mirror of
https://gitee.com/rainbond/Rainbond.git
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98 lines
2.3 KiB
Go
98 lines
2.3 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 executor
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import (
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"github.com/goodrain/rainbond/worker/executor/task"
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"fmt"
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"runtime/debug"
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)
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//Worker 工作器
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type Worker interface {
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Start()
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Cancel() error
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RollBack() error
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Status() string
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}
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type woker struct {
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status string
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task task.Task
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manager *manager
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}
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//newWorker new worker
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func newWorker(manager *manager, task task.Task) Worker {
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w := &woker{
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status: "create",
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task: task,
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manager: manager,
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}
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return w
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}
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func (w *woker) Start() {
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defer func() {
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w.manager.removeWorker(w.task.TaskID(), w.task.Logger().Event())
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}()
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defer func() {
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if err := recover(); err != nil {
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w.task.RunError(fmt.Errorf("worker recover %v", err))
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debug.PrintStack()
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}
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}()
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w.task.BeforeRun()
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defer func() {
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if w.task != nil {
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w.task.AfterRun()
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}
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if w.manager != nil {
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//移除worker
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w.manager.removeWorker(w.task.TaskID(), w.task.Logger().Event())
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}
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}()
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w.status = "running"
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if err := w.task.Run(); err != nil {
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w.status = "error"
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w.task.RunError(err)
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} else {
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w.status = "success"
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w.task.RunSuccess()
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}
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}
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//Cancel 任务取消
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func (w *woker) Cancel() error {
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w.task.Stop()
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return nil
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}
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//RollBack 任务回滚
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//多阻塞步骤，长时间任务支持回滚，例如大量实例应用的升级操作
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//回滚粒度为一个实例的操作
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func (w *woker) RollBack() error {
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w.task.RollBack()
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return nil
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}
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func (w *woker) Status() string {
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return w.status
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}
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