mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-25 20:52:26 -06:00
604 lines
24 KiB
Python
Executable file
604 lines
24 KiB
Python
Executable file
from pandac.PandaModules import *
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from MsgTypes import *
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from direct.task import Task
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from direct.directnotify import DirectNotifyGlobal
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import CRCache
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from direct.distributed.CRDataCache import CRDataCache
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from direct.distributed.ConnectionRepository import ConnectionRepository
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from direct.showbase import PythonUtil
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import ParentMgr
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import RelatedObjectMgr
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import time
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from ClockDelta import *
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from PyDatagram import PyDatagram
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from PyDatagramIterator import PyDatagramIterator
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import types
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class ClientRepositoryBase(ConnectionRepository):
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"""
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This maintains a client-side connection with a Panda server.
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This base class exists to collect the common code between
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ClientRepository, which is the CMU-provided, open-source version
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of the client repository code, and OTPClientRepository, which is
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the VR Studio's implementation of the same.
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"""
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notify = DirectNotifyGlobal.directNotify.newCategory("ClientRepositoryBase")
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def __init__(self, dcFileNames = None, dcSuffix = '',
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connectMethod = None, threadedNet = None):
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if connectMethod is None:
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connectMethod = self.CM_HTTP
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ConnectionRepository.__init__(self, connectMethod, base.config, hasOwnerView = True, threadedNet = threadedNet)
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self.dcSuffix = dcSuffix
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if hasattr(self, 'setVerbose'):
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if self.config.GetBool('verbose-clientrepository'):
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self.setVerbose(1)
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self.context=100000
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self.setClientDatagram(1)
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self.deferredGenerates = []
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self.deferredDoIds = {}
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self.lastGenerate = 0
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self.setDeferInterval(base.config.GetDouble('deferred-generate-interval', 0.2))
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self.noDefer = False # Set this True to temporarily disable deferring.
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self.recorder = base.recorder
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self.readDCFile(dcFileNames)
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self.cache=CRCache.CRCache()
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self.doDataCache = CRDataCache()
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self.cacheOwner=CRCache.CRCache()
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self.serverDelta = 0
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self.bootedIndex = None
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self.bootedText = None
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# create a parentMgr to handle distributed reparents
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# this used to be 'token2nodePath'
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self.parentMgr = ParentMgr.ParentMgr()
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# The RelatedObjectMgr helps distributed objects find each
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# other.
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self.relatedObjectMgr = RelatedObjectMgr.RelatedObjectMgr(self)
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# This will be filled in when a TimeManager is created.
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self.timeManager = None
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# Keep track of how recently we last sent a heartbeat message.
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# We want to keep these coming at heartbeatInterval seconds.
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self.heartbeatInterval = base.config.GetDouble('heartbeat-interval', 10)
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self.heartbeatStarted = 0
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self.lastHeartbeat = 0
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self._delayDeletedDOs = {}
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self.specialNameNumber = 0
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def setDeferInterval(self, deferInterval):
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"""Specifies the minimum amount of time, in seconds, that must
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elapse before generating any two DistributedObjects whose
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class type is marked "deferrable". Set this to 0 to indicate
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no deferring will occur."""
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self.deferInterval = deferInterval
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self.setHandleCUpdates(self.deferInterval == 0)
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if self.deferredGenerates:
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taskMgr.remove('deferredGenerate')
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taskMgr.doMethodLater(self.deferInterval, self.doDeferredGenerate, 'deferredGenerate')
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## def queryObjectAll(self, doID, context=0):
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## """
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## Get a one-time snapshot look at the object.
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## """
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## assert self.notify.debugStateCall(self)
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## # Create a message
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## datagram = PyDatagram()
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## datagram.addServerHeader(
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## doID, localAvatar.getDoId(), 2020)
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## # A context that can be used to index the response if needed
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## datagram.addUint32(context)
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## self.send(datagram)
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## # Make sure the message gets there.
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## self.flush()
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def specialName(self, label):
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name = ("SpecialName %s %s" % (self.specialNameNumber, label))
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self.specialNameNumber += 1
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return name
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def getTables(self, ownerView):
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if ownerView:
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return self.doId2ownerView, self.cacheOwner
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else:
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return self.doId2do, self.cache
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def _getMsgName(self, msgId):
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# we might get a list of message names, use the first one
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return makeList(MsgId2Names.get(msgId, 'UNKNOWN MESSAGE: %s' % msgId))[0]
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def allocateContext(self):
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self.context+=1
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return self.context
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def setServerDelta(self, delta):
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"""
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Indicates the approximate difference in seconds between the
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client's clock and the server's clock, in universal time (not
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including timezone shifts). This is mainly useful for
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reporting synchronization information to the logs; don't
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depend on it for any precise timing requirements.
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Also see Notify.setServerDelta(), which also accounts for a
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timezone shift.
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"""
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self.serverDelta = delta
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def getServerDelta(self):
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return self.serverDelta
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def getServerTimeOfDay(self):
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"""
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Returns the current time of day (seconds elapsed since the
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1972 epoch) according to the server's clock. This is in GMT,
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and hence is irrespective of timezones.
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The value is computed based on the client's clock and the
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known delta from the server's clock, which is not terribly
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precisely measured and may drift slightly after startup, but
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it should be accurate plus or minus a couple of seconds.
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"""
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return time.time() + self.serverDelta
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def doGenerate(self, parentId, zoneId, classId, doId, di):
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# Look up the dclass
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assert parentId == self.GameGlobalsId or parentId in self.doId2do
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dclass = self.dclassesByNumber[classId]
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assert(self.notify.debug("performing generate for %s %s" % (dclass.getName(), doId)))
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dclass.startGenerate()
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# Create a new distributed object, and put it in the dictionary
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distObj = self.generateWithRequiredOtherFields(dclass, doId, di, parentId, zoneId)
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dclass.stopGenerate()
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def flushGenerates(self):
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""" Forces all pending generates to be performed immediately. """
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while self.deferredGenerates:
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msgType, extra = self.deferredGenerates[0]
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del self.deferredGenerates[0]
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self.replayDeferredGenerate(msgType, extra)
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taskMgr.remove('deferredGenerate')
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def replayDeferredGenerate(self, msgType, extra):
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""" Override this to do something appropriate with deferred
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"generate" messages when they are replayed().
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"""
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if msgType == CLIENT_CREATE_OBJECT_REQUIRED_OTHER:
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# It's a generate message.
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doId = extra
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if doId in self.deferredDoIds:
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args, deferrable, dg, updates = self.deferredDoIds[doId]
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del self.deferredDoIds[doId]
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self.doGenerate(*args)
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if deferrable:
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self.lastGenerate = globalClock.getFrameTime()
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for dg, di in updates:
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# non-DC updates that need to be played back in-order are
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# stored as (msgType, (dg, di))
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if type(di) is types.TupleType:
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msgType = dg
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dg, di = di
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self.replayDeferredGenerate(msgType, (dg, di))
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else:
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# ovUpdated is set to True since its OV
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# is assumbed to have occured when the
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# deferred update was originally received
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self.__doUpdate(doId, di, True)
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else:
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self.notify.warning("Ignoring deferred message %s" % (msgType))
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def doDeferredGenerate(self, task):
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""" This is the task that generates an object on the deferred
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queue. """
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now = globalClock.getFrameTime()
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while self.deferredGenerates:
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if now - self.lastGenerate < self.deferInterval:
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# Come back later.
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return Task.again
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# Generate the next deferred object.
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msgType, extra = self.deferredGenerates[0]
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del self.deferredGenerates[0]
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self.replayDeferredGenerate(msgType, extra)
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# All objects are generaetd.
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return Task.done
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def generateWithRequiredFields(self, dclass, doId, di, parentId, zoneId):
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if doId in self.doId2do:
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# ...it is in our dictionary.
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# Just update it.
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distObj = self.doId2do[doId]
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assert distObj.dclass == dclass
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distObj.generate()
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distObj.setLocation(parentId, zoneId)
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distObj.updateRequiredFields(dclass, di)
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# updateRequiredFields calls announceGenerate
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elif self.cache.contains(doId):
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# ...it is in the cache.
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# Pull it out of the cache:
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distObj = self.cache.retrieve(doId)
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assert distObj.dclass == dclass
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# put it in the dictionary:
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self.doId2do[doId] = distObj
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# and update it.
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distObj.generate()
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# make sure we don't have a stale location
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distObj.parentId = None
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distObj.zoneId = None
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distObj.setLocation(parentId, zoneId)
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distObj.updateRequiredFields(dclass, di)
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# updateRequiredFields calls announceGenerate
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else:
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# ...it is not in the dictionary or the cache.
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# Construct a new one
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classDef = dclass.getClassDef()
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if classDef == None:
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self.notify.error("Could not create an undefined %s object." % (dclass.getName()))
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distObj = classDef(self)
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distObj.dclass = dclass
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# Assign it an Id
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distObj.doId = doId
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# Put the new do in the dictionary
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self.doId2do[doId] = distObj
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# Update the required fields
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distObj.generateInit() # Only called when constructed
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distObj._retrieveCachedData()
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distObj.generate()
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distObj.setLocation(parentId, zoneId)
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distObj.updateRequiredFields(dclass, di)
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# updateRequiredFields calls announceGenerate
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self.notify.debug("New DO:%s, dclass:%s" % (doId, dclass.getName()))
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return distObj
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def generateWithRequiredOtherFields(self, dclass, doId, di,
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parentId = None, zoneId = None):
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if doId in self.doId2do:
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# ...it is in our dictionary.
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# Just update it.
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distObj = self.doId2do[doId]
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assert distObj.dclass == dclass
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distObj.generate()
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distObj.setLocation(parentId, zoneId)
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distObj.updateRequiredOtherFields(dclass, di)
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# updateRequiredOtherFields calls announceGenerate
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elif self.cache.contains(doId):
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# ...it is in the cache.
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# Pull it out of the cache:
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distObj = self.cache.retrieve(doId)
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assert distObj.dclass == dclass
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# put it in the dictionary:
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self.doId2do[doId] = distObj
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# and update it.
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distObj.generate()
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# make sure we don't have a stale location
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distObj.parentId = None
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distObj.zoneId = None
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distObj.setLocation(parentId, zoneId)
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distObj.updateRequiredOtherFields(dclass, di)
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# updateRequiredOtherFields calls announceGenerate
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else:
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# ...it is not in the dictionary or the cache.
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# Construct a new one
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classDef = dclass.getClassDef()
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if classDef == None:
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self.notify.error("Could not create an undefined %s object." % (dclass.getName()))
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distObj = classDef(self)
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distObj.dclass = dclass
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# Assign it an Id
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distObj.doId = doId
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# Put the new do in the dictionary
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self.doId2do[doId] = distObj
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# Update the required fields
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distObj.generateInit() # Only called when constructed
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distObj._retrieveCachedData()
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distObj.generate()
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distObj.setLocation(parentId, zoneId)
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distObj.updateRequiredOtherFields(dclass, di)
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# updateRequiredOtherFields calls announceGenerate
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return distObj
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def generateWithRequiredOtherFieldsOwner(self, dclass, doId, di):
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if doId in self.doId2ownerView:
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# ...it is in our dictionary.
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# Just update it.
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self.notify.error('duplicate owner generate for %s (%s)' % (
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doId, dclass.getName()))
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distObj = self.doId2ownerView[doId]
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assert distObj.dclass == dclass
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distObj.generate()
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distObj.updateRequiredOtherFields(dclass, di)
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# updateRequiredOtherFields calls announceGenerate
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elif self.cacheOwner.contains(doId):
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# ...it is in the cache.
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# Pull it out of the cache:
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distObj = self.cacheOwner.retrieve(doId)
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assert distObj.dclass == dclass
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# put it in the dictionary:
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self.doId2ownerView[doId] = distObj
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# and update it.
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distObj.generate()
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distObj.updateRequiredOtherFields(dclass, di)
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# updateRequiredOtherFields calls announceGenerate
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else:
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# ...it is not in the dictionary or the cache.
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# Construct a new one
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classDef = dclass.getOwnerClassDef()
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if classDef == None:
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self.notify.error("Could not create an undefined %s object. Have you created an owner view?" % (dclass.getName()))
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distObj = classDef(self)
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distObj.dclass = dclass
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# Assign it an Id
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distObj.doId = doId
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# Put the new do in the dictionary
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self.doId2ownerView[doId] = distObj
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# Update the required fields
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distObj.generateInit() # Only called when constructed
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distObj.generate()
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distObj.updateRequiredOtherFields(dclass, di)
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# updateRequiredOtherFields calls announceGenerate
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return distObj
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def disableDoId(self, doId, ownerView=False):
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table, cache = self.getTables(ownerView)
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# Make sure the object exists
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if doId in table:
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# Look up the object
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distObj = table[doId]
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# remove the object from the dictionary
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del table[doId]
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# Only cache the object if it is a "cacheable" type
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# object; this way we don't clutter up the caches with
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# trivial objects that don't benefit from caching.
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# also don't try to cache an object that is delayDeleted
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cached = False
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if distObj.getCacheable() and distObj.getDelayDeleteCount() <= 0:
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cached = cache.cache(distObj)
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if not cached:
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distObj.deleteOrDelay()
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if distObj.getDelayDeleteCount() <= 0:
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# make sure we're not leaking
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distObj.detectLeaks()
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elif doId in self.deferredDoIds:
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# The object had been deferred. Great; we don't even have
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# to generate it now.
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del self.deferredDoIds[doId]
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i = self.deferredGenerates.index((CLIENT_CREATE_OBJECT_REQUIRED_OTHER, doId))
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del self.deferredGenerates[i]
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if len(self.deferredGenerates) == 0:
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taskMgr.remove('deferredGenerate')
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else:
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self._logFailedDisable(doId, ownerView)
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def _logFailedDisable(self, doId, ownerView):
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self.notify.warning(
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"Disable failed. DistObj "
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+ str(doId) +
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" is not in dictionary, ownerView=%s" % ownerView)
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def handleDelete(self, di):
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# overridden by ClientRepository
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assert 0
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def handleUpdateField(self, di):
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"""
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This method is called when a CLIENT_OBJECT_UPDATE_FIELD
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message is received; it decodes the update, unpacks the
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arguments, and calls the corresponding method on the indicated
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DistributedObject.
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In fact, this method is exactly duplicated by the C++ method
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cConnectionRepository::handle_update_field(), which was
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written to optimize the message loop by handling all of the
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CLIENT_OBJECT_UPDATE_FIELD messages in C++. That means that
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nowadays, this Python method will probably never be called,
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since UPDATE_FIELD messages will not even be passed to the
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Python message handlers. But this method remains for
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documentation purposes, and also as a "just in case" handler
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in case we ever do come across a situation in the future in
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which python might handle the UPDATE_FIELD message.
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"""
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# Get the DO Id
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doId = di.getUint32()
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ovUpdated = self.__doUpdateOwner(doId, di)
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if doId in self.deferredDoIds:
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# This object hasn't really been generated yet. Sit on
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# the update.
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args, deferrable, dg0, updates = self.deferredDoIds[doId]
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# Keep a copy of the datagram, and move the di to the copy
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dg = Datagram(di.getDatagram())
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di = DatagramIterator(dg, di.getCurrentIndex())
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updates.append((dg, di))
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else:
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# This object has been fully generated. It's OK to update.
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self.__doUpdate(doId, di, ovUpdated)
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def __doUpdate(self, doId, di, ovUpdated):
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# Find the DO
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do = self.doId2do.get(doId)
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if do is not None:
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# Let the dclass finish the job
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do.dclass.receiveUpdate(do, di)
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elif not ovUpdated:
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# this next bit is looking for avatar handles so that if you get an update
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# for an avatar that isn't in your doId2do table but there is a
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# avatar handle for that object then it's messages will be forwarded to that
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# object. We are currently using that for whisper echoing
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# if you need a more general perpose system consider registering proxy objects on
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# a dict and adding the avatar handles to that dict when they are created
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# then change/remove the old method. I didn't do that because I couldn't think
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# of a use for it. -JML
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try :
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handle = self.identifyAvatar(doId)
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if handle:
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dclass = self.dclassesByName[handle.dclassName]
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dclass.receiveUpdate(handle, di)
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else:
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self.notify.warning(
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"Asked to update non-existent DistObj " + str(doId))
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except:
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self.notify.warning(
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"Asked to update non-existent DistObj " + str(doId) + "and failed to find it")
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def __doUpdateOwner(self, doId, di):
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ovObj = self.doId2ownerView.get(doId)
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if ovObj:
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odg = Datagram(di.getDatagram())
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odi = DatagramIterator(odg, di.getCurrentIndex())
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ovObj.dclass.receiveUpdate(ovObj, odi)
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return True
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return False
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def handleGoGetLost(self, di):
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# The server told us it's about to drop the connection on us.
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# Get ready!
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if (di.getRemainingSize() > 0):
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self.bootedIndex = di.getUint16()
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self.bootedText = di.getString()
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self.notify.warning(
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"Server is booting us out (%d): %s" % (self.bootedIndex, self.bootedText))
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else:
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self.bootedIndex = None
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self.bootedText = None
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self.notify.warning(
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"Server is booting us out with no explanation.")
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# disconnect now, don't wait for send/recv to fail
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self.stopReaderPollTask()
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self.lostConnection()
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def handleServerHeartbeat(self, di):
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# Got a heartbeat message from the server.
|
|
if base.config.GetBool('server-heartbeat-info', 1):
|
|
self.notify.info("Server heartbeat.")
|
|
|
|
def handleSystemMessage(self, di):
|
|
# Got a system message from the server.
|
|
message = di.getString()
|
|
self.notify.info('Message from server: %s' % (message))
|
|
return message
|
|
|
|
def handleSystemMessageAknowledge(self, di):
|
|
# Got a system message from the server.
|
|
message = di.getString()
|
|
self.notify.info('Message with aknowledge from server: %s' % (message))
|
|
messenger.send("system message aknowledge", [message])
|
|
return message
|
|
|
|
def getObjectsOfClass(self, objClass):
|
|
""" returns dict of doId:object, containing all objects
|
|
that inherit from 'class'. returned dict is safely mutable. """
|
|
doDict = {}
|
|
for doId, do in self.doId2do.items():
|
|
if isinstance(do, objClass):
|
|
doDict[doId] = do
|
|
return doDict
|
|
|
|
def getObjectsOfExactClass(self, objClass):
|
|
""" returns dict of doId:object, containing all objects that
|
|
are exactly of type 'class' (neglecting inheritance). returned
|
|
dict is safely mutable. """
|
|
doDict = {}
|
|
for doId, do in self.doId2do.items():
|
|
if do.__class__ == objClass:
|
|
doDict[doId] = do
|
|
return doDict
|
|
|
|
|
|
def considerHeartbeat(self):
|
|
"""Send a heartbeat message if we haven't sent one recently."""
|
|
if not self.heartbeatStarted:
|
|
self.notify.debug("Heartbeats not started; not sending.")
|
|
return
|
|
|
|
elapsed = globalClock.getRealTime() - self.lastHeartbeat
|
|
if elapsed < 0 or elapsed > self.heartbeatInterval:
|
|
# It's time to send the heartbeat again (or maybe someone
|
|
# reset the clock back).
|
|
self.notify.info("Sending heartbeat mid-frame.")
|
|
self.startHeartbeat()
|
|
|
|
def stopHeartbeat(self):
|
|
taskMgr.remove("heartBeat")
|
|
self.heartbeatStarted = 0
|
|
|
|
def startHeartbeat(self):
|
|
self.stopHeartbeat()
|
|
self.heartbeatStarted = 1
|
|
self.sendHeartbeat()
|
|
self.waitForNextHeartBeat()
|
|
|
|
def sendHeartbeatTask(self, task):
|
|
self.sendHeartbeat()
|
|
return Task.again
|
|
|
|
def waitForNextHeartBeat(self):
|
|
taskMgr.doMethodLater(self.heartbeatInterval, self.sendHeartbeatTask,
|
|
"heartBeat", taskChain = 'net')
|
|
|
|
def replaceMethod(self, oldMethod, newFunction):
|
|
return 0
|
|
|
|
def getWorld(self, doId):
|
|
# Get the world node for this object
|
|
obj = self.doId2do[doId]
|
|
|
|
worldNP = obj.getParent()
|
|
while 1:
|
|
nextNP = worldNP.getParent()
|
|
if nextNP == render:
|
|
break
|
|
elif worldNP.isEmpty():
|
|
return None
|
|
return worldNP
|
|
|
|
def isLocalId(self, id):
|
|
# By default, no ID's are local. See also
|
|
# ClientRepository.isLocalId().
|
|
return 0
|
|
|
|
# methods for tracking delaydeletes
|
|
def _addDelayDeletedDO(self, do):
|
|
# use the id of the object, it's possible to have multiple DelayDeleted instances
|
|
# with identical doIds if an object gets deleted then re-generated
|
|
key = id(do)
|
|
assert key not in self._delayDeletedDOs
|
|
self._delayDeletedDOs[key] = do
|
|
|
|
def _removeDelayDeletedDO(self, do):
|
|
key = id(do)
|
|
del self._delayDeletedDOs[key]
|
|
|
|
def printDelayDeletes(self):
|
|
print 'DelayDeletes:'
|
|
print '============='
|
|
for obj in self._delayDeletedDOs.itervalues():
|
|
print '%s\t%s (%s)\tdelayDeletes=%s' % (
|
|
obj.doId, safeRepr(obj), itype(obj), obj.getDelayDeleteNames())
|