initial middleware refactor

cmd/chihaya/main.go

@@ -0,0 +1,47 @@
+// Copyright 2016 The Chihaya Authors. All rights reserved.
+// Use of this source code is governed by the BSD 2-Clause license,
+// which can be found in the LICENSE file.
+
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/chihaya/chihaya/config"
+	"github.com/chihaya/chihaya/server"
+	"github.com/chihaya/chihaya/tracker"
+)
+
+var configPath string
+
+func init() {
+	flag.StringVar(&configPath, "config", "", "path to the configuration file")
+}
+
+func main() {
+	flag.Parse()
+
+	cfg, err := config.Open(configPath)
+	if err != nil {
+		log.Fatal("failed to load config: " + err.Error())
+	}
+
+	tkr, err := tracker.NewTracker(&cfg.Tracker)
+	if err != nil {
+		log.Fatal("failed to create tracker: " + err.Error())
+	}
+
+	pool, err := server.StartPool(cfg.Servers, tkr)
+	if err != nil {
+		log.Fatal("failed to create server pool: " + err.Error())
+	}
+
+	shutdown := make(chan os.Signal)
+	signal.Notify(shutdown, syscall.SIGINT, syscall.SIGTERM)
+	<-shutdown
+	pool.Stop()
+}