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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package nrb3
import (
"fmt"
"log"
"net/http"
"os"
newrelic "github.com/newrelic/go-agent"
"github.com/openzipkin/zipkin-go"
reporterhttp "github.com/openzipkin/zipkin-go/reporter/http"
)
func currentTxn() newrelic.Transaction {
return nil
}
func ExampleNewRoundTripper() {
// When defining the client, set the Transport to the NewRoundTripper. This
// will create ExternalSegments and add B3 headers for each request.
client := &http.Client{
Transport: NewRoundTripper(nil),
}
// Distributed Tracing must be enabled for this application.
txn := currentTxn()
req, err := http.NewRequest("GET", "http://example.com", nil)
if nil != err {
log.Fatalln(err)
}
// Be sure to add the transaction to the request context. This step is
// required.
req = newrelic.RequestWithTransactionContext(req, txn)
resp, err := client.Do(req)
if nil != err {
log.Fatalln(err)
}
defer resp.Body.Close()
fmt.Println(resp.StatusCode)
}
// This example demonstrates how to create a Zipkin reporter using the standard
// Zipkin http reporter
// (https://godoc.org/github.com/openzipkin/zipkin-go/reporter/http) to send
// Span data to New Relic. Follow this example when your application uses
// Zipkin for tracing (instead of the New Relic Go Agent) and you wish to send
// span data to the New Relic backend. The example assumes you have the
// environment variable NEW_RELIC_API_KEY set to your New Relic Insights Insert
// Key.
func Example_zipkinReporter() {
// import (
// reporterhttp "github.com/openzipkin/zipkin-go/reporter/http"
// )
reporter := reporterhttp.NewReporter(
"https://trace-api.newrelic.com/trace/v1",
reporterhttp.RequestCallback(func(req *http.Request) {
req.Header.Add("X-Insert-Key", os.Getenv("NEW_RELIC_API_KEY"))
req.Header.Add("Data-Format", "zipkin")
req.Header.Add("Data-Format-Version", "2")
}),
)
defer reporter.Close()
// use the reporter to create a new tracer
zipkin.NewTracer(reporter)
}
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