X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fcore%2FSoneRescuer.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fcore%2FSoneRescuer.java;h=542ec4aa69596c609af5d0159afa56ca77641016;hb=bb2c8cb2d47a77bcef2d299ad4bf8e16f22a6198;hp=0000000000000000000000000000000000000000;hpb=3c7c28dad396ea710bec838550ffd54718d7999a;p=Sone.git

diff --git a/src/main/java/net/pterodactylus/sone/core/SoneRescuer.java b/src/main/java/net/pterodactylus/sone/core/SoneRescuer.java
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+++ b/src/main/java/net/pterodactylus/sone/core/SoneRescuer.java
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+/*
+ * Sone - SoneRescuer.java - Copyright © 2011 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.core;
+
+import net.pterodactylus.sone.data.Sone;
+import net.pterodactylus.util.service.AbstractService;
+import freenet.keys.FreenetURI;
+
+/**
+ * The Sone rescuer downloads older editions of a Sone and updates the currently
+ * stored Sone with it.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class SoneRescuer extends AbstractService {
+
+	/** The core. */
+	private final Core core;
+
+	/** The Sone downloader. */
+	private final SoneDownloader soneDownloader;
+
+	/** The Sone being rescued. */
+	private final Sone sone;
+
+	/** Whether the rescuer is currently fetching a Sone. */
+	private volatile boolean fetching;
+
+	/** The currently tried edition. */
+	private volatile long currentEdition;
+
+	/** Whether the last fetch was successful. */
+	private volatile boolean lastFetchSuccessful = true;
+
+	/**
+	 * Creates a new Sone rescuer.
+	 *
+	 * @param core
+	 *            The core
+	 * @param soneDownloader
+	 *            The Sone downloader
+	 * @param sone
+	 *            The Sone to rescue
+	 */
+	public SoneRescuer(Core core, SoneDownloader soneDownloader, Sone sone) {
+		super("Sone Rescuer for " + sone.getName());
+		this.core = core;
+		this.soneDownloader = soneDownloader;
+		this.sone = sone;
+		currentEdition = sone.getRequestUri().getEdition();
+	}
+
+	//
+	// ACCESSORS
+	//
+
+	/**
+	 * Returns whether the Sone rescuer is currently fetching a Sone.
+	 *
+	 * @return {@code true} if the Sone rescuer is currently fetching a Sone
+	 */
+	public boolean isFetching() {
+		return fetching;
+	}
+
+	/**
+	 * Returns the edition that is currently being downloaded.
+	 *
+	 * @return The edition that is currently being downloaded
+	 */
+	public long getCurrentEdition() {
+		return currentEdition;
+	}
+
+	/**
+	 * Returns whether the Sone rescuer can download a next edition.
+	 *
+	 * @return {@code true} if the Sone rescuer can download a next edition,
+	 *         {@code false} if the last edition was already tried
+	 */
+	public boolean hasNextEdition() {
+		return currentEdition > 0;
+	}
+
+	/**
+	 * Returns the next edition the Sone rescuer can download.
+	 *
+	 * @return The next edition the Sone rescuer can download
+	 */
+	public long getNextEdition() {
+		return currentEdition - 1;
+	}
+
+	/**
+	 * Sets the edition to rescue.
+	 *
+	 * @param edition
+	 *            The edition to rescue
+	 * @return This Sone rescuer
+	 */
+	public SoneRescuer setEdition(long edition) {
+		currentEdition = edition;
+		return this;
+	}
+
+	/**
+	 * Sets whether the last fetch was successful.
+	 *
+	 * @return {@code true} if the last fetch was successful, {@code false}
+	 *         otherwise
+	 */
+	public boolean isLastFetchSuccessful() {
+		return lastFetchSuccessful;
+	}
+
+	//
+	// ACTIONS
+	//
+
+	/**
+	 * Starts the next fetch. If you want to fetch a different edition than “the
+	 * next older one,” remember to call {@link #setEdition(long)} before
+	 * calling this method.
+	 */
+	public void startNextFetch() {
+		fetching = true;
+		notifySyncObject();
+	}
+
+	//
+	// SERVICE METHODS
+	//
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	protected void serviceRun() {
+		while (!shouldStop()) {
+			while (!shouldStop() && !fetching) {
+				sleep();
+			}
+			if (fetching) {
+				core.lockSone(sone);
+				FreenetURI soneUri = sone.getRequestUri().setKeyType("SSK").setDocName("Sone-" + currentEdition).setMetaString(new String[] { "sone.xml" });
+				System.out.println("URI: " + soneUri);
+				Sone fetchedSone = soneDownloader.fetchSone(sone, soneUri, true);
+				System.out.println("Sone: " + fetchedSone);
+				lastFetchSuccessful = (fetchedSone != null);
+				if (lastFetchSuccessful) {
+					core.updateSone(fetchedSone, true);
+				}
+				fetching = false;
+			}
+		}
+	}
+
+}