* doQuickOperations() lets us do things like purge thumbnails as fast as possible.
Stat calls, SHA1 checks, and RTTs in general are avoided. It also avoids the
slowness of lazy population of thumbnail SHA1s in Swift (for those made by rewrite.py).
* Removed supportedOperations() to avoid the extra complexity.
* Made a few variable type and exception documentation cleanups.
* Cleaned up unit test file removal a bit and made some functions private.
Change-Id: I6922368c6af7752a6927d96402519132203108a1
* FS backends work via popen() and basic shell commands.
* Swift backends use the custom SwiftCloudFiles async features.
* Refactored storagePathsRead()/storagePathsChanged() to normalize the paths
for correct dependency detection in FileOpBatch.
* Cleaned up SwiftFileBackend exception handling to make debugging easier.
* Added a quick and dirty performance testing script.
* Updated unit tests to include a run with parallelize=implicit.
* Improved file test failure output a bit.
Change-Id: I6a5ed743c30c598e0dd7301dbdb3631c460332fd
* Added directoryExists() function to check if a dir exists.
* Added getDirectoryList() and getTopDirectoryList() functions to list out subdirs.
* Added getTopFileList() function to list out immediate files in a dir. This wraps getFileList(), which was modified.
Change-Id: I087835f40d76c41f5d6af55b9a34a51e0f44a675
* Added FileJournal class to log file changes for file backends. This can be used for migrations (like moving to Swift), syncing mirror repos, consistency checks, finishing/reverting operation batches, and such. The default journal is the "null" journal, which simply does nothing.
* Added the optional schema change required for using the DBFileJournal (MySQL, SQLite).
Change-Id: I33c9f9a598ba1f164c862b9dc3c718f9172db02b
* Added FileJournal class to log file changes for file backends. This can be used for migrations (like moving to Swift), syncing mirror repos, consistency checks, finishing/reverting operation batches, and such. The default journal is the "null" journal, which simply does nothing.
* Added the optional schema change required for using the DBFileJournal (MySQL, SQLite).
