Move Tuscany from Incubator to top level.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@668359 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 125 insertions, 0 deletions

diff --git a/sandbox/old/contrib/discovery/jxta/src/main/java/org/apache/tuscany/service/discovery/jxta/pdp/PeerListener.java b/sandbox/old/contrib/discovery/jxta/src/main/java/org/apache/tuscany/service/discovery/jxta/pdp/PeerListener.java
new file mode 100644
index 0000000000..adc67ce263
--- /dev/null
+++ b/sandbox/old/contrib/discovery/jxta/src/main/java/org/apache/tuscany/service/discovery/jxta/pdp/PeerListener.java
@@ -0,0 +1,125 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.tuscany.service.discovery.jxta.pdp;
+
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.apache.tuscany.service.discovery.jxta.JxtaException;
+
+import net.jxta.discovery.DiscoveryEvent;
+import net.jxta.discovery.DiscoveryListener;
+import net.jxta.discovery.DiscoveryService;
+import net.jxta.peer.PeerID;
+import net.jxta.protocol.DiscoveryResponseMsg;
+import net.jxta.protocol.PeerAdvertisement;
+
+/**
+ * Listener that keeps track of peers in the same peer group.
+ * 
+ * @version $Revision$ $Date$
+ *
+ */
+public class PeerListener implements DiscoveryListener {
+    
+    /** Discovery service to use. */
+    private DiscoveryService discoveryService;
+    
+    /** Interval for sending discivery messages. */
+    private long interval;
+    
+    /** Liveness indicator. */
+    private AtomicBoolean live = new AtomicBoolean();
+    
+    /** Owning runtime. */
+    private String runtimeId;
+    
+    /** Available peers. */
+    private Map<String, PeerID> availablePeers = new HashMap<String, PeerID>();
+    
+    /**
+     * Initializes the JXTA discovery service.
+     * @param discoveryService JXTA discovery service.
+     * @param interval Interval between sending discovery messages.
+     * @param runtimeId Runtime that owns this peer.
+     */
+    public PeerListener(DiscoveryService discoveryService, long interval, String runtimeId) {
+        this.discoveryService = discoveryService;
+        this.interval = interval;
+        this.runtimeId = runtimeId;
+    }
+
+    /**
+     * Sends discovery messages for peer advertisements.
+     */
+    public void start() {
+
+        live.set(true);
+        discoveryService.addDiscoveryListener(this);
+        while(live.get()) {
+            discoveryService.getRemoteAdvertisements(null, DiscoveryService.PEER, null, null, 5);
+            try {
+                Thread.sleep(interval);
+            } catch(InterruptedException ex) {
+                throw new JxtaException(ex);
+            }
+
+        }
+        
+    }
+    
+    /**
+     * returns the peer id for the runtime id.
+     * @param runtimeId Runtime id for which peer id is requested.
+     * @return Peer id.
+     */
+    public synchronized PeerID getPeerId(String runtimeId) {
+        return availablePeers.get(runtimeId);
+    }
+
+    /**
+     * Listens for discovery event.
+     */
+    public synchronized void discoveryEvent(DiscoveryEvent event) {
+
+        DiscoveryResponseMsg res = event.getResponse();
+        Enumeration en = res.getAdvertisements();
+        if (en != null ) {
+            while (en.hasMoreElements()) {
+                PeerAdvertisement adv = (PeerAdvertisement) en.nextElement();
+                String peerName = adv.getName();
+                if(!runtimeId.equals(peerName)) {
+                    availablePeers.put(adv.getName(), adv.getPeerID());
+                }
+            }
+        }
+        System.err.println("Peer view for " + runtimeId + ": " + availablePeers.keySet());
+        
+    }
+    
+    /**
+     * Stops the pipe listener.
+     */
+    public void stop() {
+        live.set(false);
+    }
+
+}