Cron triggers

[laszlocph]

Implement cron like triggers to enable nightly builds.

[6543]

drone example:

I also would add a manual "play-button" to trigger it manually next to delete icon

[mscherer]

So, what would be the syntax for the cron jobs ?

I see several choices:

• have 1 string and reuse the format from vixie cron (eg "5 0 * * *"). While this is well known and compact (and I think easy to parse), I think it tend to be error prone. For example, the example I typed is "running 5 minutes after midnight", but I would have guessed it was "running at 5 in the morning". There is a module for that, do not look maintained.
• have 1 string, and reuse systemd syntax. This is the one that linux sysadmin would known now, and I think it is better than the cron one (more flexible, more intuitive). But it is a lot more complex, it is more verbose and the question become on whether the format should "calendar event", or "duration", or both. Do we want to say "run that every X minutes/hours/duration", or "run at time that match this pattern". There is a module, also maybe unmaintained.
• do a custom format. This could mean to not limit the format to "schedule: xxxx", and have a custom DSL in yaml.

[6543]

https://pkg.go.dev/github.com/robfig/cron?utm_source=godoc#hdr-Usage

[svdHero]

This feature is crucial for us, since we also want to execute long running nightly system tests with Woodpecker.

[6543]

#934 is ready enouth ... only docu is missing

example:

• https://ci.codeberg.org/6543/ci-cron-example/build/2/3
• https://codeberg.org/6543/ci-cron-example/src/branch/main/.woodpecker.yml