Speedup removing multiple torrents from core

[bro]

Each call to core.remove_torrent took about 1 second on my machine. Most of time 90%+ was used by writing the state file. When removing multiple torrents, the state file is now written after removing all the torrents.

​https://github.com/bendikro/deluge/commit/master-core-remove-torrents

[andar]

You probably shouldn't just remove core.remove_torrent().. Keep it but just call core.remove_torrents() from it with [torrent_id].

If you remove that function you'll likely break other UIs any user written scripts.

[bro]

Good point andar. I've readded the remove_torrent method: ​https://github.com/bendikro/deluge/commits/master-core-remove-torrents2

[bro]

Updated with comments from gazpachoking: ​https://github.com/bendikro/deluge/commit/master-core-remove-torrents3

[bro]

Fixed tests and updated with changes in develop branch: ​https://github.com/bendikro/deluge/commit/develop-core-remove-torrents

[Cas]

A few notes:

• remove_all() is a misleading function name, maybe on_remove_torrents() and also change remove_torrent() for on_remove_torrent()?
• This import should be at top: from twisted.internet import reactor, task
• the docstring in core.remove_torrents needs updated
• torrentmanager.remove() method should be renamed to remove_torrents, it's not descriptive enough (easily confused with list.remove()). Also the method requires an updated docstring.
• The type check in torrentmanager.remove() should be changed so it raises an exception if it's not a list however maybe just remove it as all remove methods should go through core for clients and we can verify that other calls in core use the torrentmanager method correctly.
• We discussed in IRC whether the clients need to know (or care) why a torrent could not be removed, I can't remember the conclusion but do need to verify whether current clients can handle this change e.g. webui.

[bro]

Believe this is ready: ​https://github.com/deluge-torrent/deluge/pull/14

[Cas]

Added to develop: [08363f28dd308]

Should be straightforward for Console and WebUI to utilise this too. I will link a branch/pull request shortly.

[Cas]

Added Console and Web code to develop [faf3f963222b1]

[Cas]

Milestone renamed