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opentelemetry-go/example/namedtracer/main.go
Aaron Clawson f24f52aa06
Debug Logging for sdk/trace (#2500)
* 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>
2022-01-10 19:58:01 -05:00

82 lines
2.3 KiB
Go

// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"context"
"log"
"github.com/go-logr/stdr"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/baggage"
"go.opentelemetry.io/otel/example/namedtracer/foo"
"go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
"go.opentelemetry.io/otel/trace"
)
var (
fooKey = attribute.Key("ex.com/foo")
barKey = attribute.Key("ex.com/bar")
anotherKey = attribute.Key("ex.com/another")
)
var tp *sdktrace.TracerProvider
// initTracer creates and registers trace provider instance.
func initTracer() {
var err error
exp, err := stdouttrace.New(stdouttrace.WithPrettyPrint())
if err != nil {
log.Panicf("failed to initialize stdouttrace exporter %v\n", err)
return
}
bsp := sdktrace.NewBatchSpanProcessor(exp)
tp = sdktrace.NewTracerProvider(
sdktrace.WithSampler(sdktrace.AlwaysSample()),
sdktrace.WithSpanProcessor(bsp),
)
otel.SetTracerProvider(tp)
}
func main() {
// Set logging level to info to see SDK status messages
stdr.SetVerbosity(5)
// initialize trace provider.
initTracer()
// Create a named tracer with package path as its name.
tracer := tp.Tracer("example/namedtracer/main")
ctx := context.Background()
defer func() { _ = tp.Shutdown(ctx) }()
m0, _ := baggage.NewMember(string(fooKey), "foo1")
m1, _ := baggage.NewMember(string(barKey), "bar1")
b, _ := baggage.New(m0, m1)
ctx = baggage.ContextWithBaggage(ctx, b)
var span trace.Span
ctx, span = tracer.Start(ctx, "operation")
defer span.End()
span.AddEvent("Nice operation!", trace.WithAttributes(attribute.Int("bogons", 100)))
span.SetAttributes(anotherKey.String("yes"))
if err := foo.SubOperation(ctx); err != nil {
panic(err)
}
}