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/*
*
* 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.qpid.info;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.TreeMap;
import java.util.Map.Entry;
/**
* Collector for system specific information
*/
public class SystemInfo
{
private static Map<String, String> sysInfoMap = new TreeMap<String, String>();
private static final List<String> sysProps = Arrays.asList(
"java.class.path", "java.home", "java.vm.name", "java.vm.vendor",
"java.vm.version", "java.class.version", "java.runtime.version",
"os.arch", "os.name", "os.version", "sun.arch.data.model",
"user.home", "user.dir", "user.name", "user.timezone");
/**
* getInfo collects all the properties specified in sysprops list
* @return A Map<String,String>
*/
public static Map<String, String> getInfo()
{
// Get the hostname
try
{
InetAddress addr = InetAddress.getLocalHost();
String hostname = addr.getHostName();
sysInfoMap.put("hostname", hostname);
sysInfoMap.put("ip", addr.getHostAddress());
}
catch (UnknownHostException e)
{
// drop everything to be silent
}
// Get the runtime info
sysInfoMap.put("CPUCores", Runtime.getRuntime().availableProcessors()
+ "");
sysInfoMap.put("Maximum_Memory", Runtime.getRuntime().maxMemory() + "");
sysInfoMap.put("Free_Memory", Runtime.getRuntime().freeMemory() + "");
// Gather the selected system props
Properties sysprops = System.getProperties();
String propName;
for (Iterator<Entry<Object, Object>> it = sysprops.entrySet()
.iterator(); it.hasNext();)
{
Entry<Object, Object> en = it.next();
propName = en.getKey().toString();
if (sysProps.indexOf(propName) >= 0)
{
sysInfoMap.put(propName, en.getValue().toString());
}
}
return sysInfoMap;
}
}
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