add insert listener
[jSite2.git] / src / net / pterodactylus / jsite / core / NodeManager.java
index f772dc2..922a85a 100644 (file)
@@ -40,15 +40,17 @@ import java.util.logging.Logger;
 
 import net.pterodactylus.fcp.highlevel.HighLevelClient;
 import net.pterodactylus.fcp.highlevel.HighLevelClientListener;
+import net.pterodactylus.fcp.highlevel.HighLevelException;
 import net.pterodactylus.fcp.highlevel.KeyGenerationResult;
+import net.pterodactylus.jsite.util.IdGenerator;
 import net.pterodactylus.util.io.Closer;
 import net.pterodactylus.util.logging.Logging;
+import net.pterodactylus.util.number.Hex;
 
 /**
  * TODO
  * 
  * @author David ‘Bombe’ Roden <bombe@freenetproject.org>
- * @version $Id$
  */
 public class NodeManager implements Iterable<Node>, PropertyChangeListener, HighLevelClientListener {
 
@@ -70,6 +72,9 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
        /** All nodes. */
        private List<Node> nodes = Collections.synchronizedList(new ArrayList<Node>());
 
+       /** Map from node ID to node. */
+       private Map<String, Node> idNodes = Collections.synchronizedMap(new HashMap<String, Node>());
+
        /** All FCP connections. */
        private Map<Node, HighLevelClient> nodeClients = Collections.synchronizedMap(new HashMap<Node, HighLevelClient>());
 
@@ -120,7 +125,8 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *            The node that was added.
         */
        private void fireNodeAdded(Node node) {
-               for (NodeListener nodeListener: nodeListeners) {
+               logger.log(Level.FINEST, "firing nodeAdded event with [node=" + node + "]");
+               for (NodeListener nodeListener : nodeListeners) {
                        nodeListener.nodeAdded(node);
                }
        }
@@ -132,7 +138,8 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *            The node that was removed
         */
        private void fireNodeRemoved(Node node) {
-               for (NodeListener nodeListener: nodeListeners) {
+               logger.log(Level.FINEST, "firing nodeRemoved event with [node=" + node + "]");
+               for (NodeListener nodeListener : nodeListeners) {
                        nodeListener.nodeRemoved(node);
                }
        }
@@ -144,7 +151,8 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *            The node that is now connected
         */
        private void fireNodeConnected(Node node) {
-               for (NodeListener nodeListener: nodeListeners) {
+               logger.log(Level.FINEST, "firing nodeConnected event with [node=" + node + "]");
+               for (NodeListener nodeListener : nodeListeners) {
                        nodeListener.nodeConnected(node);
                }
        }
@@ -158,7 +166,8 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *            The cause of the failure
         */
        private void fireNodeConnectionFailed(Node node, Throwable cause) {
-               for (NodeListener nodeListener: nodeListeners) {
+               logger.log(Level.FINEST, "firing nodeConnectionFailed event with [node=" + node + ",cause=" + cause + "]");
+               for (NodeListener nodeListener : nodeListeners) {
                        nodeListener.nodeConnectionFailed(node, cause);
                }
        }
@@ -173,7 +182,8 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *            if there was no exception
         */
        private void fireNodeDisconnected(Node node, Throwable throwable) {
-               for (NodeListener nodeListener: nodeListeners) {
+               logger.log(Level.FINEST, "firing nodeDisconnected event with [node=" + node + ",throwable=" + throwable + "]");
+               for (NodeListener nodeListener : nodeListeners) {
                        nodeListener.nodeDisconnected(node, throwable);
                }
        }
@@ -221,6 +231,7 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *             if an I/O error occurs loading the nodes
         */
        public void load() throws IOException {
+               logger.log(Level.FINEST, "load()");
                File directoryFile = new File(directory);
                File nodeFile = new File(directoryFile, "nodes.properties");
                if (!nodeFile.exists() || !nodeFile.isFile() || !nodeFile.canRead()) {
@@ -238,6 +249,10 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
                List<Node> loadedNodes = new ArrayList<Node>();
                while (nodeProperties.containsKey("nodes." + ++nodeIndex + ".name")) {
                        String nodePrefix = "nodes." + nodeIndex;
+                       String nodeId = nodeProperties.getProperty(nodePrefix + ".id");
+                       if (nodeId == null) {
+                               nodeId = Hex.toHex(IdGenerator.generateId());
+                       }
                        String nodeName = nodeProperties.getProperty(nodePrefix + ".name");
                        if (!Verifier.verifyNodeName(nodeName)) {
                                logger.log(Level.WARNING, "invalid node name “" + nodeName + "”, skipping…");
@@ -262,15 +277,16 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
                                continue;
                        }
                        Node newNode = new Node();
+                       newNode.setId(nodeId);
                        newNode.setName(nodeName);
                        newNode.setHostname(nodeHostname);
                        newNode.setPort(nodePort);
                        loadedNodes.add(newNode);
                }
-               logger.fine("loaded " + loadedNodes.size() + " nodes from config");
+               logger.log(Level.FINE, "loaded " + loadedNodes.size() + " nodes from config");
                synchronized (syncObject) {
                        nodes.clear();
-                       for (Node node: loadedNodes) {
+                       for (Node node : loadedNodes) {
                                addNode(node);
                        }
                }
@@ -283,6 +299,7 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *             if an I/O error occurs saving the nodes
         */
        public void save() throws IOException {
+               logger.log(Level.FINEST, "save()");
                File directoryFile = new File(directory);
                if (!directoryFile.exists()) {
                        if (!directoryFile.mkdirs()) {
@@ -291,8 +308,9 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
                }
                Properties nodeProperties = new Properties();
                int nodeIndex = -1;
-               for (Node node: nodes) {
+               for (Node node : nodes) {
                        String nodePrefix = "nodes." + ++nodeIndex;
+                       nodeProperties.setProperty(nodePrefix + ".id", node.getId());
                        nodeProperties.setProperty(nodePrefix + ".name", node.getName());
                        nodeProperties.setProperty(nodePrefix + ".hostname", node.getHostname());
                        nodeProperties.setProperty(nodePrefix + ".port", String.valueOf(node.getPort()));
@@ -317,13 +335,15 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *         if the node was not added because it was already known
         */
        public boolean addNode(Node node) {
+               logger.log(Level.FINEST, "addNode(node=" + node + ")");
                if (nodes.contains(node)) {
-                       logger.warning("was told to add already known node: " + node);
+                       logger.log(Level.WARNING, "was told to add already known node: " + node);
                        return false;
                }
                node.addPropertyChangeListener(this);
                HighLevelClient highLevelClient = new HighLevelClient(clientName);
                nodes.add(node);
+               idNodes.put(node.getId(), node);
                clientNodes.put(highLevelClient, node);
                nodeClients.put(node, highLevelClient);
                highLevelClient.addHighLevelClientListener(this);
@@ -339,6 +359,7 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *            The node to remove
         */
        public void removeNode(Node node) {
+               logger.log(Level.FINEST, "removeNode(node=" + node + ")");
                synchronized (syncObject) {
                        if (!nodes.contains(node)) {
                                return;
@@ -346,6 +367,8 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
                        if (nodeClients.containsKey(node)) {
                                disconnect(node);
                        }
+                       nodes.remove(node);
+                       idNodes.remove(node.getId());
                        node.removePropertyChangeListener(this);
                        fireNodeRemoved(node);
                }
@@ -358,10 +381,11 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *            The node to connect to
         */
        public void connect(Node node) {
+               logger.log(Level.FINEST, "connect(node=" + node + ")");
                HighLevelClient highLevelClient;
                highLevelClient = nodeClients.get(node);
                if (highLevelClient == null) {
-                       logger.warning("was told to connect to unknown node: " + node);
+                       logger.log(Level.WARNING, "was told to connect to unknown node: " + node);
                        return;
                }
                try {
@@ -380,6 +404,7 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         *            The node to disconnect
         */
        public void disconnect(Node node) {
+               logger.log(Level.FINEST, "disconnect(node=" + node + ")");
                synchronized (syncObject) {
                        if (!nodes.contains(node)) {
                                return;
@@ -423,23 +448,41 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
        }
 
        /**
+        * Returns the node identified by the given ID.
+        * 
+        * @param id
+        *            The ID of the node
+        * @return The node with the given ID, or <code>null</code> if no such
+        *         node was found
+        */
+       Node getNode(String id) {
+               return idNodes.get(id);
+       }
+
+       /**
         * Generates a new SSK key pair.
         * 
         * @return An array with the private key at index <code>0</code> and the
         *         public key at index <code>1</code>
         * @throws IOException
         *             if an I/O error occurs communicating with the node
+        * @throws JSiteException
+        *             if there is a problem with the node
         */
-       public String[] generateKeyPair() throws IOException {
-               if (!nodes.isEmpty()) {
-                       Node node = nodes.get(0);
-                       HighLevelClient highLevelClient = nodeClients.get(node);
-                       try {
-                               KeyGenerationResult keyGenerationResult = highLevelClient.generateKey().getResult();
-                               return new String[] { keyGenerationResult.getInsertURI(), keyGenerationResult.getRequestURI() };
-                       } catch (InterruptedException e) {
-                               /* ignore. */
-                       }
+       public String[] generateKeyPair() throws IOException, JSiteException {
+               logger.log(Level.FINEST, "generateKeyPair()");
+               if (nodes.isEmpty()) {
+                       throw new NoNodeException("no node configured");
+               }
+               Node node = nodes.get(0);
+               HighLevelClient highLevelClient = nodeClients.get(node);
+               try {
+                       KeyGenerationResult keyGenerationResult = highLevelClient.generateKey().getResult();
+                       return new String[] { keyGenerationResult.getInsertURI(), keyGenerationResult.getRequestURI() };
+               } catch (HighLevelException hle1) {
+                       throw new BackendException(hle1);
+               } catch (InterruptedException e) {
+                       /* ignore. */
                }
                return null;
        }
@@ -456,7 +499,7 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         * {@inheritDoc}
         */
        public void clientConnected(HighLevelClient highLevelClient) {
-               logger.log(Level.FINER, "clientConnected(c=" + highLevelClient + ")");
+               logger.log(Level.FINEST, "clientConnected(highLevelClient=" + highLevelClient + ")");
                Node node = clientNodes.get(highLevelClient);
                if (node == null) {
                        logger.log(Level.WARNING, "got event for unknown client");
@@ -469,7 +512,7 @@ public class NodeManager implements Iterable<Node>, PropertyChangeListener, High
         * {@inheritDoc}
         */
        public void clientDisconnected(HighLevelClient highLevelClient, Throwable throwable) {
-               logger.log(Level.FINER, "clientDisconnected(c=" + highLevelClient + ",t=" + throwable + ")");
+               logger.log(Level.FINEST, "clientDisconnected(highLevelClient=" + highLevelClient + ",throwable=" + throwable + ")");
                synchronized (syncObject) {
                        Node node = clientNodes.get(highLevelClient);
                        if (node == null) {