class Nibbler:
def __init__(self, fabnet_host, security_provider, parallel_put=3, parallel_get=3):
self.security_provider = security_provider
self.fabnet_gateway = FabnetGateway(fabnet_host, security_provider)
self.metadata = None
self.put_manager = PutDataManager(self.fabnet_gateway, self.__finish_file_put, parallel_put)
self.get_manager = GetDataManager(self.fabnet_gateway, parallel_get)
user_id = self.security_provider.get_client_cert()
self.metadata_key = hashlib.sha1(user_id).hexdigest()
self.put_manager.start()
self.get_manager.start()
def stop(self):
self.put_manager.stop()
self.get_manager.stop()
def __get_metadata(self, reload_force=False, metadata_key=None):
if self.metadata and not reload_force:
return self.metadata
if not metadata_key:
metadata_key = self.metadata_key
metadata = self.fabnet_gateway.get(metadata_key)
if metadata is None:
raise Exception("No metadata found!")
mdf = MetadataFile()
mdf.load(metadata)
self.metadata = mdf
return self.metadata
def __save_metadata(self):
version_key = self.metadata.make_new_version(self.metadata_key)
metadata = self.metadata.dump()
try:
self.fabnet_gateway.put(metadata, key=version_key)
except Exception, err:
self.metadata.remove_version(version_key)
raise err
try:
self.fabnet_gateway.put(metadata, key=self.metadata_key)
except Exception, err:
self.__get_metadata(reload_force=True)
raise err
def __init__(self, fabnet_host, security_provider, parallel_put=3, parallel_get=3):
self.security_provider = security_provider
self.fabnet_gateway = FabnetGateway(fabnet_host, security_provider)
self.metadata = None
self.put_manager = PutDataManager(self.fabnet_gateway, self.__finish_file_put, parallel_put)
self.get_manager = GetDataManager(self.fabnet_gateway, parallel_get)
user_id = self.security_provider.get_client_cert()
self.metadata_key = hashlib.sha1(user_id).hexdigest()
self.put_manager.start()
self.get_manager.start()