package net.pterodactylus.sone.core;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
+import net.pterodactylus.sone.core.Core.SoneStatus;
+import net.pterodactylus.sone.data.Post;
+import net.pterodactylus.sone.data.Profile;
+import net.pterodactylus.sone.data.Reply;
import net.pterodactylus.sone.data.Sone;
+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;
+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 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;
}
}
/**
+ * 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);
+ }
+ }
+
+ /**
* Fetches the updated Sone. This method is a callback method for
* {@link FreenetInterface#registerUsk(Sone, SoneDownloader)}.
*
*/
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());
+ FreenetURI requestUri = sone.getRequestUri().setMetaString(new String[] { "sone.xml" });
+ core.setSoneStatus(sone, SoneStatus.downloading);
+ try {
+ FetchResult fetchResult = freenetInterface.fetchUri(requestUri);
+ if (fetchResult == null) {
+ /* TODO - mark Sone as bad. */
+ return;
+ }
+ logger.log(Level.FINEST, "Got %d bytes back.", fetchResult.size());
+ Sone parsedSone = parseSone(sone, fetchResult, requestUri);
+ if (parsedSone != null) {
+ core.addSone(parsedSone);
+ }
+ } finally {
+ core.setSoneStatus(sone, (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, "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;
+ 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;
+ }
+ sone.setName(soneName);
+
+ String soneTime = soneXml.getValue("time", null);
+ if (soneTime == null) {
+ /* TODO - mark Sone as bad. */
+ logger.log(Level.WARNING, "Downloaded time for Sone %s was null!", new Object[] { sone });
+ return null;
+ }
+ try {
+ sone.setTime(Long.parseLong(soneTime));
+ } catch (NumberFormatException nfe1) {
+ /* TODO - mark Sone as bad. */
+ logger.log(Level.WARNING, "Downloaded Sone %s with invalid time: %s", new Object[] { sone, soneTime });
+ 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;
+ }
+
+ 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;
+ }
+ }
+
+ /* parse friends. */
+ SimpleXML friendsXml = soneXml.getNode("friends");
+ if (friendsXml == null) {
+ /* TODO - mark Sone as bad. */
+ logger.log(Level.WARNING, "Downloaded Sone %s has no friends!", new Object[] { sone });
+ return null;
+ }
+
+ Set<Sone> friends = new HashSet<Sone>();
+ for (SimpleXML friendXml : friendsXml.getNodes("friend")) {
+ String friendId = friendXml.getValue("sone-id", null);
+ String friendKey = friendXml.getValue("sone-key", null);
+ String friendName = friendXml.getValue("sone-name", null);
+ if ((friendId == null) || (friendKey == null) || (friendName == null)) {
+ /* TODO - mark Sone as bad. */
+ logger.log(Level.WARNING, "Downloaded friend for Sone %s with missing data! ID: %s, Key: %s, Name: %s", new Object[] { sone, friendId, friendKey, friendName });
+ return null;
+ }
+ try {
+ friends.add(core.getSone(friendId).setRequestUri(new FreenetURI(friendKey)).setName(friendName));
+ } catch (MalformedURLException mue1) {
+ /* TODO - mark Sone as bad. */
+ logger.log(Level.WARNING, "Downloaded friend for Sone %s with invalid key: %s", new Object[] { sone, friendKey });
+ return null;
+ }
+ }
+
+ Set<Sone> knownSones = new HashSet<Sone>();
+ for (SimpleXML friendXml : friendsXml.getNodes("friend")) {
+ String knownSoneId = friendXml.getValue("sone-id", null);
+ String knownSoneKey = friendXml.getValue("sone-key", null);
+ String knownSoneName = friendXml.getValue("sone-name", null);
+ if ((knownSoneId == null) || (knownSoneKey == null) || (knownSoneName == null)) {
+ /* TODO - mark Sone as bad. */
+ logger.log(Level.WARNING, "Downloaded known Sone for Sone %s with missing data! ID: %s, Key: %s, Name: %s", new Object[] { sone, knownSoneId, knownSoneKey, knownSoneName });
+ return null;
+ }
+ try {
+ knownSones.add(core.getSone(knownSoneId).setRequestUri(new FreenetURI(knownSoneKey)).setName(knownSoneName));
+ } catch (MalformedURLException mue1) {
+ /* TODO - mark Sone as bad. */
+ logger.log(Level.WARNING, "Downloaded known Sone for Sone %s with invalid key: %s", new Object[] { sone, knownSoneKey });
+ 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.setFriends(friends);
+ sone.setModificationCounter(0);
+ }
+
+ /* add all known Sones to core for downloading. */
+ for (Sone knownSone : knownSones) {
+ core.addSone(knownSone);
+ }
+
+ } catch (IOException ioe1) {
+ logger.log(Level.WARNING, "Could not read XML file from " + originalSone + "!", ioe1);
+ return null;
+ } finally {
+ if (xmlBucket != null) {
+ xmlBucket.free();
+ }
+ Closer.close(xmlInputStream);
+ }
+ return sone;
}
//
projects / Sone.git / blobdiff