| /* |
| * 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.ignite.console.demo.task; |
| |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Random; |
| import org.apache.ignite.IgniteException; |
| import org.apache.ignite.cluster.ClusterNode; |
| import org.apache.ignite.compute.ComputeJob; |
| import org.apache.ignite.compute.ComputeJobAdapter; |
| import org.apache.ignite.compute.ComputeJobResult; |
| import org.apache.ignite.compute.ComputeJobResultPolicy; |
| import org.apache.ignite.compute.ComputeTask; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Simple compute task. |
| */ |
| public class DemoComputeTask implements ComputeTask<Void, Integer> { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** Random generator. */ |
| private static final Random rnd = new Random(); |
| |
| /** {@inheritDoc} */ |
| @NotNull @Override public Map<? extends ComputeJob, ClusterNode> map(List<ClusterNode> subgrid, |
| @Nullable Void arg) throws IgniteException { |
| HashMap<ComputeJob, ClusterNode> map = new HashMap<>(subgrid.size()); |
| |
| for (ClusterNode node: subgrid) { |
| for (int i = 0; i < Math.max(1, rnd.nextInt(5)); i++) |
| map.put(new DemoComputeJob(), node); |
| } |
| |
| return map; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public ComputeJobResultPolicy result(ComputeJobResult res, List<ComputeJobResult> rcvd) throws IgniteException { |
| return ComputeJobResultPolicy.REDUCE; |
| } |
| |
| /** {@inheritDoc} */ |
| @Nullable @Override public Integer reduce(List<ComputeJobResult> results) throws IgniteException { |
| int sum = 0; |
| |
| for (ComputeJobResult r: results) { |
| if (!r.isCancelled() && r.getException() == null) { |
| int jobRes = r.getData(); |
| |
| sum += jobRes; |
| } |
| } |
| |
| return sum; |
| } |
| |
| /** |
| * Simple compute job. |
| */ |
| private static class DemoComputeJob extends ComputeJobAdapter { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** {@inheritDoc} */ |
| @Override public Object execute() throws IgniteException { |
| try { |
| Thread.sleep(rnd.nextInt(50)); |
| |
| return rnd.nextInt(10000); |
| } |
| catch (InterruptedException e) { |
| // Restore interrupt status |
| Thread.currentThread().interrupt(); |
| } |
| |
| return null; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(DemoComputeJob.class, this); |
| } |
| } |
| } |