main.go

// Copyright 2018 Google LLC
//
// 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 (
	"fmt"
	"net"
	"os"
	"time"

	"github.com/sirupsen/logrus"
	"golang.org/x/net/context"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/reflection"
	"google.golang.org/grpc/status"

	"go.opentelemetry.io/otel/api/global"
	"go.opentelemetry.io/otel/api/kv"
	"go.opentelemetry.io/otel/exporters/trace/jaeger"

	grpcotel "go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc"
	sdktrace "go.opentelemetry.io/otel/sdk/trace"

	pb "github.com/GoogleCloudPlatform/microservices-demo/src/shippingservice/genproto"
	healthpb "google.golang.org/grpc/health/grpc_health_v1"
)

const (
	defaultPort = "50051"
)

var log *logrus.Logger

func init() {
	log = logrus.New()
	log.Level = logrus.DebugLevel
	log.Formatter = &logrus.JSONFormatter{
		FieldMap: logrus.FieldMap{
			logrus.FieldKeyTime:  "timestamp",
			logrus.FieldKeyLevel: "severity",
			logrus.FieldKeyMsg:   "message",
		},
		TimestampFormat: time.RFC3339Nano,
	}
	log.Out = os.Stdout
}

func main() {
	if os.Getenv("DISABLE_TRACING") == "" {
		log.Info("Tracing enabled.")
		initTracer(log)
	} else {
		log.Info("Tracing disabled.")
	}

	port := defaultPort
	if value, ok := os.LookupEnv("PORT"); ok {