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https://github.com/open-telemetry/opentelemetry-go.git
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77543cd80e
* add grpc example * update example guide * decouple trace provider initialization * add source license * update api references
55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
// Copyright 2019, 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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"time"
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"go.opentelemetry.io/otel/example/grpc/api"
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"go.opentelemetry.io/otel/example/grpc/config"
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"google.golang.org/grpc"
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"google.golang.org/grpc/metadata"
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"go.opentelemetry.io/otel/example/grpc/middleware/tracing"
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)
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func main() {
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config.Init()
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var conn *grpc.ClientConn
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conn, err := grpc.Dial(":7777", grpc.WithInsecure(), grpc.WithUnaryInterceptor(tracing.UnaryClientInterceptor))
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if err != nil {
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log.Fatalf("did not connect: %s", err)
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}
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defer conn.Close()
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c := api.NewHelloServiceClient(conn)
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md := metadata.Pairs(
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"timestamp", time.Now().Format(time.StampNano),
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"client-id", "web-api-client-us-east-1",
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"user-id", "some-test-user-id",
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)
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context := metadata.NewOutgoingContext(context.Background(), md)
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response, err := c.SayHello(context, &api.HelloRequest{Greeting: "World"})
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if err != nil {
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log.Fatalf("Error when calling SayHello: %s", err)
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}
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log.Printf("Response from server: %s", response.Reply)
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}
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