modules: Index | Files

package jobs

import ""

A job runner for executing scheduled or ad-hoc tasks asynchronously from HTTP requests.

It adds a couple of features on top of the cron package to make it play nicely with Revel:

1. Protection against job panics. (They print to ERROR instead of take down the process)

2. (Optional) Limit on the number of jobs that may run simulatenously, to limit resource consumption.

3. (Optional) Protection against multiple instances of a single job running concurrently. If one execution runs into the next, the next will be queued.

4. Cron expressions may be defined in app.conf and are reusable across jobs.

5. Job status reporting.


Package Files

init.go job.go jobrunner.go plugin.go


const DefaultJobPoolSize = 10
const UnNamed = "(unnamed)"


var (
    // Singleton instance of the underlying job scheduler.
    MainCron *cron.Cron

func Every Uses

func Every(duration time.Duration, job cron.Job)

Run the given job at a fixed interval. The interval provided is the time between the job ending and the job being run again. The time that the job takes to run is not included in the interval.

func In Uses

func In(duration time.Duration, job cron.Job)

Run the given job once, after the given delay.

func Now Uses

func Now(job cron.Job)

Run the given job right now.

func Schedule Uses

func Schedule(spec string, job cron.Job) error

type Func Uses

type Func func()

Callers can use jobs.Func to wrap a raw func. (Copying the type to this package makes it more visible)

For example:

jobs.Schedule("cron.frequent", jobs.Func(myFunc))

func (Func) Run Uses

func (r Func) Run()

type Job Uses

type Job struct {
    Name string
    // contains filtered or unexported fields

func New Uses

func New(job cron.Job) *Job

func (*Job) Run Uses

func (j *Job) Run()

func (*Job) Status Uses

func (j *Job) Status() string

Package jobs imports 8 packages (graph) and is imported by 21 packages. Updated 2018-11-03. Refresh now. Tools for package owners.