def restore(self, backup, restore_path, overwrite):
"""
:type backup: freezer.storage.Backup
"""
logging.info("Creation restore path: {0}".format(restore_path))
utils.create_dir_tree(restore_path)
if not overwrite and not utils.is_empty_dir(restore_path):
raise Exception(
"Restore dir is not empty. "
"Please use --overwrite or provide different path.")
logging.info("Creation restore path completed")
for level in range(0, backup.level + 1):
b = backup.full_backup.increments[level]
logging.info("Restore backup {0}".format(b))
read_pipe, write_pipe = multiprocessing.Pipe()
process_stream = multiprocessing.Process(
target=self.read_blocks,
args=(b, write_pipe, read_pipe))
process_stream.daemon = True
process_stream.start()
write_pipe.close()
# Start the tar pipe consumer process
tar_stream = multiprocessing.Process(
target=self.restore_level,
args=(restore_path, read_pipe, backup))
tar_stream.daemon = True
tar_stream.start()
read_pipe.close()
write_pipe.close()
process_stream.join()
tar_stream.join()
if tar_stream.exitcode:
raise Exception('failed to restore file')
logging.info(
'[*] Restore execution successfully executed \
for backup name {0}'.format(backup))
def create_dirs(self, path):
utils.create_dir_tree(path)
def restore(self, hostname_backup_name, restore_resource,
overwrite,
recent_to_date,
backup_media=None):
"""
:param hostname_backup_name:
:param restore_path:
:param overwrite:
:param recent_to_date:
"""
if backup_media == 'fs':
LOG.info("Creating restore path: {0}".format(restore_resource))
# if restore path can't be created this function will raise
# exception
utils.create_dir_tree(restore_resource)
if not overwrite and not utils.is_empty_dir(restore_resource):
raise Exception(
"Restore dir is not empty. "
"Please use --overwrite or provide different path "
"or remove the content of {}".format(restore_resource))
LOG.info("Restore path creation completed")
backups = self.storage.get_latest_level_zero_increments(
engine=self,
hostname_backup_name=hostname_backup_name,
recent_to_date=recent_to_date)
max_level = max(backups.keys())
# Use SimpleQueue because Queue does not work on Mac OS X.
read_except_queue = queues.SimpleQueue()
LOG.info("Restoring backup {0}".format(hostname_backup_name))
for level in range(0, max_level + 1):
LOG.info("Restoring from level {0}".format(level))
backup = backups[level]
read_pipe, write_pipe = multiprocessing.Pipe()
process_stream = multiprocessing.Process(
target=self.read_blocks,
args=(backup, write_pipe, read_pipe, read_except_queue))
process_stream.daemon = True
process_stream.start()
write_pipe.close()
# Start the tar pipe consumer process
# Use SimpleQueue because Queue does not work on Mac OS X.
write_except_queue = queues.SimpleQueue()
engine_stream = multiprocessing.Process(
target=self.restore_level,
args=(restore_resource, read_pipe, backup, write_except_queue))
engine_stream.daemon = True
engine_stream.start()
read_pipe.close()
write_pipe.close()
process_stream.join()
engine_stream.join()
# SimpleQueue handling is different from queue handling.
def handle_except_SimpleQueue(except_queue):
if not except_queue.empty():
while not except_queue.empty():
e = except_queue.get()
LOG.exception('Engine error: {0}'.format(e))
return True
else:
return False
got_exception = None
got_exception = (handle_except_SimpleQueue(read_except_queue) or
got_exception)
got_exception = (handle_except_SimpleQueue(write_except_queue) or
got_exception)
if engine_stream.exitcode or got_exception:
raise engine_exceptions.EngineException(
"Engine error. Failed to restore.")
LOG.info(
'Restore completed successfully for backup name '
'{0}'.format(hostname_backup_name))
def restore(self, backup, restore_path, overwrite):
"""
:type backup: freezer.storage.Backup
"""
logging.info("Creation restore path: {0}".format(restore_path))
utils.create_dir_tree(restore_path)
if not overwrite and not utils.is_empty_dir(restore_path):
raise Exception(
"Restore dir is not empty. "
"Please use --overwrite or provide different path.")
logging.info("Creation restore path completed")
for level in range(0, backup.level + 1):
b = backup.full_backup.increments[level]
logging.info("Restore backup {0}".format(b))
# Use SimpleQueue because Queue does not work on Mac OS X.
read_except_queue = SimpleQueue()
read_pipe, write_pipe = multiprocessing.Pipe()
process_stream = multiprocessing.Process(
target=self.read_blocks,
args=(b, write_pipe, read_pipe, read_except_queue))
process_stream.daemon = True
process_stream.start()
write_pipe.close()
# Start the tar pipe consumer process
# Use SimpleQueue because Queue does not work on Mac OS X.
write_except_queue = SimpleQueue()
tar_stream = multiprocessing.Process(
target=self.restore_level,
args=(restore_path, read_pipe, backup, write_except_queue))
tar_stream.daemon = True
tar_stream.start()
read_pipe.close()
write_pipe.close()
process_stream.join()
tar_stream.join()
# SimpleQueue handling is different from queue handling.
def handle_except_SimpleQueue(except_queue):
if not except_queue.empty():
while not except_queue.empty():
e = except_queue.get()
logging.critical('Engine error: {0}'.format(e))
return True
else:
return False
got_exception = None
got_exception = (handle_except_SimpleQueue(read_except_queue) or
got_exception)
got_exception = (handle_except_SimpleQueue(write_except_queue) or
got_exception)
if tar_stream.exitcode or got_exception:
raise EngineException("Engine error. Failed to restore.")
logging.info(
'[*] Restore execution successfully executed \
for backup name {0}'.format(backup))
def create_dirs(self, path):
utils.create_dir_tree(path)
