return topo.toxml(hrn)
-"""
-Check the requested topology against the available topology and capacity
-"""
-def check_request(hrn, rspec, nodes, sites, sitelinks, maxbw):
- linkspecs = rspec['Rspec']['Request'][0]['NetSpec'][0]['LinkSpec']
- if linkspecs:
- for l in linkspecs:
- n1 = Node.lookup(l['endpoint'][0])
- n2 = Node.lookup(l['endpoint'][1])
- bw = l['bw'][0]
- reqbps = get_tc_rate(bw)
- maxbps = get_tc_rate(maxbw)
-
- if reqbps <= 0:
- raise GeniInvalidArgument(bw, "BW")
- if reqbps > maxbps:
- raise PermissionError(" %s requested %s but max BW is %s" %
- (hrn, bw, maxbw))
-
- if adjacent_nodes(n1, n2, sites, sitelinks):
- availbps = get_avail_bps(n1, n2, sites, sitelinks)
- if availbps < reqbps:
- raise PermissionError("%s: capacity exceeded" % hrn)
- else:
- raise PermissionError("%s: nodes %s and %s not adjacent"
- % (hrn, n1.tag, n2.tag))
"""
Hook called via 'sfi.py create'
topo.nodeTopoFromRspec(rspec)
# Check request against current allocations
- #check_request(hrn, rspec, nodes, sites, sitelinks, maxbw)
+ topo.verifyNodeTopo(hrn, topo, maxbw)
nodes = topo.nodesInTopo()
hostnames = []
import re
import socket
+from sfa.util.faults import *
from sfa.rspecs.aggregates.vini.topology import *
default_topo_xml = """
tags.append(self.tags[t])
return tags
+ def lookupSiteLink(self, node1, node2):
+ site1 = self.sites[node1.site_id]
+ site2 = self.sites[node2.site_id]
+ for link in self.sitelinks:
+ if site1 == link.end1 and site2 == link.end2:
+ return link
+ if site2 == link.end1 and site1 == link.end2:
+ return link
+ return None
+
def nodeTopoFromRspec(self, rspec):
if self.nodelinks:
raise Error("virtual topology already present")
tag.delete()
tag.write(self.api)
+ """
+ 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.
+ """
def toxml(self, hrn = None):
xml = """<?xml version="1.0"?>
<Rspec xmlns="http://www.planet-lab.org/sfa/rspec/" name="vini">