syntax = "proto2"; package parkspace_proto; message Database_communication_configuration { required string db_ip=1; required int64 db_port=2; required string db_username=3; optional string db_passwd=4[default=""]; required string db_name=5; optional int64 db_conn_pool_size=6; } message Database_communication_configuration_all { optional Database_communication_configuration database_communication_configurations = 1; }