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added checkPresentExportWithContentIdentifier

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Ugh, don't like needing to add this, but I can't see a way around it.
This commit is contained in:
Joey Hess 2019-03-05 16:02:33 -04:00
parent 3c652e1499
commit 46d33e804a
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5 changed files with 130 additions and 92 deletions
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11
doc/design/importing_trees_from_special_remotes.mdwn
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@ -219,6 +219,8 @@ This is an extension to the ExportActions api.
removeExportDirectoryWhenEmpty :: Maybe (ExportDirectory -> Annex Bool)
checkPresentExportWithContentIdentifier :: Key -> ExportLocation -> [ContentIdentifier] -> Annex (Maybe Bool)
listContents finds the current set of files that are stored in the remote,
some of which may have been written by other programs than git-annex,
along with their content identifiers. It returns a list of those, often in
@ -273,6 +275,15 @@ removeExportDirectoryWhenEmpty is used instead of removeExportDirectory.
It should only remove empty directories, and succeeds if there are files
in the directory.
checkPresentExportWithContentIdentifier is used instead of
checkPresentExport. It should verify that one of the provided
ContentIdentifiers matches the current content of the file.
Note that renameExport is never used when the special remote supports
imports, because it may have an implementation that loses changes
to imported files. (For example, it may copy the file to the new name,
and delete the old name.)
## multiple git-annex repos accessing a special remote
If multiple repos can access the remote at the same time, then there's a