add RemoteStateHandle
This solves the problem of sameas remotes trampling over per-remote state. Used for: * per-remote state, of course * per-remote metadata, also of course * per-remote content identifiers, because two remote implementations could in theory generate the same content identifier for two different peices of content While chunk logs are per-remote data, they don't use this, because the number and size of chunks stored is a common property across sameas remotes. External special remote had a complication, where it was theoretically possible for a remote to send SETSTATE or GETSTATE during INITREMOTE or EXPORTSUPPORTED. Since the uuid of the remote is typically generate in Remote.setup, it would only be possible to pass a Maybe RemoteStateHandle into it, and it would otherwise have to construct its own. Rather than go that route, I decided to send an ERROR in this case. It seems unlikely that any existing external special remote will be affected. They would have to make up a git-annex key, and set state for some reason during INITREMOTE. I can imagine such a hack, but it doesn't seem worth complicating the code in such an ugly way to support it. Unfortunately, both TestRemote and Annex.Import needed the Remote to have a new field added that holds its RemoteStateHandle.
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31 changed files with 274 additions and 209 deletions
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@ -39,8 +39,8 @@ remote = RemoteType
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, importSupported = importUnsupported
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}
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gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> Annex (Maybe Remote)
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gen r u c gc = do
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gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> RemoteStateHandle -> Annex (Maybe Remote)
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gen r u c gc rs = do
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cst <- remoteCost gc $
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if ddarLocal ddarrepo
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then nearlyCheapRemoteCost
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@ -85,6 +85,7 @@ gen r u c gc = do
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, getInfo = return [("repo", ddarRepoLocation ddarrepo)]
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, claimUrl = Nothing
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, checkUrl = Nothing
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, remoteStateHandle = rs
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}
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ddarrepo = maybe (giveup "missing ddarrepo") (DdarRepo gc) (remoteAnnexDdarRepo gc)
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specialcfg = (specialRemoteCfg c)
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