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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package main
import (
"context"
"fmt"
"log"
"os"
"time"
"github.com/micro/go-micro"
newrelic "github.com/newrelic/go-agent"
"github.com/newrelic/go-agent/_integrations/nrmicro"
proto "github.com/newrelic/go-agent/_integrations/nrmicro/example/proto"
)
// Greeter is the server struct
type Greeter struct{}
// Hello is the method on the server being called
func (g *Greeter) Hello(ctx context.Context, req *proto.HelloRequest, rsp *proto.HelloResponse) error {
name := req.GetName()
if txn := newrelic.FromContext(ctx); nil != txn {
txn.AddAttribute("Name", name)
}
fmt.Println("Request received from", name)
rsp.Greeting = "Hello " + name
return nil
}
func mustGetEnv(key string) string {
if val := os.Getenv(key); "" != val {
return val
}
panic(fmt.Sprintf("environment variable %s unset", key))
}
func main() {
cfg := newrelic.NewConfig("Micro Server", mustGetEnv("NEW_RELIC_LICENSE_KEY"))
cfg.Logger = newrelic.NewDebugLogger(os.Stdout)
app, err := newrelic.NewApplication(cfg)
if nil != err {
panic(err)
}
err = app.WaitForConnection(10 * time.Second)
if nil != err {
panic(err)
}
defer app.Shutdown(10 * time.Second)
service := micro.NewService(
micro.Name("greeter"),
// Add the New Relic middleware which will start a new transaction for
// each Handler invocation.
micro.WrapHandler(nrmicro.HandlerWrapper(app)),
)
service.Init()
proto.RegisterGreeterHandler(service.Server(), new(Greeter))
if err := service.Run(); err != nil {
log.Fatal(err)
}
}
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