forked from goodrain/rainbond
/
server.go
139 lines (125 loc) · 4.44 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 (
"os"
"os/signal"
"syscall"
"github.com/Sirupsen/logrus"
"github.com/eapache/channels"
"github.com/goodrain/rainbond/cmd/worker/option"
"github.com/goodrain/rainbond/db"
"github.com/goodrain/rainbond/db/config"
"github.com/goodrain/rainbond/event"
"github.com/goodrain/rainbond/worker/appm"
"github.com/goodrain/rainbond/worker/appm/controller"
"github.com/goodrain/rainbond/worker/appm/store"
"github.com/goodrain/rainbond/worker/discover"
"github.com/goodrain/rainbond/worker/master"
"github.com/goodrain/rainbond/worker/monitor"
"github.com/goodrain/rainbond/worker/server"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
)
//Run start run
func Run(s *option.Worker) error {
errChan := make(chan error, 2)
dbconfig := config.Config{
DBType: s.Config.DBType,
MysqlConnectionInfo: s.Config.MysqlConnectionInfo,
EtcdEndPoints: s.Config.EtcdEndPoints,
EtcdTimeout: s.Config.EtcdTimeout,
}
//step 1:db manager init ,event log client init
if err := db.CreateManager(dbconfig); err != nil {
return err
}
defer db.CloseManager()
if err := event.NewManager(event.EventConfig{
EventLogServers: s.Config.EventLogServers,
DiscoverAddress: s.Config.EtcdEndPoints,
}); err != nil {
return err
}
defer event.CloseManager()
//step 2 : create kube client and etcd client
c, err := clientcmd.BuildConfigFromFlags("", s.Config.KubeConfig)
if err != nil {
logrus.Error("read kube config file error.", err)
return err
}
clientset, err := kubernetes.NewForConfig(c)
if err != nil {
logrus.Error("create kube api client error", err)
return err
}
s.Config.KubeClient = clientset
//etcdCli, err := client.New(client.Config{})
//step 3: create resource store
startCh := channels.NewRingChannel(1024) // TODO: why 1024?
updateCh := channels.NewRingChannel(1024)
probeCh := channels.NewRingChannel(1024)
cachestore := store.NewStore(clientset, db.GetManager(), s.Config, startCh, probeCh)
appmController := appm.NewAPPMController(clientset, cachestore, startCh, updateCh, probeCh)
if err := appmController.Start(); err != nil {
logrus.Errorf("error starting appm controller: %v", err)
}
defer appmController.Stop()
if err := cachestore.Start(); err != nil {
logrus.Error("start kube cache store error", err)
return err
}
//step 4: create controller manager
controllerManager := controller.NewManager(cachestore, clientset)
defer controllerManager.Stop()
//step 5 : start runtime master
masterCon, err := master.NewMasterController(s.Config, cachestore)
if err != nil {
return err
}
if err := masterCon.Start(); err != nil {
return err
}
defer masterCon.Stop()
//step 6 : create discover module
taskManager := discover.NewTaskManager(s.Config, cachestore, controllerManager, startCh)
if err := taskManager.Start(); err != nil {
return err
}
defer taskManager.Stop()
//step 7: start app runtimer server
runtimeServer := server.CreaterRuntimeServer(s.Config, cachestore, updateCh)
runtimeServer.Start(errChan)
//step 8: create application use resource exporter.
exporterManager := monitor.NewManager(s.Config, masterCon)
if err := exporterManager.Start(); err != nil {
return err
}
defer exporterManager.Stop()
logrus.Info("worker begin running...")
//step finally: listen Signal
term := make(chan os.Signal)
signal.Notify(term, os.Interrupt, syscall.SIGTERM)
select {
case <-term:
logrus.Warn("Received SIGTERM, exiting gracefully...")
case err := <-errChan:
if err != nil {
logrus.Errorf("Received a error %s, exiting gracefully...", err.Error())
}
}
logrus.Info("See you next time!")
return nil
}