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opentelemetry-go/example/grpc/config/config.go
David Montoya 77543cd80e Unary gRPC tracing example (#351)
* add grpc example

* update example guide

* decouple trace provider initialization

* add source license

* update api references
2019-11-26 16:14:09 -08:00

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Go

// Copyright 2019, 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 config
import (
"log"
"go.opentelemetry.io/otel/api/global"
"go.opentelemetry.io/otel/exporter/trace/stdout"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
)
// Init configures an OpenTelemetry exporter and trace provider
func Init() {
exporter, err := stdout.NewExporter(stdout.Options{PrettyPrint: true})
if err != nil {
log.Fatal(err)
}
tp, err := sdktrace.NewProvider(
sdktrace.WithConfig(sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}),
sdktrace.WithSyncer(exporter),
)
if err != nil {
log.Fatal(err)
}
global.SetTraceProvider(tp)
}