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|
{- git-annex assistant git pushing thread
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Assistant.Threads.Pusher where
import Assistant.Common
import Assistant.Commits
import Assistant.Pushes
import Assistant.Alert
import Assistant.ThreadedMonad
import Assistant.DaemonStatus
import Assistant.Sync
import Utility.ThreadScheduler
import qualified Remote
import Data.Time.Clock
thisThread :: ThreadName
thisThread = "Pusher"
{- This thread retries pushes that failed before. -}
pushRetryThread :: ThreadState -> DaemonStatusHandle -> FailedPushMap -> IO ()
pushRetryThread st dstatus pushmap = runEvery (Seconds halfhour) $ do
-- We already waited half an hour, now wait until there are failed
-- pushes to retry.
topush <- getFailedPushesBefore pushmap (fromIntegral halfhour)
unless (null topush) $ do
debug thisThread
[ "retrying"
, show (length topush)
, "failed pushes"
]
now <- getCurrentTime
void $ alertWhile dstatus (pushRetryAlert topush) $
pushToRemotes thisThread now st (Just pushmap) topush
where
halfhour = 1800
{- This thread pushes git commits out to remotes soon after they are made. -}
pushThread :: ThreadState -> DaemonStatusHandle -> CommitChan -> FailedPushMap -> IO ()
pushThread st dstatus commitchan pushmap = do
runEvery (Seconds 2) $ do
-- We already waited two seconds as a simple rate limiter.
-- Next, wait until at least one commit has been made
commits <- getCommits commitchan
-- Now see if now's a good time to push.
now <- getCurrentTime
if shouldPush now commits
then do
remotes <- filter (not . Remote.specialRemote) .
knownRemotes <$> getDaemonStatus dstatus
unless (null remotes) $
void $ alertWhile dstatus (pushAlert remotes) $
pushToRemotes thisThread now st (Just pushmap) remotes
else do
debug thisThread
[ "delaying push of"
, show (length commits)
, "commits"
]
refillCommits commitchan commits
{- Decide if now is a good time to push to remotes.
-
- Current strategy: Immediately push all commits. The commit machinery
- already determines batches of changes, so we can't easily determine
- batches better.
-}
shouldPush :: UTCTime -> [Commit] -> Bool
shouldPush _now commits
| not (null commits) = True
| otherwise = False
|
