| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.cassandra.streaming; |
| |
| /** |
| * StreamReceiver acts as a staging area for incoming data. Received data |
| * ends up here, and is kept separate from the live data until all streams |
| * for a session have been received successfully |
| */ |
| public interface StreamReceiver |
| { |
| /** |
| * Called after we've finished receiving stream data. The data covered by the given stream should |
| * be kept isolated from the live dataset for it's table. |
| */ |
| void received(IncomingStream stream); |
| |
| /** |
| * This is called when we've received stream data we can't add to the received set for some reason, |
| * usually when we've received data for a session which has been closed. The data backing this stream |
| * should be deleted, and any resources associated with the given stream should be released. |
| */ |
| void discardStream(IncomingStream stream); |
| |
| /** |
| * Called when something went wrong with a stream session. All data associated with this receiver |
| * should be deleted, and any associated resources should be cleaned up |
| */ |
| void abort(); |
| |
| /** |
| * Called when a stream session has succesfully completed. All stream data being held by this receiver |
| * should be added to the live data sets for their respective tables before this method returns. |
| */ |
| void finished(); |
| |
| /** |
| * Called after finished has returned and we've sent any messages to other nodes. Mainly for |
| * signaling that mvs and cdc should cleanup. |
| */ |
| void cleanup(); |
| } |