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|
{- git-annex command
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Sync where
import Common.Annex
import Command
import qualified Remote
import qualified Annex.Branch
import qualified Git.Command
import qualified Git.Config
import qualified Git.Ref
import qualified Git
import qualified Command.Merge
import qualified Data.ByteString.Lazy.Char8 as L
def :: [Command]
def = [command "sync" (paramOptional (paramRepeating paramRemote))
[seek] "synchronize local repository with remote repositories"]
-- syncing involves several operations, any of which can independantly fail
seek :: CommandSeek
seek args = do
remotes <- if null args
then defaultSyncRemotes
else mapM Remote.byName args
branch <- currentBranch
showStart "syncing" $ "branch " ++ Git.Ref.describe branch ++ " with remote repositories " ++ intercalate "," (map Remote.name remotes)
showOutput
return $
[ commit
, mergeLocal branch
] ++
[ fetch remote | remote <- remotes ] ++
[ mergeRemote remote branch | remote <- remotes ] ++
[ Command.Merge.start ] ++
[ pushLocal branch ] ++
[ pushRemote remote branch | remote <- remotes ]
defaultSyncRemotes :: Annex [Remote.Remote Annex]
defaultSyncRemotes = undefined
commit :: CommandStart
commit = do
showStart "commit" ""
next $ next $ do
showOutput
-- Commit will fail when the tree is clean, so ignore failure.
_ <- inRepo $ Git.Command.runBool "commit"
[Param "-a", Param "-m", Param "git-annex automatic sync"]
return True
mergeLocal :: Git.Ref -> CommandStart
mergeLocal branch =
mergeFromIfExists $ Git.Ref $ "refs/heads/synced/" ++ Git.Ref.describe branch
pushLocal :: Git.Ref -> CommandStart
pushLocal branch = do
let syncBranch = Git.Ref $ "refs/heads/synced/" ++ Git.Ref.describe branch
ex <- inRepo $ Git.Ref.exists syncBranch
if ex then do
showStart "updateing" $
Git.Ref.describe syncBranch ++
" to the state of " ++ Git.Ref.describe branch ++ "..."
next $ next $
inRepo $ Git.Command.runBool "branch" [Param "-f", Param (Git.Ref.describe syncBranch)]
else
return Nothing
mergeFromIfExists :: Git.Ref -> CommandStart
mergeFromIfExists fromBranch = do
ex <- inRepo $ Git.Ref.exists fromBranch
if ex then do
showStart "merging" $ Git.Ref.describe fromBranch ++ "..."
next $ next $
inRepo $ Git.Command.runBool "merge" [Param (show fromBranch)]
else do
showNote $ Git.Ref.describe fromBranch ++ " does not exist, not merging."
showOutput
return Nothing
fetch :: Remote.Remote Annex -> CommandStart
fetch remote = do
showStart "fetching from" (Remote.name remote)
next $ next $ do
showOutput
checkRemote remote
inRepo $ Git.Command.runBool "fetch" [Param (Remote.name remote)]
mergeRemote :: Remote.Remote Annex -> Git.Ref -> CommandStart
mergeRemote remote branch =
mergeFromIfExists $ Git.Ref $ "refs/remotes/" ++ Remote.name remote ++ "/synced/" ++ Git.Ref.describe branch
pushRemote :: Remote.Remote Annex -> Git.Ref -> CommandStart
pushRemote remote branch = do
showStart "pushing to" (Remote.name remote)
let syncbranch = Git.Ref $ "refs/heads/synced/" ++ Git.Ref.describe branch
let syncbranchRemote = Git.Ref $ "refs/remotes/" ++ Remote.name remote ++ "/" ++ Git.Ref.describe syncbranch
let refspec = Git.Ref.describe branch ++ ":" ++ Git.Ref.describe syncbranch
ex <- inRepo $ Git.Ref.exists syncbranchRemote
next $ next $ do
showOutput
inRepo $ Git.Command.runBool "push" $
[ Param (Remote.name remote)
, Param (Git.Ref.describe Annex.Branch.name) ] ++
[ Param refspec | ex ]
currentBranch :: Annex Git.Ref
currentBranch = Git.Ref . firstLine . L.unpack <$>
inRepo (Git.Command.pipeRead [Param "symbolic-ref", Param "HEAD"])
checkRemote :: Remote.Remote Annex -> Annex ()
checkRemote remote = do
remoteurl <- fromRepo $
Git.Config.get ("remote." ++ Remote.name remote ++ ".url") ""
when (null remoteurl) $
error $ "No url is configured for the remote: " ++ Remote.name remote
|
