/*
* 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.Extension;
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)
@Extension("system")
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();
}
}