mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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a485d0ec64
* Update License header for all source files - Add Apache 2.0 header to source files that did not have one. - Update all existing headers dated to 2019 to be 2020 - Remove comma from License header to comply with the Apache 2.0 guidelines. * Update Copyright notice Use the standard Copyright notices outlined by the [CNCF](https://github.com/cncf/foundation/blob/master/copyright-notices.md#copyright-notices)
252 lines
6.8 KiB
Go
252 lines
6.8 KiB
Go
// Copyright The 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 zipkin
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import (
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"net/http"
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"sync"
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"testing"
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"time"
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zkmodel "github.com/openzipkin/zipkin-go/model"
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"github.com/stretchr/testify/require"
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"google.golang.org/grpc/codes"
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"go.opentelemetry.io/otel/api/core"
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"go.opentelemetry.io/otel/api/trace"
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export "go.opentelemetry.io/otel/sdk/export/trace"
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)
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type mockZipkinCollector struct {
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t *testing.T
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url string
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closing bool
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server *http.Server
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wg *sync.WaitGroup
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lock sync.RWMutex
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models []zkmodel.SpanModel
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}
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func startMockZipkinCollector(t *testing.T) *mockZipkinCollector {
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collector := &mockZipkinCollector{
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t: t,
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closing: false,
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}
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listener, err := net.Listen("tcp", ":0")
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require.NoError(t, err)
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collector.url = fmt.Sprintf("http://%s", listener.Addr().String())
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server := &http.Server{
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Handler: http.HandlerFunc(collector.handler),
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}
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collector.server = server
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wg := &sync.WaitGroup{}
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wg.Add(1)
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collector.wg = wg
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go func() {
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err := server.Serve(listener)
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require.True(t, collector.closing)
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require.Equal(t, http.ErrServerClosed, err)
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wg.Done()
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}()
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return collector
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}
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func (c *mockZipkinCollector) handler(w http.ResponseWriter, r *http.Request) {
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jsonBytes, err := ioutil.ReadAll(r.Body)
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require.NoError(c.t, err)
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var models []zkmodel.SpanModel
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err = json.Unmarshal(jsonBytes, &models)
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require.NoError(c.t, err)
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// for some reason we may get the nonUTC timestamps in models,
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// fix that
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for midx := range models {
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models[midx].Timestamp = models[midx].Timestamp.UTC()
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for aidx := range models[midx].Annotations {
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models[midx].Annotations[aidx].Timestamp = models[midx].Annotations[aidx].Timestamp.UTC()
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}
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}
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c.lock.Lock()
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defer c.lock.Unlock()
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c.models = append(c.models, models...)
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}
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func (c *mockZipkinCollector) Close() {
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if c.closing {
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return
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}
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c.closing = true
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server := c.server
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c.server = nil
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require.NoError(c.t, server.Shutdown(context.Background()))
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c.wg.Wait()
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}
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func (c *mockZipkinCollector) ModelsLen() int {
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c.lock.RLock()
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defer c.lock.RUnlock()
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return len(c.models)
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}
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func (c *mockZipkinCollector) StealModels() []zkmodel.SpanModel {
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c.lock.Lock()
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defer c.lock.Unlock()
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models := c.models
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c.models = nil
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return models
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}
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type logStore struct {
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T *testing.T
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Messages []string
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}
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func (s *logStore) Write(p []byte) (n int, err error) {
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msg := (string)(p)
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if s.T != nil {
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s.T.Logf("%s", msg)
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}
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s.Messages = append(s.Messages, msg)
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return len(p), nil
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}
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func logStoreLogger(s *logStore) *log.Logger {
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return log.New(s, "", 0)
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}
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func TestExportSpans(t *testing.T) {
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spans := []*export.SpanData{
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// parent
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{
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SpanContext: core.SpanContext{
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TraceID: core.TraceID{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F},
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SpanID: core.SpanID{0xFF, 0xFE, 0xFD, 0xFC, 0xFB, 0xFA, 0xF9, 0xF8},
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},
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ParentSpanID: core.SpanID{},
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SpanKind: trace.SpanKindServer,
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Name: "foo",
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StartTime: time.Date(2020, time.March, 11, 19, 24, 0, 0, time.UTC),
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EndTime: time.Date(2020, time.March, 11, 19, 25, 0, 0, time.UTC),
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Attributes: nil,
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MessageEvents: nil,
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StatusCode: codes.NotFound,
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StatusMessage: "404, file not found",
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},
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// child
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{
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SpanContext: core.SpanContext{
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TraceID: core.TraceID{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F},
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SpanID: core.SpanID{0xDF, 0xDE, 0xDD, 0xDC, 0xDB, 0xDA, 0xD9, 0xD8},
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},
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ParentSpanID: core.SpanID{0xFF, 0xFE, 0xFD, 0xFC, 0xFB, 0xFA, 0xF9, 0xF8},
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SpanKind: trace.SpanKindServer,
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Name: "bar",
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StartTime: time.Date(2020, time.March, 11, 19, 24, 15, 0, time.UTC),
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EndTime: time.Date(2020, time.March, 11, 19, 24, 45, 0, time.UTC),
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Attributes: nil,
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MessageEvents: nil,
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StatusCode: codes.PermissionDenied,
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StatusMessage: "403, forbidden",
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},
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}
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models := []zkmodel.SpanModel{
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// model of parent
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{
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SpanContext: zkmodel.SpanContext{
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TraceID: zkmodel.TraceID{
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High: 0x001020304050607,
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Low: 0x8090a0b0c0d0e0f,
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},
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ID: zkmodel.ID(0xfffefdfcfbfaf9f8),
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ParentID: nil,
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Debug: false,
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Sampled: nil,
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Err: nil,
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},
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Name: "foo",
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Kind: "SERVER",
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Timestamp: time.Date(2020, time.March, 11, 19, 24, 0, 0, time.UTC),
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Duration: time.Minute,
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Shared: false,
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LocalEndpoint: nil,
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RemoteEndpoint: nil,
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Annotations: nil,
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Tags: map[string]string{
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"ot.status_code": "NotFound",
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"ot.status_description": "404, file not found",
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},
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},
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// model of child
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{
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SpanContext: zkmodel.SpanContext{
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TraceID: zkmodel.TraceID{
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High: 0x001020304050607,
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Low: 0x8090a0b0c0d0e0f,
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},
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ID: zkmodel.ID(0xdfdedddcdbdad9d8),
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ParentID: zkmodelIDPtr(0xfffefdfcfbfaf9f8),
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Debug: false,
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Sampled: nil,
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Err: nil,
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},
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Name: "bar",
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Kind: "SERVER",
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Timestamp: time.Date(2020, time.March, 11, 19, 24, 15, 0, time.UTC),
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Duration: 30 * time.Second,
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Shared: false,
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LocalEndpoint: nil,
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RemoteEndpoint: nil,
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Annotations: nil,
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Tags: map[string]string{
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"ot.status_code": "PermissionDenied",
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"ot.status_description": "403, forbidden",
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},
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},
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}
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require.Len(t, models, len(spans))
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collector := startMockZipkinCollector(t)
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defer collector.Close()
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ls := &logStore{T: t}
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logger := logStoreLogger(ls)
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exporter, err := NewExporter(collector.url, WithLogger(logger))
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require.NoError(t, err)
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ctx := context.Background()
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require.Len(t, ls.Messages, 0)
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exporter.ExportSpans(ctx, spans[0:1])
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require.Len(t, ls.Messages, 2)
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require.Contains(t, ls.Messages[0], "send a POST request")
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require.Contains(t, ls.Messages[1], "zipkin responded")
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ls.Messages = nil
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exporter.ExportSpans(ctx, nil)
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require.Len(t, ls.Messages, 1)
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require.Contains(t, ls.Messages[0], "no spans to export")
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ls.Messages = nil
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exporter.ExportSpans(ctx, spans[1:2])
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require.Contains(t, ls.Messages[0], "send a POST request")
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require.Contains(t, ls.Messages[1], "zipkin responded")
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checkFunc := func() bool {
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return collector.ModelsLen() == len(models)
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}
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require.Eventually(t, checkFunc, time.Second, 10*time.Millisecond)
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require.Equal(t, models, collector.StealModels())
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}
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