| /* |
| * 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.giraph.comm; |
| |
| import org.apache.giraph.bsp.CentralizedServiceWorker; |
| import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration; |
| import org.apache.giraph.edge.Edge; |
| import org.apache.giraph.utils.ByteArrayVertexIdEdges; |
| import org.apache.giraph.utils.PairList; |
| import org.apache.giraph.utils.VertexIdEdges; |
| import org.apache.giraph.worker.WorkerInfo; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableComparable; |
| |
| import static org.apache.giraph.conf.GiraphConstants.ADDITIONAL_EDGE_REQUEST_SIZE; |
| import static org.apache.giraph.conf.GiraphConstants.MAX_EDGE_REQUEST_SIZE; |
| |
| /** |
| * Aggregates the edges to be sent to workers so they can be sent |
| * in bulk. Not thread-safe. |
| * |
| * @param <I> Vertex id |
| * @param <E> Edge value |
| */ |
| public class SendEdgeCache<I extends WritableComparable, E extends Writable> |
| extends SendVertexIdDataCache<I, Edge<I, E>, VertexIdEdges<I, E>> { |
| /** |
| * Constructor |
| * |
| * @param conf Giraph configuration |
| * @param serviceWorker Service worker |
| */ |
| public SendEdgeCache(ImmutableClassesGiraphConfiguration conf, |
| CentralizedServiceWorker<?, ?, ?> serviceWorker) { |
| super(conf, serviceWorker, MAX_EDGE_REQUEST_SIZE.get(conf), |
| ADDITIONAL_EDGE_REQUEST_SIZE.get(conf)); |
| } |
| |
| @Override |
| public VertexIdEdges<I, E> createVertexIdData() { |
| return new ByteArrayVertexIdEdges<I, E>(); |
| } |
| |
| /** |
| * Add an edge to the cache. |
| * |
| * @param workerInfo the remote worker destination |
| * @param partitionId the remote Partition this edge belongs to |
| * @param destVertexId vertex id that is ultimate destination |
| * @param edge Edge to send to remote worker |
| * @return Size of edges for the worker. |
| */ |
| public int addEdge(WorkerInfo workerInfo, |
| int partitionId, I destVertexId, Edge<I, E> edge) { |
| return addData(workerInfo, partitionId, destVertexId, edge); |
| } |
| |
| /** |
| * Gets the edges for a worker and removes it from the cache. |
| * |
| * @param workerInfo the address of the worker who owns the data |
| * partitions that are receiving the edges |
| * @return List of pairs (partitionId, ByteArrayVertexIdEdges), |
| * where all partition ids belong to workerInfo |
| */ |
| public PairList<Integer, VertexIdEdges<I, E>> |
| removeWorkerEdges(WorkerInfo workerInfo) { |
| return removeWorkerData(workerInfo); |
| } |
| |
| /** |
| * Gets all the edges and removes them from the cache. |
| * |
| * @return All vertex edges for all partitions |
| */ |
| public PairList<WorkerInfo, PairList<Integer, VertexIdEdges<I, E>>> |
| removeAllEdges() { |
| return removeAllData(); |
| } |
| } |