# OpenTelemetry Collector configuration for Mattermost log collection

receivers:
  filelog/mattermost:
    include: [ /opt/mattermost/logs/mattermost.log ]
    start_at: beginning
    operators:
      - type: json_parser

processors:
  batch:
    send_batch_size: 10000
    timeout: 10s

  resource:
    attributes:
      - key: host.name
        value: "<HOSTNAME>"
        action: upsert
      - key: service.instance.id
        value: "<HOSTNAME>"
        action: upsert
      - key: service.name
        value: "<SERVICE_NAME>"
        action: upsert

  transform/severity:
    log_statements:
      - context: log
        statements:
          - set(log.severity_text, log.attributes["level"]) where log.attributes["level"] != nil
          - set(log.severity_number, 9) where log.attributes["level"] == "info"
          - set(log.severity_number, 13) where log.attributes["level"] == "warn" or log.attributes["level"] == "warning"
          - set(log.severity_number, 17) where log.attributes["level"] == "error"

exporters:
  otlp_http/loki:
    endpoint: "http://<LOKI_HOST>:3100/otlp"
    tls:
      insecure: true

service:
  telemetry:
    logs:
      level: "info"
  pipelines:
    logs/mattermost:
      receivers: [ filelog/mattermost ]
      processors: [ resource, transform/severity, batch ]
      exporters: [ otlp_http/loki ]