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新增gcron定时任务包

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john 2018-10-22 16:53:43 +08:00
parent 2d9df2f544
commit c5a03fca83
16 changed files with 2034 additions and 0 deletions
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1
g/container/gtype/int.go
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@ -33,6 +33,7 @@ func (t *Int) Val() int {
return int(atomic.LoadInt64(&t.val))
}
// 数值增加delta，并返回新的数值
func (t *Int) Add(delta int) int {
return int(atomic.AddInt64(&t.val, int64(delta)))
}

60
g/os/gcron/gcron.go Normal file
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@ -0,0 +1,60 @@
// Copyright 2018 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://gitee.com/johng/gf.
// 定时任务.
package gcron
import (
"gitee.com/johng/gf/g/container/garray"
"gitee.com/johng/gf/g/container/gtype"
"gitee.com/johng/gf/g/os/gtime"
"gitee.com/johng/gf/third/github.com/robfig/cron"
"reflect"
"runtime"
)
// 定时任务项
type Entry struct {
Spec string // 注册定时任务时间格式
Cmd string // 注册定时任务名称
Time *gtime.Time // 注册时间
}
var (
// 默认的cron管理对象
defaultCron = cron.New()
// 当前cron的运行状态(0: 未执行; >0: 运行中)
cronStatus = gtype.NewInt()
// 注册定时任务项
cronEntries = garray.New(0, 0, true)
)
// 添加执行方法
func Add(spec string, f func()) error {
// 底层的AddFunc是并发安全的
err := defaultCron.AddFunc(spec, f)
if err == nil {
if cronStatus.Add(1) == 1 {
go defaultCron.Run()
}
cronEntries.Append(Entry{
Spec : spec,
Cmd : runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name(),
Time : gtime.Now(),
})
}
return err
}
// 获取所有已注册的定时任务项
func Entries() []Entry {
length := cronEntries.Len()
entries := make([]Entry, length)
for i := 0; i < length; i++ {
entries[i] = cronEntries.Get(i).(Entry)
}
return entries
}

17
geg/os/gcron/gcron.go Normal file
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@ -0,0 +1,17 @@
package main
import (
"fmt"
"gitee.com/johng/gf/g"
"gitee.com/johng/gf/g/os/gcron"
"time"
)
func main() {
gcron.Add("0 30 * * * *", func() { fmt.Println("Every hour on the half hour") })
gcron.Add("* * * * * *", func() { fmt.Println("Every second") })
gcron.Add("@hourly", func() { fmt.Println("Every hour") })
gcron.Add("@every 1h30m", func() { fmt.Println("Every hour thirty") })
g.Dump(gcron.Entries())
time.Sleep(3*time.Second)
}

22
third/github.com/robfig/cron/.gitignore vendored Normal file
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@ -0,0 +1,22 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe

1
third/github.com/robfig/cron/.travis.yml Normal file
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@ -0,0 +1 @@
language: go

21
third/github.com/robfig/cron/LICENSE Normal file
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@ -0,0 +1,21 @@
Copyright (C) 2012 Rob Figueiredo
All Rights Reserved.
MIT LICENSE
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

6
third/github.com/robfig/cron/README.md Normal file
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@ -0,0 +1,6 @@
[![GoDoc](http://godoc.org/github.com/robfig/cron?status.png)](http://godoc.org/github.com/robfig/cron)
[![Build Status](https://travis-ci.org/robfig/cron.svg?branch=master)](https://travis-ci.org/robfig/cron)
# cron
Documentation here: https://godoc.org/github.com/robfig/cron

27
third/github.com/robfig/cron/constantdelay.go Normal file
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@ -0,0 +1,27 @@
package cron
import "time"
// ConstantDelaySchedule represents a simple recurring duty cycle, e.g. "Every 5 minutes".
// It does not support jobs more frequent than once a second.
type ConstantDelaySchedule struct {
Delay time.Duration
}
// Every returns a crontab Schedule that activates once every duration.
// Delays of less than a second are not supported (will round up to 1 second).
// Any fields less than a Second are truncated.
func Every(duration time.Duration) ConstantDelaySchedule {
if duration < time.Second {
duration = time.Second
}
return ConstantDelaySchedule{
Delay: duration - time.Duration(duration.Nanoseconds())%time.Second,
}
}
// Next returns the next time this should be run.
// This rounds so that the next activation time will be on the second.
func (schedule ConstantDelaySchedule) Next(t time.Time) time.Time {
return t.Add(schedule.Delay - time.Duration(t.Nanosecond())*time.Nanosecond)
}

54
third/github.com/robfig/cron/constantdelay_test.go Normal file
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@ -0,0 +1,54 @@
package cron
import (
"testing"
"time"
)
func TestConstantDelayNext(t *testing.T) {
tests := []struct {
time string
delay time.Duration
expected string
}{
// Simple cases
{"Mon Jul 9 14:45 2012", 15*time.Minute + 50*time.Nanosecond, "Mon Jul 9 15:00 2012"},
{"Mon Jul 9 14:59 2012", 15 * time.Minute, "Mon Jul 9 15:14 2012"},
{"Mon Jul 9 14:59:59 2012", 15 * time.Minute, "Mon Jul 9 15:14:59 2012"},
// Wrap around hours
{"Mon Jul 9 15:45 2012", 35 * time.Minute, "Mon Jul 9 16:20 2012"},
// Wrap around days
{"Mon Jul 9 23:46 2012", 14 * time.Minute, "Tue Jul 10 00:00 2012"},
{"Mon Jul 9 23:45 2012", 35 * time.Minute, "Tue Jul 10 00:20 2012"},
{"Mon Jul 9 23:35:51 2012", 44*time.Minute + 24*time.Second, "Tue Jul 10 00:20:15 2012"},
{"Mon Jul 9 23:35:51 2012", 25*time.Hour + 44*time.Minute + 24*time.Second, "Thu Jul 11 01:20:15 2012"},
// Wrap around months
{"Mon Jul 9 23:35 2012", 91*24*time.Hour + 25*time.Minute, "Thu Oct 9 00:00 2012"},
// Wrap around minute, hour, day, month, and year
{"Mon Dec 31 23:59:45 2012", 15 * time.Second, "Tue Jan 1 00:00:00 2013"},
// Round to nearest second on the delay
{"Mon Jul 9 14:45 2012", 15*time.Minute + 50*time.Nanosecond, "Mon Jul 9 15:00 2012"},
// Round up to 1 second if the duration is less.
{"Mon Jul 9 14:45:00 2012", 15 * time.Millisecond, "Mon Jul 9 14:45:01 2012"},
// Round to nearest second when calculating the next time.
{"Mon Jul 9 14:45:00.005 2012", 15 * time.Minute, "Mon Jul 9 15:00 2012"},
// Round to nearest second for both.
{"Mon Jul 9 14:45:00.005 2012", 15*time.Minute + 50*time.Nanosecond, "Mon Jul 9 15:00 2012"},
}
for _, c := range tests {
actual := Every(c.delay).Next(getTime(c.time))
expected := getTime(c.expected)
if actual != expected {
t.Errorf("%s, \"%s\": (expected) %v != %v (actual)", c.time, c.delay, expected, actual)
}
}
}

259
third/github.com/robfig/cron/cron.go Normal file
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@ -0,0 +1,259 @@
package cron
import (
"log"
"runtime"
"sort"
"time"
)
// Cron keeps track of any number of entries, invoking the associated func as
// specified by the schedule. It may be started, stopped, and the entries may
// be inspected while running.
type Cron struct {
entries []*Entry
stop chan struct{}
add chan *Entry
snapshot chan []*Entry
running bool
ErrorLog *log.Logger
location *time.Location
}
// Job is an interface for submitted cron jobs.
type Job interface {
Run()
}
// The Schedule describes a job's duty cycle.
type Schedule interface {
// Return the next activation time, later than the given time.
// Next is invoked initially, and then each time the job is run.
Next(time.Time) time.Time
}
// Entry consists of a schedule and the func to execute on that schedule.
type Entry struct {
// The schedule on which this job should be run.
Schedule Schedule
// The next time the job will run. This is the zero time if Cron has not been
// started or this entry's schedule is unsatisfiable
Next time.Time
// The last time this job was run. This is the zero time if the job has never
// been run.
Prev time.Time
// The Job to run.
Job Job
}
// byTime is a wrapper for sorting the entry array by time
// (with zero time at the end).
type byTime []*Entry
func (s byTime) Len() int { return len(s) }
func (s byTime) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func (s byTime) Less(i, j int) bool {
// Two zero times should return false.
// Otherwise, zero is "greater" than any other time.
// (To sort it at the end of the list.)
if s[i].Next.IsZero() {
return false
}
if s[j].Next.IsZero() {
return true
}
return s[i].Next.Before(s[j].Next)
}
// New returns a new Cron job runner, in the Local time zone.
func New() *Cron {
return NewWithLocation(time.Now().Location())
}
// NewWithLocation returns a new Cron job runner.
func NewWithLocation(location *time.Location) *Cron {
return &Cron{
entries: nil,
add: make(chan *Entry),
stop: make(chan struct{}),
snapshot: make(chan []*Entry),
running: false,
ErrorLog: nil,
location: location,
}
}
// A wrapper that turns a func() into a cron.Job
type FuncJob func()
func (f FuncJob) Run() { f() }
// AddFunc adds a func to the Cron to be run on the given schedule.
func (c *Cron) AddFunc(spec string, cmd func()) error {
return c.AddJob(spec, FuncJob(cmd))
}
// AddJob adds a Job to the Cron to be run on the given schedule.
func (c *Cron) AddJob(spec string, cmd Job) error {
schedule, err := Parse(spec)
if err != nil {
return err
}
c.Schedule(schedule, cmd)
return nil
}
// Schedule adds a Job to the Cron to be run on the given schedule.
func (c *Cron) Schedule(schedule Schedule, cmd Job) {
entry := &Entry{
Schedule: schedule,
Job: cmd,
}
if !c.running {
c.entries = append(c.entries, entry)
return
}
c.add <- entry
}
// Entries returns a snapshot of the cron entries.
func (c *Cron) Entries() []*Entry {
if c.running {
c.snapshot <- nil
x := <-c.snapshot
return x
}
return c.entrySnapshot()
}
// Location gets the time zone location
func (c *Cron) Location() *time.Location {
return c.location
}
// Start the cron scheduler in its own go-routine, or no-op if already started.
func (c *Cron) Start() {
if c.running {
return
}
c.running = true
go c.run()
}
// Run the cron scheduler, or no-op if already running.
func (c *Cron) Run() {
if c.running {
return
}
c.running = true
c.run()
}
func (c *Cron) runWithRecovery(j Job) {
defer func() {
if r := recover(); r != nil {
const size = 64 << 10
buf := make([]byte, size)
buf = buf[:runtime.Stack(buf, false)]
c.logf("cron: panic running job: %v\n%s", r, buf)
}
}()
j.Run()
}
// Run the scheduler. this is private just due to the need to synchronize
// access to the 'running' state variable.
func (c *Cron) run() {
// Figure out the next activation times for each entry.
now := c.now()
for _, entry := range c.entries {
entry.Next = entry.Schedule.Next(now)
}
for {
// Determine the next entry to run.
sort.Sort(byTime(c.entries))
var timer *time.Timer
if len(c.entries) == 0 || c.entries[0].Next.IsZero() {
// If there are no entries yet, just sleep - it still handles new entries
// and stop requests.
timer = time.NewTimer(100000 * time.Hour)
} else {
timer = time.NewTimer(c.entries[0].Next.Sub(now))
}
for {
select {
case now = <-timer.C:
now = now.In(c.location)
// Run every entry whose next time was less than now
for _, e := range c.entries {
if e.Next.After(now) || e.Next.IsZero() {
break
}
go c.runWithRecovery(e.Job)
e.Prev = e.Next
e.Next = e.Schedule.Next(now)
}
case newEntry := <-c.add:
timer.Stop()
now = c.now()
newEntry.Next = newEntry.Schedule.Next(now)
c.entries = append(c.entries, newEntry)
case <-c.snapshot:
c.snapshot <- c.entrySnapshot()
continue
case <-c.stop:
timer.Stop()
return
}
break
}
}
}
// Logs an error to stderr or to the configured error log
func (c *Cron) logf(format string, args ...interface{}) {
if c.ErrorLog != nil {
c.ErrorLog.Printf(format, args...)
} else {
log.Printf(format, args...)
}
}
// Stop stops the cron scheduler if it is running; otherwise it does nothing.
func (c *Cron) Stop() {
if !c.running {
return
}
c.stop <- struct{}{}
c.running = false
}
// entrySnapshot returns a copy of the current cron entry list.
func (c *Cron) entrySnapshot() []*Entry {
entries := []*Entry{}
for _, e := range c.entries {
entries = append(entries, &Entry{
Schedule: e.Schedule,
Next: e.Next,
Prev: e.Prev,
Job: e.Job,
})
}
return entries
}
// now returns current time in c location
func (c *Cron) now() time.Time {
return time.Now().In(c.location)
}

416
third/github.com/robfig/cron/cron_test.go Normal file
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@ -0,0 +1,416 @@
package cron
import (
"fmt"
"sync"
"testing"
"time"
)
// Many tests schedule a job for every second, and then wait at most a second
// for it to run. This amount is just slightly larger than 1 second to
// compensate for a few milliseconds of runtime.
const OneSecond = 1*time.Second + 10*time.Millisecond
func TestFuncPanicRecovery(t *testing.T) {
cron := New()
cron.Start()
defer cron.Stop()
cron.AddFunc("* * * * * ?", func() { panic("YOLO") })
select {
case <-time.After(OneSecond):
return
}
}
type DummyJob struct{}
func (d DummyJob) Run() {
panic("YOLO")
}
func TestJobPanicRecovery(t *testing.T) {
var job DummyJob
cron := New()
cron.Start()
defer cron.Stop()
cron.AddJob("* * * * * ?", job)
select {
case <-time.After(OneSecond):
return
}
}
// Start and stop cron with no entries.
func TestNoEntries(t *testing.T) {
cron := New()
cron.Start()
select {
case <-time.After(OneSecond):
t.Fatal("expected cron will be stopped immediately")
case <-stop(cron):
}
}
// Start, stop, then add an entry. Verify entry doesn't run.
func TestStopCausesJobsToNotRun(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.Start()
cron.Stop()
cron.AddFunc("* * * * * ?", func() { wg.Done() })
select {
case <-time.After(OneSecond):
// No job ran!
case <-wait(wg):
t.Fatal("expected stopped cron does not run any job")
}
}
// Add a job, start cron, expect it runs.
func TestAddBeforeRunning(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Start()
defer cron.Stop()
// Give cron 2 seconds to run our job (which is always activated).
select {
case <-time.After(OneSecond):
t.Fatal("expected job runs")
case <-wait(wg):
}
}
// Start cron, add a job, expect it runs.
func TestAddWhileRunning(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.Start()
defer cron.Stop()
cron.AddFunc("* * * * * ?", func() { wg.Done() })
select {
case <-time.After(OneSecond):
t.Fatal("expected job runs")
case <-wait(wg):
}
}
// Test for #34. Adding a job after calling start results in multiple job invocations
func TestAddWhileRunningWithDelay(t *testing.T) {
cron := New()
cron.Start()
defer cron.Stop()
time.Sleep(5 * time.Second)
var calls = 0
cron.AddFunc("* * * * * *", func() { calls += 1 })
<-time.After(OneSecond)
if calls != 1 {
t.Errorf("called %d times, expected 1\n", calls)
}
}
// Test timing with Entries.
func TestSnapshotEntries(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.AddFunc("@every 2s", func() { wg.Done() })
cron.Start()
defer cron.Stop()
// Cron should fire in 2 seconds. After 1 second, call Entries.
select {
case <-time.After(OneSecond):
cron.Entries()
}
// Even though Entries was called, the cron should fire at the 2 second mark.
select {
case <-time.After(OneSecond):
t.Error("expected job runs at 2 second mark")
case <-wait(wg):
}
}
// Test that the entries are correctly sorted.
// Add a bunch of long-in-the-future entries, and an immediate entry, and ensure
// that the immediate entry runs immediately.
// Also: Test that multiple jobs run in the same instant.
func TestMultipleEntries(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(2)
cron := New()
cron.AddFunc("0 0 0 1 1 ?", func() {})
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.AddFunc("0 0 0 31 12 ?", func() {})
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Start()
defer cron.Stop()
select {
case <-time.After(OneSecond):
t.Error("expected job run in proper order")
case <-wait(wg):
}
}
// Test running the same job twice.
func TestRunningJobTwice(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(2)
cron := New()
cron.AddFunc("0 0 0 1 1 ?", func() {})
cron.AddFunc("0 0 0 31 12 ?", func() {})
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Start()
defer cron.Stop()
select {
case <-time.After(2 * OneSecond):
t.Error("expected job fires 2 times")
case <-wait(wg):
}
}
func TestRunningMultipleSchedules(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(2)
cron := New()
cron.AddFunc("0 0 0 1 1 ?", func() {})
cron.AddFunc("0 0 0 31 12 ?", func() {})
cron.AddFunc("* * * * * ?", func() { wg.Done() })
cron.Schedule(Every(time.Minute), FuncJob(func() {}))
cron.Schedule(Every(time.Second), FuncJob(func() { wg.Done() }))
cron.Schedule(Every(time.Hour), FuncJob(func() {}))
cron.Start()
defer cron.Stop()
select {
case <-time.After(2 * OneSecond):
t.Error("expected job fires 2 times")
case <-wait(wg):
}
}
// Test that the cron is run in the local time zone (as opposed to UTC).
func TestLocalTimezone(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(2)
now := time.Now()
spec := fmt.Sprintf("%d,%d %d %d %d %d ?",
now.Second()+1, now.Second()+2, now.Minute(), now.Hour(), now.Day(), now.Month())
cron := New()
cron.AddFunc(spec, func() { wg.Done() })
cron.Start()
defer cron.Stop()
select {
case <-time.After(OneSecond * 2):
t.Error("expected job fires 2 times")
case <-wait(wg):
}
}
// Test that the cron is run in the given time zone (as opposed to local).
func TestNonLocalTimezone(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(2)
loc, err := time.LoadLocation("Atlantic/Cape_Verde")
if err != nil {
fmt.Printf("Failed to load time zone Atlantic/Cape_Verde: %+v", err)
t.Fail()
}
now := time.Now().In(loc)
spec := fmt.Sprintf("%d,%d %d %d %d %d ?",
now.Second()+1, now.Second()+2, now.Minute(), now.Hour(), now.Day(), now.Month())
cron := NewWithLocation(loc)
cron.AddFunc(spec, func() { wg.Done() })
cron.Start()
defer cron.Stop()
select {
case <-time.After(OneSecond * 2):
t.Error("expected job fires 2 times")
case <-wait(wg):
}
}
// Test that calling stop before start silently returns without
// blocking the stop channel.
func TestStopWithoutStart(t *testing.T) {
cron := New()
cron.Stop()
}
type testJob struct {
wg *sync.WaitGroup
name string
}
func (t testJob) Run() {
t.wg.Done()
}
// Test that adding an invalid job spec returns an error
func TestInvalidJobSpec(t *testing.T) {
cron := New()
err := cron.AddJob("this will not parse", nil)
if err == nil {
t.Errorf("expected an error with invalid spec, got nil")
}
}
// Test blocking run method behaves as Start()
func TestBlockingRun(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.AddFunc("* * * * * ?", func() { wg.Done() })
var unblockChan = make(chan struct{})
go func() {
cron.Run()
close(unblockChan)
}()
defer cron.Stop()
select {
case <-time.After(OneSecond):
t.Error("expected job fires")
case <-unblockChan:
t.Error("expected that Run() blocks")
case <-wait(wg):
}
}
// Test that double-running is a no-op
func TestStartNoop(t *testing.T) {
var tickChan = make(chan struct{}, 2)
cron := New()
cron.AddFunc("* * * * * ?", func() {
tickChan <- struct{}{}
})
cron.Start()
defer cron.Stop()
// Wait for the first firing to ensure the runner is going
<-tickChan
cron.Start()
<-tickChan
// Fail if this job fires again in a short period, indicating a double-run
select {
case <-time.After(time.Millisecond):
case <-tickChan:
t.Error("expected job fires exactly twice")
}
}
// Simple test using Runnables.
func TestJob(t *testing.T) {
wg := &sync.WaitGroup{}
wg.Add(1)
cron := New()
cron.AddJob("0 0 0 30 Feb ?", testJob{wg, "job0"})
cron.AddJob("0 0 0 1 1 ?", testJob{wg, "job1"})
cron.AddJob("* * * * * ?", testJob{wg, "job2"})
cron.AddJob("1 0 0 1 1 ?", testJob{wg, "job3"})
cron.Schedule(Every(5*time.Second+5*time.Nanosecond), testJob{wg, "job4"})
cron.Schedule(Every(5*time.Minute), testJob{wg, "job5"})
cron.Start()
defer cron.Stop()
select {
case <-time.After(OneSecond):
t.FailNow()
case <-wait(wg):
}
// Ensure the entries are in the right order.
expecteds := []string{"job2", "job4", "job5", "job1", "job3", "job0"}
var actuals []string
for _, entry := range cron.Entries() {
actuals = append(actuals, entry.Job.(testJob).name)
}
for i, expected := range expecteds {
if actuals[i] != expected {
t.Fatalf("Jobs not in the right order. (expected) %s != %s (actual)", expecteds, actuals)
}
}
}
type ZeroSchedule struct{}
func (*ZeroSchedule) Next(time.Time) time.Time {
return time.Time{}
}
// Tests that job without time does not run
func TestJobWithZeroTimeDoesNotRun(t *testing.T) {
cron := New()
calls := 0
cron.AddFunc("* * * * * *", func() { calls += 1 })
cron.Schedule(new(ZeroSchedule), FuncJob(func() { t.Error("expected zero task will not run") }))
cron.Start()
defer cron.Stop()
<-time.After(OneSecond)
if calls != 1 {
t.Errorf("called %d times, expected 1\n", calls)
}
}
func wait(wg *sync.WaitGroup) chan bool {
ch := make(chan bool)
go func() {
wg.Wait()
ch <- true
}()
return ch
}
func stop(cron *Cron) chan bool {
ch := make(chan bool)
go func() {
cron.Stop()
ch <- true
}()
return ch
}

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/*
Package cron implements a cron spec parser and job runner.
Usage
Callers may register Funcs to be invoked on a given schedule. Cron will run
them in their own goroutines.
c := cron.New()
c.AddFunc("0 30 * * * *", func() { fmt.Println("Every hour on the half hour") })
c.AddFunc("@hourly", func() { fmt.Println("Every hour") })
c.AddFunc("@every 1h30m", func() { fmt.Println("Every hour thirty") })
c.Start()
..
// Funcs are invoked in their own goroutine, asynchronously.
...
// Funcs may also be added to a running Cron
c.AddFunc("@daily", func() { fmt.Println("Every day") })
..
// Inspect the cron job entries' next and previous run times.
inspect(c.Entries())
..
c.Stop() // Stop the scheduler (does not stop any jobs already running).
CRON Expression Format
A cron expression represents a set of times, using 6 space-separated fields.
Field name | Mandatory? | Allowed values | Allowed special characters
---------- | ---------- | -------------- | --------------------------
Seconds | Yes | 0-59 | * / , -
Minutes | Yes | 0-59 | * / , -
Hours | Yes | 0-23 | * / , -
Day of month | Yes | 1-31 | * / , - ?
Month | Yes | 1-12 or JAN-DEC | * / , -
Day of week | Yes | 0-6 or SUN-SAT | * / , - ?
Note: Month and Day-of-week field values are case insensitive. "SUN", "Sun",
and "sun" are equally accepted.
Special Characters
Asterisk ( * )
The asterisk indicates that the cron expression will match for all values of the
field; e.g., using an asterisk in the 5th field (month) would indicate every
month.
Slash ( / )
Slashes are used to describe increments of ranges. For example 3-59/15 in the
1st field (minutes) would indicate the 3rd minute of the hour and every 15
minutes thereafter. The form "*\/..." is equivalent to the form "first-last/...",
that is, an increment over the largest possible range of the field. The form
"N/..." is accepted as meaning "N-MAX/...", that is, starting at N, use the
increment until the end of that specific range. It does not wrap around.
Comma ( , )
Commas are used to separate items of a list. For example, using "MON,WED,FRI" in
the 5th field (day of week) would mean Mondays, Wednesdays and Fridays.
Hyphen ( - )
Hyphens are used to define ranges. For example, 9-17 would indicate every
hour between 9am and 5pm inclusive.
Question mark ( ? )
Question mark may be used instead of '*' for leaving either day-of-month or
day-of-week blank.
Predefined schedules
You may use one of several pre-defined schedules in place of a cron expression.
Entry | Description | Equivalent To
----- | ----------- | -------------
@yearly (or @annually) | Run once a year, midnight, Jan. 1st | 0 0 0 1 1 *
@monthly | Run once a month, midnight, first of month | 0 0 0 1 * *
@weekly | Run once a week, midnight between Sat/Sun | 0 0 0 * * 0
@daily (or @midnight) | Run once a day, midnight | 0 0 0 * * *
@hourly | Run once an hour, beginning of hour | 0 0 * * * *
Intervals
You may also schedule a job to execute at fixed intervals, starting at the time it's added
or cron is run. This is supported by formatting the cron spec like this:
@every <duration>
where "duration" is a string accepted by time.ParseDuration
(http://golang.org/pkg/time/#ParseDuration).
For example, "@every 1h30m10s" would indicate a schedule that activates after
1 hour, 30 minutes, 10 seconds, and then every interval after that.
Note: The interval does not take the job runtime into account. For example,
if a job takes 3 minutes to run, and it is scheduled to run every 5 minutes,
it will have only 2 minutes of idle time between each run.
Time zones
All interpretation and scheduling is done in the machine's local time zone (as
provided by the Go time package (http://www.golang.org/pkg/time).
Be aware that jobs scheduled during daylight-savings leap-ahead transitions will
not be run!
Thread safety
Since the Cron service runs concurrently with the calling code, some amount of
care must be taken to ensure proper synchronization.
All cron methods are designed to be correctly synchronized as long as the caller
ensures that invocations have a clear happens-before ordering between them.
Implementation
Cron entries are stored in an array, sorted by their next activation time. Cron
sleeps until the next job is due to be run.
Upon waking:
- it runs each entry that is active on that second
- it calculates the next run times for the jobs that were run
- it re-sorts the array of entries by next activation time.
- it goes to sleep until the soonest job.
*/
package cron

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package cron
import (
"fmt"
"math"
"strconv"
"strings"
"time"
)
// Configuration options for creating a parser. Most options specify which
// fields should be included, while others enable features. If a field is not
// included the parser will assume a default value. These options do not change
// the order fields are parse in.
type ParseOption int
const (
Second ParseOption = 1 << iota // Seconds field, default 0
Minute // Minutes field, default 0
Hour // Hours field, default 0
Dom // Day of month field, default *
Month // Month field, default *
Dow // Day of week field, default *
DowOptional // Optional day of week field, default *
Descriptor // Allow descriptors such as @monthly, @weekly, etc.
)
var places = []ParseOption{
Second,
Minute,
Hour,
Dom,
Month,
Dow,
}
var defaults = []string{
"0",
"0",
"0",
"*",
"*",
"*",
}
// A custom Parser that can be configured.
type Parser struct {
options ParseOption
optionals int
}
// Creates a custom Parser with custom options.
//
// // Standard parser without descriptors
// specParser := NewParser(Minute | Hour | Dom | Month | Dow)
// sched, err := specParser.Parse("0 0 15 */3 *")
//
// // Same as above, just excludes time fields
// subsParser := NewParser(Dom | Month | Dow)
// sched, err := specParser.Parse("15 */3 *")
//
// // Same as above, just makes Dow optional
// subsParser := NewParser(Dom | Month | DowOptional)
// sched, err := specParser.Parse("15 */3")
//
func NewParser(options ParseOption) Parser {
optionals := 0
if options&DowOptional > 0 {
options |= Dow
optionals++
}
return Parser{options, optionals}
}
// Parse returns a new crontab schedule representing the given spec.
// It returns a descriptive error if the spec is not valid.
// It accepts crontab specs and features configured by NewParser.
func (p Parser) Parse(spec string) (Schedule, error) {
if len(spec) == 0 {
return nil, fmt.Errorf("Empty spec string")
}
if spec[0] == '@' && p.options&Descriptor > 0 {
return parseDescriptor(spec)
}
// Figure out how many fields we need
max := 0
for _, place := range places {
if p.options&place > 0 {
max++
}
}
min := max - p.optionals
// Split fields on whitespace
fields := strings.Fields(spec)
// Validate number of fields
if count := len(fields); count < min || count > max {
if min == max {
return nil, fmt.Errorf("Expected exactly %d fields, found %d: %s", min, count, spec)
}
return nil, fmt.Errorf("Expected %d to %d fields, found %d: %s", min, max, count, spec)
}
// Fill in missing fields
fields = expandFields(fields, p.options)
var err error
field := func(field string, r bounds) uint64 {
if err != nil {
return 0
}
var bits uint64
bits, err = getField(field, r)
return bits
}
var (
second = field(fields[0], seconds)
minute = field(fields[1], minutes)
hour = field(fields[2], hours)
dayofmonth = field(fields[3], dom)
month = field(fields[4], months)
dayofweek = field(fields[5], dow)
)
if err != nil {
return nil, err
}
return &SpecSchedule{
Second: second,
Minute: minute,
Hour: hour,
Dom: dayofmonth,
Month: month,
Dow: dayofweek,
}, nil
}
func expandFields(fields []string, options ParseOption) []string {
n := 0
count := len(fields)
expFields := make([]string, len(places))
copy(expFields, defaults)
for i, place := range places {
if options&place > 0 {
expFields[i] = fields[n]
n++
}
if n == count {
break
}
}
return expFields
}
var standardParser = NewParser(
Minute | Hour | Dom | Month | Dow | Descriptor,
)
// ParseStandard returns a new crontab schedule representing the given standardSpec
// (https://en.wikipedia.org/wiki/Cron). It differs from Parse requiring to always
// pass 5 entries representing: minute, hour, day of month, month and day of week,
// in that order. It returns a descriptive error if the spec is not valid.
//
// It accepts
// - Standard crontab specs, e.g. "* * * * ?"
// - Descriptors, e.g. "@midnight", "@every 1h30m"
func ParseStandard(standardSpec string) (Schedule, error) {
return standardParser.Parse(standardSpec)
}
var defaultParser = NewParser(
Second | Minute | Hour | Dom | Month | DowOptional | Descriptor,
)
// Parse returns a new crontab schedule representing the given spec.
// It returns a descriptive error if the spec is not valid.
//
// It accepts
// - Full crontab specs, e.g. "* * * * * ?"
// - Descriptors, e.g. "@midnight", "@every 1h30m"
func Parse(spec string) (Schedule, error) {
return defaultParser.Parse(spec)
}
// getField returns an Int with the bits set representing all of the times that
// the field represents or error parsing field value. A "field" is a comma-separated
// list of "ranges".
func getField(field string, r bounds) (uint64, error) {
var bits uint64
ranges := strings.FieldsFunc(field, func(r rune) bool { return r == ',' })
for _, expr := range ranges {
bit, err := getRange(expr, r)
if err != nil {
return bits, err
}
bits |= bit
}
return bits, nil
}
// getRange returns the bits indicated by the given expression:
// number | number "-" number [ "/" number ]
// or error parsing range.
func getRange(expr string, r bounds) (uint64, error) {
var (
start, end, step uint
rangeAndStep = strings.Split(expr, "/")
lowAndHigh = strings.Split(rangeAndStep[0], "-")
singleDigit = len(lowAndHigh) == 1
err error
)
var extra uint64
if lowAndHigh[0] == "*" || lowAndHigh[0] == "?" {
start = r.min
end = r.max
extra = starBit
} else {
start, err = parseIntOrName(lowAndHigh[0], r.names)
if err != nil {
return 0, err
}
switch len(lowAndHigh) {
case 1:
end = start
case 2:
end, err = parseIntOrName(lowAndHigh[1], r.names)
if err != nil {
return 0, err
}
default:
return 0, fmt.Errorf("Too many hyphens: %s", expr)
}
}
switch len(rangeAndStep) {
case 1:
step = 1
case 2:
step, err = mustParseInt(rangeAndStep[1])
if err != nil {
return 0, err
}
// Special handling: "N/step" means "N-max/step".
if singleDigit {
end = r.max
}
default:
return 0, fmt.Errorf("Too many slashes: %s", expr)
}
if start < r.min {
return 0, fmt.Errorf("Beginning of range (%d) below minimum (%d): %s", start, r.min, expr)
}
if end > r.max {
return 0, fmt.Errorf("End of range (%d) above maximum (%d): %s", end, r.max, expr)
}
if start > end {
return 0, fmt.Errorf("Beginning of range (%d) beyond end of range (%d): %s", start, end, expr)
}
if step == 0 {
return 0, fmt.Errorf("Step of range should be a positive number: %s", expr)
}
return getBits(start, end, step) | extra, nil
}
// parseIntOrName returns the (possibly-named) integer contained in expr.
func parseIntOrName(expr string, names map[string]uint) (uint, error) {
if names != nil {
if namedInt, ok := names[strings.ToLower(expr)]; ok {
return namedInt, nil
}
}
return mustParseInt(expr)
}
// mustParseInt parses the given expression as an int or returns an error.
func mustParseInt(expr string) (uint, error) {
num, err := strconv.Atoi(expr)
if err != nil {
return 0, fmt.Errorf("Failed to parse int from %s: %s", expr, err)
}
if num < 0 {
return 0, fmt.Errorf("Negative number (%d) not allowed: %s", num, expr)
}
return uint(num), nil
}
// getBits sets all bits in the range [min, max], modulo the given step size.
func getBits(min, max, step uint) uint64 {
var bits uint64
// If step is 1, use shifts.
if step == 1 {
return ^(math.MaxUint64 << (max + 1)) & (math.MaxUint64 << min)
}
// Else, use a simple loop.
for i := min; i <= max; i += step {
bits |= 1 << i
}
return bits
}
// all returns all bits within the given bounds. (plus the star bit)
func all(r bounds) uint64 {
return getBits(r.min, r.max, 1) | starBit
}
// parseDescriptor returns a predefined schedule for the expression, or error if none matches.
func parseDescriptor(descriptor string) (Schedule, error) {
switch descriptor {
case "@yearly", "@annually":
return &SpecSchedule{
Second: 1 << seconds.min,
Minute: 1 << minutes.min,
Hour: 1 << hours.min,
Dom: 1 << dom.min,
Month: 1 << months.min,
Dow: all(dow),
}, nil
case "@monthly":
return &SpecSchedule{
Second: 1 << seconds.min,
Minute: 1 << minutes.min,
Hour: 1 << hours.min,
Dom: 1 << dom.min,
Month: all(months),
Dow: all(dow),
}, nil
case "@weekly":
return &SpecSchedule{
Second: 1 << seconds.min,
Minute: 1 << minutes.min,
Hour: 1 << hours.min,
Dom: all(dom),
Month: all(months),
Dow: 1 << dow.min,
}, nil
case "@daily", "@midnight":
return &SpecSchedule{
Second: 1 << seconds.min,
Minute: 1 << minutes.min,
Hour: 1 << hours.min,
Dom: all(dom),
Month: all(months),
Dow: all(dow),
}, nil
case "@hourly":
return &SpecSchedule{
Second: 1 << seconds.min,
Minute: 1 << minutes.min,
Hour: all(hours),
Dom: all(dom),
Month: all(months),
Dow: all(dow),
}, nil
}
const every = "@every "
if strings.HasPrefix(descriptor, every) {
duration, err := time.ParseDuration(descriptor[len(every):])
if err != nil {
return nil, fmt.Errorf("Failed to parse duration %s: %s", descriptor, err)
}
return Every(duration), nil
}
return nil, fmt.Errorf("Unrecognized descriptor: %s", descriptor)
}

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package cron
import (
"reflect"
"strings"
"testing"
"time"
)
func TestRange(t *testing.T) {
zero := uint64(0)
ranges := []struct {
expr string
min, max uint
expected uint64
err string
}{
{"5", 0, 7, 1 << 5, ""},
{"0", 0, 7, 1 << 0, ""},
{"7", 0, 7, 1 << 7, ""},
{"5-5", 0, 7, 1 << 5, ""},
{"5-6", 0, 7, 1<<5 | 1<<6, ""},
{"5-7", 0, 7, 1<<5 | 1<<6 | 1<<7, ""},
{"5-6/2", 0, 7, 1 << 5, ""},
{"5-7/2", 0, 7, 1<<5 | 1<<7, ""},
{"5-7/1", 0, 7, 1<<5 | 1<<6 | 1<<7, ""},
{"*", 1, 3, 1<<1 | 1<<2 | 1<<3 | starBit, ""},
{"*/2", 1, 3, 1<<1 | 1<<3 | starBit, ""},
{"5--5", 0, 0, zero, "Too many hyphens"},
{"jan-x", 0, 0, zero, "Failed to parse int from"},
{"2-x", 1, 5, zero, "Failed to parse int from"},
{"*/-12", 0, 0, zero, "Negative number"},
{"*//2", 0, 0, zero, "Too many slashes"},
{"1", 3, 5, zero, "below minimum"},
{"6", 3, 5, zero, "above maximum"},
{"5-3", 3, 5, zero, "beyond end of range"},
{"*/0", 0, 0, zero, "should be a positive number"},
}
for _, c := range ranges {
actual, err := getRange(c.expr, bounds{c.min, c.max, nil})
if len(c.err) != 0 && (err == nil || !strings.Contains(err.Error(), c.err)) {
t.Errorf("%s => expected %v, got %v", c.expr, c.err, err)
}
if len(c.err) == 0 && err != nil {
t.Errorf("%s => unexpected error %v", c.expr, err)
}
if actual != c.expected {
t.Errorf("%s => expected %d, got %d", c.expr, c.expected, actual)
}
}
}
func TestField(t *testing.T) {
fields := []struct {
expr string
min, max uint
expected uint64
}{
{"5", 1, 7, 1 << 5},
{"5,6", 1, 7, 1<<5 | 1<<6},
{"5,6,7", 1, 7, 1<<5 | 1<<6 | 1<<7},
{"1,5-7/2,3", 1, 7, 1<<1 | 1<<5 | 1<<7 | 1<<3},
}
for _, c := range fields {
actual, _ := getField(c.expr, bounds{c.min, c.max, nil})
if actual != c.expected {
t.Errorf("%s => expected %d, got %d", c.expr, c.expected, actual)
}
}
}
func TestAll(t *testing.T) {
allBits := []struct {
r bounds
expected uint64
}{
{minutes, 0xfffffffffffffff}, // 0-59: 60 ones
{hours, 0xffffff}, // 0-23: 24 ones
{dom, 0xfffffffe}, // 1-31: 31 ones, 1 zero
{months, 0x1ffe}, // 1-12: 12 ones, 1 zero
{dow, 0x7f}, // 0-6: 7 ones
}
for _, c := range allBits {
actual := all(c.r) // all() adds the starBit, so compensate for that..
if c.expected|starBit != actual {
t.Errorf("%d-%d/%d => expected %b, got %b",
c.r.min, c.r.max, 1, c.expected|starBit, actual)
}
}
}
func TestBits(t *testing.T) {
bits := []struct {
min, max, step uint
expected uint64
}{
{0, 0, 1, 0x1},
{1, 1, 1, 0x2},
{1, 5, 2, 0x2a}, // 101010
{1, 4, 2, 0xa}, // 1010
}
for _, c := range bits {
actual := getBits(c.min, c.max, c.step)
if c.expected != actual {
t.Errorf("%d-%d/%d => expected %b, got %b",
c.min, c.max, c.step, c.expected, actual)
}
}
}
func TestParse(t *testing.T) {
entries := []struct {
expr string
expected Schedule
err string
}{
{
expr: "* 5 * * * *",
expected: &SpecSchedule{
Second: all(seconds),
Minute: 1 << 5,
Hour: all(hours),
Dom: all(dom),
Month: all(months),
Dow: all(dow),
},
},
{
expr: "* 5 j * * *",
err: "Failed to parse int from",
},
{
expr: "@every 5m",
expected: ConstantDelaySchedule{Delay: time.Duration(5) * time.Minute},
},
{
expr: "@every Xm",
err: "Failed to parse duration",
},
{
expr: "@yearly",
expected: &SpecSchedule{
Second: 1 << seconds.min,
Minute: 1 << minutes.min,
Hour: 1 << hours.min,
Dom: 1 << dom.min,
Month: 1 << months.min,
Dow: all(dow),
},
},
{
expr: "@annually",
expected: &SpecSchedule{
Second: 1 << seconds.min,
Minute: 1 << minutes.min,
Hour: 1 << hours.min,
Dom: 1 << dom.min,
Month: 1 << months.min,
Dow: all(dow),
},
},
{
expr: "@unrecognized",
err: "Unrecognized descriptor",
},
{
expr: "* * * *",
err: "Expected 5 to 6 fields",
},
{
expr: "",
err: "Empty spec string",
},
}
for _, c := range entries {
actual, err := Parse(c.expr)
if len(c.err) != 0 && (err == nil || !strings.Contains(err.Error(), c.err)) {
t.Errorf("%s => expected %v, got %v", c.expr, c.err, err)
}
if len(c.err) == 0 && err != nil {
t.Errorf("%s => unexpected error %v", c.expr, err)
}
if !reflect.DeepEqual(actual, c.expected) {
t.Errorf("%s => expected %b, got %b", c.expr, c.expected, actual)
}
}
}
func TestStandardSpecSchedule(t *testing.T) {
entries := []struct {
expr string
expected Schedule
err string
}{
{
expr: "5 * * * *",
expected: &SpecSchedule{1 << seconds.min, 1 << 5, all(hours), all(dom), all(months), all(dow)},
},
{
expr: "@every 5m",
expected: ConstantDelaySchedule{time.Duration(5) * time.Minute},
},
{
expr: "5 j * * *",
err: "Failed to parse int from",
},
{
expr: "* * * *",
err: "Expected exactly 5 fields",
},
}
for _, c := range entries {
actual, err := ParseStandard(c.expr)
if len(c.err) != 0 && (err == nil || !strings.Contains(err.Error(), c.err)) {
t.Errorf("%s => expected %v, got %v", c.expr, c.err, err)
}
if len(c.err) == 0 && err != nil {
t.Errorf("%s => unexpected error %v", c.expr, err)
}
if !reflect.DeepEqual(actual, c.expected) {
t.Errorf("%s => expected %b, got %b", c.expr, c.expected, actual)
}
}
}

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package cron
import "time"
// SpecSchedule specifies a duty cycle (to the second granularity), based on a
// traditional crontab specification. It is computed initially and stored as bit sets.
type SpecSchedule struct {
Second, Minute, Hour, Dom, Month, Dow uint64
}
// bounds provides a range of acceptable values (plus a map of name to value).
type bounds struct {
min, max uint
names map[string]uint
}
// The bounds for each field.
var (
seconds = bounds{0, 59, nil}
minutes = bounds{0, 59, nil}
hours = bounds{0, 23, nil}
dom = bounds{1, 31, nil}
months = bounds{1, 12, map[string]uint{
"jan": 1,
"feb": 2,
"mar": 3,
"apr": 4,
"may": 5,
"jun": 6,
"jul": 7,
"aug": 8,
"sep": 9,
"oct": 10,
"nov": 11,
"dec": 12,
}}
dow = bounds{0, 6, map[string]uint{
"sun": 0,
"mon": 1,
"tue": 2,
"wed": 3,
"thu": 4,
"fri": 5,
"sat": 6,
}}
)
const (
// Set the top bit if a star was included in the expression.
starBit = 1 << 63
)
// Next returns the next time this schedule is activated, greater than the given
// time. If no time can be found to satisfy the schedule, return the zero time.
func (s *SpecSchedule) Next(t time.Time) time.Time {
// General approach:
// For Month, Day, Hour, Minute, Second:
// Check if the time value matches. If yes, continue to the next field.
// If the field doesn't match the schedule, then increment the field until it matches.
// While incrementing the field, a wrap-around brings it back to the beginning
// of the field list (since it is necessary to re-verify previous field
// values)
// Start at the earliest possible time (the upcoming second).
t = t.Add(1*time.Second - time.Duration(t.Nanosecond())*time.Nanosecond)
// This flag indicates whether a field has been incremented.
added := false
// If no time is found within five years, return zero.
yearLimit := t.Year() + 5
WRAP:
if t.Year() > yearLimit {
return time.Time{}
}
// Find the first applicable month.
// If it's this month, then do nothing.
for 1<<uint(t.Month())&s.Month == 0 {
// If we have to add a month, reset the other parts to 0.
if !added {
added = true
// Otherwise, set the date at the beginning (since the current time is irrelevant).
t = time.Date(t.Year(), t.Month(), 1, 0, 0, 0, 0, t.Location())
}
t = t.AddDate(0, 1, 0)
// Wrapped around.
if t.Month() == time.January {
goto WRAP
}
}
// Now get a day in that month.
for !dayMatches(s, t) {
if !added {
added = true
t = time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, t.Location())
}
t = t.AddDate(0, 0, 1)
if t.Day() == 1 {
goto WRAP
}
}
for 1<<uint(t.Hour())&s.Hour == 0 {
if !added {
added = true
t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), 0, 0, 0, t.Location())
}
t = t.Add(1 * time.Hour)
if t.Hour() == 0 {
goto WRAP
}
}
for 1<<uint(t.Minute())&s.Minute == 0 {
if !added {
added = true
t = t.Truncate(time.Minute)
}
t = t.Add(1 * time.Minute)
if t.Minute() == 0 {
goto WRAP
}
}
for 1<<uint(t.Second())&s.Second == 0 {
if !added {
added = true
t = t.Truncate(time.Second)
}
t = t.Add(1 * time.Second)
if t.Second() == 0 {
goto WRAP
}
}
return t
}
// dayMatches returns true if the schedule's day-of-week and day-of-month
// restrictions are satisfied by the given time.
func dayMatches(s *SpecSchedule, t time.Time) bool {
var (
domMatch bool = 1<<uint(t.Day())&s.Dom > 0
dowMatch bool = 1<<uint(t.Weekday())&s.Dow > 0
)
if s.Dom&starBit > 0 || s.Dow&starBit > 0 {
return domMatch && dowMatch
}
return domMatch || dowMatch
}

249
third/github.com/robfig/cron/spec_test.go Normal file
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@ -0,0 +1,249 @@
package cron
import (
"testing"
"time"
)
func TestActivation(t *testing.T) {
tests := []struct {
time, spec string
expected bool
}{
// Every fifteen minutes.
{"Mon Jul 9 15:00 2012", "0 0/15 * * *", true},
{"Mon Jul 9 15:45 2012", "0 0/15 * * *", true},
{"Mon Jul 9 15:40 2012", "0 0/15 * * *", false},
// Every fifteen minutes, starting at 5 minutes.
{"Mon Jul 9 15:05 2012", "0 5/15 * * *", true},
{"Mon Jul 9 15:20 2012", "0 5/15 * * *", true},
{"Mon Jul 9 15:50 2012", "0 5/15 * * *", true},
// Named months
{"Sun Jul 15 15:00 2012", "0 0/15 * * Jul", true},
{"Sun Jul 15 15:00 2012", "0 0/15 * * Jun", false},
// Everything set.
{"Sun Jul 15 08:30 2012", "0 30 08 ? Jul Sun", true},
{"Sun Jul 15 08:30 2012", "0 30 08 15 Jul ?", true},
{"Mon Jul 16 08:30 2012", "0 30 08 ? Jul Sun", false},
{"Mon Jul 16 08:30 2012", "0 30 08 15 Jul ?", false},
// Predefined schedules
{"Mon Jul 9 15:00 2012", "@hourly", true},
{"Mon Jul 9 15:04 2012", "@hourly", false},
{"Mon Jul 9 15:00 2012", "@daily", false},
{"Mon Jul 9 00:00 2012", "@daily", true},
{"Mon Jul 9 00:00 2012", "@weekly", false},
{"Sun Jul 8 00:00 2012", "@weekly", true},
{"Sun Jul 8 01:00 2012", "@weekly", false},
{"Sun Jul 8 00:00 2012", "@monthly", false},
{"Sun Jul 1 00:00 2012", "@monthly", true},
// Test interaction of DOW and DOM.
// If both are specified, then only one needs to match.
{"Sun Jul 15 00:00 2012", "0 * * 1,15 * Sun", true},
{"Fri Jun 15 00:00 2012", "0 * * 1,15 * Sun", true},
{"Wed Aug 1 00:00 2012", "0 * * 1,15 * Sun", true},
// However, if one has a star, then both need to match.
{"Sun Jul 15 00:00 2012", "0 * * * * Mon", false},
{"Sun Jul 15 00:00 2012", "0 * * */10 * Sun", false},
{"Mon Jul 9 00:00 2012", "0 * * 1,15 * *", false},
{"Sun Jul 15 00:00 2012", "0 * * 1,15 * *", true},
{"Sun Jul 15 00:00 2012", "0 * * */2 * Sun", true},
}
for _, test := range tests {
sched, err := Parse(test.spec)
if err != nil {
t.Error(err)
continue
}
actual := sched.Next(getTime(test.time).Add(-1 * time.Second))
expected := getTime(test.time)
if test.expected && expected != actual || !test.expected && expected == actual {
t.Errorf("Fail evaluating %s on %s: (expected) %s != %s (actual)",
test.spec, test.time, expected, actual)
}
}
}
func TestNext(t *testing.T) {
runs := []struct {
time, spec string
expected string
}{
// Simple cases
{"Mon Jul 9 14:45 2012", "0 0/15 * * *", "Mon Jul 9 15:00 2012"},
{"Mon Jul 9 14:59 2012", "0 0/15 * * *", "Mon Jul 9 15:00 2012"},
{"Mon Jul 9 14:59:59 2012", "0 0/15 * * *", "Mon Jul 9 15:00 2012"},
// Wrap around hours
{"Mon Jul 9 15:45 2012", "0 20-35/15 * * *", "Mon Jul 9 16:20 2012"},
// Wrap around days
{"Mon Jul 9 23:46 2012", "0 */15 * * *", "Tue Jul 10 00:00 2012"},
{"Mon Jul 9 23:45 2012", "0 20-35/15 * * *", "Tue Jul 10 00:20 2012"},
{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 * * *", "Tue Jul 10 00:20:15 2012"},
{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 1/2 * *", "Tue Jul 10 01:20:15 2012"},
{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 10-12 * *", "Tue Jul 10 10:20:15 2012"},
{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 1/2 */2 * *", "Thu Jul 11 01:20:15 2012"},
{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 * 9-20 * *", "Wed Jul 10 00:20:15 2012"},
{"Mon Jul 9 23:35:51 2012", "15/35 20-35/15 * 9-20 Jul *", "Wed Jul 10 00:20:15 2012"},
// Wrap around months
{"Mon Jul 9 23:35 2012", "0 0 0 9 Apr-Oct ?", "Thu Aug 9 00:00 2012"},
{"Mon Jul 9 23:35 2012", "0 0 0 */5 Apr,Aug,Oct Mon", "Mon Aug 6 00:00 2012"},
{"Mon Jul 9 23:35 2012", "0 0 0 */5 Oct Mon", "Mon Oct 1 00:00 2012"},
// Wrap around years
{"Mon Jul 9 23:35 2012", "0 0 0 * Feb Mon", "Mon Feb 4 00:00 2013"},
{"Mon Jul 9 23:35 2012", "0 0 0 * Feb Mon/2", "Fri Feb 1 00:00 2013"},
// Wrap around minute, hour, day, month, and year
{"Mon Dec 31 23:59:45 2012", "0 * * * * *", "Tue Jan 1 00:00:00 2013"},
// Leap year
{"Mon Jul 9 23:35 2012", "0 0 0 29 Feb ?", "Mon Feb 29 00:00 2016"},
// Daylight savings time 2am EST (-5) -> 3am EDT (-4)
{"2012-03-11T00:00:00-0500", "0 30 2 11 Mar ?", "2013-03-11T02:30:00-0400"},
// hourly job
{"2012-03-11T00:00:00-0500", "0 0 * * * ?", "2012-03-11T01:00:00-0500"},
{"2012-03-11T01:00:00-0500", "0 0 * * * ?", "2012-03-11T03:00:00-0400"},
{"2012-03-11T03:00:00-0400", "0 0 * * * ?", "2012-03-11T04:00:00-0400"},
{"2012-03-11T04:00:00-0400", "0 0 * * * ?", "2012-03-11T05:00:00-0400"},
// 1am nightly job
{"2012-03-11T00:00:00-0500", "0 0 1 * * ?", "2012-03-11T01:00:00-0500"},
{"2012-03-11T01:00:00-0500", "0 0 1 * * ?", "2012-03-12T01:00:00-0400"},
// 2am nightly job (skipped)
{"2012-03-11T00:00:00-0500", "0 0 2 * * ?", "2012-03-12T02:00:00-0400"},
// Daylight savings time 2am EDT (-4) => 1am EST (-5)
{"2012-11-04T00:00:00-0400", "0 30 2 04 Nov ?", "2012-11-04T02:30:00-0500"},
{"2012-11-04T01:45:00-0400", "0 30 1 04 Nov ?", "2012-11-04T01:30:00-0500"},
// hourly job
{"2012-11-04T00:00:00-0400", "0 0 * * * ?", "2012-11-04T01:00:00-0400"},
{"2012-11-04T01:00:00-0400", "0 0 * * * ?", "2012-11-04T01:00:00-0500"},
{"2012-11-04T01:00:00-0500", "0 0 * * * ?", "2012-11-04T02:00:00-0500"},
// 1am nightly job (runs twice)
{"2012-11-04T00:00:00-0400", "0 0 1 * * ?", "2012-11-04T01:00:00-0400"},
{"2012-11-04T01:00:00-0400", "0 0 1 * * ?", "2012-11-04T01:00:00-0500"},
{"2012-11-04T01:00:00-0500", "0 0 1 * * ?", "2012-11-05T01:00:00-0500"},
// 2am nightly job
{"2012-11-04T00:00:00-0400", "0 0 2 * * ?", "2012-11-04T02:00:00-0500"},
{"2012-11-04T02:00:00-0500", "0 0 2 * * ?", "2012-11-05T02:00:00-0500"},
// 3am nightly job
{"2012-11-04T00:00:00-0400", "0 0 3 * * ?", "2012-11-04T03:00:00-0500"},
{"2012-11-04T03:00:00-0500", "0 0 3 * * ?", "2012-11-05T03:00:00-0500"},
// Unsatisfiable
{"Mon Jul 9 23:35 2012", "0 0 0 30 Feb ?", ""},
{"Mon Jul 9 23:35 2012", "0 0 0 31 Apr ?", ""},
}
for _, c := range runs {
sched, err := Parse(c.spec)
if err != nil {
t.Error(err)
continue
}
actual := sched.Next(getTime(c.time))
expected := getTime(c.expected)
if !actual.Equal(expected) {
t.Errorf("%s, \"%s\": (expected) %v != %v (actual)", c.time, c.spec, expected, actual)
}
}
}
func TestErrors(t *testing.T) {
invalidSpecs := []string{
"xyz",
"60 0 * * *",
"0 60 * * *",
"0 0 * * XYZ",
}
for _, spec := range invalidSpecs {
_, err := Parse(spec)
if err == nil {
t.Error("expected an error parsing: ", spec)
}
}
}
func getTime(value string) time.Time {
if value == "" {
return time.Time{}
}
t, err := time.Parse("Mon Jan 2 15:04 2006", value)
if err != nil {
t, err = time.Parse("Mon Jan 2 15:04:05 2006", value)
if err != nil {
t, err = time.Parse("2006-01-02T15:04:05-0700", value)
if err != nil {
panic(err)
}
// Daylight savings time tests require location
if ny, err := time.LoadLocation("America/New_York"); err == nil {
t = t.In(ny)
}
}
}
return t
}
func TestNextWithTz(t *testing.T) {
runs := []struct {
time, spec string
expected string
}{
// Failing tests
{"2016-01-03T13:09:03+0530", "0 14 14 * * *", "2016-01-03T14:14:00+0530"},
{"2016-01-03T04:09:03+0530", "0 14 14 * * ?", "2016-01-03T14:14:00+0530"},
// Passing tests
{"2016-01-03T14:09:03+0530", "0 14 14 * * *", "2016-01-03T14:14:00+0530"},
{"2016-01-03T14:00:00+0530", "0 14 14 * * ?", "2016-01-03T14:14:00+0530"},
}
for _, c := range runs {
sched, err := Parse(c.spec)
if err != nil {
t.Error(err)
continue
}
actual := sched.Next(getTimeTZ(c.time))
expected := getTimeTZ(c.expected)
if !actual.Equal(expected) {
t.Errorf("%s, \"%s\": (expected) %v != %v (actual)", c.time, c.spec, expected, actual)
}
}
}
func getTimeTZ(value string) time.Time {
if value == "" {
return time.Time{}
}
t, err := time.Parse("Mon Jan 2 15:04 2006", value)
if err != nil {
t, err = time.Parse("Mon Jan 2 15:04:05 2006", value)
if err != nil {
t, err = time.Parse("2006-01-02T15:04:05-0700", value)
if err != nil {
panic(err)
}
}
}
return t
}