docker-compose.yaml

x-logging: &default-logging
  driver: loki
  options:
    loki-url: 'http://localhost:3100/api/prom/push'
    loki-pipeline-stages: |
      - multiline:
          firstline: '^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.\d{3}'
          max_wait_time: 3s
      - regex:
          expression: '^(?P<date>\d{4}-\d{2}-\d{2}) (?P<time>\d{2}:\d{2}:\d{2}.\d{3}) (?P<message>(?s:.*))$$'

version: "3.4"

services:

  # Infrastructure

  loki:
    image: grafana/loki:3.0.0
    command: -config.file=/etc/loki/local-config.yaml
    ports:
      - "3100:3100"

  prometheus:
    image: prom/prometheus:v2.51.2
    ports:
      - "9090:9090"
    volumes:
      - ./etc/prometheus:/workspace
    command:
      - --config.file=/workspace/prometheus.yml
      - --enable-feature=exemplar-storage
    depends_on:
      - loki
    logging: *default-logging

  tempo:
    image: grafana/tempo:2.4.1
    command: [ "--target=all", "--storage.trace.backend=local", "--storage.trace.local.path=/var/tempo", "--auth.enabled=false" ]
    ports:
      - "14250:14250"
      - "4317:4317"
    depends_on:
      - loki
    logging: *default-logging

  grafana:
    image: grafana/grafana:10.4.2
    ports:
      - "3000:3000"
    volumes:
      - ./etc/grafana/:/etc/grafana/provisioning/datasources
      - ./etc/dashboards.yaml:/etc/grafana/provisioning/dashboards/dashboards.yaml
      - ./etc/dashboards:/etc/grafana/dashboards
    depends_on:
      - loki
      - prometheus
    logging: *default-logging

  # Applications

  app-a:
    # build: ./app/
    image: ghcr.io/blueswen/spring-boot-observability/app:latest
    environment:
      - TARGET_ONE_HOST=app-b
      - TARGET_TWO_HOST=app-c
      - OTEL_EXPORTER_OTLP_ENDPOINT=http://tempo:4317 # send traces to Tempo
      - OTEL_SERVICE_NAME=app-a # service name for Span
      - OTEL_RESOURCE_ATTRIBUTES=compose_service=app-a # add custom resource attribute to Span for Grafana Trace to Logs feature
      - OTEL_METRICS_EXPORTER=none # disable metrics exporter
      - MANAGEMENT_METRICS_TAGS_APPLICATION=app-a # override default value of management.metrics.tags.application in app/src/main/resources/application.properties
    ports:
      - "8080:8080"
    logging: *default-logging

  app-b:
    # build: ./app/
    image: ghcr.io/blueswen/spring-boot-observability/app:latest
    environment:
      - TARGET_ONE_HOST=app-b
      - TARGET_TWO_HOST=app-c
      - OTEL_EXPORTER_OTLP_ENDPOINT=http://tempo:4317
      - OTEL_SERVICE_NAME=app-b
      - OTEL_RESOURCE_ATTRIBUTES=compose_service=app-b
      - OTEL_METRICS_EXPORTER=none
      - MANAGEMENT_METRICS_TAGS_APPLICATION=app-b
    ports:
      - "8081:8080"
    logging: *default-logging

  app-c:
    # build: ./app/
    image: ghcr.io/blueswen/spring-boot-observability/app:latest
    environment:
      - TARGET_ONE_HOST=app-b
      - TARGET_TWO_HOST=app-c
      - OTEL_EXPORTER_OTLP_ENDPOINT=http://tempo:4317
      - OTEL_SERVICE_NAME=app-c
      - OTEL_RESOURCE_ATTRIBUTES=compose_service=app-c
      - OTEL_METRICS_EXPORTER=none
      - MANAGEMENT_METRICS_TAGS_APPLICATION=app-c
    ports:
      - "8082:8080"
    logging: *default-logging

  postgres:
    image: postgres:16.2
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_DB=postgres
    ports:
      - "5432:5432"
    logging: *default-logging

  redis:
    image: redis:7.2.4
    ports:
      - "6379:6379"
    logging: *default-logging