-# record.py
-#
-# implements support for geni records
+##
+# Implements support for geni records
#
# TODO: Use existing PLC database methods? or keep this separate?
+##
-from pg import DB
-
-GENI_TABLE_PREFIX = "geni$"
+import report
+from gid import *
-# Record is a tuple (Name, GID, Type, Info)
-# info is comprised of the following sub-fields
+##
+# The GeniRecord class implements a Geni Record. A GeniRecord is a tuple
+# (Name, GID, Type, Info).
+#
+# Name specifies the HRN of the object
+# GID is the GID of the object
+# Type is user | sa | ma | slice | component
+#
+# Info is comprised of the following sub-fields
# pointer = a pointer to the record in the PL database
# pl_info = planetlab-specific info (when talking to client)
# geni_info = geni-specific info (when talking to client)
+#
+# The pointer is interpreted depending on the type of the record. For example,
+# if the type=="user", then pointer is assumed to be a person_id that indexes
+# into the persons table.
+#
+# A given HRN may have more than one record, provided that the records are
+# of different types. For example, planetlab.us.arizona may have both an SA
+# and a MA record, but cannot have two SA records.
class GeniRecord():
- def __init__(self, name=None, gid=None, type=None, pointer=None, dict=None):
+
+ ##
+ # Create a Geni Record
+ #
+ # @param name if !=None, assign the name of the record
+ # @param gid if !=None, assign the gid of the record
+ # @param type one of user | sa | ma | slice | component
+ # @param pointer is a pointer to a PLC record
+ # @param dict if !=None, then fill in this record from the dictionary
+
+ def __init__(self, name=None, gid=None, type=None, pointer=None, dict=None, string=None):
self.dirty = True
self.pl_info = None
self.geni_info = None
+ self.name = None
+ self.gid = None
+ self.type = None
+ self.pointer = None
if name:
self.set_name(name)
if gid:
if pointer:
self.set_pointer(pointer)
if dict:
- self.set_name(dict['name'])
- self.set_gid(dict['gid'])
- self.set_type(dict['type'])
- self.set_pointer(dict['pointer'])
- if "pl_info" in dict:
- self.set_pl_info(dict["pl_info"])
- if "geni_info" in dict:
- self.set_geni_info(dict["geni_info"])
+ self.load_from_dict(dict)
+ if string:
+ self.load_from_string(string)
+
+ ##
+ # Set the name of the record
+ #
+ # @param name is a string containing the HRN
def set_name(self, name):
self.name = name
self.dirty = True
+ ##
+ # Set the GID of the record
+ #
+ # @param gid is a GID object or the string representation of a GID object
+
def set_gid(self, gid):
- self.gid = gid
+ if isinstance(gid, str):
+ self.gid = gid
+ else:
+ self.gid = gid.save_to_string(save_parents=True)
self.dirty = True
+ ##
+ # Set the type of the record
+ #
+ # @param type is a string: user | sa | ma | slice | component
+
def set_type(self, type):
self.type = type
self.dirty = True
+ ##
+ # Set the pointer of the record
+ #
+ # @param pointer is an integer containing the ID of a PLC record
+
def set_pointer(self, pointer):
self.pointer = pointer
self.dirty = True
+ ##
+ # Set the PLC info of the record
+ #
+ # @param pl_info is a dictionary containing planetlab info
+
def set_pl_info(self, pl_info):
self.pl_info = pl_info
self.dirty = True
+ ##
+ # Set the geni info the record
+ #
+ # @param geni_info is a dictionary containing geni info
+
def set_geni_info(self, geni_info):
self.geni_info = geni_info
self.dirty = True
+ ##
+ # Return the pl_info of the record, or an empty dictionary if none exists
+
def get_pl_info(self):
if self.pl_info:
return self.pl_info
else:
return {}
+ ##
+ # Return the geni_info of the record, or an empty dictionary if none exists
+
def get_geni_info(self):
if self.geni_info:
return self.geni_info
else:
return {}
+ ##
+ # Return the name (HRN) of the record
+
+ def get_name(self):
+ return self.name
+
+ ##
+ # Return the type of the record
+
+ def get_type(self):
+ return self.type
+
+ ##
+ # Return the pointer of the record. The pointer is an integer that may be
+ # used to look up the record in the PLC database. The evaluation of pointer
+ # depends on the type of the record
+
def get_pointer(self):
- return pointer
+ return self.pointer
+
+ ##
+ # Return the GID of the record, in the form of a GID object
+ # TODO: not the best name for the function, because we have things called
+ # gidObjects in the Cred
+
+ def get_gid_object(self):
+ return GID(string=self.gid)
+
+ ##
+ # Return a key that uniquely identifies this record among all records in
+ # Geni. This key is used to uniquely identify the record in the Geni
+ # database.
def get_key(self):
return self.name + "#" + self.type
+ ##
+ # Returns a list of field names in this record. pl_info, geni_info are not
+ # included because they are not part of the record that is stored in the
+ # database, but are rather computed values from other entities
+
def get_field_names(self):
return ["name", "gid", "type", "pointer"]
+ ##
+ # Given a field name ("name", "gid", ...) return the value of that field.
+ #
+ # @param name is the name of field to be returned
+
def get_field_value_string(self, fieldname):
if fieldname == "key":
val = self.get_key()
else:
return str(val)
+ ##
+ # Given a list of field names, return a list of values for those fields.
+ #
+ # @param fieldnames is a list of field names
+
def get_field_value_strings(self, fieldnames):
strs = []
for fieldname in fieldnames:
strs.append(self.get_field_value_string(fieldname))
return strs
+ ##
+ # Return the record in the form of a dictionary
+
def as_dict(self):
dict = {}
names = self.get_field_names()
for name in names:
- dict[name] = self.getattr(name)
+ dict[name] = getattr(self, name)
if self.pl_info:
dict['pl_info'] = self.pl_info
return dict
-# GeniTable
-#
-# Represents a single table on a registry for a single authority.
-
-class GeniTable():
- def __init__(self, create=False, hrn="unspecified.default.registry", cninfo=None):
- global GENI_TABLE_PREFIX
-
- self.hrn = hrn
-
- # pgsql doesn't like table names with "." in them, to replace it with "$"
- self.tablename = GENI_TABLE_PREFIX + self.hrn.replace(".", "$")
-
- # establish a connection to the pgsql server
- self.cnx = DB(cninfo['dbname'], cninfo['address'], port=cninfo['port'], user=cninfo['user'], passwd=cninfo['password'])
-
- # if asked to create the table, then create it
- if create:
- self.create()
-
- def exists(self):
- tableList = self.cnx.get_tables()
- return (self.tablename in tableList)
-
- def create(self):
- querystr = "CREATE TABLE " + self.tablename + " ( \
- key text, \
- name text, \
- gid text, \
- type text, \
- pointer integer);"
-
- self.cnx.query('DROP TABLE IF EXISTS ' + self.tablename)
- self.cnx.query(querystr)
-
- def remove(self, record):
- query_str = "DELETE FROM " + self.tablename + " WHERE key = '" + record.get_key() + "'"
- self.cnx.quert(query_str)
-
- def insert(self, record):
- fieldnames = ["key"] + record.get_field_names()
- fieldvals = record.get_field_value_strings(fieldnames)
- query_str = "INSERT INTO " + self.tablename + \
- "(" + ",".join(fieldnames) + ") " + \
- "VALUES(" + ",".join(fieldvals) + ")"
- #print query_str
- self.cnx.query(query_str)
-
- def update(self, record):
- names = record.get_field_names()
- pairs = []
- for name in names:
- val = record.get_field_value_string(name)
- pairs.append(name + " = " + val)
- update = ", ".join(pairs)
-
- query_str = "UPDATE " + self.tablename+ " SET " + update + " WHERE key = '" + record.get_key() + "'"
- #print query_str
- self.cnx.query(query_str)
-
- def resolve_dict(self, type, hrn):
- query_str = "SELECT * FROM " + self.tablename + " WHERE name = '" + hrn + "'"
- dict_list = self.cnx.query(query_str).dictresult()
- result_dict_list = []
- for dict in dict_list:
- if (type=="*") or (dict['type'] == type):
- result_dict_list.append(dict)
- return result_dict_list
-
- def resolve(self, type, hrn):
- result_dict_list = self.resolve_dict(type, hrn)
- result_rec_list = []
- for dict in result_dict_list:
- result_rec_list.append(GeniRecord(dict=dict))
- return result_rec_list
-
- def list_dict(self):
- query_str = "SELECT * FROM " + self.tablename
- result_dict_list = self.cnx.query(query_str).dictresult()
- return result_dict_list
-
- def list(self):
- result_dict_list = self.list_dict()
- result_rec_list = []
- for dict in result_dict_list:
- result_rec_list.append(GeniRecord(dict=dict))
- return result_rec_list
-
-def set_geni_table_prefix(x):
- global GENI_TABLE_PREFIX
-
- GENI_TABLE_PREFIX = x
-
-def geni_records_purge(cninfo):
- global GENI_TABLE_PREFIX
-
- cnx = DB(cninfo['dbname'], cninfo['address'], port=cninfo['port'], user=cninfo['user'], passwd=cninfo['password'])
- tableList = cnx.get_tables()
- for table in tableList:
- if table.startswith(GENI_TABLE_PREFIX):
- cnx.query("DROP TABLE " + table)
+ ##
+ # Load the record from a dictionary
+ #
+ # @param dict dictionary to load record fields from
+
+ def load_from_dict(self, dict):
+ self.set_name(dict['name'])
+ self.set_gid(dict['gid'])
+ self.set_type(dict['type'])
+ self.set_pointer(dict['pointer'])
+ if "pl_info" in dict:
+ self.set_pl_info(dict["pl_info"])
+ if "geni_info" in dict:
+ self.set_geni_info(dict["geni_info"])
+
+ ##
+ # Save the record to a string. The string contains an XML representation of
+ # the record.
+
+ def save_to_string(self):
+ dict = self.as_dict()
+ str = xmlrpclib.dumps((dict,), allow_none=True)
+ return str
+
+ ##
+ # Load the record from a string. The string is assumed to contain an XML
+ # representation of the record.
+
+ def load_from_string(self, str):
+ dict = xmlrpclib.loads(str)[0][0]
+ self.load_from_dict(dict)
+
+ ##
+ # Dump the record to stdout
+ #
+ # @param dump_parents if true, then the parents of the GID will be dumped
+
+ def dump(self, dump_parents=False):
+ print "RECORD", self.name
+ print " hrn:", self.name
+ print " type:", self.type
+ print " gid:"
+ if (not self.gid):
+ print " None"
+ else:
+ self.get_gid_object().dump(8, dump_parents)
+ print " pointer:", self.pointer
+
+ print " geni_info:"
+ geni_info = getattr(self, "geni_info", {})
+ if geni_info:
+ for key in geni_info.keys():
+ print " ", key, ":", geni_info[key]
+
+ print " pl_info:"
+ pl_info = getattr(self, "pl_info", {})
+ if pl_info:
+ for key in pl_info.keys():
+ print " ", key, ":", pl_info[key]
+
+
git://git.onelab.eu / sfa.git / blobdiff