53526136e8
This is groundwork for nested seek loops, eg seeking over all files and then performing commandActions on a list of remotes, which can be done concurrently. This commit was sponsored by Boyd Stephen Smith Jr. on Patreon.
77 lines
2.4 KiB
Haskell
77 lines
2.4 KiB
Haskell
{- git-annex command
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-
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- Copyright 2013 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Command.Mirror where
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import Command
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import qualified Command.Move
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import qualified Command.Drop
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import qualified Command.Get
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import qualified Remote
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import Annex.Content
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import Annex.NumCopies
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import Types.Transfer
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cmd :: Command
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cmd = withGlobalOptions [jobsOption, jsonOptions, jsonProgressOption, annexedMatchingOptions] $
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command "mirror" SectionCommon
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"mirror content of files to/from another repository"
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paramPaths (seek <--< optParser)
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data MirrorOptions = MirrorOptions
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{ mirrorFiles :: CmdParams
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, fromToOptions :: FromToOptions
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, keyOptions :: Maybe KeyOptions
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}
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optParser :: CmdParamsDesc -> Parser MirrorOptions
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optParser desc = MirrorOptions
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<$> cmdParams desc
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<*> parseFromToOptions
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<*> optional (parseKeyOptions <|> parseFailedTransfersOption)
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instance DeferredParseClass MirrorOptions where
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finishParse v = MirrorOptions
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<$> pure (mirrorFiles v)
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<*> finishParse (fromToOptions v)
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<*> pure (keyOptions v)
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seek :: MirrorOptions -> CommandSeek
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seek o = allowConcurrentOutput $
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withKeyOptions (keyOptions o) False
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(commandAction . startKey o (AssociatedFile Nothing))
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(withFilesInGit (commandAction . (whenAnnexed $ start o)))
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=<< workTreeItems (mirrorFiles o)
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start :: MirrorOptions -> FilePath -> Key -> CommandStart
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start o file k = startKey o afile (k, mkActionItem afile)
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where
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afile = AssociatedFile (Just file)
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startKey :: MirrorOptions -> AssociatedFile -> (Key, ActionItem) -> CommandStart
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startKey o afile (key, ai) = onlyActionOn key $ case fromToOptions o of
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ToRemote r -> checkFailedTransferDirection ai Upload $ ifM (inAnnex key)
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( Command.Move.toStart Command.Move.RemoveNever afile key ai =<< getParsed r
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, do
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numcopies <- getnumcopies
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Command.Drop.startRemote afile ai numcopies key =<< getParsed r
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)
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FromRemote r -> checkFailedTransferDirection ai Download $ do
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haskey <- flip Remote.hasKey key =<< getParsed r
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case haskey of
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Left _ -> stop
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Right True -> Command.Get.start' (return True) Nothing key afile ai
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Right False -> ifM (inAnnex key)
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( do
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numcopies <- getnumcopies
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Command.Drop.startLocal afile ai numcopies key []
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, stop
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)
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where
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getnumcopies = case afile of
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AssociatedFile Nothing -> getNumCopies
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AssociatedFile (Just af) -> getFileNumCopies af
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