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67 lines
3.0 KiB
Python
67 lines
3.0 KiB
Python
5 years ago
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import subprocess
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import sys
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from django.db.backends.base.creation import BaseDatabaseCreation
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from .client import DatabaseClient
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class DatabaseCreation(BaseDatabaseCreation):
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def sql_table_creation_suffix(self):
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suffix = []
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test_settings = self.connection.settings_dict['TEST']
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if test_settings['CHARSET']:
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suffix.append('CHARACTER SET %s' % test_settings['CHARSET'])
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if test_settings['COLLATION']:
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suffix.append('COLLATE %s' % test_settings['COLLATION'])
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return ' '.join(suffix)
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def _execute_create_test_db(self, cursor, parameters, keepdb=False):
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try:
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super()._execute_create_test_db(cursor, parameters, keepdb)
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except Exception as e:
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if len(e.args) < 1 or e.args[0] != 1007:
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# All errors except "database exists" (1007) cancel tests.
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self.log('Got an error creating the test database: %s' % e)
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sys.exit(2)
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else:
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raise e
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def _clone_test_db(self, suffix, verbosity, keepdb=False):
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source_database_name = self.connection.settings_dict['NAME']
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target_database_name = self.get_test_db_clone_settings(suffix)['NAME']
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test_db_params = {
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'dbname': self.connection.ops.quote_name(target_database_name),
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'suffix': self.sql_table_creation_suffix(),
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}
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with self._nodb_connection.cursor() as cursor:
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try:
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self._execute_create_test_db(cursor, test_db_params, keepdb)
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except Exception:
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if keepdb:
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# If the database should be kept, skip everything else.
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return
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try:
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if verbosity >= 1:
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self.log('Destroying old test database for alias %s...' % (
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self._get_database_display_str(verbosity, target_database_name),
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))
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cursor.execute('DROP DATABASE %(dbname)s' % test_db_params)
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self._execute_create_test_db(cursor, test_db_params, keepdb)
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except Exception as e:
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self.log('Got an error recreating the test database: %s' % e)
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sys.exit(2)
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self._clone_db(source_database_name, target_database_name)
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def _clone_db(self, source_database_name, target_database_name):
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dump_args = DatabaseClient.settings_to_cmd_args(self.connection.settings_dict)[1:]
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dump_cmd = ['mysqldump', *dump_args[:-1], '--routines', '--events', source_database_name]
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load_cmd = DatabaseClient.settings_to_cmd_args(self.connection.settings_dict)
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load_cmd[-1] = target_database_name
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with subprocess.Popen(dump_cmd, stdout=subprocess.PIPE) as dump_proc:
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with subprocess.Popen(load_cmd, stdin=dump_proc.stdout, stdout=subprocess.DEVNULL):
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# Allow dump_proc to receive a SIGPIPE if the load process exits.
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dump_proc.stdout.close()
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