version: '3.8'

services:
  loki:
    image: grafana/loki:3.7.2
    command: -config.file=/etc/loki/local-config.yaml
    networks:
      - proxy
    configs:
      - source: loki_yml
        target: /etc/loki/local-config.yaml
    volumes:
      - loki-data:/loki
    # secrets:
    #   - loki_aws_key
    environment:
      - LOKI_ACCESS_KEY_ID
      - LOKI_AWS_ENDPOINT
      - LOKI_AWS_REGION
      - LOKI_BUCKET_NAMES
      - LOKI_RETENTION_PERIOD
      - LOKI_LOG_LEVEL
      - STACK_NAME
      - LOKI_STORAGE_FILESYSTEM
      - LOKI_STORAGE_S3
    healthcheck:
      test: ["CMD", "/usr/bin/loki", "-health"]
      interval: 10s
      timeout: 10s
      retries: 10
      start_period: 30s
    deploy:
      restart_policy:
        condition: on-failure
      labels:
        - "traefik.enable=true"
        - "traefik.swarm.network=proxy"
        - "traefik.http.services.${STACK_NAME}-loki.loadbalancer.server.port=3100"
        - "traefik.http.routers.${STACK_NAME}-loki.rule=Host(`loki.${DOMAIN}`)"
        - "traefik.http.routers.${STACK_NAME}-loki.entrypoints=web-secure"
        - "traefik.http.routers.${STACK_NAME}-loki.tls=true"
        - "traefik.http.routers.${STACK_NAME}-loki.tls.certresolver=${LETS_ENCRYPT_ENV}"
        - "traefik.http.routers.${STACK_NAME}-loki.middlewares=basicauth@file"
        - "prometheus.io/scrape=true"
        - "prometheus.io/port=3100"


configs:
  loki_yml:
    template_driver: golang
    name: ${STACK_NAME}_loki_yml_${LOKI_YML_VERSION}
    file: loki.yml.tmpl


volumes:
  loki-data:

# secrets:
#   loki_aws_key:
#     external: true
#     name: ${STACK_NAME}_loki_aws_key_${SECRET_LOKI_AWS_KEY_VERSION}