def load_connection_names(self):
'''
load all connection names from workspace
@return: count of connections
'''
# setup the connection file path into workspace folder
fileconstant = File_constant()
workspacepath = self.get_trans().get_workspacepath()
cassandra_conection_folder = workspacepath + fileconstant.CASSANDRA_CONFIG_FOLDER
if not File_processor.verify_dir_existing(cassandra_conection_folder):
File_processor.create_folder(cassandra_conection_folder)
cassandra_conection_file = cassandra_conection_folder + fileconstant.CASSANDRA_CONNECTION_FILE
# verify connection file existing
if not File_processor.verify_file(cassandra_conection_file):
showerror('Error', 'Cassandra connection file does not exist!')
return 0
# load connection names
connection_names = Database_connection_file_processor.read_connection_names(
cassandra_conection_file)
# set tuple to combox list
self.__comboxlist["values"] = tuple(connection_names)
if len(self.__comboxlist["values"]) == 0:
showerror('Error', 'No valid connection, please add one first!')
return 0
# default the first one
self.__comboxlist.current(0)
# load connection parameters
connection_params = Database_connection_file_processor.read_connection_params(
cassandra_conection_file, self.__comboxlist.get())
# set parameters
self.__input02.delete(0, END)
self.__input02.insert(END, connection_params['host'])
self.__input03.delete(0, END)
self.__input03.insert(END, connection_params['port'])
self.__input04.delete(0, END)
self.__input04.insert(END, connection_params['username'])
self.__input05.delete(0, END)
self.__input05.insert(END, connection_params['password'])
return len(self.__comboxlist["values"])
def before_next(self):
'''
overwrite the function in super class
verify the input directory
generating the next frames according to the selections
'''
# verify the connection name
if not self.__input01.get(
) and self.__maintain_mode == MATAIN_MODE_NEW:
showerror('Error', 'Please provide the connection name!')
return False
# verify the input value
if not self.__input02.get() or not self.__input03.get(
) or not self.__input04.get() or not self.__input05.get():
showerror('Error', 'Please provide the complete info!')
return False
# setup the connection file path into workspace folder
fileconstant = File_constant()
workspacepath = self.get_trans().get_workspacepath()
cassandra_conection_folder = workspacepath + fileconstant.CASSANDRA_CONFIG_FOLDER
if not File_processor.verify_dir_existing(cassandra_conection_folder):
File_processor.create_folder(cassandra_conection_folder)
cassandra_conection_file = cassandra_conection_folder + fileconstant.CASSANDRA_CONNECTION_FILE
# combine the connection parameter
# TODO: this should be implemented as toString() in Cassandra_connection_dto
if self.__maintain_mode == MATAIN_MODE_NEW:
connection_name = self.__input01.get()
connection_param = self.__input01.get(
) + ':' + 'host=' + self.__input02.get(
) + ',port=' + self.__input03.get(
) + ',username='******',password='******':' + 'host=' + self.__input02.get(
) + ',port=' + self.__input03.get(
) + ',username='******',password='******'Warning',
'The connection name is existing, do you confirm to overwrite?'
):
return False
Database_connection_file_processor.update_connection_file(
cassandra_conection_file, connection_name, connection_param)
return True