--- /dev/null
+### $Id$
+### $URL$
+
+import os
+import time
+import datetime
+import sys
+import traceback
+
+from sfa.util.misc import *
+from sfa.util.rspec import *
+from sfa.util.specdict import *
+from sfa.util.faults import *
+from sfa.util.storage import *
+from sfa.util.debug import log
+from sfa.util.rspec import *
+from sfa.util.specdict import *
+from sfa.util.policy import Policy
+from sfa.server.aggregate import Aggregates
+
+class Nodes(SimpleStorage):
+
+ def __init__(self, api, ttl = 1):
+ self.api = api
+ self.ttl = ttl
+ self.threshold = None
+ path = self.api.config.basepath
+ filename = ".".join([self.api.interface, self.api.hrn, "nodes"])
+ filepath = path + os.sep + filename
+ self.nodes_file = filepath
+ SimpleStorage.__init__(self, self.nodes_file)
+ self.policy = Policy(api)
+ self.load()
+
+
+ def refresh(self):
+ """
+ Update the cached list of nodes
+ """
+
+ # Reload components list
+ now = datetime.datetime.now()
+ if not self.has_key('threshold') or not self.has_key('timestamp') or \
+ now > datetime.datetime.fromtimestamp(time.mktime(time.strptime(self['threshold'], self.api.time_format))):
+ if self.api.interface in ['aggregate']:
+ self.refresh_nodes_aggregate()
+ elif self.api.interface in ['slicemgr']:
+ self.refresh_nodes_smgr()
+
+
+ def refresh_nodes_aggregate(self):
+ rspec = Rspec()
+ rspec.parseString(self.get_rspec())
+
+ # filter nodes according to policy
+ blist = self.policy['node_blacklist']
+ wlist = self.policy['node_whitelist']
+ rspec.filter('NodeSpec', 'name', blacklist=blist, whitelist=wlist)
+
+ # extract ifspecs from rspec to get ips'
+ ips = []
+ ifspecs = rspec.getDictsByTagName('IfSpec')
+ for ifspec in ifspecs:
+ if ifspec.has_key('addr') and ifspec['addr']:
+ ips.append(ifspec['addr'])
+
+ # extract nodespecs from rspec to get dns names
+ hostnames = []
+ nodespecs = rspec.getDictsByTagName('NodeSpec')
+ for nodespec in nodespecs:
+ if nodespec.has_key('name') and nodespec['name']:
+ hostnames.append(nodespec['name'])
+
+ # update timestamp and threshold
+ timestamp = datetime.datetime.now()
+ hr_timestamp = timestamp.strftime(self.api.time_format)
+ delta = datetime.timedelta(hours=self.ttl)
+ threshold = timestamp + delta
+ hr_threshold = threshold.strftime(self.api.time_format)
+
+ node_details = {}
+ node_details['rspec'] = rspec.toxml()
+ node_details['ip'] = ips
+ node_details['dns'] = hostnames
+ node_details['timestamp'] = hr_timestamp
+ node_details['threshold'] = hr_threshold
+ # save state
+ self.update(node_details)
+ self.write()
+
+ def refresh_nodes_smgr(self):
+ # convert and threshold to ints
+ if self.has_key('timestamp') and self['timestamp']:
+ hr_timestamp = self['timestamp']
+ timestamp = datetime.datetime.fromtimestamp(time.mktime(time.strptime(hr_timestamp, self.api.time_format)))
+ hr_threshold = self['threshold']
+ threshold = datetime.datetime.fromtimestamp(time.mktime(time.strptime(hr_threshold, self.api.time_format)))
+ else:
+ timestamp = datetime.datetime.now()
+ hr_timestamp = timestamp.strftime(self.api.time_format)
+ delta = datetime.timedelta(hours=self.ttl)
+ threshold = timestamp + delta
+ hr_threshold = threshold.strftime(self.api.time_format)
+
+ start_time = int(timestamp.strftime("%s"))
+ end_time = int(threshold.strftime("%s"))
+ duration = end_time - start_time
+
+ aggregates = Aggregates(self.api)
+ rspecs = {}
+ networks = []
+ rspec = Rspec()
+ credential = self.api.getCredential()
+ for aggregate in aggregates:
+ try:
+ # get the rspec from the aggregate
+ agg_rspec = aggregates[aggregate].get_resources(credential)
+ # extract the netspec from each aggregates rspec
+ rspec.parseString(agg_rspec)
+ networks.extend([{'NetSpec': rspec.getDictsByTagName('NetSpec')}])
+ except:
+ # XX print out to some error log
+ print >> log, "Error calling list nodes at aggregate %s" % aggregate
+ traceback.print_exc(log)
+ exc_type, exc_value, exc_traceback = sys.exc_info()
+ raise exc_type, exc_value
+ # create the rspec dict
+ resources = {'networks': networks, 'start_time': start_time, 'duration': duration}
+ resourceDict = {'Rspec': resources}
+ # convert rspec dict to xml
+ rspec.parseDict(resourceDict)
+
+ # filter according to policy
+ blist = self.policy['node_blacklist']
+ wlist = self.policy['node_whitelist']
+ rspec.filter('NodeSpec', 'name', blacklist=blist, whitelist=wlist)
+
+ # update timestamp and threshold
+ timestamp = datetime.datetime.now()
+ hr_timestamp = timestamp.strftime(self.api.time_format)
+ delta = datetime.timedelta(hours=self.ttl)
+ threshold = timestamp + delta
+ hr_threshold = threshold.strftime(self.api.time_format)
+
+ nodedict = {'rspec': rspec.toxml(),
+ 'timestamp': hr_timestamp,
+ 'threshold': hr_threshold}
+
+ self.update(nodedict)
+ self.write()
+
+
+ def get_rspec(self, hrn = None):
+ """
+ Get resource information from PLC
+ """
+
+ # Get the required nodes
+ if not hrn:
+ nodes = self.api.plshell.GetNodes(self.api.plauth, {'peer_id': None})
+ try: linkspecs = self.api.plshell.GetLinkSpecs() # if call is supported
+ except: linkspecs = []
+ else:
+ slicename = hrn_to_pl_slicename(hrn)
+ slices = self.api.plshell.GetSlices(self.api.plauth, [slicename])
+ if not slices:
+ nodes = []
+ else:
+ slice = slices[0]
+ node_ids = slice['node_ids']
+ nodes = self.api.plshell.GetNodes(self.api.plauth, {'peer_id': None, 'node_id': node_ids})
+
+ # Filter out whitelisted nodes
+ public_nodes = lambda n: n.has_key('slice_ids_whitelist') and not n['slice_ids_whitelist']
+ nodes = filter(public_nodes, nodes)
+
+ # Get all network interfaces
+ interface_ids = []
+ for node in nodes:
+ # The field name has changed in plcapi 4.3
+ if self.api.plshell_version in ['4.2']:
+ interface_ids.extend(node['nodenetwork_ids'])
+ elif self.api.plshell_version in ['4.3']:
+ interface_ids.extend(node['interface_ids'])
+ else:
+ raise GeniAPIError, "Unsupported plcapi version ", \
+ self.api.plshell_version
+
+ if self.api.plshell_version in ['4.2']:
+ interfaces = self.api.plshell.GetNodeNetworks(self.api.plauth, interface_ids)
+ elif self.api.plshell_version in ['4.3']:
+ interfaces = self.api.plshell.GetInterfaces(self.api.plauth, interface_ids)
+ else:
+ raise GeniAPIError, "Unsupported plcapi version ", \
+ self.api.plshell_version
+ interface_dict = {}
+ for interface in interfaces:
+ if self.api.plshell_version in ['4.2']:
+ interface_dict[interface['nodenetwork_id']] = interface
+ elif self.api.plshell_version in ['4.3']:
+ interface_dict[interface['interface_id']] = interface
+ else:
+ raise GeniAPIError, "Unsupported plcapi version", \
+ self.api.plshell_version
+
+ # join nodes with thier interfaces
+ for node in nodes:
+ node['interfaces'] = []
+ if self.api.plshell_version in ['4.2']:
+ for nodenetwork_id in node['nodenetwork_ids']:
+ node['interfaces'].append(interface_dict[nodenetwork_id])
+ elif self.api.plshell_version in ['4.3']:
+ for interface_id in node['interface_ids']:
+ node['interfaces'].append(interface_dict[interface_id])
+ else:
+ raise GeniAPIError, "Unsupported plcapi version", \
+ self.api.plshell_version
+
+ # convert and threshold to ints
+ if self.has_key('timestamp') and self['timestamp']:
+ timestamp = datetime.datetime.fromtimestamp(time.mktime(time.strptime(self['timestamp'], self.api.time_format)))
+ threshold = datetime.datetime.fromtimestamp(time.mktime(time.strptime(self['threshold'], self.api.time_format)))
+ else:
+ timestamp = datetime.datetime.now()
+ delta = datetime.timedelta(hours=self.ttl)
+ threshold = timestamp + delta
+
+ start_time = int(timestamp.strftime("%s"))
+ end_time = int(threshold.strftime("%s"))
+ duration = end_time - start_time
+
+ # create the plc dict
+ networks = [{'nodes': nodes,
+ 'name': self.api.hrn,
+ 'start_time': start_time,
+ 'duration': duration}]
+ if not hrn:
+ networks[0]['links'] = linkspecs
+ resources = {'networks': networks, 'start_time': start_time, 'duration': duration}
+
+ # convert the plc dict to an rspec dict
+ resourceDict = RspecDict(resources)
+ # convert the rspec dict to xml
+ rspec = Rspec()
+ rspec.parseDict(resourceDict)
+ return rspec.toxml()
+
git://git.onelab.eu / sfa.git / blobdiff