2 * jSite2 - RequestManager.java -
3 * Copyright © 2008 David Roden
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 package net.pterodactylus.jsite.core;
22 import java.io.IOException;
23 import java.util.ArrayList;
24 import java.util.Collections;
25 import java.util.HashMap;
26 import java.util.List;
28 import java.util.logging.Level;
29 import java.util.logging.Logger;
31 import net.pterodactylus.fcp.highlevel.GetRequestResult;
32 import net.pterodactylus.fcp.highlevel.HighLevelCallback;
33 import net.pterodactylus.fcp.highlevel.HighLevelCallbackListener;
34 import net.pterodactylus.fcp.highlevel.HighLevelClient;
35 import net.pterodactylus.fcp.highlevel.HighLevelException;
36 import net.pterodactylus.fcp.highlevel.HighLevelProgress;
37 import net.pterodactylus.fcp.highlevel.HighLevelProgressListener;
38 import net.pterodactylus.fcp.highlevel.PutDirRequestResult;
39 import net.pterodactylus.fcp.highlevel.PutRequestResult;
40 import net.pterodactylus.fcp.highlevel.RequestListResult;
41 import net.pterodactylus.fcp.highlevel.RequestResult;
42 import net.pterodactylus.jsite.core.Request.Type;
43 import net.pterodactylus.util.logging.Logging;
46 * The request manager keeps track of all the request on all connected nodes.
47 * The request manager is added to the {@link NodeManager} as a
48 * {@link NodeListener} so that it can fire request-removed events in case a
49 * node is disconnected.
51 * @author David ‘Bombe’ Roden <bombe@freenetproject.org>
54 public class RequestManager implements NodeListener, HighLevelProgressListener {
57 private static final Logger logger = Logging.getLogger(RequestManager.class.getName());
59 /** Request listeners. */
60 private List<RequestListener> requestListeners = Collections.synchronizedList(new ArrayList<RequestListener>());
62 /** The node manager. */
63 private NodeManager nodeManager;
65 /** Request lists for all nodes. */
66 @SuppressWarnings("unused")
67 private Map<Node, Map<String, Request>> nodeRequests = Collections.synchronizedMap(new HashMap<Node, Map<String, Request>>());
74 * Adds a request listener.
76 * @param requestListener
77 * The request listener to add
79 public void addRequestListener(RequestListener requestListener) {
80 requestListeners.add(requestListener);
84 * Removes a request listener.
86 * @param requestListener
87 * The request listener to remove
89 public void removeRequestListener(RequestListener requestListener) {
90 requestListeners.remove(requestListener);
94 * Notifies all listeners that a request was added.
97 * The request that was added
99 private void fireRequestAdded(Request request) {
100 for (RequestListener requestListener: requestListeners) {
101 requestListener.requestAdded(request);
106 * Notifies all listeners that a request progressed.
111 private void fireRequestProgressed(Request request) {
112 for (RequestListener requestListener: requestListeners) {
113 requestListener.requestProgressed(request);
118 * Notifies all listeners that a request was removed.
121 * The request that was removed
123 private void fireRequestRemoved(Request request) {
124 for (RequestListener requestListener: requestListeners) {
125 requestListener.requestRemoved(request);
134 * Sets the node manager to use.
139 public void setNodeManager(NodeManager nodeManager) {
140 this.nodeManager = nodeManager;
152 * Requests a list of all running requests from a node. This method will
153 * block until the request has been sent!
156 * The node to get all requests for
157 * @throws IOException
158 * if an I/O error occurs while communicating with the node
159 * @throws JSiteException
160 * if there is a problem with the node
162 private void getRequests(final Node node) throws IOException, JSiteException {
163 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
164 if (highLevelClient == null) {
165 logger.log(Level.WARNING, "no client for node: " + node);
168 final Map<String, Request> identifierRequests = Collections.synchronizedMap(new HashMap<String, Request>());
169 nodeRequests.put(node, identifierRequests);
170 HighLevelCallback<RequestListResult> requestListCallback;
172 requestListCallback = highLevelClient.getRequests();
173 requestListCallback.addHighLevelCallbackListener(new HighLevelCallbackListener<RequestListResult>() {
175 @SuppressWarnings("synthetic-access")
176 public void gotResult(HighLevelCallback<RequestListResult> highLevelCallback) {
177 RequestListResult requestListResult;
179 requestListResult = highLevelCallback.getResult();
180 } catch (InterruptedException e) {
181 logger.log(Level.SEVERE, "getResult() blocked and was interrupted");
184 for (RequestResult requestResult: requestListResult) {
185 String identifier = requestResult.getIdentifier();
186 logger.log(Level.FINER, "got identifier: " + identifier);
187 Request request = identifierRequests.get(identifier);
188 if (request == null) {
189 request = new Request(node, identifier);
191 if (request.getType() == null) {
192 if (requestResult instanceof GetRequestResult) {
193 request.setType(Type.get);
194 } else if (requestResult instanceof PutRequestResult) {
195 request.setType(Type.put);
196 } else if (requestResult instanceof PutDirRequestResult) {
197 request.setType(Type.putDir);
200 if (identifierRequests.containsKey(identifier)) {
203 identifierRequests.put(requestResult.getIdentifier(), request);
204 fireRequestAdded(request);
208 } catch (HighLevelException hle1) {
209 throw new BackendException(hle1);
214 // INTERFACE NodeListener
220 public void nodeAdded(Node node) {
221 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
222 if (highLevelClient == null) {
223 logger.warning("got nodeAdded but no high-level client: " + node);
226 highLevelClient.addHighLevelProgressListener(this);
232 public void nodeRemoved(Node node) {
233 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
234 if (highLevelClient == null) {
235 logger.warning("got nodeRemoved but no high-level client: " + node);
238 highLevelClient.removeHighLevelProgressListener(this);
244 public void nodeConnected(Node node) {
245 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
246 if (highLevelClient == null) {
247 logger.log(Level.WARNING, "got no high-level client for node " + node);
251 highLevelClient.setWatchGlobal(true);
253 } catch (HighLevelException hle1) {
254 logger.log(Level.WARNING, "error in backend", hle1);
255 } catch (JSiteException jse1) {
256 logger.log(Level.WARNING, "error in backend", jse1);
257 } catch (IOException e) {
258 /* ignore exception, disconnects are handled elsewhere. */
265 public void nodeConnectionFailed(Node node, Throwable cause) {
266 /* we don't care about this. */
272 public void nodeDisconnected(Node node, Throwable throwable) {
273 Map<String, Request> identifierRequests = nodeRequests.get(node);
274 if (identifierRequests == null) {
275 logger.warning("got node without request map: " + node);
278 for (Request request: identifierRequests.values()) {
279 fireRequestRemoved(request);
281 identifierRequests.clear();
285 // INTERFACE HighLevelProgressListener
289 * @see net.pterodactylus.fcp.highlevel.HighLevelProgressListener#progressReceived(HighLevelClient,
290 * String, HighLevelProgress)
292 public void progressReceived(HighLevelClient highLevelClient, String identifier, HighLevelProgress highLevelProgress) {
293 Node node = nodeManager.getNode(highLevelClient);
295 logger.warning("got high-level client without node: " + highLevelClient);
298 Map<String, Request> identifierRequests = nodeRequests.get(node);
299 if (identifierRequests == null) {
300 logger.warning("got node without request map: " + node);
301 identifierRequests = Collections.synchronizedMap(new HashMap<String, Request>());
302 nodeRequests.put(node, identifierRequests);
304 Request request = identifierRequests.get(identifier);
305 if (request == null) {
306 logger.warning("got progress for unknown request: " + identifier);
307 request = new Request(node, identifier);
308 identifierRequests.put(identifier, request);
309 fireRequestAdded(request);
311 request.setTotalBlocks(highLevelProgress.getTotalBlocks());
312 request.setRequiredBlocks(highLevelProgress.getRequiredBlocks());
313 request.setSuccessfulBlocks(highLevelProgress.getSuccessfulBlocks());
314 request.setFailedBlocks(highLevelProgress.getFailedBlocks());
315 request.setFatallyFailedBlocks(highLevelProgress.getFatallyFailedBlocks());
316 request.setTotalFinalized(highLevelProgress.isTotalFinalized());
317 fireRequestProgressed(request);