com.alibaba.druid.support.jconsole.DruidPanel Maven / Gradle / Ivy
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An JDBC datasource implementation.
/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* 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.druid.support.jconsole;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.util.ArrayList;
import java.util.Date;
import java.util.LinkedHashMap;
import javax.management.MBeanServerConnection;
import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.border.TitledBorder;
import com.alibaba.druid.support.jconsole.model.DruidTableModel;
import com.alibaba.druid.support.jconsole.util.TableDataProcessor;
import com.alibaba.druid.support.logging.Log;
import com.alibaba.druid.support.logging.LogFactory;
import com.sun.tools.jconsole.JConsoleContext;
/**
* druid面板的抽象类 在类在实现的时候，通过url地址获取数据，解析此数据，然后显示在界面中
*
* @author yunnysunny
*/
public abstract class DruidPanel extends JPanel {
private static final long serialVersionUID = 1L;
/** 默认面板刷新的间隔时间 */
protected static final long DEFAULT_ACTIVE_TIME = 5 * 60 * 1000;
/** 版权信息字符串 */
private static final String COPYRIGHT_STRING = "powered by yunnysunny";
/** 滚动条面板 */
protected JScrollPane scrollPane;
/** 表格模板 */
protected DruidTableModel tableModel;
/** 表格 */
protected JTable table;
/** 版权面板 */
protected JPanel copyrightPanel;
/** json请求的地址 */
protected String url;
/** 界面刷新的间隔时间，单位为毫秒. */
protected long activeTime;
/** 上次刷新的时间 */
protected long lastRefreshTime;
/** 与界面管理的MBeanServerConnection对象 */
protected MBeanServerConnection conn;
private final static Log LOG = LogFactory.getLog(DruidPanel.class);
/**
* 根据传入的刷新时间间隔来初始化.
*
* @param activeTime 刷新时间间隔
*/
protected DruidPanel(long activeTime){
this.activeTime = activeTime;
}
/**
* 初始化刷新时间间隔为默认值
*/
protected DruidPanel(){
activeTime = DEFAULT_ACTIVE_TIME;
}
/**
* 调用完service之后，各个子类对于解析后的数据的具体处理
*
* @param data 解析后的数据
*/
protected abstract void tableDataProcess(ArrayList> data);
/**
* 如果是第一次调用，则生成表格对象；否则根据当前时间来和上次刷新时间的间隔，
* 是否大于对象初始化时设定的时间间隔来判断是否刷新表格数据。
*
* @param url service的地址
* @param conn MBeanServerConnection对象
* @throws Exception
*/
protected void addOrRefreshTable(String url) throws Exception {
if (url != null) {
boolean needRefresh = false;
long timeNow = new Date().getTime();
if (scrollPane == null) {
table = new JTable();
scrollPane = new JScrollPane();
scrollPane.setAutoscrolls(true);
scrollPane.setBorder((TitledBorder) BorderFactory.createTitledBorder("数据区"));
setLayout(null);
scrollPane.setBounds(10, 10, getWidth() - 20, getHeight() - 80);
this.add(scrollPane);
copyrightPanel = new JPanel();
copyrightPanel.setBorder((TitledBorder) BorderFactory.createTitledBorder("版权区"));
JLabel authorInfo = new JLabel(COPYRIGHT_STRING);
copyrightPanel.add(authorInfo);
this.add(copyrightPanel);
copyrightPanel.setBounds(10, getHeight() - 60, getWidth() - 20, 60);
needRefresh = true;
lastRefreshTime = timeNow;
this.addComponentListener(new ComponentListener() {
@Override
public void componentShown(ComponentEvent arg0) {
}
@Override
public void componentResized(ComponentEvent arg0) {
scrollPane.setBounds(10, 10, getWidth() - 20, getHeight() - 80);
copyrightPanel.setBounds(10, getHeight() - 60, getWidth() - 20, 60);
}
@Override
public void componentMoved(ComponentEvent arg0) {
}
@Override
public void componentHidden(ComponentEvent arg0) {
}
});
} else {
if (lastRefreshTime + activeTime < timeNow) {
needRefresh = true;
lastRefreshTime = timeNow;
}
}
if (needRefresh) {
LOG.debug("refresh" + timeNow);
ArrayList> data = TableDataProcessor.parseData(TableDataProcessor.getData(url,
conn));
if (data != null) {
tableDataProcess(data);
}
}
} else {
// url不存在
LOG.warn("url不存在");
}
}
protected Object doInBackground(JConsoleContext context) throws Exception {
doInBackground(context.getMBeanServerConnection());
return null;
}
protected void doInBackground(MBeanServerConnection conn) {
if (conn == null) {
LOG.warn("MBeanServerConnection is null");
return;
}
try {
this.conn = conn;
addOrRefreshTable(url);
} catch (Exception e) {
LOG.warn("", e);
}
}
}