/* | |
* Copyright 1999-2011 Alibaba Group. | |
* | |
* 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.alibaba.dubbo.container.page.pages; | |
import java.lang.management.ManagementFactory; | |
import java.text.SimpleDateFormat; | |
import java.util.ArrayList; | |
import java.util.Date; | |
import java.util.List; | |
import java.util.Locale; | |
import com.alibaba.dubbo.common.URL; | |
import com.alibaba.dubbo.common.Version; | |
import com.alibaba.dubbo.common.utils.NetUtils; | |
import com.alibaba.dubbo.container.page.Menu; | |
import com.alibaba.dubbo.container.page.Page; | |
import com.alibaba.dubbo.container.page.PageHandler; | |
/** | |
* SystemPageHandler | |
* | |
* @author william.liangf | |
*/ | |
@Menu(name = "System", desc = "Show system environment information.", order = Integer.MAX_VALUE - 10000) | |
public class SystemPageHandler implements PageHandler { | |
public Page handle(URL url) { | |
List<List<String>> rows = new ArrayList<List<String>>(); | |
List<String> row; | |
row = new ArrayList<String>(); | |
row.add("Version"); | |
row.add(Version.getVersion(SystemPageHandler.class, "2.0.0")); | |
rows.add(row); | |
row = new ArrayList<String>(); | |
row.add("Host"); | |
String address = NetUtils.getLocalHost(); | |
row.add(NetUtils.getHostName(address) + "/" + address); | |
rows.add(row); | |
row = new ArrayList<String>(); | |
row.add("OS"); | |
row.add(System.getProperty("os.name") + " " + System.getProperty("os.version")); | |
rows.add(row); | |
row = new ArrayList<String>(); | |
row.add("JVM"); | |
row.add(System.getProperty("java.runtime.name") + " " + System.getProperty("java.runtime.version") + ",<br/>" + System.getProperty("java.vm.name") + " " + System.getProperty("java.vm.version") + " " + System.getProperty("java.vm.info", "")); | |
rows.add(row); | |
row = new ArrayList<String>(); | |
row.add("CPU"); | |
row.add(System.getProperty("os.arch", "") + ", " + String.valueOf(Runtime.getRuntime().availableProcessors()) + " cores"); | |
rows.add(row); | |
row = new ArrayList<String>(); | |
row.add("Locale"); | |
row.add(Locale.getDefault().toString() + "/" + System.getProperty("file.encoding")); | |
rows.add(row); | |
row = new ArrayList<String>(); | |
row.add("Uptime"); | |
row.add(formatUptime(ManagementFactory.getRuntimeMXBean().getUptime())); | |
rows.add(row); | |
row = new ArrayList<String>(); | |
row.add("Time"); | |
row.add(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS Z").format(new Date())); | |
rows.add(row); | |
return new Page("System", "System", new String[] { | |
"Property", "Value" }, rows); | |
} | |
private static final long SECOND = 1000; | |
private static final long MINUTE = 60 * SECOND; | |
private static final long HOUR = 60 * MINUTE; | |
private static final long DAY = 24 * HOUR; | |
private String formatUptime(long uptime) { | |
StringBuilder buf = new StringBuilder(); | |
if (uptime > DAY) { | |
long days = (uptime - uptime % DAY) / DAY; | |
buf.append(days); | |
buf.append(" Days"); | |
uptime = uptime % DAY; | |
} | |
if (uptime > HOUR) { | |
long hours = (uptime - uptime % HOUR) / HOUR; | |
if (buf.length() > 0) { | |
buf.append(", "); | |
} | |
buf.append(hours); | |
buf.append(" Hours"); | |
uptime = uptime % HOUR; | |
} | |
if (uptime > MINUTE) { | |
long minutes = (uptime - uptime % MINUTE) / MINUTE; | |
if (buf.length() > 0) { | |
buf.append(", "); | |
} | |
buf.append(minutes); | |
buf.append(" Minutes"); | |
uptime = uptime % MINUTE; | |
} | |
if (uptime > SECOND) { | |
long seconds = (uptime - uptime % SECOND) / SECOND; | |
if (buf.length() > 0) { | |
buf.append(", "); | |
} | |
buf.append(seconds); | |
buf.append(" Seconds"); | |
uptime = uptime % SECOND; | |
} | |
if (uptime > 0) { | |
if (buf.length() > 0) { | |
buf.append(", "); | |
} | |
buf.append(uptime); | |
buf.append(" Milliseconds"); | |
} | |
return buf.toString(); | |
} | |
} |