/*
- * 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 java.io.IOException;
+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.data.Post;
-import net.pterodactylus.sone.data.Profile;
-import net.pterodactylus.sone.data.Reply;
+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 net.pterodactylus.util.xml.SimpleXML;
-import net.pterodactylus.util.xml.XML;
-
-import org.w3c.dom.Document;
import freenet.client.FetchResult;
import freenet.keys.FreenetURI;
/** 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
*/
public SoneDownloader(Core core, FreenetInterface freenetInterface) {
- super("Sone Downloader");
+ 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);
}
/**
* 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" }) });
- FreenetURI requestUri = sone.getRequestUri().setMetaString(new String[] { "sone.xml" });
- FetchResult fetchResult = freenetInterface.fetchUri(requestUri);
- logger.log(Level.FINEST, "Got %d bytes back.", fetchResult.size());
- Sone parsedSone = parseSone(sone, fetchResult, requestUri);
- if (parsedSone != null) {
- core.addSone(parsedSone);
+ 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);
}
}
* @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, "Persing FetchResult (%d bytes, %s) for %s…", new Object[] { fetchResult.size(), fetchResult.getMimeType(), originalSone });
- /* TODO - impose a size limit? */
- InputStream xmlInputStream = null;
- Bucket xmlBucket = null;
- Sone sone;
+ 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 {
- xmlBucket = fetchResult.asBucket();
- xmlInputStream = xmlBucket.getInputStream();
- Document document = XML.transformToDocument(xmlInputStream);
- SimpleXML soneXml;
- try {
- soneXml = SimpleXML.fromDocument(document);
- } catch (NullPointerException npe1) {
- /* for some reason, invalid XML can cause NPEs. */
- logger.log(Level.WARNING, "XML for Sone " + originalSone + " can not be parsed!", npe1);
- return null;
- }
-
- /* check ID. */
- String soneId = soneXml.getValue("id", null);
- if ((originalSone != null) && !originalSone.getId().equals(soneId)) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded ID for Sone %s (%s) does not match known ID (%s)!", new Object[] { originalSone, originalSone.getId(), soneId });
- return null;
- }
-
- /* load Sone from core. */
- sone = originalSone;
- if (sone == null) {
- sone = core.getSone(soneId).setRequestUri(requestUri.setMetaString(new String[] {}));
- }
-
- String soneName = soneXml.getValue("name", null);
- if (soneName == null) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded name for Sone %s was null!", new Object[] { sone });
- return null;
- }
-
- SimpleXML profileXml = soneXml.getNode("profile");
- if (profileXml == null) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded Sone %s has no profile!", new Object[] { sone });
- return null;
- }
-
- /* parse profile. */
- String profileFirstName = profileXml.getValue("first-name", null);
- String profileMiddleName = profileXml.getValue("middle-name", null);
- String profileLastName = profileXml.getValue("last-name", null);
- Profile profile = new Profile().setFirstName(profileFirstName).setMiddleName(profileMiddleName).setLastName(profileLastName);
-
- /* parse posts. */
- SimpleXML postsXml = soneXml.getNode("posts");
- if (postsXml == null) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded Sone %s has no posts!", new Object[] { sone });
- return null;
- }
-
- Set<Post> posts = new HashSet<Post>();
- for (SimpleXML postXml : postsXml.getNodes("post")) {
- String postId = postXml.getValue("id", null);
- String postTime = postXml.getValue("time", null);
- String postText = postXml.getValue("text", null);
- if ((postId == null) || (postTime == null) || (postText == null)) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded post for Sone %s with missing data! ID: %s, Time: %s, Text: %s", new Object[] { sone, postId, postTime, postText });
- return null;
- }
- try {
- posts.add(core.getPost(postId).setSone(sone).setTime(Long.parseLong(postTime)).setText(postText));
- } catch (NumberFormatException nfe1) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded post for Sone %s with invalid time: %s", new Object[] { sone, postTime });
- return null;
- }
- }
-
- /* parse replies. */
- SimpleXML repliesXml = soneXml.getNode("replies");
- if (repliesXml == null) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded Sone %s has no replies!", new Object[] { sone });
- return null;
+ soneInputStream = soneBucket.getInputStream();
+ Sone parsedSone = parseSone(originalSone, soneInputStream);
+ if (parsedSone != null) {
+ parsedSone.modify().setLatestEdition(requestUri.getEdition()).update();
}
-
- Set<Reply> replies = new HashSet<Reply>();
- for (SimpleXML replyXml : repliesXml.getNodes("reply")) {
- String replyId = replyXml.getValue("id", null);
- String replyPostId = replyXml.getValue("post-id", null);
- String replyTime = replyXml.getValue("time", null);
- String replyText = replyXml.getValue("text", null);
- if ((replyId == null) || (replyPostId == null) || (replyTime == null) || (replyText == null)) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded reply for Sone %s with missing data! ID: %s, Post: %s, Time: %s, Text: %s", new Object[] { sone, replyId, replyPostId, replyTime, replyText });
- return null;
- }
- try {
- replies.add(core.getReply(replyId).setSone(sone).setPost(core.getPost(replyPostId)).setTime(Long.parseLong(replyTime)).setText(replyText));
- } catch (NumberFormatException nfe1) {
- /* TODO - mark Sone as bad. */
- logger.log(Level.WARNING, "Downloaded reply for Sone %s with invalid time: %s", new Object[] { sone, replyTime });
- return null;
- }
- }
-
- /* okay, apparently everything was parsed correctly. Now import. */
- /* atomic setter operation on the Sone. */
- synchronized (sone) {
- sone.setProfile(profile);
- sone.setPosts(posts);
- sone.setReplies(replies);
- sone.setModificationCounter(0);
- }
- } catch (IOException ioe1) {
- logger.log(Level.WARNING, "Could not read XML file from " + originalSone + "!", ioe1);
- return null;
+ return parsedSone;
+ } catch (Exception e1) {
+ logger.log(Level.WARNING, String.format("Could not parse Sone from %s!", requestUri), e1);
} finally {
- if (xmlBucket != null) {
- xmlBucket.free();
- }
- Closer.close(xmlInputStream);
+ Closer.close(soneInputStream);
+ soneBucket.free();
}
- return sone;
+ 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