def map(self, key):
"""Copy data map handler.
Args:
key: Datastore entity key or entity itself to copy.
Yields:
A db operation to store the entity in the target app.
An operation which updates max used ID if necessary.
A counter operation incrementing the count for the entity kind.
"""
mapper_params = get_mapper_params()
target_app = mapper_params['target_app']
if isinstance(key, datastore.Entity):
entity = key
key = entity.key()
else:
entity = datastore.Get(key)
entity_proto = entity._ToPb()
utils.FixKeys(entity_proto, target_app)
target_entity = datastore.Entity._FromPb(entity_proto)
yield operation.db.Put(target_entity)
yield utils.AllocateMaxId(key, target_app)
yield operation.counters.Increment(KindPathFromKey(key))
def map(self, record):
"""Restore entity map handler.
Args:
record: A serialized entity_pb.EntityProto.
Yields:
A operation.db.Put for the mapped entity
"""
self.initialize()
pb = entity_pb.EntityProto(contents=record)
if self.app_id:
utils.FixKeys(pb, self.app_id)
entity = datastore.Entity.FromPb(pb)
if not self.kind_filter or entity.kind() in self.kind_filter:
yield op.db.Put(entity)
if self.app_id:
yield utils.AllocateMaxId(entity.key(), self.app_id)