init - add project files
This commit is contained in:
180
vendor/github.com/go-co-op/gocron/v2/README.md
generated
vendored
Normal file
180
vendor/github.com/go-co-op/gocron/v2/README.md
generated
vendored
Normal file
@@ -0,0 +1,180 @@
|
||||
# gocron: A Golang Job Scheduling Package
|
||||
|
||||
[](https://github.com/go-co-op/gocron/actions)
|
||||
 [](https://pkg.go.dev/github.com/go-co-op/gocron/v2)
|
||||
|
||||
gocron is a job scheduling package which lets you run Go functions at pre-determined intervals.
|
||||
|
||||
If you want to chat, you can find us on Slack at
|
||||
[<img src="https://img.shields.io/badge/gophers-gocron-brightgreen?logo=slack">](https://gophers.slack.com/archives/CQ7T0T1FW)
|
||||
|
||||
## Quick Start
|
||||
|
||||
```
|
||||
go get github.com/go-co-op/gocron/v2
|
||||
```
|
||||
|
||||
```golang
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"github.com/go-co-op/gocron/v2"
|
||||
)
|
||||
|
||||
func main() {
|
||||
// create a scheduler
|
||||
s, err := gocron.NewScheduler()
|
||||
if err != nil {
|
||||
// handle error
|
||||
}
|
||||
|
||||
// add a job to the scheduler
|
||||
j, err := s.NewJob(
|
||||
gocron.DurationJob(
|
||||
10*time.Second,
|
||||
),
|
||||
gocron.NewTask(
|
||||
func(a string, b int) {
|
||||
// do things
|
||||
},
|
||||
"hello",
|
||||
1,
|
||||
),
|
||||
)
|
||||
if err != nil {
|
||||
// handle error
|
||||
}
|
||||
// each job has a unique id
|
||||
fmt.Println(j.ID())
|
||||
|
||||
// start the scheduler
|
||||
s.Start()
|
||||
|
||||
// block until you are ready to shut down
|
||||
select {
|
||||
case <-time.After(time.Minute):
|
||||
}
|
||||
|
||||
// when you're done, shut it down
|
||||
err = s.Shutdown()
|
||||
if err != nil {
|
||||
// handle error
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Examples
|
||||
|
||||
- [Go doc examples](https://pkg.go.dev/github.com/go-co-op/gocron/v2#pkg-examples)
|
||||
- [Examples directory](examples)
|
||||
|
||||
## Concepts
|
||||
|
||||
- **Job**: The job encapsulates a "task", which is made up of a go function and any function parameters. The Job then
|
||||
provides the scheduler with the time the job should next be scheduled to run.
|
||||
- **Scheduler**: The scheduler keeps track of all the jobs and sends each job to the executor when
|
||||
it is ready to be run.
|
||||
- **Executor**: The executor calls the job's task and manages the complexities of different job
|
||||
execution timing requirements (e.g. singletons that shouldn't overrun each other, limiting the max number of jobs running)
|
||||
|
||||
|
||||
## Features
|
||||
|
||||
### Job types
|
||||
Jobs can be run at various intervals.
|
||||
- [**Duration**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#DurationJob):
|
||||
Jobs can be run at a fixed `time.Duration`.
|
||||
- [**Random duration**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#DurationRandomJob):
|
||||
Jobs can be run at a random `time.Duration` between a min and max.
|
||||
- [**Cron**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#CronJob):
|
||||
Jobs can be run using a crontab.
|
||||
- [**Daily**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#DailyJob):
|
||||
Jobs can be run every x days at specific times.
|
||||
- [**Weekly**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WeeklyJob):
|
||||
Jobs can be run every x weeks on specific days of the week and at specific times.
|
||||
- [**Monthly**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#MonthlyJob):
|
||||
Jobs can be run every x months on specific days of the month and at specific times.
|
||||
- [**One time**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#OneTimeJob):
|
||||
Jobs can be run at specific time(s) (either once or many times).
|
||||
|
||||
### Concurrency Limits
|
||||
Jobs can be limited individually or across the entire scheduler.
|
||||
- [**Per job limiting with singleton mode**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WithSingletonMode):
|
||||
Jobs can be limited to a single concurrent execution that either reschedules (skips overlapping executions)
|
||||
or queues (waits for the previous execution to finish).
|
||||
- [**Per scheduler limiting with limit mode**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WithLimitConcurrentJobs):
|
||||
Jobs can be limited to a certain number of concurrent executions across the entire scheduler
|
||||
using either reschedule (skip when the limit is met) or queue (jobs are added to a queue to
|
||||
wait for the limit to be available).
|
||||
- **Note:** A scheduler limit and a job limit can both be enabled.
|
||||
|
||||
### Distributed instances of gocron
|
||||
Multiple instances of gocron can be run.
|
||||
- [**Elector**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WithDistributedElector):
|
||||
An elector can be used to elect a single instance of gocron to run as the primary with the
|
||||
other instances checking to see if a new leader needs to be elected.
|
||||
- Implementations: [go-co-op electors](https://github.com/go-co-op?q=-elector&type=all&language=&sort=)
|
||||
(don't see what you need? request on slack to get a repo created to contribute it!)
|
||||
- [**Locker**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WithDistributedLocker):
|
||||
A locker can be used to lock each run of a job to a single instance of gocron.
|
||||
Locker can be at job or scheduler, if it is defined both at job and scheduler then locker of job will take precedence.
|
||||
- Implementations: [go-co-op lockers](https://github.com/go-co-op?q=-lock&type=all&language=&sort=)
|
||||
(don't see what you need? request on slack to get a repo created to contribute it!)
|
||||
|
||||
### Events
|
||||
Job events can trigger actions.
|
||||
- [**Listeners**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WithEventListeners):
|
||||
Can be added to a job, with [event listeners](https://pkg.go.dev/github.com/go-co-op/gocron/v2#EventListener),
|
||||
or all jobs across the
|
||||
[scheduler](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WithGlobalJobOptions)
|
||||
to listen for job events and trigger actions.
|
||||
|
||||
### Options
|
||||
Many job and scheduler options are available.
|
||||
- [**Job options**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#JobOption):
|
||||
Job options can be set when creating a job using `NewJob`.
|
||||
- [**Global job options**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WithGlobalJobOptions):
|
||||
Global job options can be set when creating a scheduler using `NewScheduler`
|
||||
and the `WithGlobalJobOptions` option.
|
||||
- [**Scheduler options**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#SchedulerOption):
|
||||
Scheduler options can be set when creating a scheduler using `NewScheduler`.
|
||||
|
||||
### Logging
|
||||
Logs can be enabled.
|
||||
- [Logger](https://pkg.go.dev/github.com/go-co-op/gocron/v2#Logger):
|
||||
The Logger interface can be implemented with your desired logging library.
|
||||
The provided NewLogger uses the standard library's log package.
|
||||
|
||||
### Metrics
|
||||
Metrics may be collected from the execution of each job.
|
||||
- [**Monitor**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#Monitor):
|
||||
- [**MonitorStatus**](https://pkg.go.dev/github.com/go-co-op/gocron/v2#MonitorStatus) (includes status and error (if any) of the Job)
|
||||
A monitor can be used to collect metrics for each job from a scheduler.
|
||||
- Implementations: [go-co-op monitors](https://github.com/go-co-op?q=-monitor&type=all&language=&sort=)
|
||||
(don't see what you need? request on slack to get a repo created to contribute it!)
|
||||
|
||||
### Testing
|
||||
The gocron library is set up to enable testing.
|
||||
- Mocks are provided in [the mock package](mocks) using [gomock](https://github.com/uber-go/mock).
|
||||
- Time can be mocked by passing in a [FakeClock](https://pkg.go.dev/github.com/jonboulle/clockwork#FakeClock)
|
||||
to [WithClock](https://pkg.go.dev/github.com/go-co-op/gocron/v2#WithClock) -
|
||||
see the [example on WithClock](https://pkg.go.dev/github.com/go-co-op/gocron/v2#example-WithClock).
|
||||
|
||||
## Supporters
|
||||
|
||||
We appreciate the support for free and open source software!
|
||||
|
||||
This project is supported by:
|
||||
|
||||
[Jetbrains](https://www.jetbrains.com/?from=gocron)
|
||||

|
||||
|
||||
|
||||
[Sentry](https://sentry.io/welcome/)
|
||||
|
||||
## Star History
|
||||
|
||||
[](https://star-history.com/#go-co-op/gocron&Date)
|
||||
Reference in New Issue
Block a user