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Recover from panic in cron task (#28409) (#28425)

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Backport #28409 by @earl-warren

- Currently there's code to recover gracefully from panics that happen
within the execution of cron tasks. However this recover code wasn't
being run, because `RunWithShutdownContext` also contains code to
recover from any panic and then gracefully shutdown Forgejo. Because
`RunWithShutdownContext` registers that code as last, that would get run
first which in this case is not behavior that we want.
- Move the recover code to inside the function, so that is run first
before `RunWithShutdownContext`'s recover code (which is now a noop).

Fixes: https://codeberg.org/forgejo/forgejo/issues/1910

Co-authored-by: Earl Warren <109468362+earl-warren@users.noreply.github.com>
Co-authored-by: Gusted <postmaster@gusted.xyz>
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Giteabot 2023-12-12 11:28:56 +08:00 committed by GitHub
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commit 6f4d5c0b8c
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1 changed files with 7 additions and 5 deletions
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6
services/cron/tasks.go
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@ -84,13 +84,15 @@ func (t *Task) RunWithUser(doer *user_model.User, config Config) {
t.lock.Unlock() t.lock.Unlock()
defer func() { defer func() {
taskStatusTable.Stop(t.Name) taskStatusTable.Stop(t.Name)
}()
graceful.GetManager().RunWithShutdownContext(func(baseCtx context.Context) {
defer func() {
if err := recover(); err != nil { if err := recover(); err != nil {
// Recover a panic within the // Recover a panic within the execution of the task.
combinedErr := fmt.Errorf("%s\n%s", err, log.Stack(2)) combinedErr := fmt.Errorf("%s\n%s", err, log.Stack(2))
log.Error("PANIC whilst running task: %s Value: %v", t.Name, combinedErr) log.Error("PANIC whilst running task: %s Value: %v", t.Name, combinedErr)
} }
}() }()
graceful.GetManager().RunWithShutdownContext(func(baseCtx context.Context) {
// Store the time of this run, before the function is executed, so it // Store the time of this run, before the function is executed, so it
// matches the behavior of what the cron library does. // matches the behavior of what the cron library does.
t.lock.Lock() t.lock.Lock()