Delete run feature

[cassiozareck]

Target Issue: #26219

This PR has the aim of add a delete single workflow run feature to Gitea. It does that by:

1. Adding in web.go a new delete endpoint for the action that calls action.Delete.
2. In the Delete function it gets the respective ActionRun and ActionRunJob objects by run ID, starts a transaction and calls 2 lower-level functions at models/actions/run.go: DeleteRun and DeleteRunJobs.
3. These lower-level functions will be responsible to do the DB operations to delete it.

This work is still in progress and I'm aware it needs more operations to really erase every remnant of the deleted Run. Also it needs to be integrated with the frontend.

[cassiozareck]

Hey @KN4CK3R thanks for helping me. I want to ask you a few question:

1- Do we need to decrease the action_run_index? If we dont then when inserting new run actions ids will not be linear if we deleted some Run. Like so:

I also want to cover this but seems hard to decrease the NextResourceIndex

2- When inserting new runs there's a TaskVersion that is increased. I dont know exactly its purposes by now either if we need to do something with it when deleting.

Overall the functionality is working to delete run workflows as well its jobs. By now I'll also implement a way of delete stored jobs tasks that are associate with a non-existent job ID.

[KN4CK3R]

1- Do we need to decrease the action_run_index? If we dont then when inserting new run actions ids will not be linear if we deleted some Run. Like so: I also want to cover this but seems hard to decrease the NextResourceIndex

I see no reason to do this. The id should be unique. If you delete an entry there should be no way to reuse the old id.

[cassiozareck]

I've updated the PR now its also removing ActionTaskSteps. The only thing that remains is to also remove the ActionTask... I've spend some time in it but I couldn't figure out why it isn't being removed from database. It reaches until run.DeleteTask correctly with the correct ID. But the Row just stays at the DB even after the DeleteBeans has executed. There isn't any error. Everything else is deleted correctly.
I'll ping @wolfogre as he made most of the Actions logic maybe he can help me there also.

[wolfogre]

But the Row just stays at the DB even after the DeleteBeans has executed. There isn't any error. Everything else is deleted correctly.

I haven't looked at the code yet, but I think it may be an incorrect use of xorm, you could enable SQL log to debug it.

I'll ping @wolfogre as he made most of the Actions logic maybe he can help me there also.

Some logic which could help:

• What you want delete is a run, so you need to delete a row of ActionRun.
• A run could include multiple jobs, so you need to delete multiple rows of ActionRunJob.
• When a job has been picked up by a runner to execute, there will be a task, however, a job could be rerun many times, so you need to delete multiple rows of ActionTask.
• Every task could include
  • multiple steps, so ActionTaskStep
  • multiple outputs, so ActionTaskOutput
• The log of the task is stored as a file (in DBFS or storage), so you need to detele it according to ActionTask.LogFilename or ActionTask.LogInStorage.
• In addition, there may be some artifacts uploaded to the run, so you need to delete multiple rows of ActionArtifact.
  • The files of artifacts are stored in storage, so you need to remove them.
• Finally, update NumActionRuns and NumClosedActionRuns of Repository.

To be honest, I don't think it's a small job. See also #24256