| import os |
| import subprocess |
| import sys |
|
|
| from django.db.backends.base.creation import BaseDatabaseCreation |
|
|
| from .client import DatabaseClient |
|
|
|
|
| class DatabaseCreation(BaseDatabaseCreation): |
| def sql_table_creation_suffix(self): |
| suffix = [] |
| test_settings = self.connection.settings_dict["TEST"] |
| if test_settings["CHARSET"]: |
| suffix.append("CHARACTER SET %s" % test_settings["CHARSET"]) |
| if test_settings["COLLATION"]: |
| suffix.append("COLLATE %s" % test_settings["COLLATION"]) |
| return " ".join(suffix) |
|
|
| def _execute_create_test_db(self, cursor, parameters, keepdb=False): |
| try: |
| super()._execute_create_test_db(cursor, parameters, keepdb) |
| except Exception as e: |
| if len(e.args) < 1 or e.args[0] != 1007: |
| |
| self.log("Got an error creating the test database: %s" % e) |
| sys.exit(2) |
| else: |
| raise |
|
|
| def _clone_test_db(self, suffix, verbosity, keepdb=False): |
| source_database_name = self.connection.settings_dict["NAME"] |
| target_database_name = self.get_test_db_clone_settings(suffix)["NAME"] |
| test_db_params = { |
| "dbname": self.connection.ops.quote_name(target_database_name), |
| "suffix": self.sql_table_creation_suffix(), |
| } |
| with self._nodb_cursor() as cursor: |
| try: |
| self._execute_create_test_db(cursor, test_db_params, keepdb) |
| except Exception: |
| if keepdb: |
| |
| return |
| try: |
| if verbosity >= 1: |
| self.log( |
| "Destroying old test database for alias %s..." |
| % ( |
| self._get_database_display_str( |
| verbosity, target_database_name |
| ), |
| ) |
| ) |
| cursor.execute("DROP DATABASE %(dbname)s" % test_db_params) |
| self._execute_create_test_db(cursor, test_db_params, keepdb) |
| except Exception as e: |
| self.log("Got an error recreating the test database: %s" % e) |
| sys.exit(2) |
| self._clone_db(source_database_name, target_database_name) |
|
|
| def _clone_db(self, source_database_name, target_database_name): |
| cmd_args, cmd_env = DatabaseClient.settings_to_cmd_args_env( |
| self.connection.settings_dict, [] |
| ) |
| dump_cmd = [ |
| "mysqldump", |
| *cmd_args[1:-1], |
| "--routines", |
| "--events", |
| source_database_name, |
| ] |
| dump_env = load_env = {**os.environ, **cmd_env} if cmd_env else None |
| load_cmd = cmd_args |
| load_cmd[-1] = target_database_name |
|
|
| with subprocess.Popen( |
| dump_cmd, stdout=subprocess.PIPE, env=dump_env |
| ) as dump_proc: |
| with subprocess.Popen( |
| load_cmd, |
| stdin=dump_proc.stdout, |
| stdout=subprocess.DEVNULL, |
| env=load_env, |
| ): |
| |
| dump_proc.stdout.close() |
|
|
