server:
  http_listen_port: 9080
  grpc_listen_port: 0

positions:
  filename: /tmp/positions.yaml

clients:
  - url: ${LOKI_URL}
    bearer_token: ${OBS_AUTH_TOKEN}

scrape_configs:
  # ============================================
  # chat-deploy 业务层日志采集
  # ============================================
  - job_name: chat-deploy-logs
    static_configs:
      - targets:
          - localhost
        labels:
          job: chat-deploy-logs
          project: ${OBS_PROJECT}
          service: ${OBS_SERVICE}
          log_layer: business
          __path__: /var/lib/docker/containers/*/*-json.log

    pipeline_stages:
      # 解析 Docker JSON 日志格式
      - docker: {}

      # 从文件路径提取容器 ID
      - regex:
          source: filename
          expression: '/var/lib/docker/containers/(?P<container_id>[0-9a-f]{12})[0-9a-f]*/'
      - labels:
          container_id:

      # ============================================
      # 过滤规则：只丢弃基础设施层日志
      # 保留 chat-deploy 业务层日志（包括Go服务的caller日志）
      # ============================================
      
      # 1. 丢弃 promtail/prometheus/grafana 等基础设施组件的内部日志
      - drop:
          expression: 'caller=.*(promtail|prometheus|grafana|loki|exporter).*\.go:[0-9]+'
          drop_counter_reason: infra_go_internal_log

      # 2. 丢弃基础设施组件日志（prometheus/grafana/exporter等）
      - drop:
          expression: '(component=|target=|scrape_pool=|instance=.*exporter)'
          drop_counter_reason: infrastructure_component

      # 3. 丢弃 Docker 服务发现和 API 错误日志
      - drop:
          expression: '(docker_discovery|Unable to refresh target groups|client version.*is too old|Minimum supported API version)'
          drop_counter_reason: docker_api_error

      # 4. 丢弃文件监控事件日志（promtail 内部）
      - drop:
          expression: '(file watcher event|filetargetmanager|fsnotify)'
          drop_counter_reason: file_watcher