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 private Map<Node, Map<String, Request>> nodeRequests = Collections.synchronizedMap(new HashMap<Node, Map<String, Request>>());
72 * Adds a request listener.
74 * @param requestListener
75 * The request listener to add
77 public void addRequestListener(RequestListener requestListener) {
78 requestListeners.add(requestListener);
82 * Removes a request listener.
84 * @param requestListener
85 * The request listener to remove
87 public void removeRequestListener(RequestListener requestListener) {
88 requestListeners.remove(requestListener);
92 * Notifies all listeners that a request was added.
95 * The request that was added
97 private void fireRequestAdded(Request request) {
98 for (RequestListener requestListener : requestListeners) {
99 requestListener.requestAdded(request);
104 * Notifies all listeners that a request progressed.
109 private void fireRequestProgressed(Request request) {
110 for (RequestListener requestListener : requestListeners) {
111 requestListener.requestProgressed(request);
116 * Notifies all listeners that a request was removed.
119 * The request that was removed
121 private void fireRequestRemoved(Request request) {
122 for (RequestListener requestListener : requestListeners) {
123 requestListener.requestRemoved(request);
128 * Notifies all listeners that a request has finished.
130 * @see RequestListener#requestFinished(Request)
132 * The request that has finished
134 private void fireRequestFinished(Request request) {
135 for (RequestListener requestListener : requestListeners) {
136 requestListener.requestFinished(request);
141 * Notifies all listeners that a request has generated a URI.
143 * @see RequestListener#requestGeneratedURI(Request, String)
145 * The request that has generated a URI
149 private void fireRequestGeneratedURI(Request request, String uri) {
150 for (RequestListener requestListener : requestListeners) {
151 requestListener.requestGeneratedURI(request, uri);
160 * Sets the node manager to use.
165 public void setNodeManager(NodeManager nodeManager) {
166 this.nodeManager = nodeManager;
178 * Requests a list of all running requests from a node. This method will
179 * block until the request has been sent!
182 * The node to get all requests for
183 * @throws IOException
184 * if an I/O error occurs while communicating with the node
185 * @throws JSiteException
186 * if there is a problem with the node
188 private void getRequests(final Node node) throws IOException, JSiteException {
189 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
190 if (highLevelClient == null) {
191 logger.log(Level.WARNING, "no client for node: " + node);
194 final Map<String, Request> identifierRequests = Collections.synchronizedMap(new HashMap<String, Request>());
195 nodeRequests.put(node, identifierRequests);
196 HighLevelCallback<RequestListResult> requestListCallback;
198 requestListCallback = highLevelClient.getRequests();
199 requestListCallback.addHighLevelCallbackListener(new HighLevelCallbackListener<RequestListResult>() {
201 @SuppressWarnings("synthetic-access")
202 public void gotResult(HighLevelCallback<RequestListResult> highLevelCallback) {
203 RequestListResult requestListResult;
205 requestListResult = highLevelCallback.getResult();
206 } catch (InterruptedException e) {
207 logger.log(Level.SEVERE, "getResult() blocked and was interrupted");
210 for (RequestResult requestResult : requestListResult) {
211 String identifier = requestResult.getIdentifier();
212 logger.log(Level.FINER, "got identifier: " + identifier);
213 Request request = identifierRequests.get(identifier);
214 if (request == null) {
215 request = new Request(node, identifier);
217 if (request.getType() == null) {
218 if (requestResult instanceof GetRequestResult) {
219 request.setType(Type.get);
220 } else if (requestResult instanceof PutRequestResult) {
221 request.setType(Type.put);
222 } else if (requestResult instanceof PutDirRequestResult) {
223 request.setType(Type.putDir);
226 if (identifierRequests.containsKey(identifier)) {
229 identifierRequests.put(requestResult.getIdentifier(), request);
230 fireRequestAdded(request);
234 } catch (HighLevelException hle1) {
235 throw new BackendException(hle1);
240 // INTERFACE NodeListener
246 public void nodeAdded(Node node) {
247 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
248 if (highLevelClient == null) {
249 logger.warning("got nodeAdded but no high-level client: " + node);
252 highLevelClient.addHighLevelProgressListener(this);
258 public void nodeRemoved(Node node) {
259 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
260 if (highLevelClient == null) {
261 logger.warning("got nodeRemoved but no high-level client: " + node);
264 highLevelClient.removeHighLevelProgressListener(this);
270 public void nodeConnected(Node node) {
271 HighLevelClient highLevelClient = nodeManager.getHighLevelClient(node);
272 if (highLevelClient == null) {
273 logger.log(Level.WARNING, "got no high-level client for node " + node);
277 highLevelClient.setWatchGlobal(true);
279 } catch (HighLevelException hle1) {
280 logger.log(Level.WARNING, "error in backend", hle1);
281 } catch (JSiteException jse1) {
282 logger.log(Level.WARNING, "error in backend", jse1);
283 } catch (IOException e) {
284 /* ignore exception, disconnects are handled elsewhere. */
291 public void nodeConnectionFailed(Node node, Throwable cause) {
292 /* we don't care about this. */
298 public void nodeDisconnected(Node node, Throwable throwable) {
299 Map<String, Request> identifierRequests = nodeRequests.get(node);
300 if (identifierRequests == null) {
301 logger.warning("got node without request map: " + node);
304 for (Request request : identifierRequests.values()) {
305 fireRequestRemoved(request);
307 identifierRequests.clear();
311 // INTERFACE HighLevelProgressListener
315 * @see net.pterodactylus.fcp.highlevel.HighLevelProgressListener#progressReceived(HighLevelClient,
316 * String, HighLevelProgress)
318 public void progressReceived(HighLevelClient highLevelClient, String identifier, HighLevelProgress highLevelProgress) {
319 Node node = nodeManager.getNode(highLevelClient);
321 logger.warning("got high-level client without node: " + highLevelClient);
324 Map<String, Request> identifierRequests = nodeRequests.get(node);
325 if (identifierRequests == null) {
326 logger.warning("got node without request map: " + node);
327 identifierRequests = Collections.synchronizedMap(new HashMap<String, Request>());
328 nodeRequests.put(node, identifierRequests);
330 Request request = identifierRequests.get(identifier);
331 if (request == null) {
332 logger.warning("got progress for unknown request: " + identifier);
333 request = new Request(node, identifier);
334 identifierRequests.put(identifier, request);
335 fireRequestAdded(request);
337 if (highLevelProgress.isFinished()) {
338 request.setFinished(true);
339 request.setSuccessful(!highLevelProgress.isFailed());
340 fireRequestFinished(request);
341 } else if (highLevelProgress.isFetchable()) {
343 } else if (highLevelProgress.getURI() != null) {
344 request.setURI(highLevelProgress.getURI());
345 fireRequestGeneratedURI(request, highLevelProgress.getURI());
347 request.setTotalBlocks(highLevelProgress.getTotalBlocks());
348 request.setRequiredBlocks(highLevelProgress.getRequiredBlocks());
349 request.setSuccessfulBlocks(highLevelProgress.getSuccessfulBlocks());
350 request.setFailedBlocks(highLevelProgress.getFailedBlocks());
351 request.setFatallyFailedBlocks(highLevelProgress.getFatallyFailedBlocks());
352 request.setTotalFinalized(highLevelProgress.isTotalFinalized());
353 fireRequestProgressed(request);