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>
53 public class RequestManager implements NodeListener, HighLevelProgressListener {
56 private static final Logger logger = Logging.getLogger(RequestManager.class.getName());
58 /** Request listeners. */
59 private List<RequestListener> requestListeners = Collections.synchronizedList(new ArrayList<RequestListener>());
61 /** The node manager. */
62 private NodeManager nodeManager;
64 /** Request lists for all nodes. */
65 @SuppressWarnings("unused")
66 private Map<Node, Map<String, Request>> nodeRequests = Collections.synchronizedMap(new HashMap<Node, Map<String, Request>>());
73 * Adds a request listener.
75 * @param requestListener
76 * The request listener to add
78 public void addRequestListener(RequestListener requestListener) {
79 requestListeners.add(requestListener);
83 * Removes a request listener.
85 * @param requestListener
86 * The request listener to remove
88 public void removeRequestListener(RequestListener requestListener) {
89 requestListeners.remove(requestListener);
93 * Notifies all listeners that a request was added.
96 * The request that was added
98 private void fireRequestAdded(Request request) {
99 for (RequestListener requestListener : requestListeners) {
100 requestListener.requestAdded(request);
105 * Notifies all listeners that a request progressed.
110 private void fireRequestProgressed(Request request) {
111 for (RequestListener requestListener : requestListeners) {
112 requestListener.requestProgressed(request);
117 * Notifies all listeners that a request was removed.
120 * The request that was removed
122 private void fireRequestRemoved(Request request) {
123 for (RequestListener requestListener : requestListeners) {
124 requestListener.requestRemoved(request);
129 * Notifies all listeners that a request has finished.
131 * @see RequestListener#requestFinished(Request)
133 * The request that has finished
135 private void fireRequestFinished(Request request) {
136 for (RequestListener requestListener : requestListeners) {
137 requestListener.requestFinished(request);
142 * Notifies all listeners that a request has generated a URI.
144 * @see RequestListener#requestGeneratedURI(Request, String)
146 * The request that has generated a URI
150 private void fireRequestGeneratedURI(Request request, String uri) {
151 for (RequestListener requestListener : requestListeners) {
152 requestListener.requestGeneratedURI(request, uri);
161 * Sets the node manager to use.
166 public void setNodeManager(NodeManager nodeManager) {
167 this.nodeManager = nodeManager;
179 * Requests a list of all running requests from a node. This method will
180 * block until the request has been sent!
183 * The node to get all requests for
184 * @throws IOException
185 * if an I/O error occurs while communicating with the node
186 * @throws JSiteException
187 * if there is a problem with the node
189 private void getRequests(final Node node) throws IOException, JSiteException {
190 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
191 if (highLevelClient == null) {
192 logger.log(Level.WARNING, "no client for node: " + node);
195 final Map<String, Request> identifierRequests = Collections.synchronizedMap(new HashMap<String, Request>());
196 nodeRequests.put(node, identifierRequests);
197 HighLevelCallback<RequestListResult> requestListCallback;
199 requestListCallback = highLevelClient.getRequests();
200 requestListCallback.addHighLevelCallbackListener(new HighLevelCallbackListener<RequestListResult>() {
202 @SuppressWarnings("synthetic-access")
203 public void gotResult(HighLevelCallback<RequestListResult> highLevelCallback) {
204 RequestListResult requestListResult;
206 requestListResult = highLevelCallback.getResult();
207 } catch (InterruptedException e) {
208 logger.log(Level.SEVERE, "getResult() blocked and was interrupted");
211 for (RequestResult requestResult : requestListResult) {
212 String identifier = requestResult.getIdentifier();
213 logger.log(Level.FINER, "got identifier: " + identifier);
214 Request request = identifierRequests.get(identifier);
215 if (request == null) {
216 request = new Request(node, identifier);
218 if (request.getType() == null) {
219 if (requestResult instanceof GetRequestResult) {
220 request.setType(Type.get);
221 } else if (requestResult instanceof PutRequestResult) {
222 request.setType(Type.put);
223 } else if (requestResult instanceof PutDirRequestResult) {
224 request.setType(Type.putDir);
227 if (identifierRequests.containsKey(identifier)) {
230 identifierRequests.put(requestResult.getIdentifier(), request);
231 fireRequestAdded(request);
235 } catch (HighLevelException hle1) {
236 throw new BackendException(hle1);
241 // INTERFACE NodeListener
247 public void nodeAdded(Node node) {
248 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
249 if (highLevelClient == null) {
250 logger.warning("got nodeAdded but no high-level client: " + node);
253 highLevelClient.addHighLevelProgressListener(this);
259 public void nodeRemoved(Node node) {
260 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
261 if (highLevelClient == null) {
262 logger.warning("got nodeRemoved but no high-level client: " + node);
265 highLevelClient.removeHighLevelProgressListener(this);
271 public void nodeConnected(Node node) {
272 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
273 if (highLevelClient == null) {
274 logger.log(Level.WARNING, "got no high-level client for node " + node);
278 highLevelClient.setWatchGlobal(true);
280 } catch (HighLevelException hle1) {
281 logger.log(Level.WARNING, "error in backend", hle1);
282 } catch (JSiteException jse1) {
283 logger.log(Level.WARNING, "error in backend", jse1);
284 } catch (IOException e) {
285 /* ignore exception, disconnects are handled elsewhere. */
292 public void nodeConnectionFailed(Node node, Throwable cause) {
293 /* we don't care about this. */
299 public void nodeDisconnected(Node node, Throwable throwable) {
300 Map<String, Request> identifierRequests = nodeRequests.get(node);
301 if (identifierRequests == null) {
302 logger.warning("got node without request map: " + node);
305 for (Request request : identifierRequests.values()) {
306 fireRequestRemoved(request);
308 identifierRequests.clear();
312 // INTERFACE HighLevelProgressListener
316 * @see net.pterodactylus.fcp.highlevel.HighLevelProgressListener#progressReceived(HighLevelClient,
317 * String, HighLevelProgress)
319 public void progressReceived(HighLevelClient highLevelClient, String identifier, HighLevelProgress highLevelProgress) {
320 Node node = nodeManager.getNode(highLevelClient);
322 logger.warning("got high-level client without node: " + highLevelClient);
325 Map<String, Request> identifierRequests = nodeRequests.get(node);
326 if (identifierRequests == null) {
327 logger.warning("got node without request map: " + node);
328 identifierRequests = Collections.synchronizedMap(new HashMap<String, Request>());
329 nodeRequests.put(node, identifierRequests);
331 Request request = identifierRequests.get(identifier);
332 if (request == null) {
333 logger.warning("got progress for unknown request: " + identifier);
334 request = new Request(node, identifier);
335 identifierRequests.put(identifier, request);
336 fireRequestAdded(request);
338 if (highLevelProgress.isFinished()) {
339 request.setFinished(true);
340 request.setSuccessful(!highLevelProgress.isFailed());
341 fireRequestFinished(request);
342 } else if (highLevelProgress.isFetchable()) {
344 } else if (highLevelProgress.getURI() != null) {
345 request.setURI(highLevelProgress.getURI());
346 fireRequestGeneratedURI(request, highLevelProgress.getURI());
348 request.setTotalBlocks(highLevelProgress.getTotalBlocks());
349 request.setRequiredBlocks(highLevelProgress.getRequiredBlocks());
350 request.setSuccessfulBlocks(highLevelProgress.getSuccessfulBlocks());
351 request.setFailedBlocks(highLevelProgress.getFailedBlocks());
352 request.setFatallyFailedBlocks(highLevelProgress.getFatallyFailedBlocks());
353 request.setTotalFinalized(highLevelProgress.isTotalFinalized());
354 fireRequestProgressed(request);