com.liferay.portal.fabric.agent.selectors.MinSystemCPULoadFabricAgentSelector Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.portal.fabric.agent.selectors;
import com.liferay.petra.process.ProcessCallable;
import com.liferay.portal.fabric.agent.FabricAgent;
import com.liferay.portal.fabric.status.AdvancedOperatingSystemMXBean;
import com.liferay.portal.fabric.status.FabricStatus;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
/**
* @author Shuyang Zhou
*/
public class MinSystemCPULoadFabricAgentSelector
implements FabricAgentSelector {
@Override
public Collection select(
Collection fabricAgents,
ProcessCallable processCallable) {
if (fabricAgents.isEmpty()) {
return fabricAgents;
}
return Collections.singleton(
Collections.min(fabricAgents, _COMPARATOR));
}
private static final Comparator _COMPARATOR =
new SystemCPULoadComparator();
private static class SystemCPULoadComparator
implements Comparator {
@Override
public int compare(FabricAgent fabricAgent1, FabricAgent fabricAgent2) {
FabricStatus fabricStatus1 = fabricAgent1.getFabricStatus();
AdvancedOperatingSystemMXBean advancedOperatingSystemMXBean1 =
fabricStatus1.getAdvancedOperatingSystemMXBean();
Double systemCpuLoad1 =
advancedOperatingSystemMXBean1.getSystemCpuLoad();
FabricStatus fabricStatus2 = fabricAgent2.getFabricStatus();
AdvancedOperatingSystemMXBean advancedOperatingSystemMXBean2 =
fabricStatus2.getAdvancedOperatingSystemMXBean();
Double systemCpuLoad2 =
advancedOperatingSystemMXBean2.getSystemCpuLoad();
if ((systemCpuLoad1 == null) && (systemCpuLoad2 == null)) {
return 0;
}
if (systemCpuLoad1 == null) {
return 1;
}
if (systemCpuLoad2 == null) {
return -1;
}
return systemCpuLoad1.compareTo(systemCpuLoad2);
}
}
}