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|
{- git-annex command
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
- Copyright 2011 Joachim Breitner <mail@joachim-breitner.de>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE BangPatterns #-}
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 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
!branch <- currentBranch
remotes <- syncRemotes branch args
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 ] ++
[ mergeAnnex ] ++
[ pushLocal branch ] ++
[ pushRemote remote branch | remote <- remotes ]
syncRemotes :: Git.Ref -> [String] -> Annex [Remote.Remote Annex]
syncRemotes branch [] = defaultSyncRemotes branch
syncRemotes _ rs = mapM Remote.byName rs
defaultSyncRemotes :: Git.Ref -> Annex [Remote.Remote Annex]
defaultSyncRemotes branch =
mapM Remote.byName
=<< process . L.unpack <$> inRepo showref
where
syncbranch = Git.Ref $ "refs/heads/synced/" ++ Git.Ref.describe branch
showref = Git.Command.pipeRead
[Param "show-ref", Param (Git.Ref.describe syncbranch)]
process = map getRemoteName . filter isRemote .
map getBranchName . lines
isRemote r = "refs/remotes/" `isPrefixOf` r
getBranchName = snd . separate (== ' ')
getRemoteName = fst . separate (== '/') . snd . separate (== '/') . snd . separate (== '/')
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
mergeAnnex :: CommandStart
mergeAnnex = next $ next $ do
Annex.Branch.forceUpdate
return True
|
