| /* |
| * 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.platform; |
| |
| import java.lang.management.ManagementFactory; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| 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.ComputeTaskAdapter; |
| import org.apache.ignite.internal.util.typedef.F; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Task to get max Java heap memory for node. |
| */ |
| public class PlatformMaxMemoryTask extends ComputeTaskAdapter<Object, Long> { |
| /** {@inheritDoc} */ |
| @NotNull @Override public Map<? extends ComputeJob, ClusterNode> map(List<ClusterNode> subgrid, |
| @Nullable Object arg) { |
| return Collections.singletonMap(new MaxMemoryJob(), F.first(subgrid)); |
| } |
| |
| /** {@inheritDoc} */ |
| @Nullable @Override public Long reduce(List<ComputeJobResult> results) { |
| return results.get(0).getData(); |
| } |
| |
| /** |
| * Job. |
| */ |
| private static class MaxMemoryJob extends ComputeJobAdapter { |
| /** {@inheritDoc} */ |
| @Nullable @Override public Object execute() { |
| return ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getMax(); |
| } |
| } |
| } |