cleanup lookupblocks
Kevin
parent
e174b4a636
commit
63e676ed6f
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@ -1,4 +1,4 @@
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"""Onionr - Private P2P Communication
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"""Onionr - Private P2P Communication.
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Lookup new blocks with the communicator using a random connected peer
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"""
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@ -8,7 +8,7 @@ import logger
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import onionrproofs
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from onionrutils import stringvalidators, epoch
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from communicator import peeraction, onlinepeers
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from coredb import blockmetadb
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from coredb.blockmetadb import get_block_list
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from utils import reconstructhash
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from onionrblocks import onionrblacklist
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import onionrexceptions
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@ -36,20 +36,24 @@ def lookup_blocks_from_communicator(comm_inst):
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logger.info('Looking up new blocks')
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tryAmount = 2
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newBlocks = ''
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existingBlocks = blockmetadb.get_block_list() # List of existing saved blocks
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triedPeers = [] # list of peers we've tried this time around
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maxBacklog = 1560 # Max amount of *new* block hashes to have already in queue, to avoid memory exhaustion
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lastLookupTime = 0 # Last time we looked up a particular peer's list
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# List of existing saved blocks
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existingBlocks = get_block_list()
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triedPeers = [] # list of peers we've tried this time around
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# Max amount of *new* block hashes to have in queue
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maxBacklog = 1560
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lastLookupTime = 0 # Last time we looked up a particular peer's list
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new_block_count = 0
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for i in range(tryAmount):
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listLookupCommand = 'getblocklist' # This is defined here to reset it each time
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# Defined here to reset it each time, time offset is added later
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listLookupCommand = 'getblocklist'
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if len(comm_inst.blockQueue) >= maxBacklog:
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break
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if not comm_inst.isOnline:
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break
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# check if disk allocation is used
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if comm_inst.storage_counter.is_full():
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logger.debug('Not looking up new blocks due to maximum amount of allowed disk space used')
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logger.debug(
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'Not looking up new blocks due to maximum amount of disk used')
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break
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try:
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# select random online peer
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@ -65,32 +69,41 @@ def lookup_blocks_from_communicator(comm_inst):
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continue
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triedPeers.append(peer)
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# Get the last time we looked up a peer's stamp to only fetch blocks since then.
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# Get the last time we looked up a peer's stamp,
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# to only fetch blocks since then.
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# Saved in memory only for privacy reasons
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try:
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lastLookupTime = comm_inst.dbTimestamps[peer]
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except KeyError:
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lastLookupTime = epoch.get_epoch() - config.get("general.max_block_age", onionrvalues.DEFAULT_EXPIRE)
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lastLookupTime = epoch.get_epoch() - \
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config.get("general.max_block_age",
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onionrvalues.DEFAULT_EXPIRE)
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listLookupCommand += '?date=%s' % (lastLookupTime,)
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try:
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newBlocks = peeraction.peer_action(comm_inst, peer, listLookupCommand) # get list of new block hashes
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newBlocks = peeraction.peer_action(
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comm_inst,
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peer, listLookupCommand) # get list of new block hashes
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except Exception as error:
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logger.warn('Could not get new blocks from %s.' % peer, error = error)
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logger.warn(
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f'Could not get new blocks from {peer}.',
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error=error)
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newBlocks = False
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else:
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comm_inst.dbTimestamps[peer] = epoch.get_rounded_epoch(roundS=60)
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if newBlocks != False:
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if newBlocks != False: # noqa
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# if request was a success
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for i in newBlocks.split('\n'):
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if stringvalidators.validate_hash(i):
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i = reconstructhash.reconstruct_hash(i)
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# if newline seperated string is valid hash
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if not i in existingBlocks:
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# if block does not exist on disk and is not already in block queue
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# if block does not exist on disk + is not already in queue
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if i not in existingBlocks:
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if i not in comm_inst.blockQueue:
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if onionrproofs.hashMeetsDifficulty(i) and not blacklist.inBlacklist(i):
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if onionrproofs.hashMeetsDifficulty(i) and \
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not blacklist.inBlacklist(i):
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if len(comm_inst.blockQueue) <= 1000000:
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comm_inst.blockQueue[i] = [peer] # add blocks to download queue
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# add blocks to download queue
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comm_inst.blockQueue[i] = [peer]
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new_block_count += 1
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else:
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if peer not in comm_inst.blockQueue[i]:
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@ -100,7 +113,9 @@ def lookup_blocks_from_communicator(comm_inst):
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block_string = ""
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if new_block_count > 1:
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block_string = "s"
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logger.info('Discovered %s new block%s' % (new_block_count, block_string), terminal=True)
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comm_inst.download_blocks_timer.count = int(comm_inst.download_blocks_timer.frequency * 0.99)
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logger.info(
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f'Discovered {new_block_count} new block{block_string}',
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terminal=True)
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comm_inst.download_blocks_timer.count = \
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int(comm_inst.download_blocks_timer.frequency * 0.99)
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comm_inst.decrementThreadCount('lookup_blocks_from_communicator')
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return
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