package net.pterodactylus.sone.core;
+import java.io.IOException;
+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.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.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) {
+ public SoneDownloader(Core core, FreenetInterface freenetInterface) {
super("Sone Downloader");
+ this.core = core;
this.freenetInterface = freenetInterface;
}
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());
+ updateSoneFromXml(sone, fetchResult);
}
//
}
}
+ //
+ // PRIVATE METHODS
+ //
+
+ /**
+ * Updates the contents of the given Sone from the given fetch result.
+ *
+ * @param sone
+ * The Sone to update
+ * @param fetchResult
+ * The fetch result
+ */
+ private void updateSoneFromXml(Sone sone, FetchResult fetchResult) {
+ logger.log(Level.FINEST, "Persing FetchResult (%d bytes, %s) for %s…", new Object[] { fetchResult.size(), fetchResult.getMimeType(), sone });
+ /* TODO - impose a size limit? */
+ InputStream xmlInputStream = null;
+ Bucket xmlBucket = 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 " + sone + " can not be parsed!", npe1);
+ return;
+ }
+
+ /* check ID. */
+ String soneId = soneXml.getValue("id", null);
+ if (!sone.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[] { sone, sone.getId(), soneId });
+ return;
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ /* 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;
+ }
+
+ 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;
+ }
+ 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;
+ }
+ }
+
+ /* 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;
+ }
+
+ 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;
+ }
+ 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;
+ }
+ }
+
+ /* okay, apparently everything was parsed correctly. Now import. */
+ /* atomic setter operation on the Sone. */
+ synchronized (sone) {
+ sone.setProfile(profile);
+ }
+ } catch (IOException ioe1) {
+ logger.log(Level.WARNING, "Could not read XML file from " + sone + "!", ioe1);
+ } finally {
+ if (xmlBucket != null) {
+ xmlBucket.free();
+ }
+ Closer.close(xmlInputStream);
+ }
+ }
+
}
projects / Sone.git / blobdiff