99 lines
3.5 KiB
Python
99 lines
3.5 KiB
Python
import logging
|
|
import features
|
|
import time
|
|
|
|
from app import app, storage, image_replication_queue
|
|
from data.database import UseThenDisconnect, CloseForLongOperation
|
|
from data import model
|
|
from storage.basestorage import StoragePaths
|
|
from workers.queueworker import QueueWorker
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
POLL_PERIOD_SECONDS = 10
|
|
|
|
class StorageReplicationWorker(QueueWorker):
|
|
def process_queue_item(self, job_details):
|
|
storage_uuid = job_details['storage_id']
|
|
logger.debug('Starting replication of image storage %s', storage_uuid)
|
|
|
|
namespace = model.user.get_namespace_user_by_user_id(job_details['namespace_user_id'])
|
|
|
|
# Lookup the namespace and its associated regions.
|
|
if not namespace:
|
|
logger.debug('Unknown namespace: %s', namespace)
|
|
return True
|
|
|
|
locations = model.user.get_region_locations(namespace)
|
|
|
|
# Lookup the image storage.
|
|
partial_storage = model.storage.get_storage_by_uuid(storage_uuid)
|
|
if not partial_storage:
|
|
logger.debug('Unknown storage: %s', storage_uuid)
|
|
return True
|
|
|
|
# Check to see if the image is at all the required locations.
|
|
locations_required = locations | set(storage.default_locations)
|
|
locations_missing = locations_required - set(partial_storage.locations)
|
|
|
|
if not locations_missing:
|
|
logger.debug('No missing locations for storage %s under namespace %s',
|
|
storage_uuid, namespace.username)
|
|
return True
|
|
|
|
# For any missing storage locations, initiate a copy.
|
|
storage_paths = StoragePaths()
|
|
existing_location = list(partial_storage.locations)[0]
|
|
|
|
for location in locations_missing:
|
|
logger.debug('Copying image storage %s to location %s', partial_storage.uuid, location)
|
|
|
|
# Copy the various paths.
|
|
paths = [storage_paths.image_json_path,
|
|
storage_paths.image_ancestry_path,
|
|
storage_paths.image_layer_path]
|
|
|
|
try:
|
|
for path_builder in paths:
|
|
current_path = path_builder(partial_storage.uuid)
|
|
with CloseForLongOperation(app.config):
|
|
storage.copy_between(current_path, existing_location, location)
|
|
except:
|
|
logger.exception('Exception when copying path %s of image storage %s to location %s',
|
|
current_path, partial_storage.uuid, location)
|
|
return False
|
|
|
|
# Create the storage location record for the storage now that the copies have
|
|
# completed.
|
|
model.storage.add_storage_placement(partial_storage, location)
|
|
logger.debug('Finished copy of image storage %s to location %s',
|
|
partial_storage.uuid, location)
|
|
|
|
logger.debug('Completed replication of image storage %s to locations %s',
|
|
partial_storage.uuid, locations_missing)
|
|
return True
|
|
|
|
|
|
if __name__ == "__main__":
|
|
logging.config.fileConfig('conf/logging.conf', disable_existing_loggers=False)
|
|
|
|
has_local_storage = False
|
|
|
|
if features.STORAGE_REPLICATION:
|
|
for storage_type, _ in app.config.get('DISTRIBUTED_STORAGE_CONFIG', {}).values():
|
|
if storage_type == 'LocalStorage':
|
|
has_local_storage = True
|
|
break
|
|
|
|
if not features.STORAGE_REPLICATION or has_local_storage:
|
|
if has_local_storage:
|
|
logger.error("Storage replication can't be used with local storage")
|
|
else:
|
|
logger.debug('Full storage replication disabled; skipping')
|
|
while True:
|
|
time.sleep(10000)
|
|
|
|
logger.debug('Starting replication worker')
|
|
worker = StorageReplicationWorker(image_replication_queue,
|
|
poll_period_seconds=POLL_PERIOD_SECONDS)
|
|
worker.start()
|