mirror of
https://gitee.com/rainbond/Rainbond.git
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156 lines
4.5 KiB
Go
156 lines
4.5 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 discover
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import (
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"context"
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"fmt"
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"os"
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"strings"
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"time"
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"github.com/Sirupsen/logrus"
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"github.com/goodrain/rainbond/builder/exector"
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"github.com/goodrain/rainbond/cmd/builder/option"
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"github.com/goodrain/rainbond/mq/api/grpc/pb"
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"github.com/goodrain/rainbond/mq/client"
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grpc1 "google.golang.org/grpc"
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)
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//WTOPIC is builder
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const WTOPIC string = "builder"
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var healthStatus = make(map[string]string, 1)
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//TaskManager task
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type TaskManager struct {
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ctx, discoverCtx context.Context
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cancel, discoverCancel context.CancelFunc
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config option.Config
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client client.MQClient
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exec exector.Manager
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callbackChan chan *pb.TaskMessage
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}
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//NewTaskManager return *TaskManager
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func NewTaskManager(c option.Config, client client.MQClient, exec exector.Manager) *TaskManager {
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ctx, cancel := context.WithCancel(context.Background())
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discoverCtx, discoverCancel := context.WithCancel(ctx)
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healthStatus["status"] = "health"
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healthStatus["info"] = "builder service health"
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callbackChan := make(chan *pb.TaskMessage, 100)
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taskManager := &TaskManager{
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discoverCtx: discoverCtx,
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discoverCancel: discoverCancel,
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ctx: ctx,
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cancel: cancel,
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config: c,
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client: client,
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exec: exec,
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callbackChan: callbackChan,
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}
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exec.SetReturnTaskChan(taskManager.callback)
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return taskManager
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}
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//Start 启动
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func (t *TaskManager) Start(errChan chan error) error {
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go t.Do(errChan)
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logrus.Info("start discover success.")
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return nil
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}
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func (t *TaskManager) callback(task *pb.TaskMessage) {
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ctx, cancel := context.WithCancel(t.ctx)
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defer cancel()
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_, err := t.client.Enqueue(ctx, &pb.EnqueueRequest{
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Topic: client.BuilderTopic,
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Message: task,
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})
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if err != nil {
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logrus.Errorf("callback task to mq failure %s", err.Error())
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}
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logrus.Infof("The build controller returns an indigestible task(%s) to the messaging system", task.TaskId)
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}
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//Do do
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func (t *TaskManager) Do(errChan chan error) {
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hostName, _ := os.Hostname()
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for {
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select {
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case <-t.discoverCtx.Done():
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return
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default:
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ctx, cancel := context.WithCancel(t.discoverCtx)
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data, err := t.client.Dequeue(ctx, &pb.DequeueRequest{Topic: t.config.Topic, ClientHost: hostName + "-builder"})
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cancel()
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if err != nil {
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if grpc1.ErrorDesc(err) == context.DeadlineExceeded.Error() {
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logrus.Warn(err.Error())
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continue
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}
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if grpc1.ErrorDesc(err) == "context canceled" {
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logrus.Warn("grpc dequeue context canceled")
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healthStatus["status"] = "unusual"
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healthStatus["info"] = "grpc dequeue context canceled"
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return
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}
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if grpc1.ErrorDesc(err) == "context timeout" {
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logrus.Warn(err.Error())
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continue
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}
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if strings.Contains(err.Error(), "there is no connection available") {
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errChan <- fmt.Errorf("message dequeue failure %s", err.Error())
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return
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}
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logrus.Errorf("message dequeue failure %s, will retry", err.Error())
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time.Sleep(time.Second * 2)
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continue
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}
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err = t.exec.AddTask(data)
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if err != nil {
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t.callbackChan <- data
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logrus.Error("add task error:", err.Error())
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}
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}
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}
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}
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//Stop 停止
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func (t *TaskManager) Stop() error {
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t.discoverCancel()
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if err := t.exec.Stop(); err != nil {
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logrus.Errorf("stop task exec manager failure %s", err.Error())
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}
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for len(t.callbackChan) > 0 {
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logrus.Infof("waiting callback chan empty")
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time.Sleep(time.Second * 2)
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}
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logrus.Info("discover manager is stoping.")
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t.cancel()
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if t.client != nil {
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t.client.Close()
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}
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return nil
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}
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// HealthCheck 组件的健康检查
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func HealthCheck() map[string]string {
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return healthStatus
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}
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