logger

logger

Supported log format:

    json(default), txt.

log level :

    debug, info, warn, error 

above values can be set using environment variable :

    LOGGING_LEVEL & LOGGING_FORMAT

Log with traceable context

// Either create a span from existing request context or create a fresh one
package example

import (
	"context"
	"logger/logging"
	"github.com/opentracing/opentracing-go"
)

var log logging.Logger

func myOperation(parentCtx context.Context) {
	span, ctx := opentracing.StartSpanFromContext(parentCtx, "myOperation")
	defer span.Finish()

	log.Info(ctx, "Message")
	
}

####output : {"is_sampled":"false","level":"info","logger":"logging_test.go:70","message":"Message","parent_id":"0","span_id":"54b168451e541edd","timestamp":"2020-12-11T12:02:00.370+02:00","trace_id":"54b168451e541edd"}

####Example execution

Ref :

- https://opentracing.io/guides/golang/quick-start/
- https://github.com/jaegertracing/jaeger-client-go
- https://www.sentinelone.com/blog/jaeger-tracing-tutorial/