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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package nrb3
import (
"net/http"
"testing"
newrelic "github.com/newrelic/go-agent"
"github.com/newrelic/go-agent/internal"
"github.com/newrelic/go-agent/internal/integrationsupport"
)
func TestNewRoundTripperNil(t *testing.T) {
rt := NewRoundTripper(nil)
if orig := rt.(*b3Transport).original; orig != http.DefaultTransport {
t.Error("original is not as expected:", orig)
}
}
type roundTripperFn func(*http.Request) (*http.Response, error)
func (fn roundTripperFn) RoundTrip(r *http.Request) (*http.Response, error) { return fn(r) }
func TestRoundTripperNoTxn(t *testing.T) {
app := integrationsupport.NewTestApp(nil, integrationsupport.DTEnabledCfgFn)
txn := app.StartTransaction("test", nil, nil)
var count int
rt := NewRoundTripper(roundTripperFn(func(req *http.Request) (*http.Response, error) {
count++
return &http.Response{
StatusCode: 200,
}, nil
}))
client := &http.Client{Transport: rt}
req, err := http.NewRequest("GET", "http://example.com", nil)
if nil != err {
t.Fatal(err)
}
_, err = client.Do(req)
if nil != err {
t.Fatal(err)
}
txn.End()
if count != 1 {
t.Error("incorrect call count to RoundTripper:", count)
}
app.ExpectMetrics(t, []internal.WantMetric{
{Name: "DurationByCaller/Unknown/Unknown/Unknown/Unknown/all", Scope: "", Forced: false, Data: nil},
{Name: "DurationByCaller/Unknown/Unknown/Unknown/Unknown/allOther", Scope: "", Forced: false, Data: nil},
{Name: "OtherTransaction/Go/test", Scope: "", Forced: true, Data: nil},
{Name: "OtherTransaction/all", Scope: "", Forced: true, Data: nil},
{Name: "OtherTransactionTotalTime", Scope: "", Forced: true, Data: nil},
{Name: "OtherTransactionTotalTime/Go/test", Scope: "", Forced: false, Data: nil},
})
}
func TestRoundTripperWithTxnSampled(t *testing.T) {
replyfn := func(reply *internal.ConnectReply) {
reply.AdaptiveSampler = internal.SampleEverything{}
reply.TraceIDGenerator = internal.NewTraceIDGenerator(123)
}
app := integrationsupport.NewTestApp(replyfn, integrationsupport.DTEnabledCfgFn)
txn := app.StartTransaction("test", nil, nil)
var count int
var sent *http.Request
rt := NewRoundTripper(roundTripperFn(func(req *http.Request) (*http.Response, error) {
count++
sent = req
return &http.Response{
StatusCode: 200,
}, nil
}))
rt.(*b3Transport).idGen = internal.NewTraceIDGenerator(456)
client := &http.Client{Transport: rt}
req, err := http.NewRequest("GET", "http://example.com", nil)
if nil != err {
t.Fatal(err)
}
req = newrelic.RequestWithTransactionContext(req, txn)
_, err = client.Do(req)
if nil != err {
t.Fatal(err)
}
txn.End()
if count != 1 {
t.Error("incorrect call count to RoundTripper:", count)
}
// original request is not modified
if hdr := req.Header.Get("X-B3-TraceId"); hdr != "" {
t.Error("original request was modified, X-B3-TraceId header set:", hdr)
}
// b3 headers added
if hdr := sent.Header.Get("X-B3-TraceId"); hdr != "94d1331706b6a2b3" {
t.Error("unexpected value for X-B3-TraceId header:", hdr)
}
if hdr := sent.Header.Get("X-B3-SpanId"); hdr != "5a4f2d1b7f0cf06d" {
t.Error("unexpected value for X-B3-SpanId header:", hdr)
}
if hdr := sent.Header.Get("X-B3-ParentSpanId"); hdr != "3ffe00369da8a3b6" {
t.Error("unexpected value for X-B3-ParentSpanId header:", hdr)
}
if hdr := sent.Header.Get("X-B3-Sampled"); hdr != "1" {
t.Error("unexpected value for X-B3-Sampled header:", hdr)
}
app.ExpectMetrics(t, []internal.WantMetric{
{Name: "DurationByCaller/Unknown/Unknown/Unknown/Unknown/all", Scope: "", Forced: false, Data: nil},
{Name: "DurationByCaller/Unknown/Unknown/Unknown/Unknown/allOther", Scope: "", Forced: false, Data: nil},
{Name: "External/all", Scope: "", Forced: true, Data: nil},
{Name: "External/allOther", Scope: "", Forced: true, Data: nil},
{Name: "External/example.com/all", Scope: "", Forced: false, Data: nil},
{Name: "External/example.com/http/GET", Scope: "OtherTransaction/Go/test", Forced: false, Data: nil},
{Name: "OtherTransaction/Go/test", Scope: "", Forced: true, Data: nil},
{Name: "OtherTransaction/all", Scope: "", Forced: true, Data: nil},
{Name: "OtherTransactionTotalTime", Scope: "", Forced: true, Data: nil},
{Name: "OtherTransactionTotalTime/Go/test", Scope: "", Forced: false, Data: nil},
})
}
func TestRoundTripperWithTxnNotSampled(t *testing.T) {
replyfn := func(reply *internal.ConnectReply) {
reply.AdaptiveSampler = internal.SampleNothing{}
}
app := integrationsupport.NewTestApp(replyfn, integrationsupport.DTEnabledCfgFn)
txn := app.StartTransaction("test", nil, nil)
var sent *http.Request
rt := NewRoundTripper(roundTripperFn(func(req *http.Request) (*http.Response, error) {
sent = req
return &http.Response{
StatusCode: 200,
}, nil
}))
client := &http.Client{Transport: rt}
req, err := http.NewRequest("GET", "http://example.com", nil)
if nil != err {
t.Fatal(err)
}
req = newrelic.RequestWithTransactionContext(req, txn)
_, err = client.Do(req)
if nil != err {
t.Fatal(err)
}
txn.End()
if hdr := sent.Header.Get("X-B3-Sampled"); hdr != "0" {
t.Error("unexpected value for X-B3-Sampled header:", hdr)
}
}
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