def addExcludedMac(self,macStr,comment=""):
'''
Add an MAC to the exclusion list
'''
with MutexStore.getObjectLock(self.getLockIdentifier()):
#Check is not already allocated
if not self.__isMacAvailable(macStr):
raise Exception("Mac already allocated or marked as excluded")
#then forbidd
if not EthernetUtils.isMacInRange(macStr,self.startMac,self.endMac):
raise Exception("Mac is not in range")
newMac = MacSlot.excludedMacFactory(self,macStr,comment)
self.macs.add(newMac)
#if was nextSlot shift
if self.nextAvailableMac == macStr:
try:
it= EthernetUtils.getMacIterator(self.nextAvailableMac,self.endMac)
while True:
mac = it.getNextMac()
if self.__isMacAvailable(mac):
break
self.nextAvailableMac= mac
except Exception as e:
self.nextAvailableMac = None
self.autoSave()
def removeExcludedMac(self,macObj):
'''
Deletes an Mac from the exclusion list (but it does not destroy the object!!)
'''
with MutexStore.getObjectLock(self.getLockIdentifier()):
macStr = macObj.getMac()
if (not self.macs.get(mac=macStr).isExcludedMac()):
raise Exception("Cannot release Mac. Reason may be is unallocated or is not excluded Mac")
self.macs.remove(macObj)
#Determine new available Mac
if not self.nextAvailableMac == None:
if EthernetUtils.compareMacs(macStr,self.nextAvailableMac) > 0:
#Do nothing
pass
else:
self.nextAvailableMac = macStr
else:
#No more gaps
self.nextAvailableMac = macStr
self.autoSave()
def allocateMac(self):
'''
Allocates an MAC address of the range
'''
with MutexStore.getObjectLock(self.getLockIdentifier()):
#Implements first fit algorithm
if self.nextAvailableMac == None:
raise Exception("Could not allocate any Mac")
newMac = MacSlot.macFactory(self,self.nextAvailableMac)
self.macs.add(newMac)
#Try to find new slot
try:
it= EthernetUtils.getMacIterator(self.nextAvailableMac,self.endMac)
while True:
mac = it.getNextMac()
if self.__isMacAvailable(mac):
break
self.nextAvailableMac = mac
except Exception as e:
self.nextAvailableMac = None
self.autoSave()
return newMac
def constructor(macRange,mac,excluded,comment="",save=True): self = MacSlot() #Check MAC if not mac == "": EthernetUtils.checkValidMac(mac) self.mac = mac self.isExcluded = excluded self.macRange = macRange self.comment = comment self.doSave = save if save: self.save() return self
def constructor(name,startMac,endMac,isGlobal=True,save=True): self = MacRange() try: #Default constructor EthernetUtils.checkValidMac(startMac) EthernetUtils.checkValidMac(endMac) self.startMac = startMac.upper() self.endMac = endMac.upper() self.name = name self.isGlobal= isGlobal #Create an iterator it= EthernetUtils.getMacIterator(self.startMac,self.endMac) self.nextAvailableMac = it.getNextMac() #Number of Slots try: self.numberOfSlots = EthernetUtils.getNumberOfSlotsInRange(startMac,endMac) except Exception as e: print "Exception doing slot calculation"+str(e) self.numberOfSlots = -1 self.doSave = save if save: self.save() except Exception as e: print e raise e return self
def rebasePointer(self): '''Used when pointer has lost track mostly due to bug #''' with MutexStore.getObjectLock(self.getLockIdentifier()): print "Rebasing pointer of range: "+str(self.id) print "Current pointer point to: "+self.nextAvailableMac try: it= EthernetUtils.getMacIterator(self.startMac,self.endMac) while True: mac = it.getNextMac() if self.__isMacAvailable(mac): break self.nextAvailableMac= mac except Exception as e: self.nextAvailableMac = None print "Pointer will be rebased to: "+self.nextAvailableMac self.save()
def releaseMac(self,macObj):
'''
Releases an MAC address of the range (but it does not destroy the object!!)
'''
with MutexStore.getObjectLock(self.getLockIdentifier()):
macStr = macObj.getMac()
if not self.macs.filter(mac=macStr).count() > 0:
raise Exception("Cannot release Mac %s. Reason may be is unallocated or is an excluded Mac",macStr)
self.macs.remove(macObj)
#Determine new available Mac
if not self.nextAvailableMac == None:
if EthernetUtils.compareMacs(macStr,self.nextAvailableMac) > 0:
#Do nothing
pass
else:
self.nextAvailableMac = macStr
else:
#No more gaps
self.nextAvailableMac = macStr
self.autoSave()
def __setEndMac(self, value): EthernetUtils.checkValidMac(value) self.endMac = value.upper() self.autoSave()
def __setStartMac(self, value): EthernetUtils.checkValidMac(value) #MAC4Utils.checkValidMac(value) self.startMac = value.upper() self.autoSave()
