*) adding support for delayed shutdown

   - needed by Ismael to receive the Steering page properly on shutdown
   - now the steering page should always be displayed properly in the web browser

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2129 6c8d7289-2bf4-0310-a012-ef5d649a1542

htroot/Steering.java

@@ -69,7 +69,7 @@ public static serverObjects respond(httpHeader header, serverObjects post, serve
 
         if (post.containsKey("shutdown")) {
             ss.setConfig("restart", "false");
-            sb.terminate();
+            sb.terminate(3000);
             prop.put("info", 3);
             return prop;
         }

source/de/anomic/plasma/plasmaSwitchboard.java

@@ -2219,6 +2219,11 @@ public boolean dhtTransferProcess(plasmaDHTChunk dhtChunk, int peerCount) {
         }
     }
 
+    public void terminate(long delay) {
+        if (delay <= 0) throw new IllegalArgumentException("The shutdown delay must be greater than 0.");
+        (new delayedShutdown(this,delay)).start();
+    }
+
     public void terminate() {
         this.terminate = true;
         this.shutdownSync.V();
@@ -2233,3 +2238,21 @@ public boolean waitForShutdown() throws InterruptedException {
         return this.terminate;
     }
 }
+
+class delayedShutdown extends Thread {
+    private plasmaSwitchboard sb;
+    private long delay;
+    public delayedShutdown(plasmaSwitchboard sb, long delay) {
+        this.sb = sb;
+        this.delay = delay;
+    }
+
+    public void run() {
+        try {
+            Thread.sleep(delay);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        this.sb.terminate();
+    }
+}