72 lines
2.3 KiB
Python
72 lines
2.3 KiB
Python
"""Onionr - Private P2P Communication.
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Upload pool
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"""
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from typing import List
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from secrets import SystemRandom
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import onionrutils
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import onionrtypes
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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 PoolFullException(Exception):
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"""For when the UploadPool is full.
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Raise when a new hash is attempted to be added
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"""
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class PoolNotReady(Exception):
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"""Raise when UploadPool pool access is attempted without it being full."""
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class AlreadyInPool(Exception):
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"""Raise when a hash already in pool is attempted to be added again."""
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class UploadPool:
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"""Upload pool for mixing blocks together and delaying uploads."""
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def __init__(self, pool_size: int):
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"""Create a new pool with a specified max size.
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Uses private var and getter to avoid direct adding
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"""
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self._pool: List[onionrtypes.BlockHash] = []
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self._pool_size = pool_size
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self.birthday = onionrutils.epoch.get_epoch()
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def add_to_pool(self, item: List[onionrtypes.BlockHash]):
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"""Add a new hash to the pool. Raise PoolFullException if full."""
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if len(self._pool) >= self._pool_size:
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raise PoolFullException
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if not onionrutils.stringvalidators.validate_hash(item):
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raise ValueError
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self._pool.append(item)
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def get_pool(self) -> List[onionrtypes.BlockHash]:
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"""Get the hash pool in secure random order."""
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if len(self._pool) != self._pool_size:
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raise PoolNotReady
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final_pool: List[onionrtypes.BlockHash] = list(self._pool)
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SystemRandom().shuffle(final_pool)
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self._pool.clear()
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self.birthday = onionrutils.epoch.get_epoch()
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return final_pool
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