| /* |
| * 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; |
| |
| import java.util.Collection; |
| import java.util.UUID; |
| |
| import org.apache.cassandra.locator.RangesAtEndpoint; |
| import org.apache.cassandra.streaming.messages.StreamMessageHeader; |
| |
| /** |
| * The main streaming hook for a storage implementation. |
| * |
| * From here, the streaming system can get instances of {@link StreamReceiver}, {@link IncomingStream}, |
| * and {@link OutgoingStream}, which expose the interfaces into the the underlying storage implementation |
| * needed to make streaming work. |
| */ |
| public interface TableStreamManager |
| { |
| /** |
| * Creates a {@link StreamReceiver} for the given session, expecting the given number of streams |
| */ |
| StreamReceiver createStreamReceiver(StreamSession session, int totalStreams); |
| |
| /** |
| * Creates an {@link IncomingStream} for the given header |
| */ |
| IncomingStream prepareIncomingStream(StreamSession session, StreamMessageHeader header); |
| |
| /** |
| * Returns a collection of {@link OutgoingStream}s that contains the data selected by the |
| * given replicas, pendingRepair, and preview. |
| * |
| * There aren't any requirements on how data is divided between the outgoing streams |
| */ |
| Collection<OutgoingStream> createOutgoingStreams(StreamSession session, |
| RangesAtEndpoint replicas, |
| UUID pendingRepair, |
| PreviewKind previewKind); |
| } |