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61839133f3
This method did not have any effect. had been used back
when exporters were providing utility methods for setting up full
pipelines. These utilities went away in
4883cb119d.
90 lines
2.5 KiB
Go
90 lines
2.5 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 zipkin is an example program that creates spans
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// and uploads to openzipkin collector.
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package main
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import (
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"context"
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"flag"
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"log"
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"os"
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"time"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/exporters/zipkin"
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"go.opentelemetry.io/otel/sdk/resource"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
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"go.opentelemetry.io/otel/trace"
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)
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var logger = log.New(os.Stderr, "zipkin-example", log.Ldate|log.Ltime|log.Llongfile)
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// initTracer creates a new trace provider instance and registers it as global trace provider.
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func initTracer(url string) func() {
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// Create Zipkin Exporter and install it as a global tracer.
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//
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// For demoing purposes, always sample. In a production application, you should
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// configure the sampler to a trace.ParentBased(trace.TraceIDRatioBased) set at the desired
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// ratio.
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exporter, err := zipkin.New(
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url,
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zipkin.WithLogger(logger),
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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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batcher := sdktrace.NewBatchSpanProcessor(exporter)
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tp := sdktrace.NewTracerProvider(
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sdktrace.WithSpanProcessor(batcher),
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sdktrace.WithResource(resource.NewWithAttributes(
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semconv.SchemaURL,
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semconv.ServiceNameKey.String("zipkin-test"),
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)),
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)
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otel.SetTracerProvider(tp)
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return func() {
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_ = tp.Shutdown(context.Background())
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}
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}
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func main() {
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url := flag.String("zipkin", "http://localhost:9411/api/v2/spans", "zipkin url")
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flag.Parse()
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shutdown := initTracer(*url)
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defer shutdown()
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ctx := context.Background()
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tr := otel.GetTracerProvider().Tracer("component-main")
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ctx, span := tr.Start(ctx, "foo", trace.WithSpanKind(trace.SpanKindServer))
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<-time.After(6 * time.Millisecond)
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bar(ctx)
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<-time.After(6 * time.Millisecond)
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span.End()
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}
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func bar(ctx context.Context) {
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tr := otel.GetTracerProvider().Tracer("component-bar")
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_, span := tr.Start(ctx, "bar")
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<-time.After(6 * time.Millisecond)
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span.End()
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}
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