206 lines
8.2 KiB
Python
206 lines
8.2 KiB
Python
"""
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The `singleCleaner` class is a timer-driven thread that cleans data structures
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to free memory, resends messages when a remote node doesn't respond, and
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sends pong messages to keep connections alive if the network isn't busy.
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It cleans these data structures in memory:
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- inventory (moves data to the on-disk sql database)
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- inventorySets (clears then reloads data out of sql database)
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It cleans these tables on the disk:
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- inventory (clears expired objects)
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- pubkeys (clears pubkeys older than 4 weeks old which we have not used
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personally)
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- knownNodes (clears addresses which have not been online for over 3 days)
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It resends messages when there has been no response:
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- resends getpubkey messages in 5 days (then 10 days, then 20 days, etc...)
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- resends msg messages in 5 days (then 10 days, then 20 days, etc...)
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"""
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# pylint: disable=relative-import, protected-access
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import gc
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import os
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from datetime import datetime, timedelta
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import time
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import shared
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import knownnodes
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import queues
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import state
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import tr
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from bmconfigparser import BMConfigParser
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from helper_sql import sqlQuery, sqlExecute
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from inventory import Inventory
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from network.connectionpool import BMConnectionPool
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from network.threads import StoppableThread
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class singleCleaner(StoppableThread):
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"""The singleCleaner thread class"""
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name = "singleCleaner"
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cycleLength = 300
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expireDiscoveredPeers = 300
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def run(self): # pylint: disable=too-many-branches
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gc.disable()
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timeWeLastClearedInventoryAndPubkeysTables = 0
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try:
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shared.maximumLengthOfTimeToBotherResendingMessages = (
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float(BMConfigParser().get(
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'bitmessagesettings', 'stopresendingafterxdays'))
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* 24 * 60 * 60
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) + (
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float(BMConfigParser().get(
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'bitmessagesettings', 'stopresendingafterxmonths'))
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* (60 * 60 * 24 * 365) / 12)
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except:
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# Either the user hasn't set stopresendingafterxdays and
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# stopresendingafterxmonths yet or the options are missing
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# from the config file.
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shared.maximumLengthOfTimeToBotherResendingMessages = float('inf')
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# initial wait
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if state.shutdown == 0:
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self.stop.wait(singleCleaner.cycleLength)
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while state.shutdown == 0:
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queues.UISignalQueue.put((
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'updateStatusBar',
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'Doing housekeeping (Flushing inventory in memory to disk...)'
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))
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Inventory().flush()
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queues.UISignalQueue.put(('updateStatusBar', ''))
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# If we are running as a daemon then we are going to fill up the UI
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# queue which will never be handled by a UI. We should clear it to
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# save memory.
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# ..FIXME redundant?
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if shared.thisapp.daemon or not state.enableGUI:
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queues.UISignalQueue.queue.clear()
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if timeWeLastClearedInventoryAndPubkeysTables < \
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int(time.time()) - 7380:
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timeWeLastClearedInventoryAndPubkeysTables = int(time.time())
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Inventory().clean()
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queues.workerQueue.put(('sendOnionPeerObj', ''))
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# pubkeys
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sqlExecute(
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"DELETE FROM pubkeys WHERE time<? AND usedpersonally='no'",
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int(time.time()) - shared.lengthOfTimeToHoldOnToAllPubkeys)
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# Let us resend getpubkey objects if we have not yet heard
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# a pubkey, and also msg objects if we have not yet heard
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# an acknowledgement
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queryreturn = sqlQuery(
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"SELECT toaddress, ackdata, status FROM sent"
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" WHERE ((status='awaitingpubkey' OR status='msgsent')"
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" AND folder='sent' AND sleeptill<? AND senttime>?)",
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int(time.time()), int(time.time())
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- shared.maximumLengthOfTimeToBotherResendingMessages
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)
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for row in queryreturn:
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if len(row) < 2:
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self.logger.error(
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'Something went wrong in the singleCleaner thread:'
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' a query did not return the requested fields. %r',
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row
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)
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self.stop.wait(3)
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break
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toAddress, ackData, status = row
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if status == 'awaitingpubkey':
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self.resendPubkeyRequest(toAddress)
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elif status == 'msgsent':
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self.resendMsg(ackData)
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deleteTrashMsgPermonantly()
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try:
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# Cleanup knownnodes and handle possible severe exception
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# while writing it to disk
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knownnodes.cleanupKnownNodes()
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except Exception as err:
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# pylint: disable=protected-access
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if "Errno 28" in str(err):
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self.logger.fatal(
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'(while writing knownnodes to disk)'
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' Alert: Your disk or data storage volume is full.'
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)
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queues.UISignalQueue.put((
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'alert',
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(tr._translate("MainWindow", "Disk full"),
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tr._translate(
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"MainWindow",
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'Alert: Your disk or data storage volume'
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' is full. Bitmessage will now exit.'),
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True)
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))
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if shared.thisapp.daemon or not state.enableGUI:
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os._exit(1)
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# inv/object tracking
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for connection in BMConnectionPool().connections():
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connection.clean()
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# discovery tracking
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exp = time.time() - singleCleaner.expireDiscoveredPeers
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reaper = (k for k, v in state.discoveredPeers.items() if v < exp)
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for k in reaper:
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try:
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del state.discoveredPeers[k]
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except KeyError:
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pass
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# ..todo:: cleanup pending upload / download
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gc.collect()
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if state.shutdown == 0:
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self.stop.wait(singleCleaner.cycleLength)
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def resendPubkeyRequest(self, address):
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"""Resend pubkey request for address"""
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self.logger.debug(
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'It has been a long time and we haven\'t heard a response to our'
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' getpubkey request. Sending again.'
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)
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try:
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# We need to take this entry out of the neededPubkeys structure
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# because the queues.workerQueue checks to see whether the entry
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# is already present and will not do the POW and send the message
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# because it assumes that it has already done it recently.
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del state.neededPubkeys[address]
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except:
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pass
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queues.UISignalQueue.put((
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'updateStatusBar',
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'Doing work necessary to again attempt to request a public key...'
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))
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sqlExecute(
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'''UPDATE sent SET status='msgqueued' WHERE toaddress=?''',
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address)
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queues.workerQueue.put(('sendmessage', ''))
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def resendMsg(self, ackdata):
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"""Resend message by ackdata"""
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self.logger.debug(
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'It has been a long time and we haven\'t heard an acknowledgement'
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' to our msg. Sending again.'
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)
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sqlExecute(
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'''UPDATE sent SET status='msgqueued' WHERE ackdata=?''',
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ackdata)
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queues.workerQueue.put(('sendmessage', ''))
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queues.UISignalQueue.put((
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'updateStatusBar',
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'Doing work necessary to again attempt to deliver a message...'
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))
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def deleteTrashMsgPermonantly():
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"""This method is used to delete old messages"""
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ndays_before_time = datetime.now() - timedelta(days=30)
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old_messages = time.mktime(ndays_before_time.timetuple())
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sqlExecute("delete from sent where folder = 'trash' and lastactiontime <= ?;", int(old_messages))
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sqlExecute("delete from inbox where folder = 'trash' and received <= ?;", int(old_messages))
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return
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