the library supports: logging, metrics and tracing.

• logger is composite of console, file and opentelemetry,
  • file logger is configured of rolling logs that keeps most recent 10 files of 10MB each.
  • opentelemetry logger is configured to send logs to jaeger, it's integrated with span trace_id.
• metrics is configured to send metrics to either prometheus or jaeger collector.
  • when sent to prometheus, prometheus endpoint is read from its registry.
  • when sent to jaeger collector, it then forwards to prometheus via its exporter.
• tracing is configured to send traces to jaeger collector.

How to use

1. Startup jaeger collector, prometheus and grafana

docker-compose up -d

2. Modify config file to point to correct endpoints

# config.yaml
logger:
  file:
    path: ./logs
  opentelemetry:
    endpoint: http://localhost:14268/api/traces
metrics:
    prometheus:
        endpoint: http://localhost:9090
    jaeger:
        endpoint: http://localhost:14250
tracing:
    jaeger:
        endpoint: http://localhost:14268/api/traces

3. Run the example

go run main.go