git-annex/Assistant/Threads/Pusher.hs
Joey Hess 83056e7b53
convert checkAvailable to use availability rather than localpath
Every remote that sets localpath also implements an availability that
reutrns Unavailable when a local directory is not available.

This makes external remotes, and others that get support for
availability Unavailable to be used by checkAvailable. (Which is only
used by the assistant.)

Had to keep localpath though, since other parts of the assistant use it
to eg, sync with a remote when a removable drive is plugged in.

Sponsored-by: Jack Hill on Patreon
2023-08-16 15:57:30 -04:00

50 lines
1.7 KiB
Haskell

{- git-annex assistant git pushing thread
-
- Copyright 2012 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Assistant.Threads.Pusher where
import Assistant.Common
import Assistant.Commits
import Assistant.Pushes
import Assistant.DaemonStatus
import Assistant.Sync
import Utility.ThreadScheduler
import qualified Remote
import qualified Types.Remote as Remote
{- This thread retries pushes that failed before. -}
pushRetryThread :: NamedThread
pushRetryThread = namedThread "PushRetrier" $ runEvery (Seconds halfhour) <~> do
-- We already waited half an hour, now wait until there are failed
-- pushes to retry.
topush <- getFailedPushesBefore (fromIntegral halfhour)
=<< getAssistant failedPushMap
unless (null topush) $ do
debug ["retrying", show (length topush), "failed pushes"]
void $ pushToRemotes topush
where
halfhour = 1800
{- This thread pushes git commits out to remotes soon after they are made. -}
pushThread :: NamedThread
pushThread = namedThread "Pusher" $ runEvery (Seconds 2) <~> do
-- We already waited two seconds as a simple rate limiter.
-- Next, wait until at least one commit has been made
void getCommits
-- Now see if now's a good time to push.
void $ pushToRemotes =<< pushTargets
{- We want to avoid pushing to remotes that are marked readonly.
-
- Also, avoid pushing to local remotes we can easily tell are not available,
- to avoid ugly messages when a removable drive is not attached.
-}
pushTargets :: Assistant [Remote]
pushTargets = liftAnnex . filterM (Remote.checkAvailable True)
=<< candidates <$> getDaemonStatus
where
candidates = filter (not . Remote.readonly) . syncGitRemotes