- getMsgs and getLog now both long pull. Much faster and more effecient

- New server class as a subthread of the applet
- The applet can now draw itself, and shows port and online status

ConnHandler.java

@@ -72,8 +72,7 @@ class ConnHandler implements Runnable {
 				//InetAddress addr = new InetSocketAddress("127.0.0.1");
 				if (!client.isConnected()) 
 					res.error("failed to connect!!!!!!!");
-				//"127.0.0.1", 2600); //dest, res.PORT);
-				//client.connect(addr, 2600);
+				
 				out = new PrintWriter(client.getOutputStream(), true);
 				in = new BufferedReader(new InputStreamReader(client.getInputStream()));
 			} catch (Exception e) {
@@ -92,13 +91,14 @@ class ConnHandler implements Runnable {
 				"Keep-Alive: 300\r\n" + 
 				"Connection: keep-alive\r\n" +
 				"Content-Type: application/x-www-form-urlencoded; charset=UTF-8\r\n" + 
-				"Referer: http://localhost:2600/client.html\r\n" +
+				"Referer: " + getIPAddress() + ":" + Integer.toString(res.PORT) + "/client.html\r\n" +
 				"Content-Length: " + (all.length()+2) + "\r\n" +
 				"Pragma: no-cache\r\n" + 
 				"Cache-Control: no-cache\r\n" + 
 					"\r\n");
 			out.print(all + "\n\n");
 			out.flush();
+			//res.alert("SENT: " + all);
 			//res.log("sent message");
 			//out.close();
 				
@@ -110,10 +110,12 @@ class ConnHandler implements Runnable {
 			// read http header
 			//res.log("Reading resp header");
 			try {
-				String header = in.readLine();
-				while (header.length() >= 3) {
-					//res.log("header: " + header);
-					header = in.readLine();
+				if (in.ready()) {
+					String header = in.readLine();
+					if (header.length() >= 3) {
+						//res.log("header: " + header);
+						header = in.readLine();
+					}
 				}
 			} catch (Exception e) {
 				res.error("Exception in ajaxCall (reading HTTP response header): " + e.toString());
@@ -223,7 +225,14 @@ class ConnHandler implements Runnable {
 			} else if (cmd.equals("greet")) {
 				response = getIPAddress() + ":" + res.PORT + " " + res.getNodeData("originURL") ;
 			} else if (cmd.equals("getLog")) {
+				res.debug("getLog");
 				ArrayList<String> l = res.getLog();
+				if (l.size() == 0) {
+					res.debug("logWait");
+					res.logWait();
+					l = res.getLog();
+				}
+				res.debug("process Log");
 				response = "";
 				for (int i = l.size()-1; i >= 0; i--) {
 					response +=  l.get(i) + "\n";
@@ -237,7 +246,14 @@ class ConnHandler implements Runnable {
 				res.queueMsg(req.get("req"));	
 				response = "received on " + res.PORT;
 			} else if (cmd.equals("getMsgs")) {
+				res.debug("getMsgs");
 				ArrayList<String> mq = res.getMsgs();
+				if (mq.size() == 0) {
+					res.debug("mqWait");
+					res.mqWait();
+					mq = res.getMsgs();
+				}
+				res.debug("mq process");
 				for(int i =0; i < mq.size(); i++) {
 					response += mq.get(i) + "\n\n";
 				}

Cortex.java

@@ -1,5 +1,5 @@
 import java.applet.*;
-//import java.awt.*;
+import java.awt.*;
 import java.awt.event.*;
 import javax.swing.Timer;
 import java.awt.image.*;
@@ -18,71 +18,58 @@ import javax.swing.JOptionPane.*;
 
 
 public class Cortex extends Applet {
-	//private final int PORT = 2600; // in ResManager now
-	private ServerSocket server;
-	
-	private ResManager res = new ResManager();
+
+	private Server server;	
+	private ResManager res = new ResManager(this);
 	
+	public void update(Graphics g)
+        {
+                paint(g);
+        }
+
+
+	public void paint(Graphics g) {
+		Dimension size = getSize();
+		g.setColor(Color.black);
+		g.fillRect(0, 0, (int) size.getWidth(), (int) size.getHeight());
+		
+		g.setColor(new Color(223, 200, 255));
+		g.drawString("Cortex Server",8,12);
+		
+		if(!res.killSwitch) {
+			g.setColor(new Color(40, 255, 80));
+			g.drawString("Online on port",2, 28);
+			g.drawString(Integer.toString(res.PORT), 35, 42);
+			/*if (res.mqSize() > 0) {
+				g.setColor(Color.green);
+				g.drawString(".", 80, 42);
+			} else {
+				g.setColor(Color.red);
+				g.drawString(".", 80, 42);
+			}*/
+		} else {
+			g.setColor(Color.red);
+			g.drawString("Offline", 25,28);
+		}
+	}
+
 	
-	/*URL getCodeBase() throws Exception {
-			return new URL("file:///home/dan/src/school/cpsc416/cortex/");
-	}*/
 	
 	/* main
 	 * Main HTTP server.  Accepts connections on PORT and passes them to threads 
 	 *   in the form of ConnHandlers to deal with
 	 */
 	public void init() {
-		//javax.swing.JOptionPane.showMessageDialog(null, "APPLET STARTING!!!!");
-		//res.alert("Starting...");
-		res.putNodeData("originURL", getCodeBase().toString());
-		res.reloadSite();
+		//server = 
+		new Thread(new Server(res, getCodeBase().toString(), this)).start();	
 		
-		//res.alert("Loaded site");
-		
-		boolean bound = false;
-		while(!bound)
-		{
-			try {
-				server = new ServerSocket(res.PORT);
-				bound = true;
-			} catch (IOException e) {
-				res.PORT++;
-			}
-		}
-		
-		
-		/*
+		// be reasonably sure we've secured a valid port
 		try {
-			server = new ServerSocket(res.PORT);	
-		} catch (IOException e) {
-			res.error( "It appears another Cortex Node is already running on this computer, making this one superfulous.\nShutting down..."); 
-		}*/
+			Thread.sleep(100);
+		} catch (Exception e) { /* meh */ }
+		repaint();
 		
-		/*try {
-			JSObject win = JSObject.getWindow(this);
-			win.eval("load();");
-		} catch(Exception e) {
-			res.error(e.toString());
-		}*/
-		
-		try {
-			//res.alert("running server");
-			while (!res.killSwitch) {		
-				Socket sock = server.accept();
-				//res.alert("ACCEPTED!");
-				
-				new Thread(new ConnHandler(sock, res)).start();		
-				
-				//handler.run();
-				//res.alert("RESTARTING LOOP");
-			}
-			server.close();
-		} catch (IOException e) {
-			System.out.println("IOException in init(): " + e.toString());
-			res.error( "IOException in init(): " + e.toString());
-		}
+		// HANDLE QUIT?
 
-		//res.error("QUITING!");
  	}
 }

Makefile

@@ -1,5 +1,5 @@
 Cortex.jar: Cortex.class ConnHandler.class ResManager.class
-	jar cvf Cortex.jar Cortex.class ConnHandler.class ResManager.class
+	jar cvf Cortex.jar Cortex.class Server.class ConnHandler.class ResManager.class
 	jarsigner Cortex.jar cortex_cert 
 
 ResManager.class: ResManager.java
@@ -8,6 +8,9 @@ ResManager.class: ResManager.java
 ConnHandler.class: ConnHandler.java
 	javac ConnHandler.java
 
+Server.class: Server.java
+	javac Server.java
+
 Cortex.class: Cortex.java
 	javac Cortex.java
 	

ResManager.java

@@ -1,3 +1,4 @@
+import java.applet.*;
 import java.util.HashMap;
 import javax.swing.JOptionPane.*;
 import java.util.ArrayList;
@@ -11,20 +12,27 @@ import java.net.*;
 
 class ResManager {
 	public /*final*/ int PORT = 2600;
+	private Applet applet;
+	
+	FileWriter debugFW = null;
+	BufferedWriter debugOut = null;
 
 	private HashMap<String, byte[]> site = new HashMap<String, byte[]>();
 	private HashMap<String, String> nodeData = new HashMap<String, String>();
 	
+	// Internal Activity Log
 	private ArrayList<String> log = new ArrayList<String>();
-	private boolean logLock = false;
+	//private boolean logLock = false;
 	private DateFormat logDateFormat = new SimpleDateFormat("HH:mm:ss");
 	
-	private boolean mqLock = false;
+	// Message Queue
+	//private boolean mqLock = false;
 	private ArrayList<String> msgQueue = new ArrayList<String>();
 
 	public boolean killSwitch = false;	
 	
-	public ResManager() {
+	public ResManager(Applet a) {
+		applet = a;
 	}
 	
 	public void putSite(String key, byte[] val) {
@@ -43,62 +51,74 @@ class ResManager {
 		return nodeData.get(key);
 	}
 	
-	private synchronized void logLock() {
-		while (logLock == true) {
+	public void log(String l) {
+		synchronized (log) {
+			Date d = new Date();
+			log.add(logDateFormat.format(d) + ": " + l);
+			log.notifyAll();
+			if (debugOut != null) {
 			try {
-				wait();
-			} catch (Exception e) {
-				error("logLock: " + e.toString());
+					debugOut.write(logDateFormat.format(d) + ": " + l + "\n");
+					debugOut.flush();
+				} catch (IOException e) {
+					// Fail
+				}
 			}
 		}
-		logLock = true;
-		//javax.swing.JOptionPane.showMessageDialog(null, " Locked");
-	}
-	
-	private synchronized void logUnlock() {
-		logLock = false;
-		//javax.swing.JOptionPane.showMessageDialog(null, " UnLocked");
 	}
 	
-	public synchronized void log(String l) {
-		logLock();
-		Date d = new Date();
-		log.add(logDateFormat.format(d) + ": " + l);
-		logUnlock();
+	public void debug(String l) {
+		synchronized (log) {
+			Date d = new Date();
+			try {
+				debugOut.write(logDateFormat.format(d) + ": " + l + "\n");
+				debugOut.flush();
+			} catch (IOException e) {
+				// Fail
+			}
+		}
 	}
 	
-	private synchronized void mqLock() {
-		while(mqLock == true) {
-			try { 
-				wait();
-			} catch (Exception e) {
-				error("mqLock: " + e.toString());
-			}
+	public void logWait() {
+		synchronized(log) {
+			try {
+				log.wait();
+			} catch (Exception e) { }
 		}
-		mqLock = true;
 	}
 	
-	private synchronized void mqUnlock() {
-		mqLock = false;
+	public void queueMsg(String m) {
+		synchronized (msgQueue) {
+			msgQueue.add(m);
+			msgQueue.notifyAll();
+		}
+		//applet.repaint();
 	}
 	
-	public synchronized void queueMsg(String m) {
-		mqLock();
-		msgQueue.add(m);
-		mqUnlock();
+	public void mqWait() {
+		synchronized(msgQueue) {
+			try {
+				msgQueue.wait();
+			} catch (Exception e) { }
+		}
 	}
 	
-	public synchronized ArrayList<String> getMsgs() {
-		mqLock();
-		ArrayList<String> mq = msgQueue;
-		msgQueue = new ArrayList<String>();
-		mqUnlock();
+	public ArrayList<String> getMsgs() {
+		ArrayList<String> mq;
+		synchronized(msgQueue) {
+			mq = msgQueue;
+			msgQueue = new ArrayList<String>();
+		}
+		//applet.repaint();
 		return mq;
 	}
 	
+	public int mqSize() {
+		return msgQueue.size();
+	}
 	
 	public void alert(String a) {
-		javax.swing.JOptionPane.showMessageDialog(null, a);
+		javax.swing.JOptionPane.showMessageDialog(null, Integer.toString(PORT)  + ": " + a);
 		log("ALERT> " + a);
 	}
 	
@@ -108,13 +128,13 @@ class ResManager {
 	}
 	
 	// returns the current log and RESETS it
-	public synchronized ArrayList<String> getLog() 
+	public ArrayList<String> getLog() 
 	{
-		logLock();
-		ArrayList<String> tmp = log;
-		log = new ArrayList<String>();
-		logUnlock();
-		return tmp;
+		synchronized(log) {
+			ArrayList<String> tmp = log;
+			log = new ArrayList<String>();
+			return tmp;
+		}
 	}
 	
 	public void reloadSite() {
@@ -158,22 +178,18 @@ class ResManager {
 		}
 		
 	}
-	
-	
-	/*
-	public synchronized void put(String key, String val) {
-		//javax.swing.JOptionPane.showMessageDialog(null, "putting: '" + key + "'");
-		//javax.swing.JOptionPane.showMessageDialog(null, val);
-		//data.put(key, val);
-	}
-	
-	public synchronized String get(String key) {
-		//javax.swing.JOptionPane.showMessageDialog(null, "getting: '" + key + "'");
-		//javax.swing.JOptionPane.showMessageDialog(null, "from: " + data.keySet().toString());
-		
-		//return data.get(key);
-	}*/
-
 
+	public void openDebugLog(String ip) {
+		String fname = "cortex." + ip + ":" + Integer.toString(PORT) + ".log";
+		//FileWriter debugFileW = new FileWriter("/tmp/" + fname);
+		try {
+			debugFW = new FileWriter("/tmp/" + fname);
+	        	debugOut = new BufferedWriter(debugFW);
+	        } catch (IOException e) {
+	        	debugFW = null;
+	        	debugOut = null;
+	        	error("Failed to open debug log");
+	        }
+	}	
 
 }

client.html

@@ -131,6 +131,9 @@ function getLog() {
 			var log = document.getElementById('log');
 			//alert("getLog() resp: " + resp);
 			log.value =  resp + log.value;
+			// Since getLog returns (a call back is called later)
+			// this is tail recursive friendly
+			getLog();
 		});
 	ajaxSend(http, "cmd=getLog\n\n", retfn);
 }
@@ -170,7 +173,11 @@ function getMsgs() {
 	var retfn = returnfn(http, 
 		function(resp) {
 			//log("getMsgs: len > 0");
+			log("getMsgs: " + resp);
 			queueMsgs(resp);
+			// Since getMsgs returns (a call back is called later)
+			// this is tail recursive friendly
+			getMsgs(); 
 		});
 	ajaxSend(http, "cmd=getMsgs\n\n", retfn);
 }
@@ -801,14 +808,14 @@ function cron() {
 		
 	}
 	
-	if (runCount % 5 == 0) {
+	/*if (runCount % 5 == 0) {
 		getMsgs();
-	}
+	}*/
 	
 	// once a second
 	if (runCount % 10 == 0) {
 		ping();
-		getLog();
+		//getLog();
 		setStatus();
 		checkLocks();
 		updateTestsStatus();
@@ -1845,6 +1852,9 @@ function updateFinalResults() {
 	
 
 var cronID = setInterval("cron()", 100);
+getMsgs();
+getLog();
+
 
 function page(p) {
 	// turn off all pages

shell.html

@@ -29,7 +29,7 @@
 		<input type="button" value="Load" onClick="load()" />
 		<input id="port" size="4" value="2600" />
 
-	<applet code="Cortex.class" archive="Cortex.jar" width="50" height="50" id="cortex"></applet>
+	<applet code="Cortex.class" archive="Cortex.jar" width="100" height="50" id="cortex"></applet>
 	<b>Coretex Client</b><br/>
 
 	<iframe height="400" width="600" id="client" name="client">