main.go

/*
 * Copyright (c) 2019  InterDigital Communications, Inc
 *
 * 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 (
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	server "github.com/InterDigitalInc/AdvantEDGE/go-apps/meep-metrics-engine/server"
	log "github.com/InterDigitalInc/AdvantEDGE/go-packages/meep-logger"
	ss "github.com/InterDigitalInc/AdvantEDGE/go-packages/meep-sessions"

	"github.com/gorilla/handlers"
)

func init() {
	// Log as JSON instead of the default ASCII formatter.
	log.MeepJSONLogInit("meep-metrics-engine")
}

func main() {
	log.Info(os.Args)

	log.Info("Starting Metric Engine Service")

	run := true

	go func() {
		sigchan := make(chan os.Signal, 10)
		signal.Notify(sigchan, syscall.SIGINT, syscall.SIGTERM)
		<-sigchan
		log.Info("Program killed !")
		// do last actions and wait for all write operations to end
		run = false
	}()

	go func() {
		// Initialize Metrics Engine
		err := server.Init()
		if err != nil {
			log.Error("Failed to initialize Metrics Engine")
			run = false
			return
		}

		// Start Metrics Engine Event Handler thread
		err = server.Run()
		if err != nil {
			log.Error("Failed to start Metrics Engine")
			run = false
			return
		}

		// Start Metric Engine Service REST API Server
		accessMap := map[string]string{
			"IndexV2":                       ss.AccessBlock,
			"PostEventQuery":                ss.AccessBlock,
			"PostHttpQuery":                 ss.AccessVerify,
			"PostNetworkQuery":              ss.AccessBlock,
			"CreateEventSubscription":       ss.AccessBlock,
			"CreateNetworkSubscription":     ss.AccessBlock,
			"DeleteEventSubscriptionById":   ss.AccessBlock,
			"DeleteNetworkSubscriptionById": ss.AccessBlock,
			"GetEventSubscription":          ss.AccessBlock,
			"GetEventSubscriptionById":      ss.AccessBlock,
			"GetNetworkSubscription":        ss.AccessBlock,
			"GetNetworkSubscriptionById":    ss.AccessBlock,
		}
		router := server.NewRouter(accessMap)
		methods := handlers.AllowedMethods([]string{"OPTIONS", "DELETE", "GET", "HEAD", "POST", "PUT"})
		header := handlers.AllowedHeaders([]string{"content-type"})
		log.Fatal(http.ListenAndServe(":80", handlers.CORS(methods, header)(router)))
		run = false
	}()

	count := 0
	for {
		if !run {
			log.Info("Ran for ", count, " seconds")
			break
		}
		time.Sleep(time.Second)
		count++
	}

}