mirror of https://github.com/ouqiang/gocron
317 lines
8.9 KiB
Go
317 lines
8.9 KiB
Go
package service
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import (
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"github.com/ouqiang/gocron/models"
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"strconv"
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"time"
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"github.com/ouqiang/gocron/modules/logger"
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"github.com/ouqiang/gocron/modules/ssh"
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"github.com/jakecoffman/cron"
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"github.com/ouqiang/gocron/modules/utils"
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"errors"
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"fmt"
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"github.com/ouqiang/gocron/modules/httpclient"
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"github.com/ouqiang/gocron/modules/notify"
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)
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var Cron *cron.Cron
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var runInstance Instance
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// 任务ID作为Key, 不会出现并发写, 不加锁
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type Instance struct {
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Status map[int]bool
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}
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// 是否有任务处于运行中
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func (i *Instance) has(key int) bool {
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running, ok := i.Status[key]
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if ok && running {
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return true
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}
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return false
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}
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func (i *Instance) add(key int) {
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i.Status[key] = true
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}
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func (i *Instance) done(key int) {
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i.Status[key] = false
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}
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type Task struct{}
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type TaskResult struct {
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Result string
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Err error
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RetryTimes int8
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}
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// 初始化任务, 从数据库取出所有任务, 添加到定时任务并运行
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func (task *Task) Initialize() {
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Cron = cron.New()
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Cron.Start()
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runInstance = Instance{make(map[int]bool)}
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taskModel := new(models.Task)
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taskList, err := taskModel.ActiveList()
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if err != nil {
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logger.Error("获取任务列表错误-", err.Error())
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return
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}
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if len(taskList) == 0 {
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logger.Debug("任务列表为空")
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return
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}
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task.BatchAdd(taskList)
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}
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// 批量添加任务
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func (task *Task) BatchAdd(tasks []models.TaskHost) {
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for _, item := range tasks {
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task.Add(item)
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}
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}
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// 添加任务
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func (task *Task) Add(taskModel models.TaskHost) {
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taskFunc := createJob(taskModel)
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if taskFunc == nil {
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logger.Error("创建任务处理Job失败,不支持的任务协议#", taskModel.Protocol)
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return
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}
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cronName := strconv.Itoa(taskModel.Id)
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// Cron任务采用数组存储, 删除任务需遍历数组, 并对数组重新赋值, 任务较多时，有性能问题
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Cron.RemoveJob(cronName)
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err := Cron.AddFunc(taskModel.Spec, taskFunc, cronName)
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if err != nil {
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logger.Error("添加任务到调度器失败#", err)
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}
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}
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// 直接运行任务
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func (task *Task) Run(taskModel models.TaskHost) {
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go createJob(taskModel)()
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}
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type Handler interface {
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Run(taskModel models.TaskHost) (string, error)
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}
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// 本地命令
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type LocalCommandHandler struct {}
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// 运行本地命令
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func (h *LocalCommandHandler) Run(taskModel models.TaskHost) (string, error) {
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if taskModel.Command == "" {
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return "", errors.New("invalid command")
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}
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if utils.IsWindows() {
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return h.runOnWindows(taskModel)
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}
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return h.runOnUnix(taskModel)
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}
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// 执行Windows命令
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func (h *LocalCommandHandler) runOnWindows(taskModel models.TaskHost) (string, error) {
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outputGBK, err := utils.ExecShellWithTimeout(taskModel.Timeout, "cmd", "/C", taskModel.Command)
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// windows平台编码为gbk，需转换为utf8才能入库
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outputUTF8, ok := utils.GBK2UTF8(outputGBK)
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if ok {
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return outputUTF8, err
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}
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return "命令输出转换编码失败(gbk to utf8)", err
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}
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// 执行Unix命令
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func (h *LocalCommandHandler) runOnUnix(taskModel models.TaskHost) (string, error) {
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return utils.ExecShellWithTimeout(taskModel.Timeout, "/bin/bash", "-c", taskModel.Command)
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}
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// HTTP任务
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type HTTPHandler struct{}
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func (h *HTTPHandler) Run(taskModel models.TaskHost) (result string, err error) {
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resp := httpclient.Get(taskModel.Command, taskModel.Timeout)
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// 返回状态码非200，均为失败
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if resp.StatusCode != 200 {
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return resp.Body, errors.New(fmt.Sprintf("HTTP状态码非200-->%d", resp.StatusCode))
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}
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return resp.Body, err
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}
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// SSH-command任务
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type SSHCommandHandler struct{}
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func (h *SSHCommandHandler) Run(taskModel models.TaskHost) (string, error) {
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hostModel := new(models.Host)
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err := hostModel.Find(int(taskModel.HostId))
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if err != nil {
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return "", err
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}
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sshConfig := ssh.SSHConfig{}
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sshConfig.User = hostModel.Username
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sshConfig.Host = hostModel.Name
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sshConfig.Port = hostModel.Port
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sshConfig.ExecTimeout = 5
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sshConfig.AuthType = hostModel.AuthType
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var password string
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var privateKey string
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if hostModel.AuthType == ssh.HostPassword {
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password, err = hostModel.GetPasswordByHost(hostModel.Name)
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if err != nil {
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return "", err
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}
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sshConfig.Password = password
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} else {
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privateKey, err = hostModel.GetPrivateKeyByHost(hostModel.Name)
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if err != nil {
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return "", err
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}
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sshConfig.PrivateKey = privateKey
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}
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return ssh.Exec(sshConfig, taskModel.Command)
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}
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// 创建任务日志
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func createTaskLog(taskModel models.TaskHost, status models.Status) (int64, error) {
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taskLogModel := new(models.TaskLog)
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taskLogModel.TaskId = taskModel.Id
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taskLogModel.Name = taskModel.Task.Name
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taskLogModel.Spec = taskModel.Spec
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taskLogModel.Protocol = taskModel.Protocol
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taskLogModel.Command = taskModel.Command
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taskLogModel.Timeout = taskModel.Timeout
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if taskModel.Protocol == models.TaskSSH {
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taskLogModel.Hostname = taskModel.Alias + "-" + taskModel.Name
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}
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taskLogModel.StartTime = time.Now()
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taskLogModel.Status = status
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insertId, err := taskLogModel.Create()
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return insertId, err
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}
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// 更新任务日志
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func updateTaskLog(taskLogId int64, taskResult TaskResult) (int64, error) {
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taskLogModel := new(models.TaskLog)
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var status models.Status
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var result string = taskResult.Result
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if taskResult.Err != nil {
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result = taskResult.Err.Error() + "\n" + result
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status = models.Failure
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} else {
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status = models.Finish
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}
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return taskLogModel.Update(taskLogId, models.CommonMap{
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"retry_times": taskResult.RetryTimes,
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"status": status,
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"result": result,
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})
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}
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func createJob(taskModel models.TaskHost) cron.FuncJob {
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var handler Handler = createHandler(taskModel)
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if handler == nil {
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return nil
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}
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taskFunc := func() {
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if taskModel.Multi == 0 && runInstance.has(taskModel.Id) {
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createTaskLog(taskModel, models.Cancel)
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return
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}
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if taskModel.Multi == 0 {
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runInstance.add(taskModel.Id)
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defer runInstance.done(taskModel.Id)
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}
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taskLogId, err := createTaskLog(taskModel, models.Running)
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if err != nil {
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logger.Error("任务开始执行#写入任务日志失败-", err)
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return
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}
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taskResult := execJob(handler, taskModel)
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if taskResult.Err != nil {
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taskResult.Result = taskResult.Err.Error() + "\n" + taskResult.Result
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}
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_, err = updateTaskLog(taskLogId, taskResult)
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if err != nil {
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logger.Error("任务结束#更新任务日志失败-", err)
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}
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var statusName string
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var enableNotify bool = true
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// 未开启通知
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if taskModel.NotifyStatus == 0 {
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enableNotify = false;
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} else if taskModel.NotifyStatus == 1 && taskResult.Err == nil {
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// 执行失败才发送通知
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enableNotify = false
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}
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if taskResult.Err != nil {
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statusName = "失败"
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} else {
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statusName = "成功"
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}
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if !enableNotify {
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return
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}
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// 发送通知
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msg := notify.Message{
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"task_type": taskModel.NotifyType,
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"task_receiver_id": taskModel.NotifyReceiverId,
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"name": taskModel.Task.Name,
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"output": taskResult.Result,
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"status": statusName,
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"taskId": taskModel.Id,
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};
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notify.Push(msg)
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}
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return taskFunc
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}
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func createHandler(taskModel models.TaskHost) Handler {
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var handler Handler = nil
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switch taskModel.Protocol {
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case models.TaskHTTP:
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handler = new(HTTPHandler)
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case models.TaskSSH:
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handler = new(SSHCommandHandler)
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case models.TaskLocalCommand:
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handler = new(LocalCommandHandler)
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}
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return handler;
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}
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func execJob(handler Handler, taskModel models.TaskHost) TaskResult {
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// 默认只运行任务一次
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var execTimes int8 = 1
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if (taskModel.RetryTimes > 0) {
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execTimes += taskModel.RetryTimes
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}
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var i int8 = 0
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var output string
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var err error
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for i < execTimes {
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output, err = handler.Run(taskModel)
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if err == nil {
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return TaskResult{Result: output, Err: err, RetryTimes: i}
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}
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i++
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if i < execTimes {
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logger.Warnf("任务执行失败#任务id-%d#重试第%d次#输出-%s#错误-%s", taskModel.Id, i, output, err.Error())
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// 重试间隔时间，每次递增1分钟
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time.Sleep( time.Duration(i) * time.Minute)
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}
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}
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return TaskResult{Result: output, Err: err, RetryTimes: taskModel.RetryTimes}
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} |