formatting
authorTony Mack <tmack@cs.princeton.edu>
Tue, 27 Jan 2009 01:50:47 +0000 (01:50 +0000)
committerTony Mack <tmack@cs.princeton.edu>
Tue, 27 Jan 2009 01:50:47 +0000 (01:50 +0000)
geni/aggregate.py
geni/slicemgr.py

index 78bb9be..d898273 100644 (file)
@@ -4,14 +4,14 @@ import datetime
 import time
 import xmlrpclib
 
-from util.geniserver import *
-from util.geniclient import *
-from util.cert import *
-from util.trustedroot import *
-from util.excep import *
-from util.misc import *
-from util.config import Config
-from util.rspec import Rspec
+from geni.util.geniserver import *
+from geni.util.geniclient import *
+from geni.util.cert import *
+from geni.util.trustedroot import *
+from geni.util.excep import *
+from geni.util.misc import *
+from geni.util.config import Config
+from geni.util.rspec import Rspec
 
 class Aggregate(GeniServer):
 
@@ -20,10 +20,10 @@ class Aggregate(GeniServer):
     components_ttl = None
     components = []
     whitelist_file = None
-    blacklist_file = None      
+    blacklist_file = None    
     policy = {}
     timestamp = None
-    threshold = None   
+    threshold = None    
     shell = None
     registry = None
   
@@ -37,318 +37,317 @@ class Aggregate(GeniServer):
 
     def __init__(self, ip, port, key_file, cert_file, config = "/usr/share/geniwrapper/util/geni_config"):
         GeniServer.__init__(ip, port, keyfile, cert_file)
-       
-           conf = Config(config)
+        conf = Config(config)
         basedir = conf.GENI_BASE_DIR + os.sep
         server_basedir = basedir + os.sep + "plc" + os.sep
-           self.hrn = conf.GENI_INTERFACE_HRN
-           self.components_file = os.sep.join([server_basedir, 'components', hrn + '.comp'])
-           self.whitelist_file = os.sep.join([server_basedir, 'policy', 'whitelist'])
-           self.blacklist_file = os.sep.join([server_basedir, 'policy', 'blacklist'])
-           self.timestamp_file = os.sep.join([server_basedir, 'components', hrn + '.timestamp']) 
-           self.components_ttl = components_ttl
-           self.policy['whitelist'] = []
-           self.policy['blacklist'] = []
-           self.connectPLC()
-           self.connectRegistry()
+        self.hrn = conf.GENI_INTERFACE_HRN
+        self.components_file = os.sep.join([server_basedir, 'components', hrn + '.comp'])
+        self.whitelist_file = os.sep.join([server_basedir, 'policy', 'whitelist'])
+        self.blacklist_file = os.sep.join([server_basedir, 'policy', 'blacklist'])
+        self.timestamp_file = os.sep.join([server_basedir, 'components', hrn + '.timestamp']) 
+        self.components_ttl = components_ttl
+        self.policy['whitelist'] = []
+        self.policy['blacklist'] = []
+        self.connectPLC()
+        self.connectRegistry()
 
     def connectRegistry(self):
-           """
-           Connect to the registry
-           """
-        
-
+        """
+        Connect to the registry
+        """
+        pass
+    
     def connectPLC(self):
-           """
-           Connect to the plc api interface. First attempt to impor thte shell, if that fails
-           try to connect to the xmlrpc server.
-           """
-           self.auth = {'Username': conf.GENI_PLC_USER,
+        """
+        Connect to the plc api interface. First attempt to impor thte shell, if that fails
+        try to connect to the xmlrpc server.
+        """
+        self.auth = {'Username': conf.GENI_PLC_USER,
                      'AuthMethod': 'password',
                      'AuthString': conf.GENI_PLC_PASSWORD}
 
-           try:
-               # try to import PLC.Shell directly
-               sys.path.append(conf.GENI_PLC_SHELL_PATH) 
-               import PLC.Shell
-               self.shell = PLC.Shell.Shell(globals())
-               self.shell.AuthCheck()
-           except ImportError:
+        try:
+           # try to import PLC.Shell directly
+            sys.path.append(conf.GENI_PLC_SHELL_PATH) 
+            import PLC.Shell
+            self.shell = PLC.Shell.Shell(globals())
+            self.shell.AuthCheck()
+        except ImportError:
             # connect to plc api via xmlrpc
-               plc_host = conf.GENI_PLC_HOST
-               plc_port = conf.GENI_PLC_PORT
-               plc_api_path = conf.GENI_PLC_API_PATH                        
-               url = "https://%(plc_host)s:%(plc_port)s/%(plc_api_path)s/" % locals()
+            plc_host = conf.GENI_PLC_HOST
+            plc_port = conf.GENI_PLC_PORT
+            plc_api_path = conf.GENI_PLC_API_PATH                 
+            url = "https://%(plc_host)s:%(plc_port)s/%(plc_api_path)s/" % locals()
             self.auth = {'Username': conf.GENI_PLC_USER,
-                        'AuthMethod': 'password',
-                        'AuthString': conf.GENI_PLC_PASSWORD} 
+                 'AuthMethod': 'password',
+                 'AuthString': conf.GENI_PLC_PASSWORD} 
 
-               self.shell = xmlrpclib.Server(url, verbose = 0, allow_none = True) 
-               self.shell.AuthCheck(self.auth) 
+            self.shell = xmlrpclib.Server(url, verbose = 0, allow_none = True) 
+            self.shell.AuthCheck(self.auth) 
 
     def hostname_to_hrn(self, login_base, hostname):
-           """
-           Convert hrn to plantelab name.
-           """
+        """
+        Convert hrn to plantelab name.
+        """
         genihostname = "_".join(hostname.split("."))
         return ".".join([self.hrn, login_base, genihostname])
 
     def slicename_to_hrn(self, slicename):
-           """
-           Convert hrn to planetlab name.
-           """
+        """
+        Convert hrn to planetlab name.
+        """
         slicename = slicename.replace("_", ".")
         return ".".join([self.hrn, slicename])
 
     def refresh_components(self):
-           """
-           Update the cached list of nodes.
-           """
-           # resolve component hostnames 
-           nodes = self.shell.GetNodes(self.auth, {}, ['hostname', 'site_id'])
-       
-           # resolve site login_bases
-           site_ids = [node['site_id'] for node in nodes]
-           sites = self.shell.GetSites(self.auth, site_ids, ['site_id', 'login_base'])
-           site_dict = {}
-           for site in sites:
-               site_dict[site['site_id']] = site['login_base']
-
-           # convert plc names to geni hrn
-           self.components = [self.hostname_to_hrn(site_dict[node['site_id']], node['hostname']) for node in nodes]
-
-           # apply policy. Do not allow nodes found in blacklist, only allow nodes found in whitelist
-           whitelist_policy = lambda node: node in self.policy['whitelist']
-           blacklist_policy = lambda node: node not in self.policy['blacklist']
-
-           if self.policy['blacklist']:
-               self.components = blacklist_policy(self.components)
-           if self.policy['whitelist']:
-               self.components = whitelist_policy(self.components)
-               
-           # update timestamp and threshold
-           self.timestamp = datetime.datetime.now()
-           delta = datetime.timedelta(hours=self.components_ttl)
-           self.threshold = self.timestamp + delta 
-       
-           f = open(self.components_file, 'w')
-           f.write(str(self.components))
-           f.close()
-           f = open(self.timestamp_file, 'w')
-           f.write(str(self.threshold))
-           f.close()
+        """
+        Update the cached list of nodes.
+        """
+        # resolve component hostnames 
+        nodes = self.shell.GetNodes(self.auth, {}, ['hostname', 'site_id'])
+    
+        # resolve site login_bases
+        site_ids = [node['site_id'] for node in nodes]
+        sites = self.shell.GetSites(self.auth, site_ids, ['site_id', 'login_base'])
+        site_dict = {}
+        for site in sites:
+            site_dict[site['site_id']] = site['login_base']
+
+        # convert plc names to geni hrn
+        self.components = [self.hostname_to_hrn(site_dict[node['site_id']], node['hostname']) for node in nodes]
+
+        # apply policy. Do not allow nodes found in blacklist, only allow nodes found in whitelist
+        whitelist_policy = lambda node: node in self.policy['whitelist']
+        blacklist_policy = lambda node: node not in self.policy['blacklist']
+
+        if self.policy['blacklist']:
+            self.components = blacklist_policy(self.components)
+        if self.policy['whitelist']:
+            self.components = whitelist_policy(self.components)
+            
+        # update timestamp and threshold
+        self.timestamp = datetime.datetime.now()
+        delta = datetime.timedelta(hours=self.components_ttl)
+        self.threshold = self.timestamp + delta 
+    
+        f = open(self.components_file, 'w')
+        f.write(str(self.components))
+        f.close()
+        f = open(self.timestamp_file, 'w')
+        f.write(str(self.threshold))
+        f.close()
  
     def load_components(self):
-           """
-           Read cached list of nodes.
-           """
-           # Read component list from cached file 
-           if os.path.exists(self.components_file):
-               f = open(self.components_file, 'r')
-               self.components = eval(f.read())
-               f.close()
-       
-           time_format = "%Y-%m-%d %H:%M:%S"
-           if os.path.exists(self.timestamp_file):
-               f = open(self.timestamp_file, 'r')
-               timestamp = str(f.read()).split(".")[0]
-               self.timestamp = datetime.datetime.fromtimestamp(time.mktime(time.strptime(timestamp, time_format)))
-               delta = datetime.timedelta(hours=self.components_ttl)
+        """
+        Read cached list of nodes.
+        """
+        # Read component list from cached file 
+        if os.path.exists(self.components_file):
+            f = open(self.components_file, 'r')
+            self.components = eval(f.read())
+            f.close()
+    
+        time_format = "%Y-%m-%d %H:%M:%S"
+        if os.path.exists(self.timestamp_file):
+            f = open(self.timestamp_file, 'r')
+            timestamp = str(f.read()).split(".")[0]
+            self.timestamp = datetime.datetime.fromtimestamp(time.mktime(time.strptime(timestamp, time_format)))
+            delta = datetime.timedelta(hours=self.components_ttl)
             self.threshold = self.timestamp + delta
-               f.close()       
+            f.close()    
 
     def load_policy(self):
-           """
-           Read the list of blacklisted and whitelisted nodes.
-           """
-           whitelist = []
-           blacklist = []
-           if os.path.exists(self.whitelist_file):
+        """
+        Read the list of blacklisted and whitelisted nodes.
+        """
+        whitelist = []
+        blacklist = []
+        if os.path.exists(self.whitelist_file):
             f = open(self.whitelist_file, 'r')
-               lines = f.readlines()
+            lines = f.readlines()
             f.close()
-           for line in lines:
-                   line = line.strip().replace(" ", "").replace("\n", "")
-                   whitelist.extend(line.split(","))
-                       
-       
-           if os.path.exists(self.blacklist_file):
+        for line in lines:
+            line = line.strip().replace(" ", "").replace("\n", "")
+            whitelist.extend(line.split(","))
+            
+    
+        if os.path.exists(self.blacklist_file):
             f = open(self.blacklist_file, 'r')
             lines = f.readlines()
             f.close()
-           for line in lines:
+        for line in lines:
             line = line.strip().replace(" ", "").replace("\n", "")
             blacklist.extend(line.split(","))
 
-           self.policy['whitelist'] = whitelist
-           self.policy['blacklist'] = blacklist
+        self.policy['whitelist'] = whitelist
+        self.policy['blacklist'] = blacklist
 
     def get_components(self):
-           """
-           Return a list of components at this aggregate.
-           """
-           # Reload components list
-           now = datetime.datetime.now()
-           #self.load_components()
-           if not self.threshold or not self.timestamp or now > self.threshold:
-               self.refresh_components()
-           elif now < self.threshold and not self.components: 
-               self.load_components()
-           return self.components
+        """
+        Return a list of components at this aggregate.
+        """
+        # Reload components list
+        now = datetime.datetime.now()
+        #self.load_components()
+        if not self.threshold or not self.timestamp or now > self.threshold:
+            self.refresh_components()
+        elif now < self.threshold and not self.components: 
+            self.load_components()
+        return self.components
      
     def get_rspec(self, hrn, type):
-           rspec = Rspec()
-           rspec['nodespec'] = {'name': self.conf.GENI_INTERFACE_HRN}
-           rsepc['nodespec']['nodes'] = []
-           if type in ['node']:
-               nodes = self.shell.GetNodes(self.auth)
-           elif type in ['slice']:
-               slicename = hrn_to_pl_slicename(hrn)
-               slices = self.shell.GetSlices(self.auth, [slicename])
-               node_ids = slices[0]['node_ids']
-               nodes = self.shell.GetNodes(self.auth, node_ids) 
-               for node in nodes:
-                   nodespec = {'name': node['hostname'], 'type': 'std'}
-           elif type in ['aggregate']:
-               pass
-
-           return rspec
+        rspec = Rspec()
+        rspec['nodespec'] = {'name': self.conf.GENI_INTERFACE_HRN}
+        rsepc['nodespec']['nodes'] = []
+        if type in ['node']:
+            nodes = self.shell.GetNodes(self.auth)
+        elif type in ['slice']:
+            slicename = hrn_to_pl_slicename(hrn)
+            slices = self.shell.GetSlices(self.auth, [slicename])
+            node_ids = slices[0]['node_ids']
+            nodes = self.shell.GetNodes(self.auth, node_ids) 
+            for node in nodes:
+                nodespec = {'name': node['hostname'], 'type': 'std'}
+        elif type in ['aggregate']:
+            pass
+
+        return rspec
 
     def get_resources(self, slice_hrn):
-           """
-           Return the current rspec for the specified slice.
-           """
-           slicename = hrn_to_plcslicename(slice_hrn)
-           rspec = self.get_rspec(slicenamem, 'slice')
+        """
+        Return the current rspec for the specified slice.
+        """
+        slicename = hrn_to_plcslicename(slice_hrn)
+        rspec = self.get_rspec(slicenamem, 'slice')
         
-           return rspec
+        return rspec
  
     def create_slice(self, slice_hrn, rspec, attributes = []):
-           """
-           Instantiate the specified slice according to whats defined in the rspec.
-           """
-           slicename = self.hrn_to_plcslicename(slice_hrn)
-           spec = Rspec(rspec)
-           nodespecs = spec.getDictsByTagName('NodeSpec')
-           nodes = [nodespec['name'] for nodespec in nodespecs]        
-           self.shell.AddSliceToNodes(self.auth, slicename, nodes)
-           for attribute in attributes:
-               type, value, node, nodegroup = attribute['type'], attribute['value'], attribute['node'], attribute['nodegroup']
-               shell.AddSliceAttribute(self.auth, slicename, type, value, node, nodegroup)
-
-           # XX contact the registry to get the list of users on this slice and
-           # their keys.
-           #slice_record = self.registry.resolve(slice_hrn)
-           #person_records = slice_record['users']
-           # for person in person_record:
-           #    email = person['email']
-           #    self.shell.AddPersonToSlice(self.auth, email, slicename) 
-        
-
-           return 1
+        """
+        Instantiate the specified slice according to whats defined in the rspec.
+        """
+        slicename = self.hrn_to_plcslicename(slice_hrn)
+        spec = Rspec(rspec)
+        nodespecs = spec.getDictsByTagName('NodeSpec')
+        nodes = [nodespec['name'] for nodespec in nodespecs]    
+        self.shell.AddSliceToNodes(self.auth, slicename, nodes)
+        for attribute in attributes:
+            type, value, node, nodegroup = attribute['type'], attribute['value'], attribute['node'], attribute['nodegroup']
+            shell.AddSliceAttribute(self.auth, slicename, type, value, node, nodegroup)
+
+        # XX contact the registry to get the list of users on this slice and
+        # their keys.
+        #slice_record = self.registry.resolve(slice_hrn)
+        #person_records = slice_record['users']
+        # for person in person_record:
+        #    email = person['email']
+        #    self.shell.AddPersonToSlice(self.auth, email, slicename) 
+     
+
+        return 1
 
     def update_slice(self, slice_hrn, rspec, attributes = []):
-           """
-           Update the specified slice.
-           """
-           # Get slice info
-           slicename = self.hrn_to_plcslicename(slice_hrn)
+        """
+        Update the specified slice.
+        """
+        # Get slice info
+        slicename = self.hrn_to_plcslicename(slice_hrn)
         slices = self.shell.GetSlices(self.auth, [slicename], ['node_ids'])
         if not slice:
             raise RecordNotFound(slice_hrn)
         slice = slices[0]
 
-           # find out where this slice is currently running
+        # find out where this slice is currently running
         nodes = self.shell.GetNodes(self.auth, slice['node_ids'], ['hostname'])
         hostnames = [node['hostname'] for node in nodes]
 
-           # get netspec details
-           spec = Rspec(rspec)
-           nodespecs = spec.getDictsByTagName('NodeSpec')
-        nodes = [nodespec['name'] for nodespec in nodespecs]   
-           # remove nodes not in rspec
-           delete_nodes = set(hostnames).difference(nodes)
-           # add nodes from rspec
-           added_nodes = set(nodes).difference(hostnames)
-       
+        # get netspec details
+        spec = Rspec(rspec)
+        nodespecs = spec.getDictsByTagName('NodeSpec')
+        nodes = [nodespec['name'] for nodespec in nodespecs]    
+        # remove nodes not in rspec
+        delete_nodes = set(hostnames).difference(nodes)
+        # add nodes from rspec
+        added_nodes = set(nodes).difference(hostnames)
+    
         shell.AddSliceToNodes(self.auth, slicename, added_nodes)
-           shell.DeleteSliceFromNodes(self.auth, slicename, deleted_nodes)
+        shell.DeleteSliceFromNodes(self.auth, slicename, deleted_nodes)
 
         for attribute in attributes:
             type, value, node, nodegroup = attribute['type'], attribute['value'], attribute['node'], attribute['nodegroup']
             shell.AddSliceAttribute(self.auth, slicename, type, value, node, nodegroup)
-       
-           # contact registry to get slice users and add them to the slice
-           # slice_record = self.registry.resolve(slice_hrn)
-           # persons = slice_record['users']
-               
-           #for person in persons:
-           #    shell.AddPersonToSlice(person['email'], slice_name) 
+    
+        # contact registry to get slice users and add them to the slice
+        # slice_record = self.registry.resolve(slice_hrn)
+        # persons = slice_record['users']
+        
+        #for person in persons:
+        #    shell.AddPersonToSlice(person['email'], slice_name) 
     def delete_slice_(self, slice_hrn):
-           """
-           Remove this slice from all components it was previouly associated with and 
-           free up the resources it was using.
-           """
-           slicename = self.hrn_to_plcslicename(slice_hrn)
-           slices = shell.GetSlices(self.auth, [slicename])
-           if not slice:
-               raise RecordNotFound(slice_hrn)
-           slice = slices[0]
-         
-           shell.DeleteSliceFromNodes(self.auth, slicename, slice['node_ids'])
-           return 1
+        """
+        Remove this slice from all components it was previouly associated with and 
+        free up the resources it was using.
+        """
+        slicename = self.hrn_to_plcslicename(slice_hrn)
+        slices = shell.GetSlices(self.auth, [slicename])
+        if not slice:
+            raise RecordNotFound(slice_hrn)
+        slice = slices[0]
+      
+        shell.DeleteSliceFromNodes(self.auth, slicename, slice['node_ids'])
+        return 1
 
     def start_slice(self, slice_hrn):
-           """
-           Stop the slice at plc.
-           """
-           slicename = hrn_to_plcslicename(slice_hrn)
-           slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
-           if not slices:
-               raise RecordNotFound(slice_hrn)
-           slice_id = slices[0]
-           atrribtes = self.shell.GetSliceAttributes({'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
-           attribute_id = attreibutes[0] 
-           self.shell.UpdateSliceAttribute(self.auth, attribute_id, "1" )
-           return 1
+        """
+        Stop the slice at plc.
+        """
+        slicename = hrn_to_plcslicename(slice_hrn)
+        slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
+        if not slices:
+            raise RecordNotFound(slice_hrn)
+        slice_id = slices[0]
+        atrribtes = self.shell.GetSliceAttributes({'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
+        attribute_id = attreibutes[0] 
+        self.shell.UpdateSliceAttribute(self.auth, attribute_id, "1" )
+        return 1
 
     def stop_slice(self, slice_hrn):
-           """
-           Stop the slice at plc
-           """
-           slicename = hrn_to_plcslicename(slice_hrn)
-           slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
+        """
+        Stop the slice at plc
+        """
+        slicename = hrn_to_plcslicename(slice_hrn)
+        slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
         if not slices:
             raise RecordNotFound(slice_hrn)
         slice_id = slices[0]
         atrribtes = self.shell.GetSliceAttributes({'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
         attribute_id = attreibutes[0]
-           self.shell.UpdateSliceAttribute(self.auth, attribute_id, "0")
-           return 1
+        self.shell.UpdateSliceAttribute(self.auth, attribute_id, "0")
+        return 1
 
 
     def reset_slice(self, slice_hrn):
-           """
-           Reset the slice
-           """
-           slicename = self.hrn_to_plcslicename(slice_hrn)
-           return 1
+        """
+        Reset the slice
+        """
+        slicename = self.hrn_to_plcslicename(slice_hrn)
+        return 1
 
     def get_policy(self):
-           """
-           Return this aggregates policy.
-           """
-       
-           return self.policy
-       
-       
+        """
+        Return this aggregates policy.
+        """
+    
+        return self.policy
+        
+    
 
 ##############################
 ## Server methods here for now
 ##############################
 
     def nodes(self):
-        return self..get_components()
+        return self.get_components()
 
     #def slices(self):
     #    return self.get_slices()
@@ -367,7 +366,7 @@ class Aggregate(GeniServer):
     def update(self, cred, hrn, rspec):
         self.decode_authentication(cred, 'embed')
         self.verify_object_belongs_to_me(hrn)
-        return self.update(hrn)        
+        return self.update(hrn)    
 
     def delete(self, cred, hrn):
         self.decode_authentication(cred, 'embed')
@@ -403,4 +402,4 @@ class Aggregate(GeniServer):
         self.server.register_function(self.stop)
         self.server.register_function(self.reset)
         self.server.register_function(self.policy)
-               
+              
index 0f28d54..8b9e925 100644 (file)
@@ -3,13 +3,13 @@ import sys
 import datetime
 import time
 
-from util.geniserver import *
-from util.geniclient import *
-from util.cert import *
-from util.trustedroot import *
-from util.excep import *
-from util.misc import *
-from util.config import Config
+from geni.util.geniserver import *
+from geni.util.geniclient import *
+from geni.util.cert import *
+from geni.util.trustedroot import *
+from geni.util.excep import *
+from geni.util.misc import *
+from geni.util.config import Config
 
 class SliceMgr(GeniServer):
 
@@ -17,16 +17,16 @@ class SliceMgr(GeniServer):
     key_file = None
     cert_file = None
     components_file = None
-    slices_file = None 
+    slices_file = None    
     components_ttl = None
     components = []
-    slices = []        
+    slices = []    
     policy = {}
     timestamp = None
-    threshold = None   
+    threshold = None    
     shell = None
     aggregates = {}
-       
+    
   
     ##
     # Create a new slice manager object.
@@ -38,133 +38,133 @@ class SliceMgr(GeniServer):
 
     def __init__(self, ip, port, key_file, cert_file, config = "/usr/share/geniwrapper/util/geni_config"):
         GeniServer.__init__(ip, port, key_file, cert_file)
-           self.key_file = key_file
-           self.cert_file = cert_file
-           self.conf = Config(config)
+        self.key_file = key_file
+        self.cert_file = cert_file
+        self.conf = Config(config)
         basedir = self.conf.GENI_BASE_DIR + os.sep
         server_basedir = basedir + os.sep + "plc" + os.sep
-           self.hrn = conf.GENI_INTERFACE_HRN
-       
-           # Get list of aggregates this sm talks to
-           aggregates_file = server_basedir + os.sep + 'aggregates'
-           self.load_aggregates(aggregates_file) 
-           self.components_file = os.sep.join([server_basedir, 'components', 'slicemgr.' + hrn + '.comp'])
-           self.slices_file = os.sep.join([server_basedir, 'components', 'slicemgr' + hrn + '.slices'])
-           self.timestamp_file = os.sep.join([server_basedir, 'components', 'slicemgr' + hrn + '.timestamp']) 
-           self.components_ttl = components_ttl
-           self.policy['whitelist'] = []
+        self.hrn = conf.GENI_INTERFACE_HRN
+    
+        # Get list of aggregates this sm talks to
+        aggregates_file = server_basedir + os.sep + 'aggregates'
+        self.load_aggregates(aggregates_file) 
+        self.components_file = os.sep.join([server_basedir, 'components', 'slicemgr.' + hrn + '.comp'])
+        self.slices_file = os.sep.join([server_basedir, 'components', 'slicemgr' + hrn + '.slices'])
+        self.timestamp_file = os.sep.join([server_basedir, 'components', 'slicemgr' + hrn + '.timestamp']) 
+        self.components_ttl = components_ttl
+        self.policy['whitelist'] = []
         self.policy['blacklist'] = []
-           self.connect()
+        self.connect()
 
     def load_aggregates(self, aggregates_file):
-           """
-           Get info about the aggregates available to us from file and create 
+        """
+        Get info about the aggregates available to us from file and create 
         an xmlrpc connection to each. If any info is invalid, skip it. 
-           """
-           lines = []
+        """
+        lines = []
         try:
-               f = open(aggregates_file, 'r')
-               lines = f.readlines()
-               f.close()
-           except: raise 
-       
-           for line in lines:
-               # Skip comments
-               if line.strip.startswith("#"):
-                       continue
-               agg_info = line.split("\t").split(" ")
-           
-               # skip invalid info
-               if len(agg_info) != 3:
-                       continue
-
-               # create xmlrpc connection using GeniClient
-               hrn, address, port = agg_info[0], agg_info[1], agg_info[2]
-               url = 'https://%(address)s:%(port)s' % locals()
-               self.aggregates[hrn] = GeniClient(url, self.key_file, self.cert_file)
+            f = open(aggregates_file, 'r')
+            lines = f.readlines()
+            f.close()
+        except: raise 
+    
+        for line in lines:
+            # Skip comments
+            if line.strip.startswith("#"):
+                continue
+            agg_info = line.split("\t").split(" ")
+        
+            # skip invalid info
+            if len(agg_info) != 3:
+                continue
+
+            # create xmlrpc connection using GeniClient
+            hrn, address, port = agg_info[0], agg_info[1], agg_info[2]
+            url = 'https://%(address)s:%(port)s' % locals()
+            self.aggregates[hrn] = GeniClient(url, self.key_file, self.cert_file)
 
 
     def item_hrns(self, items):
-           """
-           Take a list of items (components or slices) and return a dictionary where
-           the key is the authoritative hrn and the value is a list of items at that 
-           hrn.
-           """
-           item_hrns = {}
-           agg_hrns = self.aggregates.keys()
-           for agg_hrn in agg_hrns:
-               item_hrns[agg_hrn] = []
-           for item in items:
-               for agg_hrn in agg_hrns:
-                       if item.startswith(agg_hrn):
-                           item_hrns[agg_hrn] = item
-
-           return item_hrns    
-                       
+        """
+        Take a list of items (components or slices) and return a dictionary where
+        the key is the authoritative hrn and the value is a list of items at that 
+        hrn.
+        """
+        item_hrns = {}
+        agg_hrns = self.aggregates.keys()
+        for agg_hrn in agg_hrns:
+            item_hrns[agg_hrn] = []
+        for item in items:
+            for agg_hrn in agg_hrns:
+                if item.startswith(agg_hrn):
+                    item_hrns[agg_hrn] = item
+
+        return item_hrns    
+             
 
     def hostname_to_hrn(self, login_base, hostname):
-           """
-           Convert hrn to plantelab name.
-           """
+        """
+        Convert hrn to plantelab name.
+        """
         genihostname = "_".join(hostname.split("."))
         return ".".join([self.hrn, login_base, genihostname])
 
     def slicename_to_hrn(self, slicename):
-           """
-           Convert hrn to planetlab name.
-           """
+        """
+        Convert hrn to planetlab name.
+        """
         slicename = slicename.replace("_", ".")
         return ".".join([self.hrn, slicename])
 
     def refresh_components(self):
-           """
-           Update the cached list of nodes.
-           """
-           print "refreshing"
-       
-           aggregates = self.aggregates.keys()
-           all_nodes = []
-           all_slices = []
-           for aggregate in aggregates:
-               try:
-                       # resolve components hostnames
-                   nodes = self.aggregates[aggregate].get_components()
-                       all_nodes.extend(nodes) 
-                       # update timestamp and threshold
-                       self.timestamp = datetime.datetime.now()
-                       delta = datetime.timedelta(hours=self.components_ttl)
-                       self.threshold = self.timestamp + delta 
-               except:
-                   # XX print out to some error log
-                   pass        
+        """
+        Update the cached list of nodes.
+        """
+        print "refreshing"
+    
+        aggregates = self.aggregates.keys()
+        all_nodes = []
+        all_slices = []
+        for aggregate in aggregates:
+            try:
+                # resolve components hostnames
+                nodes = self.aggregates[aggregate].get_components()
+                all_nodes.extend(nodes)    
+                # update timestamp and threshold
+                self.timestamp = datetime.datetime.now()
+                delta = datetime.timedelta(hours=self.components_ttl)
+                self.threshold = self.timestamp + delta 
+            except:
+                # XX print out to some error log
+                pass    
    
-           self.components = all_nodes
-           f = open(self.components_file, 'w')
-           f.write(str(self.components))
-           f.close()
-           f = open(self.timestamp_file, 'w')
-           f.write(str(self.threshold))
-           f.close()
+        self.components = all_nodes
+        f = open(self.components_file, 'w')
+        f.write(str(self.components))
+        f.close()
+        f = open(self.timestamp_file, 'w')
+        f.write(str(self.threshold))
+        f.close()
  
     def load_components(self):
-           """
-           Read cached list of nodes and slices.
-           """
-           print "loading nodes"
-           # Read component list from cached file 
-           if os.path.exists(self.components_file):
-               f = open(self.components_file, 'r')
-               self.components = eval(f.read())
-               f.close()
-       
-           time_format = "%Y-%m-%d %H:%M:%S"
-           if os.path.exists(self.timestamp_file):
-               f = open(self.timestamp_file, 'r')
-               timestamp = str(f.read()).split(".")[0]
-               self.timestamp = datetime.datetime.fromtimestamp(time.mktime(time.strptime(timestamp, time_format)))
-               delta = datetime.timedelta(hours=self.components_ttl)
+        """
+        Read cached list of nodes and slices.
+        """
+        print "loading nodes"
+        # Read component list from cached file 
+        if os.path.exists(self.components_file):
+            f = open(self.components_file, 'r')
+            self.components = eval(f.read())
+            f.close()
+    
+        time_format = "%Y-%m-%d %H:%M:%S"
+        if os.path.exists(self.timestamp_file):
+            f = open(self.timestamp_file, 'r')
+            timestamp = str(f.read()).split(".")[0]
+            self.timestamp = datetime.datetime.fromtimestamp(time.mktime(time.strptime(timestamp, time_format)))
+            delta = datetime.timedelta(hours=self.components_ttl)
             self.threshold = self.timestamp + delta
-               f.close()
+            f.close()
 
     def load_policy(self):
         """
@@ -193,14 +193,14 @@ class SliceMgr(GeniServer):
         self.policy['blacklist'] = blacklist
  
     def load_slices(self):
-           """
-           Read current slice instantiation states.
-           """
-           print "loading slices"
-           if os.path.exists(self.slices_file):
+        """
+         Read current slice instantiation states.
+        """
+        print "loading slices"
+        if os.path.exists(self.slices_file):
             f = open(self.components_file, 'r')
             self.slices = eval(f.read())
-            f.close()  
+            f.close()    
 
     def write_slices(self):
         """
@@ -213,127 +213,127 @@ class SliceMgr(GeniServer):
 
 
     def get_components(self):
-           """
-           Return a list of components managed by this slice manager.
-           """
-           # Reload components list
-           now = datetime.datetime.now()
-           #self.load_components()
-           if not self.threshold or not self.timestamp or now > self.threshold:
-               self.refresh_components()
-           elif now < self.threshold and not self.components: 
-               self.load_components()
-           return self.components
+        """
+        Return a list of components managed by this slice manager.
+        """
+        # Reload components list
+        now = datetime.datetime.now()
+        #self.load_components()
+        if not self.threshold or not self.timestamp or now > self.threshold:
+            self.refresh_components()
+        elif now < self.threshold and not self.components: 
+            self.load_components()
+        return self.components
    
      
     def get_slices(self):
-           """
-           Return a list of instnatiated managed by this slice manager.
-           """
-           now = datetime.datetime.now()
-           #self.load_components()
-           if not self.threshold or not self.timestamp or now > self.threshold:
-               self.refresh_components()
-           elif now < self.threshold and not self.slices:
-               self.load_components()
-           return self.slices
+        """
+        Return a list of instnatiated managed by this slice manager.
+        """
+        now = datetime.datetime.now()
+        #self.load_components()
+        if not self.threshold or not self.timestamp or now > self.threshold:
+            self.refresh_components()
+        elif now < self.threshold and not self.slices:
+            self.load_components()
+        return self.slices
 
     def get_slivers(self, hrn):
-           """
-           Return the list of slices instantiated at the specified component.
-           """
+        """
+        Return the list of slices instantiated at the specified component.
+        """
 
-           # hrn is assumed to be a component hrn
-           if hrn not in self.slices:
-               raise RecordNotFound(hrn)
-       
-           return self.slices[hrn]
+        # hrn is assumed to be a component hrn
+        if hrn not in self.slices:
+            raise RecordNotFound(hrn)
+    
+        return self.slices[hrn]
 
     def get_rspec(self, hrn, type):
-           #rspec = Rspec()
-           if type in ['node']:
-               nodes = self.shell.GetNodes(self.auth)
-           elif type in ['slice']:
-               slices = self.shell.GetSlices(self.auth)
-           elif type in ['aggregate']:
-               pass
+        #rspec = Rspec()
+        if type in ['node']:
+            nodes = self.shell.GetNodes(self.auth)
+        elif type in ['slice']:
+            slices = self.shell.GetSlices(self.auth)
+        elif type in ['aggregate']:
+            pass
 
     def get_resources(self, slice_hrn):
-           """
-           Return the current rspec for the specified slice.
-           """
-           slicename = hrn_to_plcslicename(slice_hrn)
-           rspec = self.get_rspec(slicenamem, 'slice' )
+        """
+        Return the current rspec for the specified slice.
+        """
+        slicename = hrn_to_plcslicename(slice_hrn)
+        rspec = self.get_rspec(slicenamem, 'slice' )
         
-           return rspec
+        return rspec
  
     def create_slice(self, slice_hrn, rspec, attributes):
-           """
-           Instantiate the specified slice according to whats defined in the rspec.
-           """
-           slicename = self.hrn_to_plcslicename(slice_hrn)
-           #spec = Rspec(rspec)
-           node_hrns = []
-           #for netspec in spec['networks]:
-           #    networkname = netspec['name']
-           #    nodespec = spec['networks']['nodes']
-           #    nodes = [nspec['name'] for nspec in nodespec]
-           #    node_hrns = [networkname + node for node in nodes]
-           #    
-           self.db.AddSliceToNodes(slice_hrn, node_hrns)
-           return 1
-       
+        """
+        Instantiate the specified slice according to whats defined in the rspec.
+        """
+        slicename = self.hrn_to_plcslicename(slice_hrn)
+        #spec = Rspec(rspec)
+        node_hrns = []
+        #for netspec in spec['networks]:
+        #    networkname = netspec['name']
+        #    nodespec = spec['networks']['nodes']
+        #    nodes = [nspec['name'] for nspec in nodespec]
+        #    node_hrns = [networkname + node for node in nodes]
+        #    
+        self.db.AddSliceToNodes(slice_hrn, node_hrns)
+        return 1
+    
     def delete_slice_(self, slice_hrn):
-           """
-           Remove this slice from all components it was previouly associated with and 
-           free up the resources it was using.
-           """
-           self.db.DeleteSliceFromNodes(self.auth, slicename, self.components)
-           return 1
+        """
+        Remove this slice from all components it was previouly associated with and 
+        free up the resources it was using.
+        """
+        self.db.DeleteSliceFromNodes(self.auth, slicename, self.components)
+        return 1
 
     def start_slice(self, slice_hrn):
-           """
-           Stop the slice at plc.
-           """
-           slicename = hrn_to_plcslicename(slice_hrn)
-           slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
-           if not slices:
-               raise RecordNotFound(slice_hrn)
-           slice_id = slices[0]
-           atrribtes = self.shell.GetSliceAttributes({'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
-           attribute_id = attreibutes[0] 
-           self.shell.UpdateSliceAttribute(self.auth, attribute_id, "1" )
-           return 1
+        """
+        Stop the slice at plc.
+        """
+        slicename = hrn_to_plcslicename(slice_hrn)
+        slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
+        if not slices:
+            raise RecordNotFound(slice_hrn)
+        slice_id = slices[0]
+        atrribtes = self.shell.GetSliceAttributes({'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
+        attribute_id = attreibutes[0] 
+        self.shell.UpdateSliceAttribute(self.auth, attribute_id, "1" )
+        return 1
 
     def stop_slice(self, slice_hrn):
-           """
-           Stop the slice at plc
-           """
-           slicename = hrn_to_plcslicename(slice_hrn)
-           slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
+        """
+        Stop the slice at plc
+        """
+        slicename = hrn_to_plcslicename(slice_hrn)
+        slices = self.shell.GetSlices(self.auth, {'name': slicename}, ['slice_id'])
         if not slices:
             raise RecordNotFound(slice_hrn)
         slice_id = slices[0]
         atrribtes = self.shell.GetSliceAttributes({'slice_id': slice_id, 'name': 'enabled'}, ['slice_attribute_id'])
         attribute_id = attreibutes[0]
-           self.shell.UpdateSliceAttribute(self.auth, attribute_id, "0")
-           return 1
+        self.shell.UpdateSliceAttribute(self.auth, attribute_id, "0")
+        return 1
 
     def reset_slice(self, slice_hrn):
-           """
-           Reset the slice
-           """
-           slicename = self.hrn_to_plcslicename(slice_hrn)
-           return 1
+        """
+        Reset the slice
+        """
+        slicename = self.hrn_to_plcslicename(slice_hrn)
+        return 1
 
     def get_policy(self):
-           """
-           Return the policy of this slice manager.
-           """
-       
-           return self.policy
-       
-       
+        """
+        Return the policy of this slice manager.
+        """
+    
+        return self.policy
+        
+    
 
 ##############################
 ## Server methods here for now
@@ -390,4 +390,4 @@ class SliceMgr(GeniServer):
         self.server.register_function(self.stop)
         self.server.register_function(self.reset)
         self.server.register_function(self.policy)
-               
+