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com.hivemq.diagnostic.data.HiveMQSystemInformation Maven / Gradle / Ivy
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HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5
The newest version!
/*
* Copyright 2019-present HiveMQ GmbH
*
* Licensed 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 com.hivemq.diagnostic.data;
import com.sun.management.UnixOperatingSystemMXBean;
import org.apache.commons.lang3.exception.ExceptionUtils;
import java.lang.management.ManagementFactory;
import java.lang.management.OperatingSystemMXBean;
/**
* @author Lukas Brandl
*/
public class HiveMQSystemInformation extends AbstractInformation {
public String getSystemInformation() {
try {
final OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();
final StringBuilder systemInformationBuilder = new StringBuilder();
addInformation(systemInformationBuilder,
"Available Processors",
String.valueOf(operatingSystemMXBean.getAvailableProcessors()));
addInformation(systemInformationBuilder,
"System Load Average",
String.valueOf(operatingSystemMXBean.getSystemLoadAverage()));
//We can gather more information if we have a concrete subclass
if (operatingSystemMXBean instanceof com.sun.management.OperatingSystemMXBean) {
final com.sun.management.OperatingSystemMXBean systemMXBean =
(com.sun.management.OperatingSystemMXBean) operatingSystemMXBean;
addInformation(systemInformationBuilder,
"Total Swap Space Size",
String.valueOf(systemMXBean.getTotalSwapSpaceSize()));
addInformation(systemInformationBuilder,
"Committed Virtual Memory Size",
String.valueOf(systemMXBean.getCommittedVirtualMemorySize()));
addInformation(systemInformationBuilder,
"Total Physical Memory Size",
String.valueOf(systemMXBean.getCommittedVirtualMemorySize()));
}
//We get even more information if we're running on a Linux System
if (operatingSystemMXBean instanceof UnixOperatingSystemMXBean) {
final UnixOperatingSystemMXBean systemMXBean = (UnixOperatingSystemMXBean) operatingSystemMXBean;
addInformation(systemInformationBuilder,
"Max File Descriptor Count",
String.valueOf(systemMXBean.getMaxFileDescriptorCount()));
addInformation(systemInformationBuilder,
"Open File Descriptor Count",
String.valueOf(systemMXBean.getOpenFileDescriptorCount()));
}
return systemInformationBuilder.toString();
} catch (final Exception e) {
return "Could not get System Information. Exception: " + ExceptionUtils.getStackTrace(e);
}
}
}