import re
import socket
+from sfa.util.faults import *
from sfa.rspecs.aggregates.vini.topology import *
default_topo_xml = """
self.name = site['abbreviated_name'].replace(" ", "_")
self.tag = site['login_base']
self.public = site['is_public']
+ self.enabled = site['enabled']
self.links = set()
def get_sitenodes(self, nodes):
tags.append(self.tags[t])
return tags
- def nodeTopoFromRspec(self, rspec):
+ 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")
for node in self.getNodes():
nodedict[node.tag] = node
- linkspecs = rspecdict['Rspec']['Request'][0]['NetSpec'][0]['LinkSpec']
+ linkspecs = rspecdict['RSpec']['Request'][0]['NetSpec'][0]['LinkSpec']
for l in linkspecs:
n1 = nodedict[l['endpoint'][0]]
n2 = nodedict[l['endpoint'][1]]
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">
+<RSpec xmlns="http://www.planet-lab.org/sfa/rspec/" name="vini">
<Capacity>
<NetSpec name="physical_topology">"""
for site in self.getSites():
- if not site.public:
+ if not (site.public and site.enabled):
continue
xml += """
xml += """
</NetSpec>
</Request>
-</Rspec>"""
+</RSpec>"""
# Remove all leading whitespace and newlines
lines = xml.split("\n")