/*
- * Sone - SoneDownloader.java - Copyright © 2010 David Roden
+ * Sone - SoneDownloader.java - Copyright © 2010–2013 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
package net.pterodactylus.sone.core;
+import static net.pterodactylus.sone.data.Sone.TO_FREENET_URI;
+
+import java.io.InputStream;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
+import net.pterodactylus.sone.core.FreenetInterface.Fetched;
import net.pterodactylus.sone.data.Sone;
+import net.pterodactylus.sone.data.Sone.SoneStatus;
+import net.pterodactylus.util.io.Closer;
import net.pterodactylus.util.logging.Logging;
import net.pterodactylus.util.service.AbstractService;
+
import freenet.client.FetchResult;
+import freenet.keys.FreenetURI;
+import freenet.support.api.Bucket;
/**
* The Sone downloader is responsible for download Sones as they are updated.
/** The logger. */
private static final Logger logger = Logging.getLogger(SoneDownloader.class);
+ /** The maximum protocol version. */
+ private static final int MAX_PROTOCOL_VERSION = 0;
+
+ /** The core. */
+ private final Core core;
+
/** The Freenet interface. */
private final FreenetInterface freenetInterface;
/**
* Creates a new Sone downloader.
*
+ * @param core
+ * The core
* @param freenetInterface
* The Freenet interface
*/
- public SoneDownloader(FreenetInterface freenetInterface) {
- super("Sone Downloader");
+ public SoneDownloader(Core core, FreenetInterface freenetInterface) {
+ super("Sone Downloader", false);
+ this.core = core;
this.freenetInterface = freenetInterface;
}
* The Sone to add
*/
public void addSone(Sone sone) {
- if (sones.add(sone)) {
- freenetInterface.registerUsk(sone, this);
+ if (!sones.add(sone)) {
+ freenetInterface.unregisterUsk(sone);
+ }
+ freenetInterface.registerUsk(sone, this);
+ }
+
+ /**
+ * Removes the given Sone from the downloader.
+ *
+ * @param sone
+ * The Sone to stop watching
+ */
+ public void removeSone(Sone sone) {
+ if (sones.remove(sone)) {
+ freenetInterface.unregisterUsk(sone);
}
}
* The Sone to fetch
*/
public void fetchSone(Sone sone) {
- logger.log(Level.FINE, "Starting fetch for Sone “%s” from %s…", new Object[] { sone, sone.getRequestUri().setMetaString(new String[] { "sone.xml" }) });
- FetchResult fetchResult = freenetInterface.fetchUri(sone.getRequestUri().setMetaString(new String[] { "sone.xml" }));
- logger.log(Level.FINEST, "Got %d bytes back.", fetchResult.size());
+ fetchSone(sone, TO_FREENET_URI.apply(sone).sskForUSK());
+ }
+
+ /**
+ * Fetches the updated Sone. This method can be used to fetch a Sone from a
+ * specific URI.
+ *
+ * @param sone
+ * The Sone to fetch
+ * @param soneUri
+ * The URI to fetch the Sone from
+ */
+ public void fetchSone(Sone sone, FreenetURI soneUri) {
+ fetchSone(sone, soneUri, false);
+ }
+
+ /**
+ * Fetches the Sone from the given URI.
+ *
+ * @param sone
+ * The Sone to fetch
+ * @param soneUri
+ * The URI of the Sone to fetch
+ * @param fetchOnly
+ * {@code true} to only fetch and parse the Sone, {@code false}
+ * to {@link Core#updateSone(Sone) update} it in the core
+ * @return The downloaded Sone, or {@code null} if the Sone could not be
+ * downloaded
+ */
+ public Sone fetchSone(Sone sone, FreenetURI soneUri, boolean fetchOnly) {
+ logger.log(Level.FINE, String.format("Starting fetch for Sone “%s” from %s…", sone, soneUri));
+ FreenetURI requestUri = soneUri.setMetaString(new String[] { "sone.xml" });
+ sone.setStatus(SoneStatus.downloading);
+ try {
+ Fetched fetchResults = freenetInterface.fetchUri(requestUri);
+ if (fetchResults == null) {
+ /* TODO - mark Sone as bad. */
+ return null;
+ }
+ logger.log(Level.FINEST, String.format("Got %d bytes back.", fetchResults.getFetchResult().size()));
+ Sone parsedSone = parseSone(sone, fetchResults.getFetchResult(), fetchResults.getFreenetUri());
+ if (parsedSone != null) {
+ if (!fetchOnly) {
+ parsedSone.setStatus((parsedSone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
+ core.updateSone(parsedSone);
+ addSone(parsedSone);
+ }
+ }
+ return parsedSone;
+ } finally {
+ sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
+ }
+ }
+
+ /**
+ * Parses a Sone from a fetch result.
+ *
+ * @param originalSone
+ * The sone to parse, or {@code null} if the Sone is yet unknown
+ * @param fetchResult
+ * The fetch result
+ * @param requestUri
+ * The requested URI
+ * @return The parsed Sone, or {@code null} if the Sone could not be parsed
+ */
+ public Sone parseSone(Sone originalSone, FetchResult fetchResult, FreenetURI requestUri) {
+ logger.log(Level.FINEST, String.format("Parsing FetchResult (%d bytes, %s) for %s…", fetchResult.size(), fetchResult.getMimeType(), originalSone));
+ Bucket soneBucket = fetchResult.asBucket();
+ InputStream soneInputStream = null;
+ try {
+ soneInputStream = soneBucket.getInputStream();
+ Sone parsedSone = parseSone(originalSone, soneInputStream);
+ if (parsedSone != null) {
+ parsedSone.modify().setLatestEdition(requestUri.getEdition()).update();
+ }
+ return parsedSone;
+ } catch (Exception e1) {
+ logger.log(Level.WARNING, String.format("Could not parse Sone from %s!", requestUri), e1);
+ } finally {
+ Closer.close(soneInputStream);
+ soneBucket.free();
+ }
+ return null;
+ }
+
+ /**
+ * Parses a Sone from the given input stream and creates a new Sone from the
+ * parsed data.
+ *
+ * @param originalSone
+ * The Sone to update
+ * @param soneInputStream
+ * The input stream to parse the Sone from
+ * @return The parsed Sone
+ */
+ public Sone parseSone(Sone originalSone, InputStream soneInputStream) {
+ return new SoneParser().parseSone(core.getDatabase(), originalSone, soneInputStream);
}
//
// SERVICE METHODS
//
- /**
- * {@inheritDoc}
- */
@Override
protected void serviceStop() {
for (Sone sone : sones) {
projects / Sone.git / blobdiff