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feat: migrate from github:robfig/cron
Signed-off-by: Marko Kungla <marko.kungla@gmail.com>
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[![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) | ||
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# cron | ||
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Cron V3 has been released! | ||
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To download the specific tagged release, run: | ||
```bash | ||
go get github.com/robfig/cron/v3@v3.0.0 | ||
``` | ||
Import it in your program as: | ||
```go | ||
import "github.com/robfig/cron/v3" | ||
``` | ||
It requires Go 1.11 or later due to usage of Go Modules. | ||
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Refer to the documentation here: | ||
http://godoc.org/github.com/robfig/cron | ||
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The rest of this document describes the the advances in v3 and a list of | ||
breaking changes for users that wish to upgrade from an earlier version. | ||
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## Upgrading to v3 (June 2019) | ||
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cron v3 is a major upgrade to the library that addresses all outstanding bugs, | ||
feature requests, and rough edges. It is based on a merge of master which | ||
contains various fixes to issues found over the years and the v2 branch which | ||
contains some backwards-incompatible features like the ability to remove cron | ||
jobs. In addition, v3 adds support for Go Modules, cleans up rough edges like | ||
the timezone support, and fixes a number of bugs. | ||
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New features: | ||
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- Support for Go modules. Callers must now import this library as | ||
`github.com/robfig/cron/v3`, instead of `gopkg.in/...` | ||
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- Fixed bugs: | ||
- 0f01e6b parser: fix combining of Dow and Dom (#70) | ||
- dbf3220 adjust times when rolling the clock forward to handle non-existent midnight (#157) | ||
- eeecf15 spec_test.go: ensure an error is returned on 0 increment (#144) | ||
- 70971dc cron.Entries(): update request for snapshot to include a reply channel (#97) | ||
- 1cba5e6 cron: fix: removing a job causes the next scheduled job to run too late (#206) | ||
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- Standard cron spec parsing by default (first field is "minute"), with an easy | ||
way to opt into the seconds field (quartz-compatible). Although, note that the | ||
year field (optional in Quartz) is not supported. | ||
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- Extensible, key/value logging via an interface that complies with | ||
the https://github.com/go-logr/logr project. | ||
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- The new Chain & JobWrapper types allow you to install "interceptors" to add | ||
cross-cutting behavior like the following: | ||
- Recover any panics from jobs | ||
- Delay a job's execution if the previous run hasn't completed yet | ||
- Skip a job's execution if the previous run hasn't completed yet | ||
- Log each job's invocations | ||
- Notification when jobs are completed | ||
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It is backwards incompatible with both v1 and v2. These updates are required: | ||
> customized based on github.com/robfig/cron/v3 | ||
- The v1 branch accepted an optional seconds field at the beginning of the cron | ||
spec. This is non-standard and has led to a lot of confusion. The new default | ||
parser conforms to the standard as described by [the Cron wikipedia page]. | ||
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UPDATING: To retain the old behavior, construct your Cron with a custom | ||
parser: | ||
```go | ||
// Seconds field, required | ||
cron.New(cron.WithSeconds()) | ||
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// Seconds field, optional | ||
cron.New(cron.WithParser(cron.NewParser( | ||
cron.SecondOptional | cron.Minute | cron.Hour | cron.Dom | cron.Month | cron.Dow | cron.Descriptor, | ||
))) | ||
``` | ||
- The Cron type now accepts functional options on construction rather than the | ||
previous ad-hoc behavior modification mechanisms (setting a field, calling a setter). | ||
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UPDATING: Code that sets Cron.ErrorLogger or calls Cron.SetLocation must be | ||
updated to provide those values on construction. | ||
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- CRON_TZ is now the recommended way to specify the timezone of a single | ||
schedule, which is sanctioned by the specification. The legacy "TZ=" prefix | ||
will continue to be supported since it is unambiguous and easy to do so. | ||
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UPDATING: No update is required. | ||
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- By default, cron will no longer recover panics in jobs that it runs. | ||
Recovering can be surprising (see issue #192) and seems to be at odds with | ||
typical behavior of libraries. Relatedly, the `cron.WithPanicLogger` option | ||
has been removed to accommodate the more general JobWrapper type. | ||
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UPDATING: To opt into panic recovery and configure the panic logger: | ||
```go | ||
cron.New(cron.WithChain( | ||
cron.Recover(logger), // or use cron.DefaultLogger | ||
)) | ||
``` | ||
- In adding support for https://github.com/go-logr/logr, `cron.WithVerboseLogger` was | ||
removed, since it is duplicative with the leveled logging. | ||
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UPDATING: Callers should use `WithLogger` and specify a logger that does not | ||
discard `Info` logs. For convenience, one is provided that wraps `*log.Logger`: | ||
```go | ||
cron.New( | ||
cron.WithLogger(cron.VerbosePrintfLogger(logger))) | ||
import "github.com/happy-sdk/cron" | ||
``` | ||
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### Background - Cron spec format | ||
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There are two cron spec formats in common usage: | ||
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- The "standard" cron format, described on [the Cron wikipedia page] and used by | ||
the cron Linux system utility. | ||
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- The cron format used by [the Quartz Scheduler], commonly used for scheduled | ||
jobs in Java software | ||
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[the Cron wikipedia page]: https://en.wikipedia.org/wiki/Cron | ||
[the Quartz Scheduler]: http://www.quartz-scheduler.org/documentation/quartz-2.3.0/tutorials/tutorial-lesson-06.html | ||
## Credits | ||
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The original version of this package included an optional "seconds" field, which | ||
made it incompatible with both of these formats. Now, the "standard" format is | ||
the default format accepted, and the Quartz format is opt-in. | ||
<sub>**Original author [Rob Figueiredo](https://github.com/robfig).**</sub> | ||
<sup>cron was forked from [robfig/cron](https://github.com/robfig/cron)</sup> |
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module github.com/robfig/cron/v3 | ||
module github.com/happy-sdk/cron | ||
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go 1.12 | ||
go 1.20 |