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23e32b19ec
Consistency with deferring span.End, variable names. Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
70 lines
1.8 KiB
Go
70 lines
1.8 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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// 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/otel/global"
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"go.opentelemetry.io/otel/label"
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"go.opentelemetry.io/otel/exporters/trace/jaeger"
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sdktrace "go.opentelemetry.io/otel/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 and install Jaeger export pipeline.
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flush, err := jaeger.InstallNewPipeline(
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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: []label.KeyValue{
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label.String("exporter", "jaeger"),
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label.Float64("float", 312.23),
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},
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}),
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jaeger.WithSDK(&sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}),
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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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return flush
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}
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func main() {
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ctx := context.Background()
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flush := initTracer()
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defer flush()
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tr := global.Tracer("component-main")
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ctx, span := tr.Start(ctx, "foo")
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defer span.End()
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bar(ctx)
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}
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func bar(ctx context.Context) {
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tr := global.Tracer("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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