forked from goodrain/rainbond
/
server.go
140 lines (120 loc) · 3.83 KB
/
server.go
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// Copyright (C) 2014-2018 Goodrain Co., Ltd.
// RAINBOND, Application Management Platform
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package server
import (
"context"
"fmt"
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/goodrain/rainbond/gateway/cluster"
"github.com/go-chi/chi"
"github.com/goodrain/rainbond/util"
"github.com/goodrain/rainbond/discover"
"github.com/goodrain/rainbond/gateway/metric"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/Sirupsen/logrus"
"github.com/goodrain/rainbond/cmd/gateway/option"
"github.com/goodrain/rainbond/gateway/controller"
"k8s.io/apiserver/pkg/server/healthz"
)
//Run start run
func Run(s *option.GWServer) error {
logrus.Info("start gateway...")
errCh := make(chan error)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
//create cluster node manage
_, err := cluster.CreateNodeManager(s.Config)
if err != nil {
return fmt.Errorf("create gateway node manage failure %s", err.Error())
}
reg := prometheus.NewRegistry()
reg.MustRegister(prometheus.NewGoCollector())
reg.MustRegister(prometheus.NewProcessCollector(os.Getpid(), "gateway"))
mc := metric.NewDummyCollector()
if s.Config.EnableMetrics {
mc, err = metric.NewCollector(s.NodeName, reg)
if err != nil {
logrus.Fatalf("Error creating prometheus collector: %v", err)
}
}
mc.Start()
gwc, err := controller.NewGWController(ctx, &s.Config, mc)
if err != nil {
return err
}
if gwc == nil {
return fmt.Errorf("Fail to new GWController")
}
if err := gwc.Start(errCh); err != nil {
return fmt.Errorf("Fail to start GWController %s", err.Error())
}
defer gwc.Close()
mux := chi.NewMux()
registerHealthz(gwc, mux)
registerMetrics(reg, mux)
if s.Debug {
util.ProfilerSetup(mux)
}
go startHTTPServer(s.ListenPorts.Health, mux)
keepalive, err := discover.CreateKeepAlive(s.Config.EtcdEndpoint, "gateway", s.Config.NodeName,
s.Config.HostIP, s.ListenPorts.Health)
if err != nil {
return err
}
if err := keepalive.Start(); err != nil {
return err
}
defer keepalive.Stop()
logrus.Info("RBD app gateway start success!")
term := make(chan os.Signal)
signal.Notify(term, os.Interrupt, syscall.SIGTERM)
select {
case <-term:
logrus.Warn("Received SIGTERM, exiting gracefully...")
case err := <-errCh:
logrus.Errorf("Received a error %s, exiting gracefully...", err.Error())
}
logrus.Info("See you next time!")
return nil
}
func registerHealthz(gc *controller.GWController, mux *chi.Mux) {
// expose health check endpoint (/healthz)
healthz.InstallHandler(mux,
healthz.PingHealthz,
gc,
)
}
func registerMetrics(reg *prometheus.Registry, mux *chi.Mux) {
mux.Handle(
"/metrics",
promhttp.HandlerFor(reg, promhttp.HandlerOpts{}),
)
}
func startHTTPServer(port int, mux *chi.Mux) {
server := &http.Server{
Addr: fmt.Sprintf(":%v", port),
Handler: mux,
ReadTimeout: 10 * time.Second,
ReadHeaderTimeout: 10 * time.Second,
WriteTimeout: 300 * time.Second,
IdleTimeout: 120 * time.Second,
}
logrus.Fatal(server.ListenAndServe())
}