| /* |
| * 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.bsp; |
| |
| import java.util.List; |
| |
| import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration; |
| import org.apache.giraph.job.JobProgressTracker; |
| import org.apache.giraph.master.MasterInfo; |
| import org.apache.giraph.worker.WorkerInfo; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableComparable; |
| |
| /** |
| * Basic service interface shared by both {@link CentralizedServiceMaster} and |
| * {@link CentralizedServiceWorker}. |
| * |
| * @param <I> Vertex id |
| * @param <V> Vertex value |
| * @param <E> Edge value |
| */ |
| @SuppressWarnings("rawtypes") |
| public interface CentralizedService<I extends WritableComparable, |
| V extends Writable, E extends Writable> { |
| /** |
| * Get the current global superstep of the application to work on. |
| * |
| * @return global superstep (begins at INPUT_SUPERSTEP) |
| */ |
| long getSuperstep(); |
| |
| /** |
| * Get the restarted superstep |
| * |
| * @return -1 if not manually restarted, otherwise the superstep id |
| */ |
| long getRestartedSuperstep(); |
| |
| /** |
| * Get list of workers |
| * |
| * @return List of workers |
| */ |
| List<WorkerInfo> getWorkerInfoList(); |
| |
| /** |
| * Get master info |
| * |
| * @return Master info |
| */ |
| MasterInfo getMasterInfo(); |
| |
| /** |
| * Get JobProgressTracker to report progress to |
| * |
| * @return JobProgressTrackerClient |
| */ |
| JobProgressTracker getJobProgressTracker(); |
| |
| /** |
| * Get configuration |
| * @return configuration |
| */ |
| ImmutableClassesGiraphConfiguration<I, V, E> getConfiguration(); |
| } |