def save_db(self):
"""Saves postgresql database into the file
"""
logger.debug(u'Backup database')
pg_dump_path = os.path.join(self.working_directory, 'pg_dump_all.sql')
pg_dump_files = utils.VersionedFile(pg_dump_path)
pg_dump_tmp_path = pg_dump_files.next_file_name()
utils.wait_for_true(
lambda: self.make_pg_dump(pg_dump_tmp_path, pg_dump_path),
timeout=self.config.db_backup_timeout,
interval=self.config.db_backup_interval)
valid_dumps = filter(utils.verify_postgres_dump,
pg_dump_files.sorted_files())
if valid_dumps:
utils.hardlink(valid_dumps[0], pg_dump_path, overwrite=True)
map(utils.remove_if_exists,
valid_dumps[self.config.keep_db_backups_count:])
else:
raise errors.DatabaseDumpError(
u'Failed to make database dump, there '
'are no valid database backup '
'files, {0}'.format(pg_dump_path))
def setUp(self):
self.path = '/tmp/path.ext'
self.versioned_file = utils.VersionedFile(self.path)