client_params

Utility class to manage connection parameters to databases and/or services

local params_factory = require('service_utils.db.client_params');

Sample usage of client params

local dbp = require('service_utils.db.client_params');

local p = {
	REGISTRAR = {
		client_type = 'rdbms',
		handler = 'service_utils.db.ev_postgres',
		params = {'127.0.0.1', '5432', 'ROC', 'gen', 'GEN'}
	},
	AAA = {
		client_type = 'rdbms',
		handler = 'service_utils.db.ev_postgres',
		params = {'127.0.0.1', '5432', 'AAA', 'gen', 'GEN'}
	},
	SUBSCRIBER = {
		client_type = 'rdbms',
		handler = 'service_utils.db.ev_postgres',
		params = {'127.0.0.1', '5433', 'SUBSCRIBER', 'gen', 'GEN'}
	},
	XCHANGE = {
		client_type = 'rdbms',
		handler = 'service_utils.db.ev_postgres',
		params = {'127.0.0.1', '5434', 'XCHANGE', 'gen', 'GEN'}
	},
	CONFIG = {
		client_type = 'redis',
		handler = 'service_utils.db.ev_redis',
		params = {'127.0.0.1', '6379', 'CONFIG', 'gen', 'GEN'}
	},
	INFO_EMAIL_CLIENT = {
		client_type = 'smtp',
		handler = 'service_utils.SMTP.email_client',
		params = {'smtp.gmail.com', '587', 'gmail_tls', 'info@tekenlight.com', 'Tekenlight@1', 'Tekenlight Info'},
	},
};

local service_client_params = params_factory.new(p);

return master_db_params;

Methods

params_factory.new(p);

DESCRIPTION:

Instantiates an object containing connection parameters to different services consumed by an application service instance.

PARAMETERS:

p: table, As illustrated in the sample above, attributes of each element in the array are
{ client_type(service name), handler(class path for the service client that handles the protocol),
params [service_url, port, module (in case of databases, schema), user_principal, password, user_name]
}

RETURN:

params: table, parameter data

service_client_params:get_params(...)

DESCRIPTION:

Fetches the set of parameters as table, indexed by service name

PARAMETERS:

...: string(s), 1 or more service names

RETURN:

params: table, parameter data of the mentioned services