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149 lines
5.2 KiB
Go
149 lines
5.2 KiB
Go
// Copyright 2018 gf Author(https://github.com/gogf/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package gcron
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import (
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"github.com/gogf/gf/g/container/gtype"
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"github.com/gogf/gf/g/os/glog"
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"github.com/gogf/gf/g/os/gtimer"
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"github.com/gogf/gf/g/util/gconv"
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"reflect"
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"runtime"
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"time"
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)
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// Timed task entry.
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type Entry struct {
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cron *Cron // Cron object belonged to.
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entry *gtimer.Entry // Associated gtimer.Entry.
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schedule *cronSchedule // Timed schedule object.
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jobName string // Callback function name(address info).
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times *gtype.Int // Running times limit.
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Name string // Entry name.
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Job func() `json:"-"` // Callback function.
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Time time.Time // Registered time.
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}
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// addEntry creates and returns a new Entry object.
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// Param <job> is the callback function for timed task execution.
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// Param <singleton> specifies whether timed task executing in singleton mode.
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// Param <name> names this entry for manual control.
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func (c *Cron) addEntry(pattern string, job func(), singleton bool, name ... string) (*Entry, error) {
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schedule, err := newSchedule(pattern)
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if err != nil {
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return nil, err
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}
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// No limit for <times>, for gtimer checking scheduling every second.
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entry := &Entry {
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cron : c,
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schedule : schedule,
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jobName : runtime.FuncForPC(reflect.ValueOf(job).Pointer()).Name(),
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times : gtype.NewInt(gDEFAULT_TIMES),
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Job : job,
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Time : time.Now(),
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}
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if len(name) > 0 {
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entry.Name = name[0]
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} else {
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entry.Name = "gcron-" + gconv.String(c.idGen.Add(1))
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}
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// When you add a scheduled task, you cannot allow it to run.
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// It cannot start running when added to gtimer.
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// It should start running after the entry is added to the entries map,
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// to avoid the task from running during adding where the entries
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// does not have the entry information, which might cause panic.
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entry.entry = gtimer.AddEntry(time.Second, entry.check, singleton, -1, gtimer.STATUS_STOPPED)
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c.entries.Set(entry.Name, entry)
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entry.entry.Start()
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return entry, nil
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}
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// IsSingleton return whether this entry is a singleton timed task.
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func (entry *Entry) IsSingleton() bool {
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return entry.entry.IsSingleton()
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}
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// SetSingleton sets the entry running in singleton mode.
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func (entry *Entry) SetSingleton(enabled bool) {
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entry.entry.SetSingleton(true)
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}
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// SetTimes sets the times which the entry can run.
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func (entry *Entry) SetTimes(times int) {
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entry.times.Set(times)
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}
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// Status returns the status of entry.
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func (entry *Entry) Status() int {
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return entry.entry.Status()
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}
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// SetStatus sets the status of the entry.
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func (entry *Entry) SetStatus(status int) int {
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return entry.entry.SetStatus(status)
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}
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// Start starts running the entry.
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func (entry *Entry) Start() {
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entry.entry.Start()
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}
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// Stop stops running the entry.
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func (entry *Entry) Stop() {
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entry.entry.Stop()
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}
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// Close stops and removes the entry from cron.
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func (entry *Entry) Close() {
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entry.cron.entries.Remove(entry.Name)
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entry.entry.Close()
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}
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// Timed task check execution.
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// The running times limits feature is implemented by gcron.Entry and cannot be implemented by gtimer.Entry.
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// gcron.Entry relies on gtimer to implement a scheduled task check for gcron.Entry per second.
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func (entry *Entry) check() {
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if entry.schedule.meet(time.Now()) {
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path := entry.cron.GetLogPath()
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level := entry.cron.GetLogLevel()
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switch entry.cron.status.Val() {
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case STATUS_STOPPED:
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return
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case STATUS_CLOSED:
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glog.Path(path).Level(level).Debugfln("[gcron] %s(%s) %s removed", entry.Name, entry.schedule.pattern, entry.jobName)
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entry.Close()
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case STATUS_READY: fallthrough
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case STATUS_RUNNING:
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// Running times check.
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times := entry.times.Add(-1)
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if times <= 0 {
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if entry.entry.SetStatus(STATUS_CLOSED) == STATUS_CLOSED || times < 0 {
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return
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}
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}
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if times < 2000000000 && times > 1000000000 {
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entry.times.Set(gDEFAULT_TIMES)
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}
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glog.Path(path).Level(level).Debugfln("[gcron] %s(%s) %s start", entry.Name, entry.schedule.pattern, entry.jobName)
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defer func() {
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if err := recover(); err != nil {
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glog.Path(path).Level(level).Errorfln("[gcron] %s(%s) %s end with error: %v", entry.Name, entry.schedule.pattern, entry.jobName, err)
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} else {
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glog.Path(path).Level(level).Debugfln("[gcron] %s(%s) %s end", entry.Name, entry.schedule.pattern, entry.jobName)
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}
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if entry.entry.Status() == STATUS_CLOSED {
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entry.Close()
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}
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}()
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entry.Job()
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}
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}
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}
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