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mediaapi/writers/download: Handle panic to ensure waking of goroutines

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If the active request were to panic, we need to ensure all the waiting
goroutines get woken up.
This commit is contained in:
Robert Swain 2017-06-01 14:54:59 +02:00
parent ce21b32d38
commit cae309fa26
1 changed files with 5 additions and 0 deletions
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5
src/github.com/matrix-org/dendrite/mediaapi/writers/download.go
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@ -229,6 +229,11 @@ func (r *downloadRequest) getRemoteFile(cfg *config.MediaAPI, db *storage.Databa
// Note: broadcastMediaMetadata uses mutexes and conditions from activeRemoteRequests
defer func() {
// Note: errorResponse is the named return variable so we wrap this in a closure to re-evaluate the arguments at defer-time
if err := recover(); err != nil {
resErr := jsonerror.InternalServerError()
r.broadcastMediaMetadata(activeRemoteRequests, &resErr)
panic(err)
}
r.broadcastMediaMetadata(activeRemoteRequests, errorResponse)
}()