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* document that encryption + bup = inneficientGravatar Joey Hess2014-08-02
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* convert glacier to new ChunkedEncryptable API (but do not support chunking)Gravatar Joey Hess2014-08-02
| | | | | | | | Chunking would complicate the assistant's code that checks when a pending retrieval of a key from glacier is done. It would perhaps be nice to support it to allow resuming, but not right now. Converting to the new API still simplifies the code.
* S3: support chunkingGravatar Joey Hess2014-08-02
| | | | | | | The assistant defaults to 1MiB chunk size for new S3 special remotes. Which will work around a couple of bugs: http://git-annex.branchable.com/bugs/S3_memory_leaks/ http://git-annex.branchable.com/bugs/S3_upload_not_using_multipart/
* specialize Preparer a bit, so resourcePrepare can be addedGravatar Joey Hess2014-08-02
| | | | | | | The forall a. in Preparer made resourcePrepare not seem to be usable, so I specialized a to Bool. Which works for both Preparer Storer and Preparer Retriever, but wouldn't let the Preparer be used for hasKey as it currently stands.
* testremote now tests with and without encryptionGravatar Joey Hess2014-08-01
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* fix example external remote script to write files atomicallyGravatar Joey Hess2014-08-01
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* minor optimisationGravatar Joey Hess2014-08-01
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* testremote: Test retrieveKeyFile resumeGravatar Joey Hess2014-08-01
| | | | | | | And fixed a bug found by these tests; retrieveKeyFile would fail when the dest file was already complete. This commit was sponsored by Bradley Unterrheiner.
* improve testremote command, adding chunk size testingGravatar Joey Hess2014-08-01
| | | | And also a --size parameter to configure the basic object size.
* deriving ShowGravatar Joey Hess2014-08-01
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* fix a fenchpost bug when resuming chunked store at endGravatar Joey Hess2014-08-01
| | | | Discovered thanks to testremote command!
* fix chunk=0Gravatar Joey Hess2014-08-01
| | | | Found by testremote
* testremote: New command to test uploads/downloads to a remote.Gravatar Joey Hess2014-08-01
| | | | | | | | | This only performs some basic tests so far; no testing of chunking or resuming. Also, the existing encryption type of the remote is used; it would be good later to derive an encrypted and a non-encrypted version of the remote and test them both. This commit was sponsored by Joseph Liu.
* add new section for testing commandsGravatar Joey Hess2014-08-01
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* chunk size adviceGravatar Joey Hess2014-07-30
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* WebDAV: Dropped support for DAV before 0.6.1.Gravatar Joey Hess2014-07-30
| | | | | 0.6.1 is in testing, and stable does not have DAV at all, so I can dispense with this compatability code
* only chunk stable keysGravatar Joey Hess2014-07-30
| | | | | | The content of unstable keys can potentially be different in different repos, so eg, resuming a chunked upload started by another repo would corrupt data.
* update progress after each chunk, at leastGravatar Joey Hess2014-07-29
| | | | | | This way, when the remote implementation neglects to update progress, there will still be a somewhat useful progress display, as long as chunks are used.
* fix cleanup of FileContents once done when them when retrievingGravatar Joey Hess2014-07-29
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* optimise case of remote that retrieves FileContent, when chunks and ↵Gravatar Joey Hess2014-07-29
| | | | | | | | | | encryption are not being used No need to read whole FileContent only to write it back out to a file in this case. Can just rename! Yay. Also indidentially, fixed an attempt to open a file for write that was already opened for write, which caused a crash and deadlock.
* support chunking for all external special remotes!Gravatar Joey Hess2014-07-29
| | | | | | | Removing code and at the same time adding great features, including upload/download resuming. This commit was sponsored by Romain Lenglet.
* better type for RetrieverGravatar Joey Hess2014-07-29
| | | | | | | | Putting a callback in the Retriever type allows for the callback to remove the retrieved file when it's done with it. I did not really want to make Retriever be fixed to Annex Bool, but when I tried to use Annex a, I got into some type of type mess.
* allow Retriever action to update the progress meterGravatar Joey Hess2014-07-29
| | | | | | | | Needed for eg, Remote.External. Generally, any Retriever that stores content in a file is responsible for updating the meter, while ones that procude a lazy bytestring cannot update the meter, so are not asked to.
* lift types from IO to AnnexGravatar Joey Hess2014-07-29
| | | | | | | | | | | Some remotes like External need to run store and retrieve actions in Annex, not IO. In order to do that lift, I had to dive pretty deep into the utilities, making Utility.Gpg and Utility.Tmp be partly converted to using MonadIO, and Control.Monad.Catch for exception handling. There should be no behavior changes in this commit. This commit was sponsored by Michael Barabanov.
* add ContentSource type, for remotes that act on files rather than ByteStringsGravatar Joey Hess2014-07-29
| | | | | Note that currently nothing cleans up a ContentSource's file, when eg, retrieving chunks.
* fix non-checked hasKeyChunksGravatar Joey Hess2014-07-29
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* make explicit the implicit requirement that CHECKPRESENT not say a key is ↵Gravatar Joey Hess2014-07-28
| | | | present until it's all done being stored
* resume interrupted chunked uploadsGravatar Joey Hess2014-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Leverage the new chunked remotes to automatically resume uploads. Sort of like rsync, although of course not as efficient since this needs to start at a chunk boundry. But, unlike rsync, this method will work for S3, WebDAV, external special remotes, etc, etc. Only directory special remotes so far, but many more soon! This implementation will also allow starting an upload from one repository, interrupting it, and then resuming the upload to the same remote from an entirely different repository. Note that I added a comment that storeKey should atomically move the content into place once it's all received. This was already an undocumented requirement -- it's necessary for hasKey to work reliably. This resume code just uses hasKey to find the first chunk that's missing. Note that if there are two uploads of the same key to the same chunked remote, one might resume at the point the other had gotten to, but both will then redundantly upload. As before. In the non-resume case, this adds one hasKey call per storeKey, and only if the remote is configured to use chunks. Future work: Try to eliminate that hasKey. Notice that eg, `git annex copy --to` checks if the key is present before sending it, so is already running hasKey.. which could perhaps be cached and reused. However, this additional overhead is not very large compared with transferring an entire large file, and the ability to resume is certianly worth it. There is an optimisation in place for small files, that avoids trying to resume if the whole file fits within one chunk. This commit was sponsored by Georg Bauer.
* fix handling of removal of keys that are not presentGravatar Joey Hess2014-07-28
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* add ChunkMethod type and make Logs.Chunk use it, rather than assuming fixed ↵Gravatar Joey Hess2014-07-28
| | | | | | | | size chunks (so eg, rolling hash chunks can be supported later) If a newer git-annex starts logging something else in the chunk log, it won't be used by this version, but it will be preserved when updating the log.
* Merge branch 'master' of ssh://git-annex.branchable.com into newchunksGravatar Joey Hess2014-07-28
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| * (no commit message)Gravatar divB2014-07-27
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| * (no commit message)Gravatar divB2014-07-27
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| * devblogGravatar Joey Hess2014-07-27
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* | resume interrupted chunked downloadsGravatar Joey Hess2014-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Leverage the new chunked remotes to automatically resume downloads. Sort of like rsync, although of course not as efficient since this needs to start at a chunk boundry. But, unlike rsync, this method will work for S3, WebDAV, external special remotes, etc, etc. Only directory special remotes so far, but many more soon! This implementation will also properly handle starting a download from one remote, interrupting, and resuming from another one, and so on. (Resuming interrupted chunked uploads is similarly doable, although slightly more expensive.) This commit was sponsored by Thomas Djärv.
* | add key stability checking interfaceGravatar Joey Hess2014-07-27
| | | | | | | | | | | | | | Needed for resuming from chunks. Url keys are considered not stable. I considered treating url keys with a known size as stable, but just don't feel that is enough information.
* | use map for faster backend name lookupGravatar Joey Hess2014-07-27
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* | Merge branch 'master' into newchunksGravatar Joey Hess2014-07-27
|\| | | | | | | | | Conflicts: doc/design/assistant/chunks.mdwn
| * updateGravatar Joey Hess2014-07-27
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* | use existing chunks even when chunk=0Gravatar Joey Hess2014-07-27
| | | | | | | | | | | | | | | | | | | | When chunk=0, always try the unchunked key first. This avoids the overhead of needing to read the git-annex branch to find the chunkcount. However, if the unchunked key is not present, go on and try the chunks. Also, when removing a chunked key, update the chunkcounts even when chunk=0.
* | reorgGravatar Joey Hess2014-07-27
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* | comment typoGravatar Joey Hess2014-07-27
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* | faster storeChunksGravatar Joey Hess2014-07-27
| | | | | | | | | | | | | | | | | | | | | | No need to process each L.ByteString chunk, instead ask it to split. Doesn't seem to have really sped things up much, but it also made the code simpler. Note that this does (and already did) buffer in memory. It seems that only the directory special remote could take advantage of streaming chunks to files w/o buffering, so probably won't add an interface to allow for that.
* | better Preparer interfaceGravatar Joey Hess2014-07-27
| | | | | | | | | | | | | | This will allow things like WebDAV to opean a single persistent connection and reuse it for all the chunked data. The crazy types allow for some nice code reuse.
* | update does for chunkingGravatar Joey Hess2014-07-26
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* | improve exception handlingGravatar Joey Hess2014-07-26
| | | | | | | | | | | | | | | | Push it down from needing to be done in every Storer, to being checked once inside ChunkedEncryptable. Also, catch exceptions from PrepareStorer and PrepareRetriever, just in case..
* | add some more exception handling primitivesGravatar Joey Hess2014-07-26
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* | better exception displayGravatar Joey Hess2014-07-26
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* | fix key checking when a directory special remote's directory is missingGravatar Joey Hess2014-07-26
| | | | | | | | | | The best thing to do in this case is return Left, so that anything that tries to access it will fail.
* | fix another fallback bugGravatar Joey Hess2014-07-26
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