def createManagerAndView(cacheDir=None, useMemoChannel=False):
viewChannel, managerChannel = SharedStateNative.InMemoryChannelWithoutMemo(callbackScheduler)
storage = None
if cacheDir:
storage = SharedStateNative.Storage.FileStorage(
cacheDir,
10,
.1,
useMemoChannel
)
manager = SharedStateNative.KeyspaceManager(
0,
1,
0x7fffffff,
0x7fffffff,
'',
storage)
manager.add(managerChannel)
view = DummyView(viewChannel)
view.initialize()
return view, manager
def subscribe():
try:
self.asyncView.subscribeToKeyspace(SharedStateNative.getClientInfoKeyspace(), 1, self.onNewClientInfo)
doneDeferred = self.asyncView.subscribeToKeyspace(self.workerStatusKeyspace, 0, self.onNewWorkerStatus)
doneDeferred.addCallbacks(subscribeCallback, lambda exception : None)
except UserWarning as ex:
logging.warn("Failed to subscribe to asyncView keyspace because we disconnected from shared state while reconnecting to shared state")
def KeyspaceManager(randomSeed,
numManagers,
backupInterval=60 * 10,
pingInterval=20,
cachePathOverride=None,
maxOpenFiles=None,
maxLogFileSizeMb=10):
if cachePathOverride is None:
cachePathOverride = Setup.config().sharedStateCache
if maxOpenFiles is None:
import resource
maxOpenFiles = min(
resource.getrlimit(resource.RLIMIT_NOFILE)[0] / 2, 1000)
if cachePathOverride != "":
logging.info(
"Creating FileStorage(cachePathOverride=%s, maxOpenFiles=%s, maxLogFileSizeMb=%s)",
cachePathOverride, maxOpenFiles, maxLogFileSizeMb)
storage = SharedStateNative.Storage.FileStorage(
cachePathOverride, maxOpenFiles, maxLogFileSizeMb)
else:
storage = None
return SharedStateNative.KeyspaceManager(randomSeed, numManagers,
backupInterval, pingInterval,
storage)
def initialize(self):
message = self.getMessage()
self.viewChannel.write(SharedStateNative.MessageRequestSession())
message = self.getMessage().asInitialize
self.clientId = message.clientId
self.masterId = message.masterId
self.generator = message.generator
def createChannel(self, ipEndpoint=None):
assert ipEndpoint is None
viewChannel, managerChannel = SharedStateNative.InMemoryChannel(
self.callbackScheduler)
with self.lock:
self.channelManager.add(managerChannel)
self.channels.append(managerChannel)
return viewChannel
def test_simple_manager(self):
view = createViewWithNoChannel()
before = TCMalloc.getBytesUsed()
keyspace = SharedState.Keyspace("TakeHighestIdKeyType", json('test'), 1)
cache = SharedStateNative.KeyspaceManager(0, 1, 0x7fffffff, 0x7fffffff, None)
for event in producePartialEvents(view, [keyspace], 'test', 1024 * 32, 1, 8):
cache.addEvent(event)
view = None
gc.collect()
bytesUsed = TCMalloc.getBytesUsed() - before
self.assertTrue(bytesUsed < 1024 * 128)
def __init__(self, callbackScheduler, filterFun):
self.filterFun = filterFun
self.callbackScheduler = callbackScheduler
self.viewFacingViewChannel, self.filterFacingManagerChannel = SharedStateNative.InMemoryChannel(
self.callbackScheduler)
self.filterFacingViewChannel, self.managerFacingManagerChannel = SharedStateNative.InMemoryChannel(
self.callbackScheduler)
self.stopFlag = threading.Event()
self.channelPumpThreads = []
self.channelPumpThreads.append(
ManagedThread.ManagedThread(target=self.filteredChannelPump,
args=(self.filterFacingManagerChannel,
self.filterFacingViewChannel)))
self.channelPumpThreads.append(
ManagedThread.ManagedThread(
target=self.filteredChannelPump,
args=(self.filterFacingViewChannel,
self.filterFacingManagerChannel)))
for thread in self.channelPumpThreads:
thread.start()
def test_keyspace_cache(self):
numKeys = 1024 * 256
before = TCMalloc.getBytesUsed()
view = createViewWithNoChannel()
keyspace = SharedState.Keyspace("ComparisonKeyType", json('test'), 1)
keyrange = SharedState.KeyRange(keyspace, 0, None, None, True, True)
cache = SharedStateNative.KeyspaceCache(keyrange, None)
for event in producePartialEvents(view, [keyspace], 'test', numKeys, 1, 8):
cache.addEvent(event)
cache.newMinimumId(numKeys)
view = None
gc.collect()
bytesUsed = TCMalloc.getBytesUsed() - before
self.assertTrue(bytesUsed < 1024 * 16)
def connectedClientInfo(view):
"""given a view subscribed to the client info keyspace, computes all the connected
clients"""
clientInfoKeyspace = SharedStateNative.getClientInfoKeyspace()
k = view.nextKey(Key(clientInfoKeyspace, (NativeJson.lowestValue(), NativeJson.lowestValue())))
maxId = 0
tr = set()
while k is not None:
if k.keyspace != clientInfoKeyspace.name:
return tr, maxId
if view[k].value() != NativeJson.Json('disconnected'):
tr.add(k[1])
maxId = max(maxId, view[k].id())
k = view.nextKey(k)
return tr, maxId
def test_null_value_is_deleted(self):
numEvents = 1024 * 64
valueSize = 128
numKeys = numEvents
view = createViewWithNoChannel()
keyspace = SharedState.Keyspace("ComparisonKeyType", json('test'), 1)
keyrange = SharedState.KeyRange(keyspace, 0, None, None, True, True)
cache = SharedStateNative.KeyspaceCache(keyrange, None)
gc.collect()
m0 = TCMalloc.getBytesUsed()
for event in producePartialEvents(view, [keyspace], 'test', numKeys, numKeys, valueSize):
cache.addEvent(event)
cache.addEvent(produceNullifyingEvent(view, event))
cache.newMinimumId(numKeys * 2)
gc.collect()
self.assertLess(TCMalloc.getBytesUsed() - m0, 1024 * 4)
def connectedClientInfo(view):
"""given a view subscribed to the client info keyspace, computes all the connected
clients"""
clientInfoKeyspace = SharedStateNative.getClientInfoKeyspace()
k = view.nextKey(
Key(clientInfoKeyspace,
(NativeJson.lowestValue(), NativeJson.lowestValue())))
maxId = 0
tr = set()
while k is not None:
if k.keyspace != clientInfoKeyspace.name:
return tr, maxId
if view[k].value() != NativeJson.Json('disconnected'):
tr.add(k[1])
maxId = max(maxId, view[k].id())
k = view.nextKey(k)
return tr, maxId
def test_channel_wrappers(self):
viewChannel, managerChannel = SharedStateNative.InMemoryChannel(
callbackScheduler)
message = SharedState.MessageOut.MinimumIdResponse(0)
viewChannel.write(message)
managerChannel.get()
def createServerSocketChannel(callbackScheduler, sock):
allSockets_.append(sock)
return SharedStateNative.ServerSocketChannel(callbackScheduler,
sock.fileno())
def createClientSocketMessageChannel(callbackScheduler, sock):
allSockets_.append(sock)
return SharedStateNative.ClientSocketMessageChannel(
callbackScheduler, sock.fileno())
def Listener(view):
"""Create a new PySharedStateListener subscribed to 'view' and return it."""
listener = SharedStateNative.Listener()
listener.listenToView(view)
return listener
def updateActiveMachines(self):
if self.shouldStop():
return
if self._lastDisconnectTime is not None:
if self._lastReconnectTime is None:
return
if time.time() - self._lastReconnectTime < TIME_TO_SLEEP_AFTER_RECONNECT:
#we need to defer until later
return
logging.debug('%s attempting to get introspection information', self.clientID)
try:
introspectionInfo = self.asyncView.keyspaceItems(SharedStateNative.getClientInfoKeyspace())
except UserWarning:
logging.info('AsyncView received exception from View:\n%s', traceback.format_exc())
self.setDisconnected()
raise
currentlyConnectedClientIds = set([key[1].toSimple() for key, value in introspectionInfo if value.toSimple() != 'disconnected'])
currentlyConnectedWorkers = set()
for clientId in currentlyConnectedClientIds:
machineId = self.clientIdToMachineIdAsString(clientId)
if machineId:
currentlyConnectedWorkers.add(machineId)
logging.debug('%s currently connected list is %s', self.ownMachineIdAsString, currentlyConnectedWorkers)
with self._lock:
for deadWorker in self.activeMachineIds - currentlyConnectedWorkers:
if deadWorker != self.ownMachineIdAsString():
logging.info("Worker dropped: %s which is not our ID (%s)", deadWorker, self.ownMachineIdAsString())
self.activeMachineIds.remove(deadWorker)
if deadWorker not in self.machineIdToClientId:
logging.critical("Worker %s is dead, but I don't have a client id for it.", deadWorker)
assert False
else:
deadClientID = self.machineIdToClientId[deadWorker]
self.onWorkerDrop(deadClientID, *self.clientIdToIpPortAndMachineIdAsString[deadClientID])
newlyAliveClientIds = []
with self._lock:
for newlyAliveClientId in set(self.clientIdToIpPortAndMachineIdAsString.keys()).intersection(currentlyConnectedClientIds):
nowAliveMachineId = self.clientIdToMachineIdAsString(newlyAliveClientId)
if nowAliveMachineId is not None and nowAliveMachineId not in self.activeMachineIds:
logging.info(
"Worker clientId=%s added with IP %s and ports %s, machineIdAsString=%s",
nowAliveMachineId,
*self.clientIdToIpPortAndMachineIdAsString[newlyAliveClientId]
)
self.activeMachineIds.add(nowAliveMachineId)
# Defer onWorkerAdd notifications.
newlyAliveClientIds.append(newlyAliveClientId)
logging.debug("Active workers: %s", self.activeMachineIds)
for newlyAliveClientId in newlyAliveClientIds:
self.onWorkerAdd(newlyAliveClientId, *self.clientIdToIpPortAndMachineIdAsString[newlyAliveClientId])
def createView_(self, friendlyName):
view = SharedStateNative.createView(self.enableDebugPrint)
channel = self.channelFactory.createChannel()
view.add(channel)
return view
def createView_(self, friendlyName):
view = SharedStateNative.createView(self.enableDebugPrint)
channel = self.channelFactory.createChannel()
view.add(channel)
return view
def updateActiveMachines(self):
if self.shouldStop():
return
if self._lastDisconnectTime is not None:
if self._lastReconnectTime is None:
return
if time.time(
) - self._lastReconnectTime < TIME_TO_SLEEP_AFTER_RECONNECT:
#we need to defer until later
return
logging.debug('%s attempting to get introspection information',
self.clientID)
try:
introspectionInfo = self.asyncView.keyspaceItems(
SharedStateNative.getClientInfoKeyspace())
except UserWarning:
logging.info('AsyncView received exception from View:\n%s',
traceback.format_exc())
self.setDisconnected()
raise
currentlyConnectedClientIds = set([
key[1].toSimple() for key, value in introspectionInfo
if value.toSimple() != 'disconnected'
])
currentlyConnectedWorkers = set()
for clientId in currentlyConnectedClientIds:
machineId = self.clientIdToMachineIdAsString(clientId)
if machineId:
currentlyConnectedWorkers.add(machineId)
logging.debug('%s currently connected list is %s',
self.ownMachineIdAsString, currentlyConnectedWorkers)
with self._lock:
for deadWorker in self.activeMachineIds - currentlyConnectedWorkers:
if deadWorker != self.ownMachineIdAsString():
logging.info("Worker dropped: %s which is not our ID (%s)",
deadWorker, self.ownMachineIdAsString())
self.activeMachineIds.remove(deadWorker)
if deadWorker not in self.machineIdToClientId:
logging.critical(
"Worker %s is dead, but I don't have a client id for it.",
deadWorker)
assert False
else:
deadClientID = self.machineIdToClientId[deadWorker]
self.onWorkerDrop(
deadClientID, *self.
clientIdToIpPortAndMachineIdAsString[deadClientID])
newlyAliveClientIds = []
with self._lock:
for newlyAliveClientId in set(
self.clientIdToIpPortAndMachineIdAsString.keys(
)).intersection(currentlyConnectedClientIds):
nowAliveMachineId = self.clientIdToMachineIdAsString(
newlyAliveClientId)
if nowAliveMachineId is not None and nowAliveMachineId not in self.activeMachineIds:
logging.debug(
"Worker clientId=%s added with IP %s and ports %s, machineIdAsString=%s",
nowAliveMachineId,
*self.clientIdToIpPortAndMachineIdAsString[
newlyAliveClientId])
self.activeMachineIds.add(nowAliveMachineId)
# Defer onWorkerAdd notifications.
newlyAliveClientIds.append(newlyAliveClientId)
logging.debug("Active workers: %s", self.activeMachineIds)
for newlyAliveClientId in newlyAliveClientIds:
self.onWorkerAdd(
newlyAliveClientId,
*self.clientIdToIpPortAndMachineIdAsString[newlyAliveClientId])
