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torrentmanager.py
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torrentmanager.py
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# -*- coding: utf-8 -*-
#
# Copyright (C) 2007-2009 Andrew Resch <andrewresch@gmail.com>
#
# This file is part of Deluge and is licensed under GNU General Public License 3.0, or later, with
# the additional special exception to link portions of this program with the OpenSSL library.
# See LICENSE for more details.
#
"""TorrentManager handles Torrent objects"""
import cPickle
import datetime
import logging
import operator
import os
import shutil
import time
from twisted.internet import defer, reactor, threads
from twisted.internet.defer import Deferred, DeferredList
from twisted.internet.task import LoopingCall
import deluge.component as component
from deluge._libtorrent import lt
from deluge.common import decode_string, get_magnet_info, utf8_encoded
from deluge.configmanager import ConfigManager, get_config_dir
from deluge.core.authmanager import AUTH_LEVEL_ADMIN
from deluge.core.torrent import Torrent, TorrentOptions, sanitize_filepath
from deluge.error import AddTorrentError, InvalidTorrentError
from deluge.event import (PreTorrentRemovedEvent, SessionStartedEvent, TorrentAddedEvent, TorrentFileCompletedEvent,
TorrentFileRenamedEvent, TorrentFinishedEvent, TorrentRemovedEvent, TorrentResumedEvent)
log = logging.getLogger(__name__)
class TorrentState: # pylint: disable=old-style-class
"""
Create a torrent state
This must be old style class to avoid breaking torrent.state file
"""
def __init__(self,
torrent_id=None,
filename=None,
trackers=None,
storage_mode="sparse",
paused=False,
save_path=None,
max_connections=-1,
max_upload_slots=-1,
max_upload_speed=-1.0,
max_download_speed=-1.0,
prioritize_first_last=False,
sequential_download=False,
file_priorities=None,
queue=None,
auto_managed=True,
is_finished=False,
stop_ratio=2.00,
stop_at_ratio=False,
remove_at_ratio=False,
move_completed=False,
move_completed_path=None,
magnet=None,
owner=None,
shared=False,
super_seeding=False,
priority=0,
name=None):
# Build the class atrribute list from args
for key, value in locals().items():
if key == "self":
continue
setattr(self, key, value)
class TorrentManagerState: # pylint: disable=old-style-class
"""TorrentManagerState holds a list of TorrentState objects
This must be old style class to avoid breaking torrent.state file
"""
def __init__(self):
self.torrents = []
class TorrentManager(component.Component):
"""TorrentManager contains a list of torrents in the current libtorrent session.
This object is also responsible for saving the state of the session for use on restart.
"""
def __init__(self):
component.Component.__init__(self, "TorrentManager", interval=5,
depend=["CorePluginManager", "AlertManager"])
log.debug("TorrentManager init...")
# Set the libtorrent session
self.session = component.get("Core").session
# Set the alertmanager
self.alerts = component.get("AlertManager")
# Get the core config
self.config = ConfigManager("core.conf")
# Make sure the state folder has been created
self.state_dir = os.path.join(get_config_dir(), "state")
if not os.path.exists(self.state_dir):
os.makedirs(self.state_dir)
self.temp_file = os.path.join(self.state_dir, ".safe_state_check")
# Create the torrents dict { torrent_id: Torrent }
self.torrents = {}
self.queued_torrents = set()
self.is_saving_state = False
self.save_resume_data_file_lock = defer.DeferredLock()
self.torrents_loading = {}
# This is a map of torrent_ids to Deferreds used to track needed resume data.
# The Deferreds will be completed when resume data has been saved.
self.waiting_on_resume_data = {}
# Keep track of torrents finished but moving storage
self.waiting_on_finish_moving = []
# Keeps track of resume data
self.resume_data = {}
self.torrents_status_requests = []
self.status_dict = {}
self.last_state_update_alert_ts = 0
# Register set functions
self.config.register_set_function("max_connections_per_torrent",
self.on_set_max_connections_per_torrent)
self.config.register_set_function("max_upload_slots_per_torrent",
self.on_set_max_upload_slots_per_torrent)
self.config.register_set_function("max_upload_speed_per_torrent",
self.on_set_max_upload_speed_per_torrent)
self.config.register_set_function("max_download_speed_per_torrent",
self.on_set_max_download_speed_per_torrent)
# Register alert functions
self.alerts.register_handler("torrent_finished_alert", self.on_alert_torrent_finished)
self.alerts.register_handler("torrent_paused_alert", self.on_alert_torrent_paused)
self.alerts.register_handler("torrent_checked_alert", self.on_alert_torrent_checked)
self.alerts.register_handler("tracker_reply_alert", self.on_alert_tracker_reply)
self.alerts.register_handler("tracker_announce_alert", self.on_alert_tracker_announce)
self.alerts.register_handler("tracker_warning_alert", self.on_alert_tracker_warning)
self.alerts.register_handler("tracker_error_alert", self.on_alert_tracker_error)
self.alerts.register_handler("storage_moved_alert", self.on_alert_storage_moved)
self.alerts.register_handler("storage_moved_failed_alert", self.on_alert_storage_moved_failed)
self.alerts.register_handler("torrent_resumed_alert", self.on_alert_torrent_resumed)
self.alerts.register_handler("state_changed_alert", self.on_alert_state_changed)
self.alerts.register_handler("save_resume_data_alert", self.on_alert_save_resume_data)
self.alerts.register_handler("save_resume_data_failed_alert", self.on_alert_save_resume_data_failed)
self.alerts.register_handler("file_renamed_alert", self.on_alert_file_renamed)
self.alerts.register_handler("metadata_received_alert", self.on_alert_metadata_received)
self.alerts.register_handler("file_error_alert", self.on_alert_file_error)
self.alerts.register_handler("file_completed_alert", self.on_alert_file_completed)
self.alerts.register_handler("state_update_alert", self.on_alert_state_update)
self.alerts.register_handler("external_ip_alert", self.on_alert_external_ip)
self.alerts.register_handler("performance_alert", self.on_alert_performance)
self.alerts.register_handler("fastresume_rejected_alert", self.on_alert_fastresume_rejected)
self.alerts.register_handler("add_torrent_alert", self.on_add_torrent_alert)
# Define timers
self.save_state_timer = LoopingCall(self.save_state)
self.save_resume_data_timer = LoopingCall(self.save_resume_data)
self.prev_status_cleanup_loop = LoopingCall(self.cleanup_torrents_prev_status)
def start(self):
# Check for old temp file to verify safe shutdown
if os.path.isfile(self.temp_file):
def archive_file(filename):
"""Archives the file in 'archive' sub-directory with timestamp appended"""
filepath = os.path.join(self.state_dir, filename)
filepath_bak = filepath + ".bak"
archive_dir = os.path.join(get_config_dir(), "archive")
if not os.path.exists(archive_dir):
os.makedirs(archive_dir)
for _filepath in (filepath, filepath_bak):
timestamp = datetime.datetime.now().replace(microsecond=0).isoformat().replace(':', '-')
archive_filepath = os.path.join(archive_dir, filename + "-" + timestamp)
try:
shutil.copy2(_filepath, archive_filepath)
except IOError:
log.error("Unable to archive: %s", filename)
else:
log.info("Archive of %s successful: %s", filename, archive_filepath)
log.warning("Potential bad shutdown of Deluge detected, archiving torrent state files...")
archive_file("torrents.state")
archive_file("torrents.fastresume")
else:
with file(self.temp_file, 'a'):
os.utime(self.temp_file, None)
# Try to load the state from file
self.load_state()
# Save the state periodically
self.save_state_timer.start(200, False)
self.save_resume_data_timer.start(190, False)
self.prev_status_cleanup_loop.start(10)
@defer.inlineCallbacks
def stop(self):
# Stop timers
if self.save_state_timer.running:
self.save_state_timer.stop()
if self.save_resume_data_timer.running:
self.save_resume_data_timer.stop()
if self.prev_status_cleanup_loop.running:
self.prev_status_cleanup_loop.stop()
# Save state on shutdown
yield self.save_state()
self.session.pause()
result = yield self.save_resume_data(flush_disk_cache=True)
# Remove the temp_file to signify successfully saved state
if result and os.path.isfile(self.temp_file):
os.remove(self.temp_file)
def update(self):
for torrent_id, torrent in self.torrents.items():
# XXX: Should the state check be those that _can_ be stopped at ratio
if torrent.options["stop_at_ratio"] and torrent.state not in (
"Checking", "Allocating", "Paused", "Queued"):
# If the global setting is set, but the per-torrent isn't...
# Just skip to the next torrent.
# This is so that a user can turn-off the stop at ratio option on a per-torrent basis
if not torrent.options["stop_at_ratio"]:
continue
if torrent.get_ratio() >= torrent.options["stop_ratio"] and torrent.is_finished:
if torrent.options["remove_at_ratio"]:
self.remove(torrent_id)
break
if not torrent.handle.status().paused:
torrent.pause()
def __getitem__(self, torrent_id):
"""Return the Torrent with torrent_id.
Args:
torrent_id (str): The torrent_id.
Returns:
Torrent: A torrent object.
"""
return self.torrents[torrent_id]
def get_torrent_list(self):
"""Creates a list of torrent_ids, owned by current user and any marked shared.
Returns:
list: A list of torrent_ids.
"""
torrent_ids = self.torrents.keys()
if component.get("RPCServer").get_session_auth_level() == AUTH_LEVEL_ADMIN:
return torrent_ids
current_user = component.get("RPCServer").get_session_user()
for torrent_id in torrent_ids[:]:
torrent_status = self.torrents[torrent_id].get_status(["owner", "shared"])
if torrent_status["owner"] != current_user and not torrent_status["shared"]:
torrent_ids.pop(torrent_ids.index(torrent_id))
return torrent_ids
def get_torrent_info_from_file(self, filepath):
"""Retrieves torrent_info from the file specified.
Args:
filepath (str): The filepath to extract torrent info from.
Returns:
lt.torrent_info : A libtorrent torrent_info dict or None if invalid file or data.
"""
# Get the torrent data from the torrent file
if log.isEnabledFor(logging.DEBUG):
log.debug("Attempting to extract torrent_info from %s", filepath)
try:
torrent_info = lt.torrent_info(filepath)
except RuntimeError as ex:
log.warning("Unable to open torrent file %s: %s", filepath, ex)
else:
return torrent_info
def add(self, torrent_info=None, state=None, options=None, save_state=True,
filedump=None, filename=None, magnet=None, resume_data=None):
"""Adds a torrent to the torrent manager.
Args:
torrent_info (lt.torrent_info, optional): A libtorrent torrent_info object.
state (TorrentState, optional): The torrent state.
options (dict, optional): The options to apply to the torrent on adding.
save_state (bool, optional): If True save the session state after adding torrent, defaults to True.
filedump (str, optional): bencoded filedump of a torrent file.
filename (str, optional): The filename of the torrent file.
magnet (str, optional): The magnet uri.
resume_data (lt.entry, optional): libtorrent fast resume data.
Returns:
str: If successful the torrent_id of the added torrent, None if adding the torrent failed.
Emits:
TorrentAddedEvent: Torrent with torrent_id added to session.
"""
if not torrent_info and not filedump and not magnet:
raise AddTorrentError("You must specify a valid torrent_info, torrent state or magnet.")
if filedump:
try:
torrent_info = lt.torrent_info(lt.bdecode(filedump))
except RuntimeError as ex:
raise AddTorrentError("Unable to add torrent, decoding filedump failed: %s" % ex)
add_torrent_params = {}
if torrent_info:
add_torrent_params["ti"] = torrent_info
name = torrent_info.name()
if not name:
name = torrent_info.file_at(0).path.replace("\\", "/", 1).split("/", 1)[0]
add_torrent_params["name"] = name
torrent_id = str(torrent_info.info_hash())
elif magnet:
magnet = utf8_encoded(magnet)
magnet_info = get_magnet_info(magnet)
if magnet_info:
add_torrent_params["url"] = magnet
add_torrent_params["name"] = magnet_info["name"]
torrent_id = magnet_info["info_hash"]
else:
raise AddTorrentError("Unable to add magnet, invalid magnet info: %s" % magnet)
# Check for existing torrent in session.
if torrent_id in self.get_torrent_list():
# Attempt merge trackers before returning.
self.torrents[torrent_id].merge_trackers(torrent_info)
raise AddTorrentError("Torrent already in session (%s)." % torrent_id)
elif torrent_id in self.torrents_loading:
raise AddTorrentError("Torrent already being added (%s)." % torrent_id)
# Load default options and update if needed.
_options = TorrentOptions()
if options:
_options.update(options)
options = _options
# Check for renamed files and if so, rename them in the torrent_info before adding.
if options["mapped_files"] and torrent_info:
for index, fname in options["mapped_files"].items():
fname = sanitize_filepath(decode_string(fname))
log.debug("renaming file index %s to %s", index, fname)
try:
torrent_info.rename_file(index, fname)
except TypeError:
torrent_info.rename_file(index, utf8_encoded(fname))
add_torrent_params["ti"] = torrent_info
if not options["owner"]:
options["owner"] = component.get("RPCServer").get_session_user()
if not component.get("AuthManager").has_account(options["owner"]):
options["owner"] = "localclient"
if log.isEnabledFor(logging.DEBUG):
log.debug("options: %s", options)
# Fill in the rest of the add_torrent_params dictionary.
add_torrent_params["save_path"] = utf8_encoded(options["download_location"])
if options["name"]:
add_torrent_params["name"] = options["name"]
if options["pre_allocate_storage"]:
add_torrent_params["storage_mode"] = lt.storage_mode_t.storage_mode_allocate
if resume_data:
add_torrent_params["resume_data"] = resume_data
default_flags = (lt.add_torrent_params_flags_t.flag_paused |
lt.add_torrent_params_flags_t.flag_auto_managed |
lt.add_torrent_params_flags_t.flag_update_subscribe |
lt.add_torrent_params_flags_t.flag_apply_ip_filter)
# Set flags: enable duplicate_is_error & override_resume_data, disable auto_managed.
add_torrent_params["flags"] = ((default_flags |
lt.add_torrent_params_flags_t.flag_duplicate_is_error |
lt.add_torrent_params_flags_t.flag_override_resume_data) ^
lt.add_torrent_params_flags_t.flag_auto_managed)
if options["seed_mode"]:
add_torrent_params["flags"] |= lt.add_torrent_params_flags_t.flag_seed_mode
d = Deferred()
try:
self.torrents_loading[torrent_id] = (d, options, state, filename, magnet, resume_data, filedump, save_state)
self.session.async_add_torrent(add_torrent_params)
except RuntimeError as ex:
raise AddTorrentError("Unable to add torrent to session: %s" % ex)
return d
def on_add_torrent_alert(self, alert):
"""Alert handler for libtorrent add_torrent_alert"""
if not alert.handle.is_valid():
log.warn("Torrent handle is invalid!")
return
try:
torrent_id = str(alert.handle.info_hash())
except RuntimeError as ex:
log.warn("Failed to get torrent id from handle: %s", ex)
return
d, options, state, filename, magnet, resume_data, filedump, save_state = self.torrents_loading.pop(torrent_id)
# Create a Torrent object and add to the dictionary.
torrent = Torrent(alert.handle, options, state, filename, magnet)
self.torrents[torrent.torrent_id] = torrent
# Store the orignal resume_data, in case of errors.
if resume_data:
self.resume_data[torrent.torrent_id] = resume_data
# Add to queued torrents set.
self.queued_torrents.add(torrent.torrent_id)
if self.config["queue_new_to_top"]:
self.queue_top(torrent.torrent_id)
# Resume the torrent if needed.
if not options["add_paused"]:
torrent.resume()
# Emit torrent_added signal.
from_state = state is not None
component.get("EventManager").emit(TorrentAddedEvent(torrent.torrent_id, from_state))
if log.isEnabledFor(logging.DEBUG):
log.debug("Torrent added: %s", str(alert.handle.info_hash()))
if log.isEnabledFor(logging.INFO):
name_and_owner = torrent.get_status(["name", "owner"])
log.info("Torrent %s from user \"%s\" %s",
name_and_owner["name"],
name_and_owner["owner"],
from_state and "loaded" or "added")
# Write the .torrent file to the state directory.
if filedump:
torrent.write_torrentfile(filedump)
# Save the session state.
if save_state:
self.save_state()
d.callback(torrent.torrent_id)
def remove(self, torrent_id, remove_data=False, save_state=True):
"""Remove a torrent from the session.
Args:
torrent_id (str): The torrent ID to remove.
remove_data (bool, optional): If True, remove the downloaded data, defaults to False.
save_state (bool, optional): If True, save the session state after removal, defaults to True.
Returns:
bool: True if removed successfully, False if not.
Emits:
PreTorrentRemovedEvent: Torrent is about to be removed from session.
TorrentRemovedEvent: Torrent with torrent_id removed from session.
Raises:
InvalidTorrentError: If the torrent_id is not in the session.
"""
try:
torrent = self.torrents[torrent_id]
except KeyError:
raise InvalidTorrentError("torrent_id '%s' not in session." % torrent_id)
torrent_name = torrent.get_status(["name"])["name"]
# Emit the signal to the clients
component.get("EventManager").emit(PreTorrentRemovedEvent(torrent_id))
try:
self.session.remove_torrent(torrent.handle, 1 if remove_data else 0)
except RuntimeError as ex:
log.warning("Error removing torrent: %s", ex)
return False
# Remove fastresume data if it is exists
self.resume_data.pop(torrent_id, None)
# Remove the .torrent file in the state and copy location, if user requested.
delete_copies = self.config["copy_torrent_file"] and self.config["del_copy_torrent_file"]
torrent.delete_torrentfile(delete_copies)
# Remove from set if it wasn't finished
if not torrent.is_finished:
try:
self.queued_torrents.remove(torrent_id)
except KeyError:
log.debug("%s isn't in queued torrents set?", torrent_id)
raise InvalidTorrentError("%s isn't in queued torrents set?" % torrent_id)
# Remove the torrent from deluge's session
del self.torrents[torrent_id]
if save_state:
self.save_state()
# Emit the signal to the clients
component.get("EventManager").emit(TorrentRemovedEvent(torrent_id))
log.info("Torrent %s removed by user: %s", torrent_name, component.get("RPCServer").get_session_user())
return True
def fixup_state(self, state):
""" Fixup an old state by adding missing TorrentState options and assigning default values.
Args:
state (TorrentManagerState): A torrentmanager state containing torrent details.
Returns:
TorrentManagerState: A fixedup TorrentManager state.
"""
if state.torrents:
t_state_tmp = TorrentState()
if dir(state.torrents[0]) != dir(t_state_tmp):
try:
for attr in set(dir(t_state_tmp)) - set(dir(state.torrents[0])):
for t_state in state.torrents:
if attr == "storage_mode" and getattr(t_state, "compact", None):
setattr(t_state, attr, "compact")
else:
setattr(t_state, attr, getattr(t_state_tmp, attr, None))
except AttributeError as ex:
log.error("Unable to update state file to a compatible version: %s", ex)
return state
def open_state(self):
"""Open the torrents.state file containing a TorrentManager state with session torrents.
Returns:
TorrentManagerState: The TorrentManager state.
"""
torrents_state = os.path.join(self.state_dir, "torrents.state")
for filepath in (torrents_state, torrents_state + ".bak"):
log.info("Loading torrent state: %s", filepath)
try:
with open(filepath, "rb") as _file:
state = cPickle.load(_file)
except (IOError, EOFError, cPickle.UnpicklingError) as ex:
log.warning("Unable to load %s: %s", filepath, ex)
state = None
else:
log.info("Successfully loaded %s", filepath)
break
if state is None:
state = TorrentManagerState()
return state
def load_state(self):
"""Load all the torrents from TorrentManager state into session
Emits:
SessionStartedEvent: Emitted after all torrents are added to the session.
"""
start = datetime.datetime.now()
state = self.open_state()
state = self.fixup_state(state)
# Reorder the state.torrents list to add torrents in the correct queue order.
state.torrents.sort(key=operator.attrgetter("queue"), reverse=self.config["queue_new_to_top"])
resume_data = self.load_resume_data_file()
deferreds = []
for t_state in state.torrents:
# Populate the options dict from state
options = TorrentOptions()
for option in options:
try:
options[option] = getattr(t_state, option)
except AttributeError:
pass
# Manually update unmatched attributes
options["download_location"] = t_state.save_path
options["pre_allocate_storage"] = t_state.storage_mode == "allocate"
options["prioritize_first_last_pieces"] = t_state.prioritize_first_last
options["add_paused"] = t_state.paused
magnet = t_state.magnet
torrent_info = self.get_torrent_info_from_file(
os.path.join(self.state_dir, t_state.torrent_id + ".torrent"))
if torrent_info:
magnet = None
try:
d = self.add(torrent_info=torrent_info, state=t_state, options=options, save_state=False,
magnet=magnet, resume_data=resume_data.get(t_state.torrent_id))
except AddTorrentError as ex:
log.warn("Error when adding torrent '%s' to session: %s", t_state.torrent_id, ex)
else:
deferreds.append(d)
deferred_list = DeferredList(deferreds, consumeErrors=False)
def on_complete(result):
log.info("Finished loading %d torrents in %s", len(state.torrents), str(datetime.datetime.now() - start))
component.get("EventManager").emit(SessionStartedEvent())
deferred_list.addCallback(on_complete)
def create_state(self):
"""Create a state of all the torrents in TorrentManager.
Returns:
TorrentManagerState: The TorrentManager state.
"""
state = TorrentManagerState()
# Create the state for each Torrent and append to the list
for torrent in self.torrents.values():
if self.session.is_paused():
paused = torrent.handle.is_paused()
elif torrent.forced_error:
paused = torrent.forced_error.was_paused
elif torrent.state == "Paused":
paused = True
else:
paused = False
torrent_state = TorrentState(
torrent.torrent_id,
torrent.filename,
torrent.trackers,
torrent.get_status(["storage_mode"])["storage_mode"],
paused,
torrent.options["download_location"],
torrent.options["max_connections"],
torrent.options["max_upload_slots"],
torrent.options["max_upload_speed"],
torrent.options["max_download_speed"],
torrent.options["prioritize_first_last_pieces"],
torrent.options["sequential_download"],
torrent.options["file_priorities"],
torrent.get_queue_position(),
torrent.options["auto_managed"],
torrent.is_finished,
torrent.options["stop_ratio"],
torrent.options["stop_at_ratio"],
torrent.options["remove_at_ratio"],
torrent.options["move_completed"],
torrent.options["move_completed_path"],
torrent.magnet,
torrent.options["owner"],
torrent.options["shared"],
torrent.options["super_seeding"],
torrent.options["priority"],
torrent.options["name"]
)
state.torrents.append(torrent_state)
return state
def save_state(self):
"""
Run the save state task in a separate thread to avoid blocking main thread.
If a save task is already running, this call is ignored.
"""
if self.is_saving_state:
return defer.succeed(None)
self.is_saving_state = True
d = threads.deferToThread(self._save_state)
def on_state_saved(arg):
self.is_saving_state = False
if self.save_state_timer.running:
self.save_state_timer.reset()
d.addBoth(on_state_saved)
return d
def _save_state(self):
"""Save the state of the TorrentManager to the torrents.state file."""
state = self.create_state()
if not state.torrents:
log.debug("Skipping saving state with no torrents loaded")
return
filename = "torrents.state"
filepath = os.path.join(self.state_dir, filename)
filepath_bak = filepath + ".bak"
filepath_tmp = filepath + ".tmp"
try:
log.debug("Creating the temporary file: %s", filepath_tmp)
with open(filepath_tmp, "wb", 0) as _file:
cPickle.dump(state, _file)
_file.flush()
os.fsync(_file.fileno())
except (OSError, cPickle.PicklingError) as ex:
log.error("Unable to save %s: %s", filename, ex)
return
try:
log.debug("Creating backup of %s at: %s", filename, filepath_bak)
if os.path.isfile(filepath_bak):
os.remove(filepath_bak)
if os.path.isfile(filepath):
os.rename(filepath, filepath_bak)
except OSError as ex:
log.error("Unable to backup %s to %s: %s", filepath, filepath_bak, ex)
return
try:
log.debug("Saving %s to: %s", filename, filepath)
os.rename(filepath_tmp, filepath)
except OSError as ex:
log.error("Failed to set new state file %s: %s", filepath, ex)
if os.path.isfile(filepath_bak):
log.info("Restoring backup of state from: %s", filepath_bak)
os.rename(filepath_bak, filepath)
def save_resume_data(self, torrent_ids=None, flush_disk_cache=False):
"""Saves torrents resume data.
Args:
torrent_ids (list of str): A list of torrents to save the resume data for, defaults
to None which saves all torrents resume data.
flush_disk_cache (bool, optional): If True flushes the disk cache which avoids potential
issue with file timestamps, defaults to False. This is only needed when stopping the session.
Returns:
t.i.d.DeferredList: A list of twisted Deferred callbacks to be invoked when save is complete.
"""
if torrent_ids is None:
torrent_ids = (t[0] for t in self.torrents.iteritems() if t[1].handle.need_save_resume_data())
def on_torrent_resume_save(dummy_result, torrent_id):
"""Recieved torrent resume_data alert so remove from waiting list"""
self.waiting_on_resume_data.pop(torrent_id, None)
deferreds = []
for torrent_id in torrent_ids:
d = self.waiting_on_resume_data.get(torrent_id)
if not d:
d = Deferred().addBoth(on_torrent_resume_save, torrent_id)
self.waiting_on_resume_data[torrent_id] = d
deferreds.append(d)
self.torrents[torrent_id].save_resume_data(flush_disk_cache)
def on_all_resume_data_finished(dummy_result):
"""Saves resume data file when no more torrents waiting for resume data
Returns:
bool: True if fastresume file is saved.
Used by remove_temp_file callback in stop.
"""
# Use flush_disk_cache as a marker for shutdown so fastresume is
# saved even if torrents are waiting.
if not self.waiting_on_resume_data or flush_disk_cache:
return self.save_resume_data_file(queue_task=flush_disk_cache)
return DeferredList(deferreds).addBoth(on_all_resume_data_finished)
def load_resume_data_file(self):
"""Load the resume data from file for all torrents
Returns:
dict: A dict of torrents and their resume_data
"""
filename = "torrents.fastresume"
filepath = os.path.join(self.state_dir, filename)
filepath_bak = filepath + ".bak"
old_data_filepath = os.path.join(get_config_dir(), filename)
for _filepath in (filepath, filepath_bak, old_data_filepath):
log.info("Opening %s for load: %s", filename, _filepath)
try:
with open(_filepath, "rb") as _file:
resume_data = lt.bdecode(_file.read())
except (IOError, EOFError, RuntimeError) as ex:
if self.torrents:
log.warning("Unable to load %s: %s", _filepath, ex)
resume_data = None
else:
log.info("Successfully loaded %s: %s", filename, _filepath)
break
# If the libtorrent bdecode doesn't happen properly, it will return None
# so we need to make sure we return a {}
if resume_data is None:
return {}
else:
return resume_data
def save_resume_data_file(self, queue_task=False):
"""
Save resume data to file in a separate thread to avoid blocking main thread.
Args:
queue_task (bool): If True and a save task is already running then
queue this save task to run next. Default is to
not queue save tasks.
Returns:
Deferred: Fires with arg, True if save task was successful, False if
not and None if task was not performed.
"""
if not queue_task and self.save_resume_data_file_lock.locked:
return defer.succeed(None)
def on_lock_aquired():
d = threads.deferToThread(self._save_resume_data_file)
def on_resume_data_file_saved(arg):
if self.save_resume_data_timer.running:
self.save_resume_data_timer.reset()
return arg
d.addBoth(on_resume_data_file_saved)
return d
return self.save_resume_data_file_lock.run(on_lock_aquired)
def _save_resume_data_file(self):
"""Saves the resume data file with the contents of self.resume_data"""
if not self.resume_data:
return True
filename = "torrents.fastresume"
filepath = os.path.join(self.state_dir, filename)
filepath_bak = filepath + ".bak"
filepath_tmp = filepath + ".tmp"
try:
log.debug("Creating the temporary file: %s", filepath_tmp)
with open(filepath_tmp, "wb", 0) as _file:
_file.write(lt.bencode(self.resume_data))
_file.flush()
os.fsync(_file.fileno())
except (OSError, EOFError) as ex:
log.error("Unable to save %s: %s", filename, ex)
return False
try:
log.debug("Creating backup of %s at: %s", filename, filepath_bak)
if os.path.isfile(filepath_bak):
os.remove(filepath_bak)
if os.path.isfile(filepath):
os.rename(filepath, filepath_bak)
except OSError as ex:
log.error("Unable to backup %s to %s: %s", filepath, filepath_bak, ex)
return False
try:
log.debug("Saving %s to: %s", filename, filepath)
os.rename(filepath_tmp, filepath)
except OSError as ex:
log.error("Failed to set new file %s: %s", filepath, ex)
if os.path.isfile(filepath_bak):
log.info("Restoring backup from: %s", filepath_bak)
os.rename(filepath_bak, filepath)
else:
# Sync the rename operations for the directory
if hasattr(os, 'O_DIRECTORY'):
dirfd = os.open(os.path.dirname(filepath), os.O_DIRECTORY)
os.fsync(dirfd)
os.close(dirfd)
return True
def get_queue_position(self, torrent_id):
"""Get queue position of torrent"""
return self.torrents[torrent_id].get_queue_position()
def queue_top(self, torrent_id):
"""Queue torrent to top"""
if self.torrents[torrent_id].get_queue_position() == 0:
return False
self.torrents[torrent_id].handle.queue_position_top()
return True
def queue_up(self, torrent_id):
"""Queue torrent up one position"""
if self.torrents[torrent_id].get_queue_position() == 0:
return False
self.torrents[torrent_id].handle.queue_position_up()
return True
def queue_down(self, torrent_id):
"""Queue torrent down one position"""
if self.torrents[torrent_id].get_queue_position() == (len(self.queued_torrents) - 1):
return False
self.torrents[torrent_id].handle.queue_position_down()
return True
def queue_bottom(self, torrent_id):
"""Queue torrent to bottom"""
if self.torrents[torrent_id].get_queue_position() == (len(self.queued_torrents) - 1):
return False
self.torrents[torrent_id].handle.queue_position_bottom()
return True
def cleanup_torrents_prev_status(self):
"""Run cleanup_prev_status for each registered torrent"""
for torrent in self.torrents.iteritems():
torrent[1].cleanup_prev_status()
def on_set_max_connections_per_torrent(self, key, value):
"""Sets the per-torrent connection limit"""
log.debug("max_connections_per_torrent set to %s...", value)
for key in self.torrents.keys():
self.torrents[key].set_max_connections(value)
def on_set_max_upload_slots_per_torrent(self, key, value):
"""Sets the per-torrent upload slot limit"""
log.debug("max_upload_slots_per_torrent set to %s...", value)
for key in self.torrents.keys():
self.torrents[key].set_max_upload_slots(value)
def on_set_max_upload_speed_per_torrent(self, key, value):
"""Sets the per-torrent upload speed limit"""
log.debug("max_upload_speed_per_torrent set to %s...", value)
for key in self.torrents.keys():
self.torrents[key].set_max_upload_speed(value)
def on_set_max_download_speed_per_torrent(self, key, value):
"""Sets the per-torrent download speed limit"""
log.debug("max_download_speed_per_torrent set to %s...", value)
for key in self.torrents.keys():
self.torrents[key].set_max_download_speed(value)
# --- Alert handlers ---
def on_alert_torrent_finished(self, alert):
"""Alert handler for libtorrent torrent_finished_alert"""
log.debug("on_alert_torrent_finished")
try:
torrent_id = str(alert.handle.info_hash())
torrent = self.torrents[torrent_id]
except (RuntimeError, KeyError):
return
log.debug("Finished %s ", torrent_id)
# If total_download is 0, do not move, it's likely the torrent wasn't downloaded, but just added.
# Get fresh data from libtorrent, the cache isn't always up to date
total_download = torrent.get_status(["total_payload_download"], update=True)["total_payload_download"]
if log.isEnabledFor(logging.DEBUG):
log.debug("Torrent settings: is_finished: %s, total_download: %s, move_completed: %s, move_path: %s",
torrent.is_finished, total_download, torrent.options["move_completed"],
torrent.options["move_completed_path"])
torrent.update_state()
if not torrent.is_finished and total_download:
# Move completed download to completed folder if needed
if torrent.options["move_completed"] and \
torrent.options["download_location"] != torrent.options["move_completed_path"]:
self.waiting_on_finish_moving.append(torrent_id)
torrent.move_storage(torrent.options["move_completed_path"])
else:
torrent.is_finished = True
component.get("EventManager").emit(TorrentFinishedEvent(torrent_id))
else:
torrent.is_finished = True
# Torrent is no longer part of the queue
try:
self.queued_torrents.remove(torrent_id)
except KeyError:
# Sometimes libtorrent fires a TorrentFinishedEvent twice
if log.isEnabledFor(logging.DEBUG):
log.debug("%s isn't in queued torrents set?", torrent_id)
# Only save resume data if it was actually downloaded something. Helps
# on startup with big queues with lots of seeding torrents. Libtorrent
# emits alert_torrent_finished for them, but there seems like nothing
# worth really to save in resume data, we just read it up in
# self.load_state().
if total_download:
self.save_resume_data((torrent_id, ))
def on_alert_torrent_paused(self, alert):
"""Alert handler for libtorrent torrent_paused_alert"""
if log.isEnabledFor(logging.DEBUG):
log.debug("on_alert_torrent_paused")
try:
torrent_id = str(alert.handle.info_hash())
torrent = self.torrents[torrent_id]
except (RuntimeError, KeyError):
return
torrent.update_state()
# Write the fastresume file if we are not waiting on a bulk write