1 files changed, 101 insertions, 0 deletions
diff --git a/src/IvyDaemon.java b/src/IvyDaemon.java
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+++ b/src/IvyDaemon.java
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+/**
+ * sample implementation of an Ivy Daemon, like ivyd.
+ * @author	Yannick Jestin
+ * @author	<a href="http://www.tls.cena.fr/products/ivy/">http://www.tls.cena.fr/products/ivy/</a>
+ */
+package fr.dgac.ivy ;
+
+import java.io.*;
+import java.net.*;
+import gnu.getopt.Getopt;
+
+/**
+ * toy tool to send anonymous messages to an Ivy bus through a simple tcp
+ * socket.
+ * IvyDaemon runs in the background and forwards all the incoming trafic to
+ * the bus, line by line. The default port is 3456.
+ *
+ * @author	Yannick Jestin
+ * @author	<a href="http://www.tls.cena.fr/products/ivy/">http://www.tls.cena.fr/products/ivy/</a>
+ */
+class IvyDaemon implements Runnable {
+
+  public static int DEFAULT_SERVICE_PORT = 3456 ;
+  ServerSocket serviceSocket;
+  boolean isRunning=false;
+  Ivy bus;
+
+  public static void main(String[] args) {
+    Getopt opt = new Getopt("IvyDaemon",args,"b:dp:");
+    int c;
+    int servicePort = DEFAULT_SERVICE_PORT;
+    String domain=Ivy.DEFAULT_DOMAIN;
+    while ((c = opt.getopt()) != -1) switch (c) {
+    case 'b':
+      domain=opt.getOptarg();
+      break;
+    case 'd':
+      System.setProperty("IVY_DEBUG","yes");
+      break;
+    case 'p':
+      String s="";
+      try {
+        servicePort = Integer.parseInt(s=opt.getOptarg());
+      } catch (NumberFormatException nfe) {
+        System.out.println("Invalid port number: " + s +
+	 "switching to default port "+servicePort);
+      }
+      break;
+    default:
+    }
+    IvyDaemon d = new IvyDaemon(domain,servicePort);
+  }
+
+  IvyDaemon(String domain,int servicePort) {
+    // connexion to the Bus
+    try {
+      bus=new Ivy("IvyDaemon","IvyDaemon ready",null);
+      System.out.println("broadcasting on "+domain);
+      bus.start(domain);
+      serviceSocket = new ServerSocket(servicePort) ;
+      System.out.println("listening on "+servicePort);
+      isRunning=true;
+      (new Thread(this)).start();  // loops on the service Socket, awaiting connexion
+    } catch (IvyException ie) {
+      System.out.println("Caught an exception. quitting. "+ie.getMessage());
+    } catch (IOException ioe) {
+      System.out.println("Caught an IOexception. quitting. "+ioe.getMessage());
+    }
+  }
+
+  /*
+   * the service socket reader. 
+   * it could be a thread, but as long as we've got one ....
+   */
+  public void run() {
+    while(isRunning){
+      try {
+        Socket socket = serviceSocket.accept();
+	new SubReader(
+	  new BufferedReader(new InputStreamReader(socket.getInputStream())));
+      } catch( IOException e ) {
+	System.out.println("DEBUG TCP socket reader caught an exception " + e.getMessage());
+      }
+    }
+  }
+
+  class SubReader extends Thread {
+    BufferedReader in;
+    SubReader(BufferedReader in) {this.in=in;start();}
+    public void run() {
+      String msg = null;
+      try {
+        while ( ((msg=in.readLine()) != null )) { bus.sendMsg(msg); }
+      } catch (IOException ioe) {
+        System.out.println("exception ..." + ioe.getMessage());
+      }
+    }
+  } // subclass SubReader
+
+} // class IvyDaemon
+// EOF