mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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ef5d2cbb06
* b3 propagator * fix as per new api. * add benchmark test.
158 lines
4.0 KiB
Go
158 lines
4.0 KiB
Go
// Copyright 2019, OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package propagation_test
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import (
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"context"
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"net/http"
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"testing"
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"github.com/google/go-cmp/cmp"
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"go.opentelemetry.io/api/trace"
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mocktrace "go.opentelemetry.io/internal/trace"
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"go.opentelemetry.io/propagation"
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)
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func TestExtractB3(t *testing.T) {
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testGroup := []struct {
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singleHeader bool
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name string
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tests []extractTest
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}{
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{
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singleHeader: false,
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name: "multiple headers",
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tests: extractMultipleHeaders,
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},
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{
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singleHeader: true,
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name: "single headers",
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tests: extractSingleHeader,
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},
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{
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singleHeader: false,
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name: "invalid multiple headers",
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tests: extractInvalidB3MultipleHeaders,
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},
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{
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singleHeader: true,
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name: "invalid single headers",
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tests: extractInvalidB3SingleHeader,
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},
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}
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trace.SetGlobalTracer(&mocktrace.MockTracer{})
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for _, tg := range testGroup {
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propagator := propagation.HttpB3Propagator(tg.singleHeader)
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for _, tt := range tg.tests {
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t.Run(tt.name, func(t *testing.T) {
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req, _ := http.NewRequest("GET", "http://example.com", nil)
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for h, v := range tt.headers {
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req.Header.Set(h, v)
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}
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ctx := context.Background()
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gotSc := propagator.Extract(ctx, req.Header)
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if diff := cmp.Diff(gotSc, tt.wantSc); diff != "" {
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t.Errorf("%s: %s: -got +want %s", tg.name, tt.name, diff)
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}
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})
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}
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}
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}
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func TestInjectB3(t *testing.T) {
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var id uint64
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testGroup := []struct {
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singleHeader bool
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name string
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tests []injectTest
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}{
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{
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singleHeader: false,
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name: "multiple headers",
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tests: injectB3MultipleHeader,
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},
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{
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singleHeader: true,
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name: "single headers",
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tests: injectB3SingleleHeader,
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},
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}
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mockTracer := &mocktrace.MockTracer{
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Sampled: false,
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StartSpanId: &id,
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}
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trace.SetGlobalTracer(mockTracer)
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for _, tg := range testGroup {
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id = 0
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propagator := propagation.HttpB3Propagator(tg.singleHeader)
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for _, tt := range tg.tests {
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t.Run(tt.name, func(t *testing.T) {
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req, _ := http.NewRequest("GET", "http://example.com", nil)
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ctx := context.Background()
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if tt.parentSc.IsValid() {
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ctx, _ = mockTracer.Start(ctx, "inject", trace.ChildOf(tt.parentSc))
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} else {
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ctx, _ = mockTracer.Start(ctx, "inject")
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}
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propagator.Inject(ctx, req.Header)
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for h, v := range tt.wantHeaders {
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got, want := req.Header.Get(h), v
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if diff := cmp.Diff(got, want); diff != "" {
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t.Errorf("%s: %s, header=%s: -got +want %s", tg.name, tt.name, h, diff)
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}
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}
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wantOk := false
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for _, h := range tt.doNotWantHeaders {
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v, gotOk := req.Header[h]
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if diff := cmp.Diff(gotOk, wantOk); diff != "" {
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t.Errorf("%s: %s, header=%s: -got +want %s, value=%s", tg.name, tt.name, h, diff, v)
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}
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}
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})
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}
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}
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}
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func TestHttpB3Propagator_GetAllKeys(t *testing.T) {
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propagator := propagation.HttpB3Propagator(false)
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want := []string{
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propagation.B3TraceIDHeader,
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propagation.B3SpanIDHeader,
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propagation.B3SampledHeader,
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}
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got := propagator.GetAllKeys()
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if diff := cmp.Diff(got, want); diff != "" {
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t.Errorf("GetAllKeys: -got +want %s", diff)
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}
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}
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func TestHttpB3PropagatorWithSingleHeader_GetAllKeys(t *testing.T) {
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propagator := propagation.HttpB3Propagator(true)
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want := []string{
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propagation.B3SingleHeader,
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}
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got := propagator.GetAllKeys()
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if diff := cmp.Diff(got, want); diff != "" {
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t.Errorf("GetAllKeys: -got +want %s", diff)
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}
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}
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