* Added simple getReadOnly()/getReadOnlyReason() functions.
* Allow directly passing a LockManager object into __construct(), useful for testing.
* Fixed bug in FSFileBackend were creating empty files would result in a failing status.
* Added more file stat unit tests.
* Moved some public static functions from FileBackend to FileBackendBase as the later defines the public API.
* Made splitStoragePath() return null if the backend or container name is empty.
* Made normalizeContainerPath() kill leading directory separators.
* Added more unit tests and made some documentation tweaks.
In FSFileBackend:
* Added resolveContainerName() to disallow '.' a container name, since this would cause a traversal.
* Removed FileBackendBase::resolveWikiId(); doesn't really work well with FileBackendMultiWrite and the functionality is best handled in resolveContainerName(). Follows-up r108303.
* Gave FileOp::doAttempt() a default implementation (a no-op) to be more libertarian.
* Some documentation tweaks.
* Added normalizeStoragePath() function. Use it for normalizing paths in the stat cache. This way, if someone clears a non-normal form of path from the cache, it will actually work as expected.
* Removed 'abstract' flag from FileBackendBase::clearCache().
* Documentation tweaks.
* Use 'b' param in some fopen() calls as needed for Windows and newline handling.
* Removed some useless padding code in FileBackend::getContainerShard(). Initialized $m to make IDE happy.
* Updated some code comments.
In SwiftFileBackend:
* Manually set the ETag when using php-cloudfiles for creating files to avoid https://github.com/rackspace/php-cloudfiles/issues/59.
* Manually set the content type based on how StreamFile::getType(). This makes it safe to read files directly out of the proxy to end-users. The streamFile() backend functions already uses a similar content-type check.
* Ternary operator avoided a call to wfWikiID()
* We really want to explicitly choose the manager
use LockManagerGroup->get( 'nullLockManager' )
* defaultConfig no more needed if it handles just one parameter that
we want to set explicitly
* Made FileBackend::getFileProps() final.
* Added exception needed in SwiftFileBackend::getConnection().
* Various FileBackendTests fixes and additions. Optimized it a bit by keeping the backend instance in memory.
* In StoreBatchTest: sed proper clean() function to remove temp dirs (follows up r109641). Also removed some commented out code.
* Fixed temp dir leakage in FileBackendTest.
* Fixed bogus $params var in logException() call in SwiftFileBackend.
* Added 'latest' param to FileBackendMultliWrite::consistencyCheck().
* Dummy-proof FileBackend::getFileStat() w.r.t the 'latest' param and removed related FileOp::allowStaleReads() comment.
* Tweaked backend-fail-batchsize message from r109469.
* Added a sane default max file size to FileBackend. Operation batches need to check this before trying anything.
* Temporarily adjust the PHP execution time limit in attemptBatch() to reduce the chance of dying in the middle of it. Also added a maximum batch size limit.
* Added some code comments.
* Added SHA-1 to FileOp::attemptBatch $predicates (since concatenate was removed from FileOp). This lets us get rid of temp file backups, as the remaining failure case is just the backend medium going down (the ops would break in that case anyway). Doing so reduces RTTs and backup file I/O overhead. This also simplifies expiry object support by avoiding having to stash the expiry values of temp backup objects somewhere.
* Improved precheck() and attempt() status logic in FileOp::attemptBatch() a bit. Use separate $subStatus var to check if each op is OK.
* A few minor code cleanups and comment tweaks.
* Fixed MoveFileOp bug found in unit tests when the source/dest are the same and an overwriteDest/overwriteSame param is given (the file would just get deleted). Improved CopyFileOp in this case too.
Other:
* Added more unit tests.
* Renamed FSFileIterator -> FSFileBackendFileList
* Renamed SwiftFileIterator -> SwiftFileBackendFileList and added it to autoloader
* A few minor doc fixes
* Made secure() call doPrepare() for caller dummy proofing (especially those that don't check the status).
In FSFileBackend:
* Removed redundant wfMkdirParents() calls in FSFileBackend, we already have prepare() for this purpose. This also keeps it's behavior more consistent with the other backends.
* Made use of 'backend-fail-store' message in doStoreInternal().
Other:
* Updated unit tests and renamed $src => $source in some functions for consistency.
* Added some documentation comments and @since tags.
* Made SwiftFileBackend respect the 'latest' parameter of various functions via "X-Newest: true" header. Added to TODO in the doGetFileStat() function, as cloudfiles needs upstream changes for that.
* Fixed SwiftFileIterator to return paths relative to the given directory.
* Clean up for FSFileBackend trailing slash handling.
* Made 'success', 'successCount', and 'failCount' fields reflect the overall operation in FileBackendMultiWrite::doOperationsInternal(). This makes it match up with single-write backends.
* Made FileBackend::clearCache() part of the public API.
* Added getFileSize()/getFileStat() functions. Refactored some functions to use the stat function for better reuse and caching/consistency.
* Refactored streamFile() to allow for subclasses to avoid local file copying with less duplication. Also make last-modified check actually work since we always get the timestamp of the original file.
* Renamed 'ignoreErrors' parameter to 'force'.
In FileBackendMultiWrite:
* Simplified how read ops are done (use 'master' backend for consistency).
* Added consistency check to doOperationsInternal() to check if the files are synced.
* Various fixes after testing.
In StreamFile:
* Split out prepareForStream() function from stream() in StreamFile for code reuse.
In FileBackendTest:
* Properly cover FileBackendMultiWrite in tests.
* Various test improvements.
* Replaced 'media' portion of container names with the repo name. This makes it easy for multiple repos to use the same backend without 'wikiId' hacks. Full container names are now like <wiki>-<repo>-<zone> (or <repo>-<zone> if 'wikiId' is set to an empty string).
* Restricted isValidContainerName() more in light of Azure portability and shorted shard suffix.
* Bumped $maxCacheSize to 75 storage paths.
* Code comment cleanups and additions.
Unit tests:
* Updated related tests and marked testBug29408() as broken (I can't find the problem).
* Reduced leakage in UploadFromUrlTestSuite a bit.
