from gid import *
##
-# GeniRecord 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():
+
+ ##
+ # 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):
self.dirty = True
self.pl_info = None
if "geni_info" in dict:
self.set_geni_info(dict["geni_info"])
+ ##
+ # 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):
if isinstance(gid, str):
self.gid = gid
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 self.pointer
- # TODO: not the best name for the function, because we have things called gidObjects in the Cred
+ ##
+ # 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()
return 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
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