Download thread updates

- now tracks downloads globally too, so it doesn't request the same
object from multiple peers at the same time
- retries at the earliest every minute
- stops trying to download an object after an hour
- minor fixes in retrying downloading invalid objects
This commit is contained in:
Peter Šurda 2017-07-05 09:25:49 +02:00
parent 846fced0a2
commit fc19e4119a
Signed by untrusted user: PeterSurda
GPG Key ID: 0C5F50C0B5F37D87
7 changed files with 55 additions and 43 deletions

View File

@ -274,12 +274,12 @@ class Main:
state.invThread = InvThread()
state.invThread.daemon = True
state.invThread.start()
downloadThread = DownloadThread()
downloadThread.daemon = True
downloadThread.start()
state.addrThread = AddrThread()
state.addrThread.daemon = True
state.addrThread.start()
state.downloadThread = DownloadThread()
state.downloadThread.daemon = True
state.downloadThread.start()
connectToStream(1)

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@ -275,47 +275,24 @@ class BMProto(AdvancedDispatcher, ObjectTracker):
self.object.checkEOLSanity()
self.object.checkAlreadyHave()
except (BMObjectExpiredError, BMObjectAlreadyHaveError) as e:
for connection in network.connectionpool.BMConnectionPool().inboundConnections.values() + \
network.connectionpool.BMConnectionPool().outboundConnections.values():
try:
with connection.objectsNewToThemLock:
del connection.objectsNewToThem[self.object.inventoryHash]
except KeyError:
pass
try:
with connection.objectsNewToMeLock:
del connection.objectsNewToMe[self.object.inventoryHash]
except KeyError:
pass
BMProto.stopDownloadingObject(self.object.inventoryHash)
raise e
try:
self.object.checkStream()
except (BMObjectUnwantedStreamError,) as e:
for connection in network.connectionpool.BMConnectionPool().inboundConnections.values() + \
network.connectionpool.BMConnectionPool().outboundConnections.values():
try:
with connection.objectsNewToMeLock:
del connection.objectsNewToMe[self.object.inventoryHash]
except KeyError:
pass
if not BMConfigParser().get("inventory", "acceptmismatch"):
try:
with connection.objectsNewToThemLock:
del connection.objectsNewToThem[self.object.inventoryHash]
except KeyError:
pass
BMProto.stopDownloadingObject(self.object.inventoryHash, BMConfigParser().get("inventory", "acceptmismatch"))
if not BMConfigParser().get("inventory", "acceptmismatch"):
raise e
try:
self.object.checkObjectByType()
objectProcessorQueue.put((self.object.objectType, self.object.data))
except BMObjectInvalidError as e:
BMProto.stopDownloadingObject(self.object.inventoryHash, True)
Inventory()[self.object.inventoryHash] = (
self.object.objectType, self.object.streamNumber, self.payload[objectOffset:], self.object.expiresTime, self.object.tag)
objectProcessorQueue.put((self.object.objectType,self.object.data))
#DownloadQueue().task_done(self.object.inventoryHash)
invQueue.put((self.object.streamNumber, self.object.inventoryHash, self))
#ObjUploadQueue().put(UploadElem(self.object.streamNumber, self.object.inventoryHash))
#broadcastToSendDataQueues((streamNumber, 'advertiseobject', inventoryHash))
return True
def _decode_addr(self):
@ -471,6 +448,22 @@ class BMProto(AdvancedDispatcher, ObjectTracker):
retval += protocol.CreatePacket('addr', payload)
return retval
@staticmethod
def stopDownloadingObject(hashId, forwardAnyway=False):
for connection in network.connectionpool.BMConnectionPool().inboundConnections.values() + \
network.connectionpool.BMConnectionPool().outboundConnections.values():
try:
with connection.objectsNewToMeLock:
del connection.objectsNewToMe[hashId]
except KeyError:
pass
if not forwardAnyway:
try:
with connection.objectsNewToThemLock:
del connection.objectsNewToThem[hashId]
except KeyError:
pass
def handle_close(self, reason=None):
self.set_state("close")
if reason is None:

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@ -44,7 +44,7 @@ class BMConnectionPool(object):
del i.objectsNewToMe[hashid]
except KeyError:
with i.objectsNewToThemLock:
i.objectsNewToThem[hashid] = True
i.objectsNewToThem[hashid] = time.time()
if i == connection:
try:
with i.objectsNewToThemLock:

View File

@ -1,4 +1,5 @@
import threading
import time
import addresses
#from bmconfigparser import BMConfigParser
@ -9,26 +10,38 @@ from network.connectionpool import BMConnectionPool
import protocol
class DownloadThread(threading.Thread, StoppableThread):
maxPending = 500
requestChunk = 1000
maxPending = 50
requestChunk = 100
requestTimeout = 60
cleanInterval = 60
requestExpires = 600
def __init__(self):
threading.Thread.__init__(self, name="DownloadThread")
self.initStop()
self.name = "DownloadThread"
logger.info("init download thread")
self.pending = {}
self.lastCleaned = time.time()
def cleanPending(self):
deadline = time.time() - DownloadThread.requestExpires
self.pending = {k: v for k, v in self.pending.iteritems() if v >= deadline}
self.lastCleaned = time.time()
def run(self):
while not self._stopped:
requested = 0
for i in BMConnectionPool().inboundConnections.values() + BMConnectionPool().outboundConnections.values():
# this may take a while, but it needs a consistency so I think it's better
now = time.time()
timedOut = now - DownloadThread.requestTimeout
# this may take a while, but it needs a consistency so I think it's better to lock a bigger chunk
with i.objectsNewToMeLock:
downloadPending = len(list((k for k, v in i.objectsNewToMe.iteritems() if not v)))
downloadPending = len(list((k for k, v in i.objectsNewToMe.iteritems() if k in self.pending and self.pending[k] > timedOut)))
if downloadPending >= DownloadThread.maxPending:
continue
# keys with True values in the dict
request = list((k for k, v in i.objectsNewToMe.iteritems() if v))
request = list((k for k, v in i.objectsNewToMe.iteritems() if k not in self.pending or self.pending[k] < timedOut))
if not request:
continue
if len(request) > DownloadThread.requestChunk - downloadPending:
@ -36,9 +49,13 @@ class DownloadThread(threading.Thread, StoppableThread):
# mark them as pending
for k in request:
i.objectsNewToMe[k] = False
self.pending[k] = now
payload = addresses.encodeVarint(len(request)) + ''.join(request)
i.writeQueue.put(protocol.CreatePacket('getdata', payload))
logger.debug("%s:%i Requesting %i objects", i.destination.host, i.destination.port, len(request))
requested += len(request)
if time.time() >= self.lastCleaned + DownloadThread.cleanInterval:
self.cleanPending()
if not requested:
self.stop.wait(1)

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@ -28,6 +28,7 @@ class ObjectTracker(object):
invCleanPeriod = 300
invInitialCapacity = 50000
invErrorRate = 0.03
trackingExpires = 3600
def __init__(self):
self.objectsNewToMe = {}
@ -62,9 +63,9 @@ class ObjectTracker(object):
with self.objectsNewToMeLock:
tmp = self.objectsNewToMe.copy()
self.objectsNewToMe = tmp
deadline = time.time() - ObjectTracker.trackingExpires
with self.objectsNewToThemLock:
tmp = self.objectsNewToThem.copy()
self.objectsNewToThem = tmp
self.objectsNewToThem = {k: v for k, v in self.objectsNewToThem.iteritems() if v >= deadline}
self.lastCleaned = time.time()
def hasObj(self, hashid):

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@ -70,7 +70,7 @@ class ReceiveQueueThread(threading.Thread, StoppableThread):
with connection.objectsNewToThemLock:
for objHash in Inventory().unexpired_hashes_by_stream(stream):
bigInvList[objHash] = 0
connection.objectsNewToThem[objHash] = True
connection.objectsNewToThem[objHash] = time.time()
objectCount = 0
payload = b''
# Now let us start appending all of these hashes together. They will be

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@ -25,6 +25,7 @@ maximumNumberOfHalfOpenConnections = 0
invThread = None
addrThread = None
downloadThread = None
ownAddresses = {}