mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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cdf67ddfa3
* Update semantic conventions to v1.4.0, move to versioned package Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com> * precommit wants explicit import path renaming for semconv/v1.4.0 Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com> * Fix semconv import path in stdout exporter example Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com> Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
137 lines
3.6 KiB
Go
137 lines
3.6 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 stdout_test
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import (
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"context"
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"log"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/exporters/stdout"
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"go.opentelemetry.io/otel/metric"
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"go.opentelemetry.io/otel/metric/global"
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controller "go.opentelemetry.io/otel/sdk/metric/controller/basic"
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processor "go.opentelemetry.io/otel/sdk/metric/processor/basic"
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"go.opentelemetry.io/otel/sdk/metric/selector/simple"
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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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const (
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instrumentationName = "github.com/instrumentron"
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instrumentationVersion = "v0.1.0"
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)
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var (
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tracer = otel.GetTracerProvider().Tracer(
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instrumentationName,
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trace.WithInstrumentationVersion(instrumentationVersion),
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trace.WithSchemaURL("https://opentelemetry.io/schemas/1.2.0"),
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)
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meter = global.GetMeterProvider().Meter(
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instrumentationName,
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metric.WithInstrumentationVersion(instrumentationVersion),
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)
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loopCounter = metric.Must(meter).NewInt64Counter("function.loops")
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paramValue = metric.Must(meter).NewInt64ValueRecorder("function.param")
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nameKey = attribute.Key("function.name")
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)
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func add(ctx context.Context, x, y int64) int64 {
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nameKV := nameKey.String("add")
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var span trace.Span
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ctx, span = tracer.Start(ctx, "Addition")
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defer span.End()
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loopCounter.Add(ctx, 1, nameKV)
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paramValue.Record(ctx, x, nameKV)
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paramValue.Record(ctx, y, nameKV)
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return x + y
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}
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func multiply(ctx context.Context, x, y int64) int64 {
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nameKV := nameKey.String("multiply")
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var span trace.Span
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ctx, span = tracer.Start(ctx, "Multiplication")
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defer span.End()
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loopCounter.Add(ctx, 1, nameKV)
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paramValue.Record(ctx, x, nameKV)
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paramValue.Record(ctx, y, nameKV)
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return x * y
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}
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func Resource() *resource.Resource {
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return resource.NewWithAttributes(
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semconv.SchemaURL,
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semconv.ServiceNameKey.String("stdout-example"),
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semconv.ServiceVersionKey.String("0.0.1"),
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)
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}
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func InstallExportPipeline(ctx context.Context) func() {
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exporter, err := stdout.New(stdout.WithPrettyPrint())
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if err != nil {
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log.Fatalf("creating stdout exporter: %v", err)
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}
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tracerProvider := sdktrace.NewTracerProvider(
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sdktrace.WithBatcher(exporter),
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sdktrace.WithResource(Resource()),
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)
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otel.SetTracerProvider(tracerProvider)
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pusher := controller.New(
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processor.New(
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simple.NewWithInexpensiveDistribution(),
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exporter,
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),
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controller.WithExporter(exporter),
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)
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if err = pusher.Start(ctx); err != nil {
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log.Fatalf("starting push controller: %v", err)
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}
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global.SetMeterProvider(pusher.MeterProvider())
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return func() {
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if err := pusher.Stop(ctx); err != nil {
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log.Fatalf("stopping push controller: %v", err)
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}
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if err := tracerProvider.Shutdown(ctx); err != nil {
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log.Fatalf("stopping tracer provider: %v", err)
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}
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}
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}
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func Example() {
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ctx := context.Background()
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// Registers both a tracer and meter Provider globally.
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cleanup := InstallExportPipeline(ctx)
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defer cleanup()
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log.Println("the answer is", add(ctx, multiply(ctx, multiply(ctx, 2, 2), 10), 2))
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}
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