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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package main
import (
"context"
"fmt"
"os"
"time"
newrelic "github.com/newrelic/go-agent"
"github.com/newrelic/go-agent/_integrations/logcontext/nrlogrusplugin"
"github.com/sirupsen/logrus"
)
func mustGetEnv(key string) string {
if val := os.Getenv(key); "" != val {
return val
}
panic(fmt.Sprintf("environment variable %s unset", key))
}
func doFunction2(txn newrelic.Transaction, e *logrus.Entry) {
defer newrelic.StartSegment(txn, "doFunction2").End()
e.Error("In doFunction2")
}
func doFunction1(txn newrelic.Transaction, e *logrus.Entry) {
defer newrelic.StartSegment(txn, "doFunction1").End()
e.Trace("In doFunction1")
doFunction2(txn, e)
}
func main() {
log := logrus.New()
// To enable New Relic log decoration, use the
// nrlogrusplugin.ContextFormatter{}
log.SetFormatter(nrlogrusplugin.ContextFormatter{})
log.SetLevel(logrus.TraceLevel)
log.Debug("Logger created")
cfg := newrelic.NewConfig("Logrus Log Decoration", mustGetEnv("NEW_RELIC_LICENSE_KEY"))
cfg.DistributedTracer.Enabled = true
cfg.CrossApplicationTracer.Enabled = false
app, err := newrelic.NewApplication(cfg)
if nil != err {
log.Panic("Failed to create application", err)
}
log.Debug("Application created, waiting for connection")
err = app.WaitForConnection(10 * time.Second)
if nil != err {
log.Panic("Failed to connect application", err)
}
log.Info("Application connected")
defer app.Shutdown(10 * time.Second)
log.Debug("Starting transaction now")
txn := app.StartTransaction("main", nil, nil)
// Add the transaction context to the logger. Only once this happens will
// the logs be properly decorated with all required fields.
e := log.WithContext(newrelic.NewContext(context.Background(), txn))
doFunction1(txn, e)
e.Info("Ending transaction")
txn.End()
}
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