add threadDump on home page

cat-core/src/main/java/com/dianping/cat/message/io/TcpSocketReceiver.java

@@ -69,8 +69,8 @@ public class TcpSocketReceiver implements MessageReceiver, LogEnabled {
 
 		m_queue = new LinkedBlockingQueue<ChannelBuffer>();
 
-		ExecutorService bossExecutor = Threads.forPool().getFixedThreadPool("TcpSocketReceiver-Boss", 20);
-		ExecutorService workerExecutor = Threads.forPool().getFixedThreadPool("TcpSocketReceiver-Worker", 20);
+		ExecutorService bossExecutor = Threads.forPool().getCachedThreadPool("TcpSocketReceiver-Boss");
+		ExecutorService workerExecutor = Threads.forPool().getCachedThreadPool("TcpSocketReceiver-Worker");
 		ChannelFactory factory = new NioServerSocketChannelFactory(bossExecutor, workerExecutor);
 		ServerBootstrap bootstrap = new ServerBootstrap(factory);
 

cat-home/src/main/java/com/dianping/cat/report/page/home/Action.java

@@ -3,7 +3,9 @@ package com.dianping.cat.report.page.home;
 public enum Action implements com.site.web.mvc.Action {
 	VIEW("view"),
 
-	CHECKPOINT("checkpoint");
+	CHECKPOINT("checkpoint"),
+	
+	THREAD_DUMP("threadDump");
 
 	private String m_name;
 

cat-home/src/main/java/com/dianping/cat/report/page/home/Handler.java

 package com.dianping.cat.report.page.home;
 
 import java.io.IOException;
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadInfo;
+import java.lang.management.ThreadMXBean;
 
 import javax.servlet.ServletException;
 
@@ -37,11 +40,37 @@ public class Handler implements PageHandler<Context> {
 		Model model = new Model(ctx);
 		Payload payload = ctx.getPayload();
 
-		model.setAction(Action.VIEW);
+		model.setAction(payload.getAction());
 		model.setPage(ReportPage.HOME);
 		model.setDomain(payload.getDomain());
 		model.setLongDate(payload.getDate());
 
+		switch (payload.getAction()) {
+		case THREAD_DUMP:
+			showThreadDump(model, payload);
+			break;
+		case VIEW:
+			break;
+		}
+
 		m_jspViewer.view(ctx, model);
 	}
+
+	private void showThreadDump(Model model, Payload payload) {
+		ThreadMXBean bean = ManagementFactory.getThreadMXBean();
+		ThreadInfo[] threads = bean.dumpAllThreads(true, true);
+		StringBuilder sb = new StringBuilder(8096);
+		int index = 1;
+		
+		sb.append("Threads: ").append(threads.length);
+		sb.append("<pre>");
+		
+		for (ThreadInfo thread: threads) {
+			sb.append(index++).append(": ").append(thread).append("\r\n");
+		}
+		
+		sb.append("</pre>");
+		
+		model.setContent(sb.toString());
+	}
 }

cat-home/src/main/java/com/dianping/cat/report/page/home/JspViewer.java

@@ -10,6 +10,7 @@ public class JspViewer extends BaseJspViewer<ReportPage, Action, Context, Model>
 
 		switch (action) {
 		case VIEW:
+		case THREAD_DUMP:
 			return JspFile.VIEW.getPath();
 		}
 

cat-home/src/main/java/com/dianping/cat/report/page/home/Model.java

@@ -8,10 +8,16 @@ import com.dianping.cat.report.page.AbstractReportModel;
 public class Model extends AbstractReportModel<Action, Context> {
 	private String m_domain;
 
+	private String m_content;
+
 	public Model(Context ctx) {
 		super(ctx);
 	}
 
+	public String getContent() {
+		return m_content;
+	}
+
 	@Override
 	public Action getDefaultAction() {
 		return Action.VIEW;
@@ -27,6 +33,10 @@ public class Model extends AbstractReportModel<Action, Context> {
 		return Collections.emptySet();
 	}
 
+	public void setContent(String content) {
+		m_content = content;
+	}
+
 	public void setDomain(String domain) {
 		m_domain = domain;
 	}

cat-home/src/main/webapp/jsp/report/home.jsp

 <%@ page contentType="text/html; charset=utf-8" %>
 <%@ taglib prefix="a" uri="/WEB-INF/app.tld"%>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
 <%@ taglib prefix="res" uri="http://www.unidal.org/webres"%>
 <jsp:useBean id="ctx" type="com.dianping.cat.report.page.home.Context" scope="request"/>
 <jsp:useBean id="payload" type="com.dianping.cat.report.page.home.Payload" scope="request"/>
@@ -7,6 +8,11 @@
 
 <a:body>
 
+<c:choose>
+<c:when test="${not empty model.content}">
+${model.content}
+</c:when>
+<c:otherwise>
 Welcome to <b>Central Application Tracking (CAT)</b>.
 <br>
 <br>
@@ -19,5 +25,7 @@ Welcome to <b>Central Application Tracking (CAT)</b>.
 <br>
 <br>
 <a href="?op=checkpoint&domain=${model.domain}&date=${model.date}" style="color:#FFF">Do checkpoint here</a>
+</c:otherwise>
+</c:choose>
 
 </a:body>
\ No newline at end of file