* Rewrite the backend manager.
This creates a new more logic backend manager that handles all backend operations.
For each top-level operation, there is now a single backend manager instance that is passed to sub-commands.
The internals of the backend manager are now rewritten to use async logic instead of threading.
The design uses a single task runner that dispatches operations and honors concurrent settings and limits from one place.
The logic for each operation has been moved into a separate files/classes to make it easier to understand each operation.
This fixes#5804
* Fixed a few issues with not awaiting tasks
* Fixed not creating empty databases
* Fixed an issue with hashes not being recorded on download
* Reworked the download logic to avoid attempting to decrypt the file if it has been modified.
* Review fixes
* Renamed db collector to better reflect the purpose.
* Review fixes
* Simplified task control by having all logic in a single class and using async control mechanism
* Fixed the tests
* Made the marking of a backup partial explicitly communicated if the enumeration process is stopped.
* Added support for pausing active transfers
* Introduced transfer token to abort operations.
* Updated the way LiveControl is emitting events.
* Retains the paused state of the server across reboots, this fixes#5760.
* Reworked the way throttle speeds are propagated through LiveControls.
* Added option to pause transfers in the UI.
* Removed throttle settings from the LiveControls class so it is exclusively handled by the ApplicationSettings.
* Removed `thread-priority` as it does not work at all when tasks are used.
* Fixed the stop dialog and API to only support stop and abort.
* Removed unused variables
The first optimization was to add guards around the queries in case the second collection is empty (which is was when the slow path was found).
The second optimization is to use a HashSet for the second collection, as this speeds up lookup, compared to using two List of string.
Before the dindex files are deleted on the remote, update the state in the database to Deleting. Previously, only dblock files were handled this way.
Patch by warwickmm
Closes#4129
When a backup is interrupted it will now show as a partial backup in the list of backups on the restore files page.
Temporary filelist volumes are protected from deletion in several places. All but the RestoreHandler
only protect the most recent filelist. The RestoreHandler protects all temporary filelist volumes as the user
might be restoring from one that would be deleted.
Prevent the CoCoL BackendRequests channel is retired exception from appearing when the backup is stopped by checking
if the channel is retired before trying to add the FlushRequest to the channel. Any exceptions from the BackendUploader
task will still be thrown.
The list folder was not being written to dindex files when performing a
compact operation. After the data blocks have been moved to a new volume
and the new volume data is finished being written to the new index file,
read the blocklists from the database and write them to the new index
file.
Previously, the indentation of the following code block gave the
impression that it was part of the foreach loop when in fact it would
only be executed once.
Implemented better output for Restore.
Fixed a problem with errors during dispose, and a problem with selecting filesets that do not exist.
Fixed a bug with restore if a file existed with some correct data, a copy would be restored with partial data.
Added check to try to avoid excessive restores of the same files if a file in another version already exists.
Kenneth Skovhede