mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-01-26 03:52:03 +02:00
59 lines
2.3 KiB
Go
59 lines
2.3 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 main // import "go.opentelemetry.io/otel/bridge/opencensus/examples/simple"
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import (
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"context"
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"log"
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octrace "go.opencensus.io/trace"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/bridge/opencensus"
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"go.opentelemetry.io/otel/exporters/stdout"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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)
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func main() {
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ctx := context.Background()
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log.Println("Configuring OpenCensus. Not Registering any OpenCensus exporters.")
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octrace.ApplyConfig(octrace.Config{DefaultSampler: octrace.AlwaysSample()})
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log.Println("Registering OpenTelemetry stdout exporter.")
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otExporter, err := stdout.NewExporter(stdout.WithPrettyPrint())
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if err != nil {
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log.Fatal(err)
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}
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tp := sdktrace.NewTracerProvider(sdktrace.WithSyncer(otExporter))
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otel.SetTracerProvider(tp)
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log.Println("Installing the OpenCensus bridge to make OpenCensus libraries write spans using OpenTelemetry.")
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tracer := tp.Tracer("simple")
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octrace.DefaultTracer = opencensus.NewTracer(tracer)
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log.Println("Creating OpenCensus span, which should be printed out using the OpenTelemetry stdout exporter.\n-- It should have no parent, since it is the first span.")
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ctx, outerOCSpan := octrace.StartSpan(ctx, "OpenCensusOuterSpan")
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outerOCSpan.End()
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log.Println("Creating OpenTelemetry span\n-- It should have the OpenCensus span as a parent, since the OpenCensus span was written with using OpenTelemetry APIs.")
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ctx, otspan := tracer.Start(ctx, "OpenTelemetrySpan")
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otspan.End()
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log.Println("Creating OpenCensus span, which should be printed out using the OpenTelemetry stdout exporter.\n-- It should have the OpenTelemetry span as a parent, since it was written using OpenTelemetry APIs")
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_, innerOCSpan := octrace.StartSpan(ctx, "OpenCensusInnerSpan")
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innerOCSpan.End()
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}
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