mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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f24f52aa06
* Debug Logging for sdk/trace * Fixes spelling, adds marshaling to attribute sets Co-authored-by: Aaron Clawson <MadVikingGod@users.noreply.github.com> Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
82 lines
2.3 KiB
Go
82 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
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import (
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"context"
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"log"
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"github.com/go-logr/stdr"
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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/baggage"
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"go.opentelemetry.io/otel/example/namedtracer/foo"
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"go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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"go.opentelemetry.io/otel/trace"
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)
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var (
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fooKey = attribute.Key("ex.com/foo")
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barKey = attribute.Key("ex.com/bar")
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anotherKey = attribute.Key("ex.com/another")
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)
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var tp *sdktrace.TracerProvider
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// initTracer creates and registers trace provider instance.
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func initTracer() {
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var err error
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exp, err := stdouttrace.New(stdouttrace.WithPrettyPrint())
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if err != nil {
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log.Panicf("failed to initialize stdouttrace exporter %v\n", err)
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return
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}
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bsp := sdktrace.NewBatchSpanProcessor(exp)
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tp = sdktrace.NewTracerProvider(
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sdktrace.WithSampler(sdktrace.AlwaysSample()),
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sdktrace.WithSpanProcessor(bsp),
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)
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otel.SetTracerProvider(tp)
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}
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func main() {
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// Set logging level to info to see SDK status messages
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stdr.SetVerbosity(5)
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// initialize trace provider.
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initTracer()
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// Create a named tracer with package path as its name.
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tracer := tp.Tracer("example/namedtracer/main")
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ctx := context.Background()
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defer func() { _ = tp.Shutdown(ctx) }()
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m0, _ := baggage.NewMember(string(fooKey), "foo1")
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m1, _ := baggage.NewMember(string(barKey), "bar1")
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b, _ := baggage.New(m0, m1)
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ctx = baggage.ContextWithBaggage(ctx, b)
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var span trace.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!", trace.WithAttributes(attribute.Int("bogons", 100)))
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span.SetAttributes(anotherKey.String("yes"))
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if err := foo.SubOperation(ctx); err != nil {
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panic(err)
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}
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}
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