-public class SoneDownloader extends AbstractService {
-
- /** The logger. */
- private static final Logger logger = Logging.getLogger(SoneDownloader.class);
-
- /** The core. */
- private final Core core;
-
- /** The Freenet interface. */
- private final FreenetInterface freenetInterface;
-
- /** The sones to update. */
- private final Set<Sone> sones = new HashSet<Sone>();
-
- /**
- * Creates a new Sone downloader.
- *
- * @param core
- * The core
- * @param freenetInterface
- * The Freenet interface
- */
- public SoneDownloader(Core core, FreenetInterface freenetInterface) {
- super("Sone Downloader");
- this.core = core;
- this.freenetInterface = freenetInterface;
- }
-
- //
- // ACTIONS
- //
-
- /**
- * Adds the given Sone to the set of Sones that will be watched for updates.
- *
- * @param sone
- * The Sone to add
- */
- public void addSone(Sone sone) {
- if (sones.add(sone)) {
- freenetInterface.registerUsk(sone, this);
- }
- }
-
- /**
- * Fetches the updated Sone. This method is a callback method for
- * {@link FreenetInterface#registerUsk(Sone, SoneDownloader)}.
- *
- * @param 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());
- updateSoneFromXml(sone, fetchResult);
- }
-
- //
- // SERVICE METHODS
- //
-
- /**
- * {@inheritDoc}
- */
- @Override
- protected void serviceStop() {
- for (Sone sone : sones) {
- freenetInterface.unregisterUsk(sone);
- }
- }
-
- //
- // 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;
- }