mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-04-21 11:57:04 +02:00
ec300b28ad
* Update Span API event methods Remove the context argument from the event methods. It is unused and can be added back in as a passed option if needed in the future. Update AddEvent to accept a required name and a set of options. These options are the new EventOption type that can be used to configure a SpanConfig Timestamp and Attributes. Remove the AddEventWithTimestamp method as it is redundant to calling AddEvent with a WithTimestamp option. Update RecordError to also accept the EventOptions. * Add changes to CHANGELOG * Add LifeCycleOption Use the LifeCycleOption to encapsulate the options passed to a span for life cycle events.
118 lines
3.4 KiB
Go
118 lines
3.4 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
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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/api/global"
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"go.opentelemetry.io/otel/api/metric"
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"go.opentelemetry.io/otel/exporters/stdout"
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"go.opentelemetry.io/otel/label"
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"go.opentelemetry.io/otel/propagators"
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"go.opentelemetry.io/otel/sdk/metric/controller/push"
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"go.opentelemetry.io/otel/sdk/metric/processor/basic"
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"go.opentelemetry.io/otel/sdk/metric/selector/simple"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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)
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var (
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fooKey = label.Key("ex.com/foo")
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barKey = label.Key("ex.com/bar")
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lemonsKey = label.Key("ex.com/lemons")
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anotherKey = label.Key("ex.com/another")
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)
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func main() {
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exporter, err := stdout.NewExporter([]stdout.Option{
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stdout.WithQuantiles([]float64{0.5, 0.9, 0.99}),
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stdout.WithPrettyPrint(),
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}...)
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if err != nil {
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log.Fatalf("failed to initialize stdout export pipeline: %v", err)
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}
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bsp := sdktrace.NewBatchSpanProcessor(exporter)
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defer bsp.Shutdown()
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tp := sdktrace.NewTracerProvider(sdktrace.WithSpanProcessor(bsp))
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pusher := push.New(
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basic.New(
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simple.NewWithExactDistribution(),
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exporter,
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),
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exporter,
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)
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pusher.Start()
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defer pusher.Stop()
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global.SetTracerProvider(tp)
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global.SetMeterProvider(pusher.MeterProvider())
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// set global propagator to baggage (the default is no-op).
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global.SetTextMapPropagator(propagators.Baggage{})
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tracer := global.Tracer("ex.com/basic")
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meter := global.Meter("ex.com/basic")
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commonLabels := []label.KeyValue{lemonsKey.Int(10), label.String("A", "1"), label.String("B", "2"), label.String("C", "3")}
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oneMetricCB := func(_ context.Context, result metric.Float64ObserverResult) {
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result.Observe(1, commonLabels...)
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}
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_ = metric.Must(meter).NewFloat64ValueObserver("ex.com.one", oneMetricCB,
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metric.WithDescription("A ValueObserver set to 1.0"),
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)
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valuerecorderTwo := metric.Must(meter).NewFloat64ValueRecorder("ex.com.two")
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ctx := context.Background()
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ctx = otel.ContextWithBaggageValues(ctx, fooKey.String("foo1"), barKey.String("bar1"))
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valuerecorder := valuerecorderTwo.Bind(commonLabels...)
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defer valuerecorder.Unbind()
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err = func(ctx context.Context) error {
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var span otel.Span
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ctx, span = tracer.Start(ctx, "operation")
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defer span.End()
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span.AddEvent("Nice operation!", otel.WithAttributes(label.Int("bogons", 100)))
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span.SetAttributes(anotherKey.String("yes"))
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meter.RecordBatch(
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// Note: call-site variables added as context Entries:
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otel.ContextWithBaggageValues(ctx, anotherKey.String("xyz")),
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commonLabels,
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valuerecorderTwo.Measurement(2.0),
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)
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return func(ctx context.Context) error {
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var span otel.Span
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ctx, span = tracer.Start(ctx, "Sub operation...")
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defer span.End()
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span.SetAttributes(lemonsKey.String("five"))
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span.AddEvent("Sub span event")
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valuerecorder.Record(ctx, 1.3)
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return nil
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}(ctx)
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}(ctx)
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if err != nil {
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panic(err)
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}
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}
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