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example_test.go
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example_test.go
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// Copyright 2018, OpenCensus 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 ocagent_test
import (
"context"
"fmt"
"log"
"time"
"google.golang.org/grpc/credentials"
"contrib.go.opencensus.io/exporter/ocagent"
"go.opencensus.io/trace"
)
func Example_insecure() {
exp, err := ocagent.NewExporter(ocagent.WithInsecure(), ocagent.WithServiceName("engine"))
if err != nil {
log.Fatalf("Failed to create the agent exporter: %v", err)
}
defer exp.Stop()
// Now register it as a trace exporter.
trace.RegisterExporter(exp)
// Then use the OpenCensus tracing library, like we normally would.
ctx, span := trace.StartSpan(context.Background(), "AgentExporter-Example")
defer span.End()
for i := 0; i < 10; i++ {
_, iSpan := trace.StartSpan(ctx, fmt.Sprintf("Sample-%d", i))
<-time.After(6 * time.Millisecond)
iSpan.End()
}
}
func Example_withTLS() {
// Please take at look at https://godoc.org/google.golang.org/grpc/credentials#TransportCredentials
// for ways on how to initialize gRPC TransportCredentials.
creds, err := credentials.NewClientTLSFromFile("my-cert.pem", "")
if err != nil {
log.Fatalf("Failed to create gRPC client TLS credentials: %v", err)
}
exp, err := ocagent.NewExporter(ocagent.WithTLSCredentials(creds), ocagent.WithServiceName("engine"))
if err != nil {
log.Fatalf("Failed to create the agent exporter: %v", err)
}
defer exp.Stop()
// Now register it as a trace exporter.
trace.RegisterExporter(exp)
// Then use the OpenCensus tracing library, like we normally would.
ctx, span := trace.StartSpan(context.Background(), "Securely-Talking-To-Agent-Span")
defer span.End()
for i := 0; i < 10; i++ {
_, iSpan := trace.StartSpan(ctx, fmt.Sprintf("Sample-%d", i))
<-time.After(6 * time.Millisecond)
iSpan.End()
}
}