def allocateIP()

in src/tashi/agents/dhcpdns.py [0:0]

• 22 lines of code
• 6 McCabe index (conditional complexity)

	def allocateIP(self, nic):
		# XXXstroucki: if the network is not defined having an ip
		# range, this will throw a KeyError. Should be logged.
		network = nic.network
		allocatedIP = None
		requestedIP = self.strToIp(nic.ip)
		wrapToMinAlready = False
		if (requestedIP <= self.ipMax[network] and
			requestedIP >= self.ipMin[network] and
			(requestedIP not in self.usedIPs)):

			allocatedIP = requestedIP

		# nic.ip will be updated later in preCreate if chosen
		# ip not available
		while (allocatedIP == None):
			if (self.currentIP[network] > self.ipMax[network] and wrapToMinAlready):
				raise UserWarning("No available IP addresses for network %d" % (network))
			if (self.currentIP[network] > self.ipMax[network]):
				self.currentIP[network] = self.ipMin[network]
				wrapToMinAlready = True
			elif (self.currentIP[network] in self.usedIPs):
				self.currentIP[network] = self.currentIP[network] + 1
			else:
				allocatedIP = self.currentIP[network]
		ipString = self.ipToStr(allocatedIP)
		self.usedIPs[allocatedIP] = ipString
		return ipString