+ """
+ Check the requested topology against the available topology and capacity
+ """
+ def verifyNodeTopo(self, hrn, topo, maxbw):
+ maxbps = get_tc_rate(maxbw)
+ for link in self.nodelinks:
+ if link.bps <= 0:
+ raise GeniInvalidArgument(bw, "BW")
+ if link.bps > maxbps:
+ raise PermissionError(" %s requested %s but max BW is %s" %
+ (hrn, format_tc_rate(link.bps), maxbw))
+
+ n1 = link.end1
+ n2 = link.end2
+ sitelink = self.lookupSiteLink(n1, n2)
+ if not sitelink:
+ raise PermissionError("%s: nodes %s and %s not adjacent" % (hrn, n1.tag, n2.tag))
+ if sitelink.bps < link.bps:
+ raise PermissionError("%s: insufficient capacity between %s and %s" % (hrn, n1.tag, n2.tag))
+
+ """
+ Produce XML directly from the topology specification.
+ """