from sfa.server.registry import Registries
from sfa.plc.nodes import *
import sys
-import pdb
+import socket
SFA_VINI_DEFAULT_RSPEC = '/etc/sfa/vini.rspec'
+class Node:
+ def __init__(self, node):
+ self.id = node['node_id']
+ self.hostname = node['hostname']
+ self.shortname = self.hostname.replace('.vini-veritas.net', '')
+ self.site_id = node['site_id']
+ self.ipaddr = socket.gethostbyname(self.hostname)
+
+ def get_link_id(self, remote):
+ if self.id < remote.id:
+ link = (self.id<<7) + remote.id
+ else:
+ link = (remote.id<<7) + self.id
+ return link
+
+ def get_iface_id(self, remote):
+ if self.id < remote.id:
+ iface = 1
+ else:
+ iface = 2
+ return iface
+
+ def get_virt_ip(self, remote):
+ link = self.get_link_id(remote)
+ iface = self.get_iface_id(remote)
+ first = link >> 6
+ second = ((link & 0x3f)<<2) + iface
+ return "192.168.%d.%d" % (first, second)
+
+ def get_virt_net(self, remote):
+ link = self.get_link_id(remote)
+ first = link >> 6
+ second = (link & 0x3f)<<2
+ return "192.168.%d.%d/30" % (first, second)
+
+ def get_site(self, sites):
+ return sites[self.site_id]
+
+ def adjacent_nodes(self, sites, nodes, node_ids):
+ mysite = self.get_site(sites)
+ adj_ids = mysite.adj_node_ids.intersection(node_ids)
+ adj_nodes = []
+ for id in adj_ids:
+ adj_nodes.append(nodes[id])
+ return adj_nodes
+
+ def init_rspecs(self):
+ self.rspecs = []
+
+ def add_rspec(self, remote):
+ my_ip = self.get_virt_ip(remote)
+ remote_ip = remote.get_virt_ip(self)
+ net = self.get_virt_net(remote)
+ rspec = remote.id, remote.ipaddr, "1Mbit", my_ip, remote_ip, net
+ self.rspecs.append(rspec)
+
+
+class Site:
+ def __init__(self, site):
+ self.id = site['site_id']
+ self.node_ids = site['node_ids']
+ self.adj_site_ids = set()
+ self.adj_node_ids = set()
+
+ def get_sitenodes(self, nodes):
+ n = []
+ for i in self.node_ids:
+ n.append(nodes[i])
+ return n
+
+ def add_adjacency(self, site):
+ self.adj_site_ids.add(site.id)
+ for n in site.node_ids:
+ self.adj_node_ids.add(n)
+
+
+class Slice:
+ def __init__(self, slice):
+ self.id = slice['slice_id']
+ self.name = slice['name']
+ self.node_ids = set(slice['node_ids'])
+ self.slice_tag_ids = slice['slice_tag_ids']
+
+ def get_tag(self, tagname, slicetags, node = None):
+ for i in self.slice_tag_ids:
+ tag = slicetags[i]
+ if tag.tagname == tagname:
+ if (not node) or (node.id == tag.node_id):
+ return tag
+ else:
+ return None
+
+ def get_nodes(self, nodes):
+ n = []
+ for id in self.node_ids:
+ n.append(nodes[id])
+ return n
+
+
+ # Add a new slice tag
+ def add_tag(self, tagname, value, slicetags, node = None):
+ record = {'slice_tag_id':None, 'slice_id':self.id, 'tagname':tagname, 'value':value}
+ if node:
+ record['node_id'] = node.id
+ else:
+ record['node_id'] = None
+ tag = Slicetag(record)
+ slicetags[tag.id] = tag
+ self.slice_tag_ids.append(tag.id)
+ tag.changed = True
+ tag.updated = True
+ return tag
+
+ # Update a slice tag if it exists, else add it
+ def update_tag(self, tagname, value, slicetags, node = None):
+ tag = self.get_tag(tagname, slicetags, node)
+ if tag and tag.value == value:
+ value = "no change"
+ elif tag:
+ tag.value = value
+ tag.changed = True
+ else:
+ tag = self.add_tag(tagname, value, slicetags, node)
+ tag.updated = True
+
+ def assign_egre_key(self, slicetags):
+ if not self.get_tag('egre_key', slicetags):
+ try:
+ key = free_egre_key(slicetags)
+ self.update_tag('egre_key', key, slicetags)
+ except:
+ # Should handle this case...
+ pass
+ return
+
+ def turn_on_netns(self, slicetags):
+ tag = self.get_tag('netns', slicetags)
+ if (not tag) or (tag.value != '1'):
+ self.update_tag('netns', '1', slicetags)
+ return
+
+ def turn_off_netns(self, slicetags):
+ tag = self.get_tag('netns', slicetags)
+ if tag and (tag.value != '0'):
+ tag.delete()
+ return
+
+ def add_cap_net_admin(self, slicetags):
+ tag = self.get_tag('capabilities', slicetags)
+ if tag:
+ caps = tag.value.split(',')
+ for cap in caps:
+ if cap == "CAP_NET_ADMIN":
+ return
+ else:
+ newcaps = "CAP_NET_ADMIN," + tag.value
+ self.update_tag('capabilities', newcaps, slicetags)
+ else:
+ self.add_tag('capabilities', 'CAP_NET_ADMIN', slicetags)
+ return
+
+ def remove_cap_net_admin(self, slicetags):
+ tag = self.get_tag('capabilities', slicetags)
+ if tag:
+ caps = tag.value.split(',')
+ newcaps = []
+ for cap in caps:
+ if cap != "CAP_NET_ADMIN":
+ newcaps.append(cap)
+ if newcaps:
+ value = ','.join(newcaps)
+ self.update_tag('capabilities', value, slicetags)
+ else:
+ tag.delete()
+ return
+
+ # Update the vsys/setup-link and vsys/setup-nat slice tags.
+ def add_vsys_tags(self, slicetags):
+ link = nat = False
+ for i in self.slice_tag_ids:
+ tag = slicetags[i]
+ if tag.tagname == 'vsys':
+ if tag.value == 'setup-link':
+ link = True
+ elif tag.value == 'setup-nat':
+ nat = True
+ if not link:
+ self.add_tag('vsys', 'setup-link', slicetags)
+ if not nat:
+ self.add_tag('vsys', 'setup-nat', slicetags)
+ return
+
+
+class Slicetag:
+ newid = -1
+ def __init__(self, tag):
+ self.id = tag['slice_tag_id']
+ if not self.id:
+ # Make one up for the time being...
+ self.id = Slicetag.newid
+ Slicetag.newid -= 1
+ self.slice_id = tag['slice_id']
+ self.tagname = tag['tagname']
+ self.value = tag['value']
+ self.node_id = tag['node_id']
+ self.updated = False
+ self.changed = False
+ self.deleted = False
+
+ # Mark a tag as deleted
+ def delete(self):
+ self.deleted = True
+ self.updated = True
+
+ def write(self, slices, nodes, dryrun):
+ if not dryrun:
+ if self.changed:
+ if int(self.id) > 0:
+ UpdateSliceTag(self.id, self.value)
+ else:
+ AddSliceTag(self.slice_id, self.tagname, self.value, self.node_id)
+ elif self.deleted and int(self.id) > 0:
+ DeleteSliceTag(self.id)
+ else:
+ slice = slices[self.slice_id].name
+ if self.node_id:
+ node = nodes[tag.node_id].hostname
+ if self.updated:
+ if self.deleted:
+ self.value = "deleted"
+ elif not self.changed:
+ self.value = "no change"
+ if int(self.id) < 0:
+ self.id = "new"
+ if self.node_id:
+ print "[%s] %s: %s (%s, %s)" % (self.id, self.tagname, self.value, slice, node)
+ else:
+ print "[%s] %s: %s (%s)" % (self.id, self.tagname, self.value, slice)
+
+
+"""
+Create a dictionary of site objects keyed by site ID
+"""
+def get_sites():
+ tmp = []
+ for site in GetSites():
+ t = site['site_id'], Site(site)
+ tmp.append(t)
+ return dict(tmp)
+
+
+"""
+Create a dictionary of node objects keyed by node ID
+"""
+def get_nodes(api):
+ tmp = []
+ for node in api.plshell.GetNodes(api.plauth):
+ t = node['node_id'], Node(node)
+ tmp.append(t)
+ return dict(tmp)
+
+"""
+Create a dictionary of slice objects keyed by slice ID
+"""
+def get_slice(api, slicename):
+ slice = api.plshell.GetSlices(api.plauth, [slicename])
+ if slice:
+ return Slice(slice[0])
+ else:
+ return None
+
+"""
+Create a dictionary of slicetag objects keyed by slice tag ID
+"""
+def get_slice_tags(api):
+ tmp = []
+ for tag in api.plshell.GetSliceTags(api.plauth):
+ t = tag['slice_tag_id'], Slicetag(tag)
+ tmp.append(t)
+ return dict(tmp)
+
+"""
+Find a free EGRE key
+"""
+def free_egre_key(slicetags):
+ used = set()
+ for i in slicetags:
+ tag = slicetags[i]
+ if tag.tagname == 'egre_key':
+ used.add(int(tag.value))
+
+ for i in range(1, 256):
+ if i not in used:
+ key = i
+ break
+ else:
+ raise KeyError("No more EGRE keys available")
+
+ return "%s" % key
+
+
"""
Copied from create_slice_aggregate() in sfa.plc.slices
"""
return 1
def get_rspec(api, hrn):
- rspec = None
+ # Get default rspec
+ default = Rspec()
+ default.parseFile(SFA_VINI_DEFAULT_RSPEC)
if (hrn):
- # XX rspec is expected to be xml, not None.
- # call the default sfa.plc.nodes.get_rspec() methods
- # until things are complete here
+ slicename = hrn_to_pl_slicename(hrn)
+ defaultrspec = default.toGenDict()
+ nodedict = get_nodedict(defaultrspec)
+
+ # call the default sfa.plc.nodes.get_rspec() method
nodes = Nodes(api)
rspec = nodes.get_rspec(hrn)
-
- # Convert HRN to slice name
- # Get SliceTags for the slice
- # Construct LinkSpecs from the topo_rspec SliceTags
- # The first field is the NodeId of the remote node.
- # So the endpoints are the SliceTag node and the remote node.
+ # Grab all the PLC info we'll need at once
+ slice = get_slice(api, slicename)
+ if slice:
+ nodes = get_nodes(api)
+ tags = get_slice_tags(api)
- # How to:
- # - avoid duplicates?
- # - verify both ends of the link?
- pass
+ # Add the node tags from the Capacity statement to Node objects
+ for (k, v) in nodedict.iteritems():
+ for id in nodes:
+ if v == nodes[id].hostname:
+ nodes[id].tag = k
+
+ endpoints = []
+ for node in slice.get_nodes(nodes):
+ linktag = slice.get_tag('topo_rspec', tags, node)
+ if linktag:
+ l = eval(linktag.value)
+ for (id, realip, bw, lvip, rvip, vnet) in l:
+ endpoints.append((node.id, id, bw))
+
+ if endpoints:
+ linkspecs = []
+ for (l, r, bw) in endpoints:
+ if (r, l, bw) in endpoints:
+ if l < r:
+ edict = {}
+ edict['endpoint'] = [nodes[l].tag, nodes[r].tag]
+ edict['bw'] = [bw]
+ linkspecs.append(edict)
+
+ d = default.toDict()
+ d['Rspec']['Request'][0]['NetSpec'][0]['LinkSpec'] = linkspecs
+ d['Rspec']['Request'][0]['NetSpec'][0]['name'] = hrn
+ new = Rspec()
+ new.parseDict(d)
+ rspec = new.toxml()
else:
# Return canned response for now...
- r = Rspec()
- r.parseFile(SFA_VINI_DEFAULT_RSPEC)
- rspec = r.toxml()
+ rspec = default.toxml()
return rspec
return True
-def rspec_to_nodeset(rspec):
+def get_nodedict(rspec):
nodedict = {}
- nodes = set()
- try:
+ try:
sitespecs = rspec['Rspec'][0]['Capacity'][0]['NetSpec'][0]['SiteSpec']
for s in sitespecs:
for node in s['NodeSpec']:
nodedict[node['name'][0]] = node['hostname'][0]
+ except KeyError:
+ pass
+
+ return nodedict
+
+def rspec_to_nodeset(rspec):
+ nodes = set()
+ try:
+ nodedict = get_nodedict(rspec)
linkspecs = rspec['Rspec'][0]['Request'][0]['NetSpec'][0]['LinkSpec']
for l in linkspecs:
for e in l['endpoint']:
nodes.add(nodedict[e])
-
except KeyError:
# Bad Rspec
pass
git://git.onelab.eu / sfa.git / commitdiff