - WRITE_TIMEOUT=60
      - HANDLER_TIMEOUT=60
    depends_on:
      - postgres-init
      - collector
    command: go run ./cmd/api/...

  worker:
    container_name: worker
    build:
      context: .
      dockerfile: ./docker/Dockerfile
    volumes:
      - ./:/src
    environment:
      - PROJECT_ID=golang-template
      - ENVIRONMENT=dev
      - LOG_LEVEL=debug
      - COLLECTOR_URL=collector:4317

      - PG_USER=postgres
      - PG_PASSWORD=password
      - PG_HOST=postgres
      - PG_PORT=5432
      - PG_NAME=postgres

      # needed only for dev environment
      - PUBSUB_EMULATOR_HOST=pubsub-emulator:8085
    depends_on:
      - postgres-init
      - pubsub-emulator-init
      - collector
    command: go run cmd/worker/main.go

  postgres:
    container_name: postgres
    image: postgres:15.9
    ports:
      - "5432:5432"
    environment:
      - POSTGRES_PASSWORD=password

  postgres-init:
    container_name: postgres-init
    image: migrate/migrate:v4.18.1
    entrypoint: /bin/sh
    command: >
        -c "apk add --no-cache postgresql-client
        && until pg_isready -h postgres ; do sleep 5 ; done
        && migrate -path=/migrations -database postgresql://postgres:password@postgres:5432/postgres?sslmode=disable up"
    volumes:
      - ./migrations:/migrations
    depends_on:
      - postgres

  postgres-purge:
    container_name: postgres-purge
    image: migrate/migrate:4.18.1
    entrypoint: /bin/sh
    command: >
      -c "apk add --no-cache postgresql-client
      && until pg_isready -h postgres ; do sleep 5 ; done
      && migrate -path=/migrations -database postgresql://admin:password@postgres:5432/postgres?sslmode=disable down -all"
    volumes:
      - ./migrations:/migrations
    depends_on:
      - postgres

  pubsub-emulator:
    container_name: pubsub-emulator
    image: gcr.io/google.com/cloudsdktool/cloud-sdk:501.0.0-emulators
    ports:
      - "8085:8085"
    environment:
      - PUBSUB_PROJECT_ID=golang-template
    command: "gcloud beta emulators pubsub start --project=golang-template --host-port=0.0.0.0:8085"

  pubsub-emulator-init:
    container_name: pubsub-emulator-init
    image: alpine:3
    command:
      - /bin/sh
      - -c
      - |
        apk add --no-cache curl jq

        # wait until pubsub emulator starts
        while [[ "$$(curl -s -o /dev/null -w ''%{http_code}'' pubsub-emulator:8085)" != "200" ]]; do printf "emulator not ready, sleeping\n"; sleep 5; done

        # create output topic and subscription
        curl -s -X PUT http://pubsub-emulator:8085/v1/projects/golang-template/topics/sensor-data
        printf "\n"
        curl -s -X PUT http://pubsub-emulator:8085/v1/projects/golang-template/subscriptions/sensor-data-sub -H 'content-type: application/json' --data '{"topic":"projects/golang-template/topics/sensor-data"}'
        printf "\n"

        /src/scripts/pubsub-emulator-populate.sh /src/scripts/data/sensor-data.json pubsub-emulator sensor-data
    volumes:
      - ./:/src
    depends_on:
      - pubsub-emulator

  pubsub-emulator-purge:
    container_name: pubsub-emulator-purge
    image: alpine:3
    command:
      - /bin/sh
      - -c
      - |
        apk add --no-cache curl

        # wait until pubsub emulator starts
        while [[ "$$(curl -s -o /dev/null -w ''%{http_code}'' pubsub-emulator:8085)" != "200" ]]; do printf "emulator not ready, sleeping\n"; sleep 5; done

        # purge subscription
        now=$$(date +%Y-%m-%dT%H:%M:%SZ)
        curl -s -X POST http://pubsub-emulator:8085/v1/projects/golang-template/subscriptions/sensor-data-sub:seek -H 'content-type: application/json' --data '{"time":"'"$$now"'"}'
    depends_on:
      - pubsub-emulator

  collector:
    container_name: collector
    image: otel/opentelemetry-collector-contrib:0.113.0
    volumes:
      - ./configs/:/conf/
    command:
      - "--config=/conf/otel-collector.yml"
    ports:
      - "8889:8889"
      - "4317:4317"
      - "13133:13133"
    depends_on:
      - zipkin
      - prometheus

  zipkin:
    container_name: zipkin
    image: bitnami/zipkin:3.4.2
    ports:
      - "9411:9411"

  prometheus:
    container_name: prometheus
    image: bitnami/prometheus:2.55.1
    volumes:
      - ./configs/prometheus.yml:/opt/bitnami/prometheus/conf/prometheus.yml
    ports:
      - "9090:9090"