git-annex/Command/Mirror.hs
Joey Hess be36e208c2
json object for FileNotFound
When a nonexistant file is passed to a command and  --json-error-messages
is enabled, output a JSON object indicating the problem.

(But git ls-files --error-unmatch still displays errors about such files in
some situations.)

I don't like the duplication of the name of the command introduced by this,
but I can't see a great way around it. One way would be to pass the Command
instead.

When json is not enabled, the stderr is unchanged. This is necessary
because some commands like find have custom output. So dislaying
"find foo not found" would be wrong. So had to complicate things with
toplevelFileProblem having different output with and without json.

When not using --json-error-messages but still using --json, it displays
the error to stderr, but does display a json object without the error. It
does have an errorid though. Unsure how useful that behavior is.

Sponsored-by: Dartmouth College's Datalad project
2023-04-25 19:26:20 -04:00

90 lines
2.8 KiB
Haskell

{- git-annex command
-
- Copyright 2013 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.Mirror where
import Command
import qualified Command.Move
import qualified Command.Drop
import qualified Command.Get
import qualified Remote
import Annex.Content
import Annex.NumCopies
import Types.Transfer
cmd :: Command
cmd = withAnnexOptions [jobsOption, jsonOptions, jsonProgressOption, annexedMatchingOptions] $
command "mirror" SectionCommon
"mirror content of files to/from another repository"
paramPaths (seek <--< optParser)
data MirrorOptions = MirrorOptions
{ mirrorFiles :: CmdParams
, fromToOptions :: FromToOptions
, keyOptions :: Maybe KeyOptions
}
optParser :: CmdParamsDesc -> Parser MirrorOptions
optParser desc = MirrorOptions
<$> cmdParams desc
<*> parseFromToOptions
<*> optional (parseKeyOptions <|> parseFailedTransfersOption)
instance DeferredParseClass MirrorOptions where
finishParse v = MirrorOptions
<$> pure (mirrorFiles v)
<*> finishParse (fromToOptions v)
<*> pure (keyOptions v)
seek :: MirrorOptions -> CommandSeek
seek o = startConcurrency stages $
withKeyOptions (keyOptions o) False seeker
(commandAction . startKey o (AssociatedFile Nothing))
(withFilesInGitAnnex ww seeker)
=<< workTreeItems ww (mirrorFiles o)
where
stages = case fromToOptions o of
FromRemote _ -> transferStages
ToRemote _ -> commandStages
ww = WarnUnmatchLsFiles "mirror"
seeker = AnnexedFileSeeker
{ startAction = start o
, checkContentPresent = Nothing
, usesLocationLog = True
}
start :: MirrorOptions -> SeekInput -> RawFilePath -> Key -> CommandStart
start o si file k = startKey o afile (si, k, ai)
where
afile = AssociatedFile (Just file)
ai = mkActionItem (k, afile)
startKey :: MirrorOptions -> AssociatedFile -> (SeekInput, Key, ActionItem) -> CommandStart
startKey o afile (si, key, ai) = case fromToOptions o of
ToRemote r -> checkFailedTransferDirection ai Upload $ ifM (inAnnex key)
( Command.Move.toStart Command.Move.RemoveNever afile key ai si =<< getParsed r
, do
(numcopies, mincopies) <- getSafestNumMinCopies afile key
Command.Drop.startRemote pcc afile ai si numcopies mincopies key (Command.Drop.DroppingUnused False)
=<< getParsed r
)
FromRemote r -> checkFailedTransferDirection ai Download $ do
haskey <- flip Remote.hasKey key =<< getParsed r
case haskey of
Left _ -> stop
Right True -> ifM (inAnnex key)
( stop
, Command.Get.start' (return True) Nothing key afile ai si
)
Right False -> ifM (inAnnex key)
( do
(numcopies, mincopies) <- getSafestNumMinCopies afile key
Command.Drop.startLocal pcc afile ai si numcopies mincopies key [] (Command.Drop.DroppingUnused False)
, stop
)
where
pcc = Command.Drop.PreferredContentChecked False