246 lines
8.9 KiB
Python
246 lines
8.9 KiB
Python
#
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# torrentmanager.py
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#
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# Copyright (C) 2007 Andrew Resch ('andar') <andrewresch@gmail.com>
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#
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# Deluge is free software.
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#
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# You may redistribute it and/or modify it under the terms of the
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# GNU General Public License, as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option)
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# any later version.
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#
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# deluge is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with deluge. If not, write to:
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# The Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor
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# Boston, MA 02110-1301, USA.
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#
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# In addition, as a special exception, the copyright holders give
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# permission to link the code of portions of this program with the OpenSSL
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# library.
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# You must obey the GNU General Public License in all respects for all of
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# the code used other than OpenSSL. If you modify file(s) with this
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# exception, you may extend this exception to your version of the file(s),
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# but you are not obligated to do so. If you do not wish to do so, delete
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# this exception statement from your version. If you delete this exception
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# statement from all source files in the program, then also delete it here.
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"""TorrentManager handles Torrent objects"""
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import pickle
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import os.path
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import os
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import deluge.libtorrent as lt
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import deluge.common
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from deluge.configmanager import ConfigManager
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from deluge.core.torrent import Torrent
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from deluge.log import LOG as log
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class TorrentState:
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def __init__(self, torrent_id, filename, compact):
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self.torrent_id = torrent_id
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self.filename = filename
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self.compact = compact
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class TorrentManagerState:
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def __init__(self):
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self.torrents = []
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class TorrentManager:
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"""TorrentManager contains a list of torrents in the current libtorrent
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session. This object is also responsible for saving the state of the
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session for use on restart."""
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def __init__(self, session):
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log.debug("TorrentManager init..")
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# Set the libtorrent session
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self.session = session
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# Per torrent connection limit and upload slot limit
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self.max_connections = -1
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self.max_uploads = -1
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# Create the torrents dict { torrent_id: Torrent }
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self.torrents = {}
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# Try to load the state from file
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self.load_state()
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def __del__(self):
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log.debug("TorrentManager shutting down..")
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# Save state on shutdown
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self.save_state()
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def __getitem__(self, torrent_id):
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"""Return the Torrent with torrent_id"""
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return self.torrents[torrent_id]
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def get_torrent_list(self):
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"""Returns a list of torrent_ids"""
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return self.torrents.keys()
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def add(self, filename, filedump=None, compact=None):
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"""Add a torrent to the manager and returns it's torrent_id"""
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log.info("Adding torrent: %s", filename)
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# Get the core config
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config = ConfigManager("core.conf")
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# Make sure 'filename' is a python string
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filename = str(filename)
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# Convert the filedump data array into a string of bytes
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if filedump is not None:
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# If the filedump is already of type str, then it's already been
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# joined.
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if type(filedump) is not str:
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filedump = "".join(chr(b) for b in filedump)
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else:
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# Get the data from the file
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try:
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log.debug("Attempting to open %s for add.", filename)
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filedump = open(os.path.join(config["torrentfiles_location"],
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filename), "rb").read()
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except IOError:
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log.warning("Unable to open %s", filename)
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return None
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# Bdecode the filedata
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torrent_filedump = lt.bdecode(filedump)
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handle = None
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# Make sure we are adding it with the correct allocation method.
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if compact is None:
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compact = config["compact_allocation"]
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try:
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handle = self.session.add_torrent(
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lt.torrent_info(torrent_filedump),
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config["download_location"],
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compact)
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except RuntimeError:
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log.warning("Error adding torrent")
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if not handle or not handle.is_valid():
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# The torrent was not added to the session
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return None
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# Set per-torrent limits
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handle.set_max_connections(self.max_connections)
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handle.set_max_uploads(self.max_uploads)
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log.debug("Attemping to save torrent file: %s", filename)
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# Test if the torrentfiles_location is accessible
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if os.access(os.path.join(config["torrentfiles_location"]), os.F_OK) \
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is False:
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# The directory probably doesn't exist, so lets create it
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try:
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os.makedirs(os.path.join(config["torrentfiles_location"]))
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except IOError:
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log.warning("Unable to create torrent files directory..")
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# Write the .torrent file to the torrent directory
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try:
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save_file = open(os.path.join(config["torrentfiles_location"],
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filename),
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"wb")
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save_file.write(filedump)
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save_file.close()
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except IOError:
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log.warning("Unable to save torrent file: %s", filename)
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log.debug("Torrent %s added.", handle.info_hash())
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# Create a Torrent object
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torrent = Torrent(filename, handle, compact)
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# Add the torrent object to the dictionary
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self.torrents[torrent.torrent_id] = torrent
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# Save the session state
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self.save_state()
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return torrent.torrent_id
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def remove(self, torrent_id):
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"""Remove a torrent from the manager"""
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try:
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# Remove from libtorrent session
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self.session.remove_torrent(self.torrents[torrent_id].handle)
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except RuntimeError, KeyError:
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log.warning("Error removing torrent")
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return False
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try:
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del self.torrents[torrent_id]
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except KeyError, ValueError:
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return False
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# Save the session state
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self.save_state()
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return True
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def pause(self, torrent_id):
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"""Pause a torrent"""
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try:
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self.torrents[torrent_id].handle.pause()
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except:
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return False
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return True
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def resume(self, torrent_id):
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"""Resume a torrent"""
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try:
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self.torrents[torrent_id].handle.resume()
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except:
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return False
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return True
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def load_state(self):
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"""Load the state of the TorrentManager from the torrents.state file"""
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state = TorrentManagerState()
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try:
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log.debug("Opening torrent state file for load.")
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state_file = open(deluge.common.get_config_dir("torrents.state"),
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"rb")
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state = pickle.load(state_file)
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state_file.close()
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except IOError:
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log.warning("Unable to load state file.")
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# Try to add the torrents in the state to the session
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for torrent_state in state.torrents:
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self.add(torrent_state.filename, compact=torrent_state.compact)
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def save_state(self):
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"""Save the state of the TorrentManager to the torrents.state file"""
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state = TorrentManagerState()
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# Create the state for each Torrent and append to the list
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for torrent in self.torrents.values():
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torrent_state = TorrentState(*torrent.get_state())
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state.torrents.append(torrent_state)
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# Pickle the TorrentManagerState object
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try:
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log.debug("Saving torrent state file.")
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state_file = open(deluge.common.get_config_dir("torrents.state"),
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"wb")
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pickle.dump(state, state_file)
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state_file.close()
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except IOError:
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log.warning("Unable to save state file.")
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def set_max_connections(self, value):
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"""Sets the per-torrent connection limit"""
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self.max_connections = value
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for key in self.torrents.keys():
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self.torrents[key].handle.set_max_connections(value)
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def set_max_uploads(self, value):
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"""Sets the per-torrent upload slot limit"""
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self.max_uploads = value
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for key in self.torrents.keys():
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self.torrents[key].handle.set_max_uploads(value)
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