124 lines
4.5 KiB
Python
124 lines
4.5 KiB
Python
"""Onionr - Private P2P Communication.
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Manager for upload 'sessions'
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"""
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from typing import List, Union, TYPE_CHECKING
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if TYPE_CHECKING:
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from session import UploadSession
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from onionrutils import bytesconverter
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from etc import onionrvalues
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from utils import reconstructhash
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from . import session
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"""
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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class BlockUploadSessionManager:
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"""Holds block UploadSession instances.
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Optionally accepts iterable of sessions to added on init
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Arguments: old_session: iterable of old UploadSession objects
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"""
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def __init__(self, old_sessions: List = None):
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if old_sessions is None:
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self.sessions = []
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else:
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self.sessions = old_sessions
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def add_session(self,
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session_or_block: Union[str,
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bytes,
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session.UploadSession
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]
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) -> session.UploadSession:
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"""Create (or add existing) block upload session.
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from a str/bytes block hex hash, existing UploadSession
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"""
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if isinstance(session_or_block, session.UploadSession):
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if session_or_block not in self.sessions:
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self.sessions.append(session_or_block)
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return session_or_block
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try:
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return self.get_session(session_or_block)
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except KeyError:
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pass
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# convert bytes hash to str
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if isinstance(session_or_block, bytes):
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session_or_block = bytesconverter.bytes_to_str(session_or_block)
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# intentionally not elif
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if isinstance(session_or_block, str):
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new_session = session.UploadSession(session_or_block)
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self.sessions.append(new_session)
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return new_session
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raise ValueError
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def get_session(self,
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block_hash: Union[str, bytes]
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) -> session.UploadSession:
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block_hash = reconstructhash.deconstruct_hash(
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bytesconverter.bytes_to_str(block_hash))
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for sess in self.sessions:
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if sess.block_hash == block_hash:
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return sess
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raise KeyError
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def clean_session(self,
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specific_session: Union[str, 'UploadSession'] = None):
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comm_inst: 'OnionrCommunicatorDaemon' # type: ignore
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comm_inst = self._too_many.get_by_string( # pylint: disable=E1101 type: ignore
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"OnionrCommunicatorDaemon")
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sessions_to_delete = []
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if comm_inst.getUptime() < 120:
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return
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onlinePeerCount = len(comm_inst.onlinePeers)
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# If we have no online peers right now,
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if onlinePeerCount == 0:
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return
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for sess in self.sessions:
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# if over 50% of peers that were online for a session have
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# become unavailable, don't kill sessions
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if sess.total_success_count > onlinePeerCount:
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if onlinePeerCount / sess.total_success_count >= 0.5:
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return
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# Clean sessions if they have uploaded to enough online peers
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if sess.total_success_count <= 0:
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continue
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if (sess.total_success_count / onlinePeerCount) >= onionrvalues.MIN_BLOCK_UPLOAD_PEER_PERCENT:
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sessions_to_delete.append(sess)
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for sess in sessions_to_delete:
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try:
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self.sessions.remove(session)
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except ValueError:
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pass
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# TODO cleanup to one round of search
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# Remove the blocks from the sessions, upload list,
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# and waitforshare list
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try:
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comm_inst.blocksToUpload.remove(
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reconstructhash.reconstruct_hash(sess.block_hash))
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except ValueError:
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pass
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try:
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comm_inst.blocksToUpload.remove(sess.block_hash)
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except ValueError:
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pass
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