// Copyright 2021 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 (
	"context"
	"log"
	"os"
	"os/signal"
	"time"

	"github.com/GoogleCloudPlatform/opentelemetry-operations-go/e2e-test-server/endtoendserver"
)

func main() {
	runCtx, cancelRunning := context.WithCancel(context.Background())

	// Gracefully close on SIGINT
	interrupted := make(chan os.Signal, 1)
	signal.Notify(interrupted, os.Interrupt)
	go func() {
		<-interrupted
		log.Println("Received interrupt signal, shutting down.")
		cancelRunning()
	}()

	server, err := endtoendserver.New()
	if err != nil {
		log.Fatalf("Could not initialize server: %v", err)
	}

	if err = server.Run(runCtx); err != nil {
		log.Printf("Unexpected error occurred: %v", err)
	}

	log.Print("Shutting down")
	shutdownCtx, cancelShutdown := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancelShutdown()
	if err = server.Shutdown(shutdownCtx); err != nil {
		log.Printf("Unexpected error occurred: %v", err)
	}
}
