Cleaning and comenting.
authorSandrine Avakian <sandrine.avakian@inria.fr>
Thu, 8 Aug 2013 15:27:05 +0000 (17:27 +0200)
committerSandrine Avakian <sandrine.avakian@inria.fr>
Thu, 8 Aug 2013 15:27:05 +0000 (17:27 +0200)
sfa/importer/iotlabimporter.py

index 0817dad..3212de0 100644 (file)
@@ -1,20 +1,24 @@
+""" File defining the importer class and all the methods needed to import
+the nodes, users and slices from OAR and LDAP to the SFA database.
+Also creates the iotlab specific databse and table to keep track
+of which slice hrn contains which job.
+"""
 from sfa.util.config import Config
 from sfa.util.xrn import Xrn, get_authority, hrn_to_urn
 
 from sfa.iotlab.iotlabdriver import IotlabDriver
 from sfa.util.config import Config
 from sfa.util.xrn import Xrn, get_authority, hrn_to_urn
 
 from sfa.iotlab.iotlabdriver import IotlabDriver
-from sfa.iotlab.iotlabpostgres import IotlabDB, Iotlab_xp
+from sfa.iotlab.iotlabpostgres import IotlabDB
 from sfa.trust.certificate import Keypair, convert_public_key
 from sfa.trust.gid import create_uuid
 
 from sfa.storage.alchemy import dbsession
 from sfa.storage.model import RegRecord, RegAuthority, RegSlice, RegNode, \
 from sfa.trust.certificate import Keypair, convert_public_key
 from sfa.trust.gid import create_uuid
 
 from sfa.storage.alchemy import dbsession
 from sfa.storage.model import RegRecord, RegAuthority, RegSlice, RegNode, \
-                                                    RegUser, RegKey
+    RegUser, RegKey
 
 
 from sqlalchemy.exc import SQLAlchemyError
 
 
 
 
 from sqlalchemy.exc import SQLAlchemyError
 
 
-
 class IotlabImporter:
     """
     IotlabImporter class, generic importer_class. Used to populate the SFA DB
 class IotlabImporter:
     """
     IotlabImporter class, generic importer_class. Used to populate the SFA DB
@@ -23,11 +27,11 @@ class IotlabImporter:
     or deleted.
     """
 
     or deleted.
     """
 
-    def __init__ (self, auth_hierarchy, loc_logger):
+    def __init__(self, auth_hierarchy, loc_logger):
         """
         Sets and defines import logger and the authority name. Gathers all the
         """
         Sets and defines import logger and the authority name. Gathers all the
-        records already registerd in the SFA DB, broke them into 3 dicts,
-        by type and hrn, by email and by type and pointer.
+        records already registerd in the SFA DB, broke them into 3 dicts, by
+        type and hrn, by email and by type and pointer.
 
         :param auth_hierarchy: authority name
         :type auth_hierarchy: string
 
         :param auth_hierarchy: authority name
         :type auth_hierarchy: string
@@ -48,26 +52,25 @@ class IotlabImporter:
         #create hash by (type,hrn)
         #used  to know if a given record is already known to SFA
         self.records_by_type_hrn = \
         #create hash by (type,hrn)
         #used  to know if a given record is already known to SFA
         self.records_by_type_hrn = \
-            dict([( (record.type,record.hrn), record) \
-                                        for record in self.all_records])
+            dict([((record.type, record.hrn), record)
+                 for record in self.all_records])
 
         self.users_rec_by_email = \
 
         self.users_rec_by_email = \
-            dict([ (record.email, record) \
-                for record in self.all_records if record.type == 'user'])
+            dict([(record.email, record)
+                 for record in self.all_records if record.type == 'user'])
 
         # create hash by (type,pointer)
         self.records_by_type_pointer = \
 
         # create hash by (type,pointer)
         self.records_by_type_pointer = \
-            dict([ ( (str(record.type), record.pointer) , record) \
-                for record in self.all_records  if record.pointer != -1])
-
+            dict([((str(record.type), record.pointer), record)
+                  for record in self.all_records if record.pointer != -1])
 
 
     @staticmethod
     def hostname_to_hrn_escaped(root_auth, hostname):
         """
 
 
 
     @staticmethod
     def hostname_to_hrn_escaped(root_auth, hostname):
         """
 
-        Returns a node's hrn based on its hostname and the root
-        authority and by removing special caracters from the hostname.
+        Returns a node's hrn based on its hostname and the root authority and by
+        removing special caracters from the hostname.
 
         :param root_auth: root authority name
         :param hostname: nodes's hostname
 
         :param root_auth: root authority name
         :param hostname: nodes's hostname
@@ -75,7 +78,7 @@ class IotlabImporter:
         :type hostname: string
         :rtype: string
         """
         :type hostname: string
         :rtype: string
         """
-        return '.'.join( [root_auth, Xrn.escape(hostname)] )
+        return '.'.join([root_auth, Xrn.escape(hostname)])
 
 
     @staticmethod
 
 
     @staticmethod
@@ -88,29 +91,33 @@ class IotlabImporter:
         :type person_hrn: string
         :rtype: string
         """
         :type person_hrn: string
         :rtype: string
         """
-        return  (person_hrn +'_slice')
+        return (person_hrn + '_slice')
 
 
-    def add_options (self, parser):
+    def add_options(self, parser):
+        """
+        .. warning:: not used
+        """
         # we don't have any options for now
         pass
 
     def find_record_by_type_hrn(self, record_type, hrn):
         """
         # we don't have any options for now
         pass
 
     def find_record_by_type_hrn(self, record_type, hrn):
         """
-
-        Returns the record associated with a given hrn and hrn type.
-        Returns None if the key tuple is not in dictionary.
+        Finds the record associated with the hrn and its type given in parameter
+        if the tuple (hrn, type hrn) is an existing key in the dictionary.
 
         :param record_type: the record's type (slice, node, authority...)
         :type  record_type: string
         :param hrn: Human readable name of the object's record
         :type hrn: string
 
         :param record_type: the record's type (slice, node, authority...)
         :type  record_type: string
         :param hrn: Human readable name of the object's record
         :type hrn: string
-        :rtype: RegUser if user, RegSlice if slice, RegNode if node...
-                or None if record does not exist.
+        :returns: Returns the record associated with a given hrn and hrn type.
+            Returns None if the key tuple is not in the dictionary.
+        :rtype: RegUser if user, RegSlice if slice, RegNode if node...or None if
+            record does not exist.
 
         """
 
         """
-        return self.records_by_type_hrn.get ( (record_type, hrn), None)
+        return self.records_by_type_hrn.get((record_type, hrn), None)
 
 
-    def locate_by_type_pointer (self, record_type, pointer):
+    def locate_by_type_pointer(self, record_type, pointer):
         """
 
         Returns the record corresponding to the key pointer and record
         """
 
         Returns the record corresponding to the key pointer and record
@@ -120,15 +127,15 @@ class IotlabImporter:
         :param record_type: the record's type (slice, node, authority...)
         :type  record_type: string
         :param pointer:Pointer to where the record is in the origin db,
         :param record_type: the record's type (slice, node, authority...)
         :type  record_type: string
         :param pointer:Pointer to where the record is in the origin db,
-        used in case the record comes from a trusted authority.
+            used in case the record comes from a trusted authority.
         :type pointer: integer
         :rtype: RegUser if user, RegSlice if slice, RegNode if node...
         :type pointer: integer
         :rtype: RegUser if user, RegSlice if slice, RegNode if node...
-                or None if record does not exist.
+            or None if record does not exist.
         """
         """
-        return self.records_by_type_pointer.get ( (record_type, pointer), None)
+        return self.records_by_type_pointer.get((record_type, pointer), None)
 
 
 
 
-    def update_just_added_records_dict (self, record):
+    def update_just_added_records_dict(self, record):
         """
 
         Updates the records_by_type_hrn dictionnary if the record has
         """
 
         Updates the records_by_type_hrn dictionnary if the record has
@@ -139,10 +146,10 @@ class IotlabImporter:
         """
         rec_tuple = (record.type, record.hrn)
         if rec_tuple in self.records_by_type_hrn:
         """
         rec_tuple = (record.type, record.hrn)
         if rec_tuple in self.records_by_type_hrn:
-            self.logger.warning ("IotlabImporter.update_just_added_records_dict:\
-                        duplicate (%s,%s)"%rec_tuple)
+            self.logger.warning("IotlabImporter.update_just_added_records_dict:\
+                        duplicate (%s,%s)" % rec_tuple)
             return
             return
-        self.records_by_type_hrn [ rec_tuple ] = record
+        self.records_by_type_hrn[rec_tuple] = record
 
     def import_sites_and_nodes(self, iotlabdriver):
         """
 
     def import_sites_and_nodes(self, iotlabdriver):
         """
@@ -152,13 +159,13 @@ class IotlabImporter:
         For each site, import the site's nodes to the DB by calling
         import_nodes.
 
         For each site, import the site's nodes to the DB by calling
         import_nodes.
 
-        :param iotlabdriver: IotlabDriver object, used to have access to iotlabdriver
-        methods and fetching info on sites and nodes.
+        :param iotlabdriver: IotlabDriver object, used to have access to
+            iotlabdriver methods and fetching info on sites and nodes.
         :type iotlabdriver: IotlabDriver
         """
 
         :type iotlabdriver: IotlabDriver
         """
 
-        sites_listdict  = iotlabdriver.iotlab_api.GetSites()
-        nodes_listdict  = iotlabdriver.iotlab_api.GetNodes()
+        sites_listdict = iotlabdriver.iotlab_api.GetSites()
+        nodes_listdict = iotlabdriver.iotlab_api.GetNodes()
         nodes_by_id = dict([(node['node_id'], node) for node in nodes_listdict])
         for site in sites_listdict:
             site_hrn = site['name']
         nodes_by_id = dict([(node['node_id'], node) for node in nodes_listdict])
         for site in sites_listdict:
             site_hrn = site['name']
@@ -170,28 +177,28 @@ class IotlabImporter:
                         self.auth_hierarchy.create_auth(urn)
 
                     auth_info = self.auth_hierarchy.get_auth_info(urn)
                         self.auth_hierarchy.create_auth(urn)
 
                     auth_info = self.auth_hierarchy.get_auth_info(urn)
-                    site_record = RegAuthority(hrn=site_hrn, \
-                                               gid=auth_info.get_gid_object(),
-                                               pointer='-1',
-                                               authority=get_authority(site_hrn))
+                    site_record = \
+                        RegAuthority(hrn=site_hrn,
+                                     gid=auth_info.get_gid_object(),
+                                     pointer='-1',
+                                     authority=get_authority(site_hrn))
                     site_record.just_created()
                     dbsession.add(site_record)
                     dbsession.commit()
                     site_record.just_created()
                     dbsession.add(site_record)
                     dbsession.commit()
-                    self.logger.info("IotlabImporter: imported authority (site) \
-                         %s" % site_record)
+                    self.logger.info("IotlabImporter: imported authority \
+                                    (site) %s" % site_record)
                     self.update_just_added_records_dict(site_record)
                 except SQLAlchemyError:
                     # if the site import fails then there is no point in
                     # trying to import the
                     # site's child records(node, slices, persons), so skip them.
                     self.update_just_added_records_dict(site_record)
                 except SQLAlchemyError:
                     # if the site import fails then there is no point in
                     # trying to import the
                     # site's child records(node, slices, persons), so skip them.
-                    self.logger.log_exc("IotlabImporter: failed to import site. \
-                        Skipping child records")
+                    self.logger.log_exc("IotlabImporter: failed to import \
+                        site. Skipping child records")
                     continue
             else:
                 # xxx update the record ...
                 pass
 
                     continue
             else:
                 # xxx update the record ...
                 pass
 
-
             site_record.stale = False
             self.import_nodes(site['node_ids'], nodes_by_id, iotlabdriver)
 
             site_record.stale = False
             self.import_nodes(site['node_ids'], nodes_by_id, iotlabdriver)
 
@@ -210,8 +217,8 @@ class IotlabImporter:
         :param nodes_by_id: dictionary , key is the node id, value is the a dict
         with node information.
         :type nodes_by_id: dictionary
         :param nodes_by_id: dictionary , key is the node id, value is the a dict
         with node information.
         :type nodes_by_id: dictionary
-        :param iotlabdriver:IotlabDriver object, used to have access to iotlabdriver
-        attributes.
+        :param iotlabdriver:IotlabDriver object, used to have access to
+            iotlabdriver attributes.
         :type iotlabdriver:IotlabDriver
 
         """
         :type iotlabdriver:IotlabDriver
 
         """
@@ -220,51 +227,55 @@ class IotlabImporter:
             try:
                 node = nodes_by_id[node_id]
             except KeyError:
             try:
                 node = nodes_by_id[node_id]
             except KeyError:
-                self.logger.warning ("IotlabImporter: cannot find node_id %s \
-                        - ignored" %(node_id))
+                self.logger.warning("IotlabImporter: cannot find node_id %s \
+                        - ignored" % (node_id))
                 continue
             escaped_hrn =  \
                 continue
             escaped_hrn =  \
-            self.hostname_to_hrn_escaped(iotlabdriver.iotlab_api.root_auth, \
-            node['hostname'])
-            self.logger.info("IOTLABIMPORTER node %s " %(node))
-            hrn =  node['hrn']
-
+                self.hostname_to_hrn_escaped(iotlabdriver.iotlab_api.root_auth,
+                                             node['hostname'])
+            self.logger.info("IOTLABIMPORTER node %s " % (node))
+            hrn = node['hrn']
 
             # xxx this sounds suspicious
             if len(hrn) > 64:
                 hrn = hrn[:64]
 
             # xxx this sounds suspicious
             if len(hrn) > 64:
                 hrn = hrn[:64]
-            node_record = self.find_record_by_type_hrn( 'node', hrn )
+            node_record = self.find_record_by_type_hrn('node', hrn)
             if not node_record:
                 pkey = Keypair(create=True)
                 urn = hrn_to_urn(escaped_hrn, 'node')
                 node_gid = \
             if not node_record:
                 pkey = Keypair(create=True)
                 urn = hrn_to_urn(escaped_hrn, 'node')
                 node_gid = \
-                    self.auth_hierarchy.create_gid(urn, \
-                    create_uuid(), pkey)
+                    self.auth_hierarchy.create_gid(urn, create_uuid(), pkey)
 
                 def iotlab_get_authority(hrn):
 
                 def iotlab_get_authority(hrn):
+                    """ Gets the authority part in the hrn.
+                    :param hrn: hrn whose authority we are looking for.
+                    :type hrn: string
+                    :returns: splits the hrn using the '.' separator and returns
+                        the authority part of the hrn.
+                    :rtype: string
+
+                    """
                     return hrn.split(".")[0]
 
                 node_record = RegNode(hrn=hrn, gid=node_gid,
                     return hrn.split(".")[0]
 
                 node_record = RegNode(hrn=hrn, gid=node_gid,
-                                    pointer = '-1',
-                                    authority=iotlab_get_authority(hrn))
+                                      pointer='-1',
+                                      authority=iotlab_get_authority(hrn))
                 try:
 
                     node_record.just_created()
                     dbsession.add(node_record)
                     dbsession.commit()
                 try:
 
                     node_record.just_created()
                     dbsession.add(node_record)
                     dbsession.commit()
-                    self.logger.info("IotlabImporter: imported node: %s" \
-                                % node_record)
+                    self.logger.info("IotlabImporter: imported node: %s"
+                                     % node_record)
                     self.update_just_added_records_dict(node_record)
                 except SQLAlchemyError:
                     self.update_just_added_records_dict(node_record)
                 except SQLAlchemyError:
-                    self.logger.log_exc("IotlabImporter: \
-                                    failed to import node")
+                    self.logger.log_exc("IotlabImporter: failed to import node")
             else:
                 #TODO:  xxx update the record ...
                 pass
             node_record.stale = False
 
             else:
                 #TODO:  xxx update the record ...
                 pass
             node_record.stale = False
 
-
-    def init_person_key (self, person, iotlab_key):
+    def init_person_key(self, person, iotlab_key):
         """
 
         Returns a tuple pubkey and pkey.
         """
 
         Returns a tuple pubkey and pkey.
@@ -272,12 +283,13 @@ class IotlabImporter:
         :param person Person's data.
         :type person: dict
         :param iotlab_key: SSH public key, from LDAP user's data.
         :param person Person's data.
         :type person: dict
         :param iotlab_key: SSH public key, from LDAP user's data.
-        RSA type supported.
+            RSA type supported.
         :type iotlab_key: string
         :rtype (string, Keypair)
         :type iotlab_key: string
         :rtype (string, Keypair)
+
         """
         pubkey = None
         """
         pubkey = None
-        if  person['pkey']:
+        if person['pkey']:
             # randomly pick first key in set
             pubkey = iotlab_key
 
             # randomly pick first key in set
             pubkey = iotlab_key
 
@@ -285,20 +297,19 @@ class IotlabImporter:
                 pkey = convert_public_key(pubkey)
             except TypeError:
                 #key not good. create another pkey
                 pkey = convert_public_key(pubkey)
             except TypeError:
                 #key not good. create another pkey
-                self.logger.warn('IotlabImporter: \
+                self.logger.warn("IotlabImporter: \
                                     unable to convert public \
                                     unable to convert public \
-                                    key for %s' %person['hrn'])
+                                    key for %s" % person['hrn'])
                 pkey = Keypair(create=True)
 
         else:
             # the user has no keys.
             #Creating a random keypair for the user's gid
             self.logger.warn("IotlabImporter: person %s does not have a  \
                 pkey = Keypair(create=True)
 
         else:
             # the user has no keys.
             #Creating a random keypair for the user's gid
             self.logger.warn("IotlabImporter: person %s does not have a  \
-                        public key" %(person['hrn']))
+                        public key" % (person['hrn']))
             pkey = Keypair(create=True)
         return (pubkey, pkey)
 
             pkey = Keypair(create=True)
         return (pubkey, pkey)
 
-
     def import_persons_and_slices(self, iotlabdriver):
         """
 
     def import_persons_and_slices(self, iotlabdriver):
         """
 
@@ -310,18 +321,18 @@ class IotlabImporter:
         import the user's slice onto the database as well by calling
         import_slice.
 
         import the user's slice onto the database as well by calling
         import_slice.
 
-        :param iotlabdriver:IotlabDriver object, used to have access to iotlabdriver
-        attributes.
+        :param iotlabdriver:IotlabDriver object, used to have access to
+            iotlabdriver attributes.
         :type iotlabdriver:IotlabDriver
         """
         ldap_person_listdict = iotlabdriver.iotlab_api.GetPersons()
         :type iotlabdriver:IotlabDriver
         """
         ldap_person_listdict = iotlabdriver.iotlab_api.GetPersons()
-        self.logger.info("IOTLABIMPORT \t ldap_person_listdict %s \r\n" \
-                %(ldap_person_listdict))
+        self.logger.info("IOTLABIMPORT \t ldap_person_listdict %s \r\n"
+                         % (ldap_person_listdict))
 
          # import persons
 
          # import persons
-        for person in ldap_person_listdict :
+        for person in ldap_person_listdict:
 
 
-            self.logger.info("IotlabImporter: person :" %(person))
+            self.logger.info("IotlabImporter: person :" % (person))
             if 'ssh-rsa' not in person['pkey']:
                 #people with invalid ssh key (ssh-dss, empty, bullshit keys...)
                 #won't be imported
             if 'ssh-rsa' not in person['pkey']:
                 #people with invalid ssh key (ssh-dss, empty, bullshit keys...)
                 #won't be imported
@@ -335,8 +346,8 @@ class IotlabImporter:
             person_urn = hrn_to_urn(person_hrn, 'user')
 
 
             person_urn = hrn_to_urn(person_hrn, 'user')
 
 
-            self.logger.info("IotlabImporter: users_rec_by_email %s " \
-                                            %(self.users_rec_by_email))
+            self.logger.info("IotlabImporter: users_rec_by_email %s "
+                             (self.users_rec_by_email))
 
             #Check if user using person['email'] from LDAP is already registered
             #in SFA. One email = one person. In this case, do not create another
 
             #Check if user using person['email'] from LDAP is already registered
             #in SFA. One email = one person. In this case, do not create another
@@ -345,54 +356,56 @@ class IotlabImporter:
             #uid ldap
             user_record = self.find_record_by_type_hrn('user', person_hrn)
 
             #uid ldap
             user_record = self.find_record_by_type_hrn('user', person_hrn)
 
-            if not user_record and  person['email'] in self.users_rec_by_email:
+            if not user_record and person['email'] in self.users_rec_by_email:
                 user_record = self.users_rec_by_email[person['email']]
                 person_hrn = user_record.hrn
                 person_urn = hrn_to_urn(person_hrn, 'user')
 
 
                 user_record = self.users_rec_by_email[person['email']]
                 person_hrn = user_record.hrn
                 person_urn = hrn_to_urn(person_hrn, 'user')
 
 
-            slice_record = self.find_record_by_type_hrn ('slice', slice_hrn)
+            slice_record = self.find_record_by_type_hrn('slice', slice_hrn)
 
             iotlab_key = person['pkey']
             # new person
             if not user_record:
                 (pubkey, pkey) = self.init_person_key(person, iotlab_key)
 
             iotlab_key = person['pkey']
             # new person
             if not user_record:
                 (pubkey, pkey) = self.init_person_key(person, iotlab_key)
-                if pubkey is not None and pkey is not None :
+                if pubkey is not None and pkey is not None:
                     person_gid = \
                     person_gid = \
-                    self.auth_hierarchy.create_gid(person_urn, \
-                    create_uuid(), pkey)
+                        self.auth_hierarchy.create_gid(person_urn,
+                                                       create_uuid(), pkey)
                     if person['email']:
                     if person['email']:
-                        self.logger.debug( "IOTLAB IMPORTER \
-                            PERSON EMAIL OK email %s " %(person['email']))
+                        self.logger.debug("IOTLAB IMPORTER \
+                            PERSON EMAIL OK email %s " % (person['email']))
                         person_gid.set_email(person['email'])
                         person_gid.set_email(person['email'])
-                        user_record = RegUser(hrn=person_hrn, \
-                                            gid=person_gid,
-                                            pointer='-1',
-                                            authority=get_authority(person_hrn),
-                                            email=person['email'])
+                        user_record = \
+                            RegUser(hrn=person_hrn,
+                                    gid=person_gid,
+                                    pointer='-1',
+                                    authority=get_authority(person_hrn),
+                                    email=person['email'])
                     else:
                     else:
-                        user_record = RegUser(hrn=person_hrn, \
-                                            gid=person_gid,
-                                            pointer='-1',
-                                            authority=get_authority(person_hrn))
+                        user_record = \
+                            RegUser(hrn=person_hrn,
+                                    gid=person_gid,
+                                    pointer='-1',
+                                    authority=get_authority(person_hrn))
 
                     if pubkey:
                         user_record.reg_keys = [RegKey(pubkey)]
                     else:
 
                     if pubkey:
                         user_record.reg_keys = [RegKey(pubkey)]
                     else:
-                        self.logger.warning("No key found for user %s" \
-                        %(user_record))
+                        self.logger.warning("No key found for user %s"
+                                            % (user_record))
 
                         try:
                             user_record.just_created()
                             dbsession.add (user_record)
                             dbsession.commit()
 
                         try:
                             user_record.just_created()
                             dbsession.add (user_record)
                             dbsession.commit()
-                            self.logger.info("IotlabImporter: imported person %s"\
-                            %(user_record))
-                            self.update_just_added_records_dict( user_record )
+                            self.logger.info("IotlabImporter: imported person \
+                                            %s" % (user_record))
+                            self.update_just_added_records_dict(user_record)
 
                         except SQLAlchemyError:
                             self.logger.log_exc("IotlabImporter: \
 
                         except SQLAlchemyError:
                             self.logger.log_exc("IotlabImporter: \
-                                failed to import person  %s"%(person))
+                                failed to import person  %s" % (person))
             else:
                 # update the record ?
                 # if user's primary key has changed then we need to update
             else:
                 # update the record ?
                 # if user's primary key has changed then we need to update
@@ -400,21 +413,21 @@ class IotlabImporter:
                 sfa_keys = user_record.reg_keys
 
                 new_key = False
                 sfa_keys = user_record.reg_keys
 
                 new_key = False
-                if iotlab_key is not sfa_keys :
+                if iotlab_key is not sfa_keys:
                     new_key = True
                 if new_key:
                     self.logger.info("IotlabImporter: \t \t USER UPDATE \
                     new_key = True
                 if new_key:
                     self.logger.info("IotlabImporter: \t \t USER UPDATE \
-                        person: %s" %(person['hrn']))
-                    (pubkey, pkey) = self.init_person_key (person, iotlab_key)
+                        person: %s" % (person['hrn']))
+                    (pubkey, pkey) = self.init_person_key(person, iotlab_key)
                     person_gid = \
                     person_gid = \
-                        self.auth_hierarchy.create_gid(person_urn, \
-                        create_uuid(), pkey)
+                        self.auth_hierarchy.create_gid(person_urn,
+                                                       create_uuid(), pkey)
                     if not pubkey:
                         user_record.reg_keys = []
                     else:
                         user_record.reg_keys = [RegKey(pubkey)]
                     if not pubkey:
                         user_record.reg_keys = []
                     else:
                         user_record.reg_keys = [RegKey(pubkey)]
-                    self.logger.info("IotlabImporter: updated person: %s" \
-                    % (user_record))
+                    self.logger.info("IotlabImporter: updated person: %s"
+                                     % (user_record))
 
                 if person['email']:
                     user_record.email = person['email']
 
                 if person['email']:
                     user_record.email = person['email']
@@ -424,7 +437,7 @@ class IotlabImporter:
                 user_record.stale = False
             except SQLAlchemyError:
                 self.logger.log_exc("IotlabImporter: \
                 user_record.stale = False
             except SQLAlchemyError:
                 self.logger.log_exc("IotlabImporter: \
-                failed to update person  %s"%(person))
+                failed to update person  %s"% (person))
 
             self.import_slice(slice_hrn, slice_record, user_record)
 
 
             self.import_slice(slice_hrn, slice_record, user_record)
 
@@ -447,22 +460,22 @@ class IotlabImporter:
 
         .. todo::Update the record if a slice record already exists.
         """
 
         .. todo::Update the record if a slice record already exists.
         """
-        if not slice_record :
+        if not slice_record:
             pkey = Keypair(create=True)
             urn = hrn_to_urn(slice_hrn, 'slice')
             slice_gid = \
             pkey = Keypair(create=True)
             urn = hrn_to_urn(slice_hrn, 'slice')
             slice_gid = \
-                self.auth_hierarchy.create_gid(urn, \
-                create_uuid(), pkey)
-            slice_record = RegSlice (hrn=slice_hrn, gid=slice_gid,
-                                        pointer='-1',
-                                        authority=get_authority(slice_hrn))
+                self.auth_hierarchy.create_gid(urn,
+                                               create_uuid(), pkey)
+            slice_record = RegSlice(hrn=slice_hrn, gid=slice_gid,
+                                    pointer='-1',
+                                    authority=get_authority(slice_hrn))
             try:
                 slice_record.just_created()
                 dbsession.add(slice_record)
                 dbsession.commit()
 
 
             try:
                 slice_record.just_created()
                 dbsession.add(slice_record)
                 dbsession.commit()
 
 
-                self.update_just_added_records_dict ( slice_record )
+                self.update_just_added_records_dict(slice_record)
 
             except SQLAlchemyError:
                 self.logger.log_exc("IotlabImporter: failed to import slice")
 
             except SQLAlchemyError:
                 self.logger.log_exc("IotlabImporter: failed to import slice")
@@ -470,12 +483,12 @@ class IotlabImporter:
         #No slice update upon import in iotlab
         else:
             # xxx update the record ...
         #No slice update upon import in iotlab
         else:
             # xxx update the record ...
-            self.logger.warning ("Slice update not yet implemented")
+            self.logger.warning("Slice update not yet implemented")
             pass
         # record current users affiliated with the slice
 
 
             pass
         # record current users affiliated with the slice
 
 
-        slice_record.reg_researchers =  [user_record]
+        slice_record.reg_researchers = [user_record]
         try:
             dbsession.commit()
             slice_record.stale = False
         try:
             dbsession.commit()
             slice_record.stale = False
@@ -483,7 +496,7 @@ class IotlabImporter:
             self.logger.log_exc("IotlabImporter: failed to update slice")
 
 
             self.logger.log_exc("IotlabImporter: failed to update slice")
 
 
-    def run (self, options):
+    def run(self, options):
         """
         Create the special iotlab table, iotlab_xp, in the iotlab database.
         Import everything (users, slices, nodes and sites from OAR
         """
         Create the special iotlab table, iotlab_xp, in the iotlab database.
         Import everything (users, slices, nodes and sites from OAR
@@ -500,8 +513,7 @@ class IotlabImporter:
 
         if not iotlab_db.exists('iotlab_xp'):
             iotlab_db.createtable()
 
         if not iotlab_db.exists('iotlab_xp'):
             iotlab_db.createtable()
-            self.logger.info ("IotlabImporter.run:  iotlab_xp table created ")
-
+            self.logger.info("IotlabImporter.run:  iotlab_xp table created ")
 
         # import site and node records in site into the SFA db.
         self.import_sites_and_nodes(iotlabdriver)
 
         # import site and node records in site into the SFA db.
         self.import_sites_and_nodes(iotlabdriver)
@@ -510,33 +522,30 @@ class IotlabImporter:
 
          ### remove stale records
         # special records must be preserved
 
          ### remove stale records
         # special records must be preserved
-        system_hrns = [iotlabdriver.hrn, iotlabdriver.iotlab_api.root_auth,  \
-                                        iotlabdriver.hrn+ '.slicemanager']
+        system_hrns = [iotlabdriver.hrn, iotlabdriver.iotlab_api.root_auth,
+                       iotlabdriver.hrn + '.slicemanager']
         for record in self.all_records:
             if record.hrn in system_hrns:
                 record.stale = False
             if record.peer_authority:
                 record.stale = False
 
         for record in self.all_records:
             if record.hrn in system_hrns:
                 record.stale = False
             if record.peer_authority:
                 record.stale = False
 
-
         for record in self.all_records:
             if record.type == 'user':
         for record in self.all_records:
             if record.type == 'user':
-                self.logger.info("IotlabImporter: stale records: hrn %s %s" \
-                                            %(record.hrn,record.stale) )
+                self.logger.info("IotlabImporter: stale records: hrn %s %s"
+                                 % (record.hrn, record.stale))
             try:
                 stale = record.stale
             try:
                 stale = record.stale
-            except :
+            except:
                 stale = True
                 stale = True
-                self.logger.warning("stale not found with %s"%record)
+                self.logger.warning("stale not found with %s" % record)
             if stale:
             if stale:
-                self.logger.info("IotlabImporter: deleting stale record: %s" \
-                %(record))
+                self.logger.info("IotlabImporter: deleting stale record: %s"
+                                 % (record))
 
                 try:
                     dbsession.delete(record)
                     dbsession.commit()
                 except SQLAlchemyError:
 
                 try:
                     dbsession.delete(record)
                     dbsession.commit()
                 except SQLAlchemyError:
-                    self.logger.log_exc("IotlabImporter: failed to delete stale \
-                    record %s" %(record) )
-
-
+                    self.logger.log_exc("IotlabImporter: failed to delete \
+                        stale record %s" % (record))