mirror of
https://gitee.com/rainbond/Rainbond.git
synced 2024-12-11 07:10:04 +08:00
173 lines
4.7 KiB
Go
173 lines
4.7 KiB
Go
// Copyright (C) 2014-2018 Goodrain Co., Ltd.
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// RAINBOND, Application Management Platform
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package server
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import (
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"context"
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"fmt"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/go-chi/chi"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"github.com/sirupsen/logrus"
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"k8s.io/apiserver/pkg/server/healthz"
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"k8s.io/client-go/kubernetes"
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"github.com/goodrain/rainbond/cmd/gateway/option"
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"github.com/goodrain/rainbond/discover"
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"github.com/goodrain/rainbond/gateway/cluster"
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"github.com/goodrain/rainbond/gateway/controller"
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"github.com/goodrain/rainbond/gateway/metric"
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"github.com/goodrain/rainbond/util"
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etcdutil "github.com/goodrain/rainbond/util/etcd"
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k8sutil "github.com/goodrain/rainbond/util/k8s"
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)
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//Run start run
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func Run(s *option.GWServer) error {
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logrus.Info("start gateway...")
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errCh := make(chan error, 1)
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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config, err := k8sutil.NewRestConfig(s.K8SConfPath)
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if err != nil {
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return err
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}
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clientset, err := kubernetes.NewForConfig(config)
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if err != nil {
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return err
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}
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etcdClientArgs := &etcdutil.ClientArgs{
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Endpoints: s.Config.EtcdEndpoint,
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CaFile: s.Config.EtcdCaFile,
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CertFile: s.Config.EtcdCertFile,
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KeyFile: s.Config.EtcdKeyFile,
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DialTimeout: time.Duration(s.Config.EtcdTimeout) * time.Second,
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}
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etcdCli, err := etcdutil.NewClient(ctx, etcdClientArgs)
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if err != nil {
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return err
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}
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//create cluster node manage
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logrus.Debug("start creating node manager")
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node, err := cluster.CreateNodeManager(ctx, s.Config, etcdCli)
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if err != nil {
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return fmt.Errorf("create gateway node manage failure %s", err.Error())
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}
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if err := node.Start(); err != nil {
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return fmt.Errorf("start node manager: %v", err)
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}
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defer node.Stop()
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reg := prometheus.NewRegistry()
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reg.MustRegister(prometheus.NewGoCollector())
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reg.MustRegister(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}))
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mc := metric.NewDummyCollector()
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if s.Config.EnableMetrics {
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mc, err = metric.NewCollector(s.NodeName, reg)
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if err != nil {
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logrus.Fatalf("Error creating prometheus collector: %v", err)
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}
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}
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mc.Start()
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gwc, err := controller.NewGWController(ctx, clientset, &s.Config, mc, node)
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if err != nil {
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return err
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}
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if gwc == nil {
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return fmt.Errorf("Fail to new GWController")
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}
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logrus.Debug("start gateway controller")
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if err := gwc.Start(errCh); err != nil {
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return fmt.Errorf("Fail to start GWController %s", err.Error())
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}
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defer gwc.Close()
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mux := chi.NewMux()
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registerHealthz(gwc, mux)
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registerMetrics(reg, mux)
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if s.Debug {
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util.ProfilerSetup(mux)
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}
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go startHTTPServer(s.ListenPorts.Health, mux)
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keepalive, err := discover.CreateKeepAlive(etcdClientArgs, "gateway", s.Config.NodeName,
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s.Config.HostIP, s.ListenPorts.Health)
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if err != nil {
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return err
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}
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logrus.Debug("start keepalive")
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if err := keepalive.Start(); err != nil {
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return err
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}
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defer keepalive.Stop()
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logrus.Info("RBD app gateway start success!")
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term := make(chan os.Signal)
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signal.Notify(term, os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT)
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select {
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case <-term:
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logrus.Warn("Received SIGTERM, exiting gracefully...")
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case err := <-errCh:
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logrus.Errorf("Received a error %s, exiting gracefully...", err.Error())
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}
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logrus.Info("See you next time!")
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return nil
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}
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func registerHealthz(gc *controller.GWController, mux *chi.Mux) {
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// expose health check endpoint (/healthz)
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healthz.InstallHandler(mux,
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healthz.PingHealthz,
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gc,
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)
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}
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func registerMetrics(reg *prometheus.Registry, mux *chi.Mux) {
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mux.Handle(
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"/metrics",
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promhttp.HandlerFor(reg, promhttp.HandlerOpts{}),
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)
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}
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func startHTTPServer(port int, mux *chi.Mux) {
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server := &http.Server{
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Addr: fmt.Sprintf(":%v", port),
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Handler: mux,
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ReadTimeout: 10 * time.Second,
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ReadHeaderTimeout: 10 * time.Second,
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WriteTimeout: 300 * time.Second,
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IdleTimeout: 120 * time.Second,
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}
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logrus.Fatal(server.ListenAndServe())
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}
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