mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-01-01 22:09:57 +02:00
b04db14146
* named tracer prototype * rename Manager to Provider. * fix compile error after merge. * rename Tracer method to GetTracer * provider with options. * update test. * cleanup make circl-ci * remove global config. * some cleanup. * use provider for bridge * update propagation test. * update examples and plugins. * remove GlobalTracer methods. * fix review comments. * some more cleanup. * remove unnecessary getTracer call in benchmark test.
84 lines
2.2 KiB
Go
84 lines
2.2 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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// Command jaeger is an example program that creates spans
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// and uploads to Jaeger.
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package main
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import (
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"context"
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"log"
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"go.opentelemetry.io/api/core"
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"go.opentelemetry.io/api/key"
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apitrace "go.opentelemetry.io/api/trace"
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"go.opentelemetry.io/exporter/trace/jaeger"
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sdktrace "go.opentelemetry.io/sdk/trace"
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)
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// initTracer creates a new trace provider instance and registers it as global trace provider.
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func initTracer() func() {
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// Create Jaeger Exporter
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exporter, err := jaeger.NewExporter(
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jaeger.WithCollectorEndpoint("http://localhost:14268/api/traces"),
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jaeger.WithProcess(jaeger.Process{
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ServiceName: "trace-demo",
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Tags: []core.KeyValue{
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key.String("exporter", "jaeger"),
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key.Float64("float", 312.23),
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key.Bytes("bytes", []byte("byte array")),
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},
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}),
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)
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if err != nil {
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log.Fatal(err)
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}
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exporter.RegisterSimpleSpanProcessor()
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// For demoing purposes, always sample. In a production application, you should
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// configure this to a trace.ProbabilitySampler set at the desired
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// probability.
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tp, err := sdktrace.NewProvider(
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sdktrace.WithConfig(sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}),
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sdktrace.WithSyncer(exporter))
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if err != nil {
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log.Fatal(err)
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}
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apitrace.SetGlobalProvider(tp)
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return func() {
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exporter.Flush()
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}
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}
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func main() {
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fn := initTracer()
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defer fn()
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ctx := context.Background()
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tr := apitrace.GlobalProvider().GetTracer("component-main")
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ctx, span := tr.Start(ctx, "/foo")
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bar(ctx)
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span.End()
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}
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func bar(ctx context.Context) {
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tr := apitrace.GlobalProvider().GetTracer("component-bar")
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_, span := tr.Start(ctx, "/bar")
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defer span.End()
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// Do bar...
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}
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