Merge "pep8 db.py"
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@ -32,7 +32,7 @@ from eventlet import sleep, Timeout
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import sqlite3
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from swift.common.utils import json, normalize_timestamp, renamer, \
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mkdirs, lock_parent_directory, fallocate
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mkdirs, lock_parent_directory, fallocate
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from swift.common.exceptions import LockTimeout
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@ -60,7 +60,7 @@ class DatabaseConnectionError(sqlite3.DatabaseError):
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def __str__(self):
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return 'DB connection error (%s, %s):\n%s' % (
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self.path, self.timeout, self.msg)
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self.path, self.timeout, self.msg)
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class GreenDBConnection(sqlite3.Connection):
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@ -84,7 +84,7 @@ class GreenDBConnection(sqlite3.Connection):
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def execute(self, *args, **kwargs):
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return self._timeout(lambda: sqlite3.Connection.execute(
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self, *args, **kwargs))
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self, *args, **kwargs))
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def commit(self):
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return self._timeout(lambda: sqlite3.Connection.commit(self))
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@ -131,14 +131,14 @@ def get_db_connection(path, timeout=30, okay_to_create=False):
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try:
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connect_time = time.time()
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conn = sqlite3.connect(path, check_same_thread=False,
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factory=GreenDBConnection, timeout=timeout)
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factory=GreenDBConnection, timeout=timeout)
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if path != ':memory:' and not okay_to_create:
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# attempt to detect and fail when connect creates the db file
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stat = os.stat(path)
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if stat.st_size == 0 and stat.st_ctime >= connect_time:
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os.unlink(path)
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raise DatabaseConnectionError(path,
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'DB file created by connect?')
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'DB file created by connect?')
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conn.row_factory = sqlite3.Row
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conn.text_factory = str
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conn.execute('PRAGMA synchronous = NORMAL')
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@ -149,7 +149,7 @@ def get_db_connection(path, timeout=30, okay_to_create=False):
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except sqlite3.DatabaseError:
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import traceback
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raise DatabaseConnectionError(path, traceback.format_exc(),
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timeout=timeout)
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timeout=timeout)
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return conn
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@ -186,7 +186,7 @@ class DatabaseBroker(object):
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fd, tmp_db_file = mkstemp(suffix='.tmp', dir=self.db_dir)
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os.close(fd)
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conn = sqlite3.connect(tmp_db_file, check_same_thread=False,
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factory=GreenDBConnection, timeout=0)
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factory=GreenDBConnection, timeout=0)
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# creating dbs implicitly does a lot of transactions, so we
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# pick fast, unsafe options here and do a big fsync at the end.
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conn.execute('PRAGMA synchronous = OFF')
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@ -243,8 +243,9 @@ class DatabaseBroker(object):
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if os.path.exists(self.db_file):
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# It's as if there was a "condition" where different parts
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# of the system were "racing" each other.
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raise DatabaseConnectionError(self.db_file,
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'DB created by someone else while working?')
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raise DatabaseConnectionError(
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self.db_file,
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'DB created by someone else while working?')
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renamer(tmp_db_file, self.db_file)
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self.conn = get_db_connection(self.db_file, self.timeout)
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else:
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@ -285,7 +286,8 @@ class DatabaseBroker(object):
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dbs_path = os.path.dirname(partition_path)
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device_path = os.path.dirname(dbs_path)
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quar_path = os.path.join(device_path, 'quarantined',
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self.db_type + 's', os.path.basename(self.db_dir))
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self.db_type + 's',
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os.path.basename(self.db_dir))
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try:
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renamer(self.db_dir, quar_path)
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except OSError, e:
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@ -294,7 +296,7 @@ class DatabaseBroker(object):
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quar_path = "%s-%s" % (quar_path, uuid4().hex)
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renamer(self.db_dir, quar_path)
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detail = _('Quarantined %s to %s due to %s database') % \
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(self.db_dir, quar_path, exc_hint)
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(self.db_dir, quar_path, exc_hint)
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self.logger.error(detail)
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raise sqlite3.DatabaseError(detail)
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@ -498,13 +500,13 @@ class DatabaseBroker(object):
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INSERT INTO %s_sync (sync_point, remote_id)
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VALUES (?, ?)
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''' % ('incoming' if incoming else 'outgoing'),
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(rec['sync_point'], rec['remote_id']))
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(rec['sync_point'], rec['remote_id']))
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except sqlite3.IntegrityError:
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conn.execute('''
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UPDATE %s_sync SET sync_point=max(?, sync_point)
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WHERE remote_id=?
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''' % ('incoming' if incoming else 'outgoing'),
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(rec['sync_point'], rec['remote_id']))
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(rec['sync_point'], rec['remote_id']))
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conn.commit()
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def _preallocate(self):
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@ -787,7 +789,7 @@ class ContainerBroker(DatabaseBroker):
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raise
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with self.get() as conn:
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row = conn.execute(
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'SELECT object_count from container_stat').fetchone()
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'SELECT object_count from container_stat').fetchone()
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return (row[0] == 0)
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def _commit_puts(self, item_list=None):
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@ -808,10 +810,12 @@ class ContainerBroker(DatabaseBroker):
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try:
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(name, timestamp, size, content_type, etag,
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deleted) = pickle.loads(entry.decode('base64'))
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item_list.append({'name': name, 'created_at':
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timestamp, 'size': size, 'content_type':
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content_type, 'etag': etag,
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'deleted': deleted})
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item_list.append({'name': name,
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'created_at': timestamp,
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'size': size,
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'content_type': content_type,
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'etag': etag,
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'deleted': deleted})
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except Exception:
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self.logger.exception(
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_('Invalid pending entry %(file)s: %(entry)s'),
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@ -1277,7 +1281,7 @@ class AccountBroker(DatabaseBroker):
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UPDATE account_stat SET account = ?, created_at = ?, id = ?,
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put_timestamp = ?
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''', (self.account, normalize_timestamp(time.time()), str(uuid4()),
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put_timestamp))
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put_timestamp))
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def get_db_version(self, conn):
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if self._db_version == -1:
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@ -1332,14 +1336,15 @@ class AccountBroker(DatabaseBroker):
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if entry:
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try:
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(name, put_timestamp, delete_timestamp,
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object_count, bytes_used, deleted) = \
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object_count, bytes_used, deleted) = \
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pickle.loads(entry.decode('base64'))
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item_list.append({'name': name,
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'put_timestamp': put_timestamp,
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'delete_timestamp': delete_timestamp,
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'object_count': object_count,
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'bytes_used': bytes_used,
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'deleted': deleted})
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item_list.append(
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{'name': name,
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'put_timestamp': put_timestamp,
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'delete_timestamp': delete_timestamp,
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'object_count': object_count,
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'bytes_used': bytes_used,
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'deleted': deleted})
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except Exception:
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self.logger.exception(
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_('Invalid pending entry %(file)s: %(entry)s'),
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@ -1365,7 +1370,7 @@ class AccountBroker(DatabaseBroker):
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raise
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with self.get() as conn:
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row = conn.execute(
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'SELECT container_count from account_stat').fetchone()
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'SELECT container_count from account_stat').fetchone()
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return (row[0] == 0)
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def reclaim(self, container_timestamp, sync_timestamp):
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@ -1419,7 +1424,7 @@ class AccountBroker(DatabaseBroker):
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ret = conn.execute('''
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SELECT put_timestamp FROM container
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WHERE name = ? AND deleted != 1''',
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(container_name,)).fetchone()
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(container_name,)).fetchone()
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if ret:
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ret = ret[0]
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return ret
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@ -1513,8 +1518,8 @@ class AccountBroker(DatabaseBroker):
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SELECT put_timestamp, delete_timestamp, container_count, status
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FROM account_stat''').fetchone()
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return row['status'] == 'DELETED' or (
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row['container_count'] in (None, '', 0, '0') and
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row['delete_timestamp'] > row['put_timestamp'])
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row['container_count'] in (None, '', 0, '0') and
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row['delete_timestamp'] > row['put_timestamp'])
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def is_status_deleted(self):
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"""Only returns true if the status field is set to DELETED."""
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