package net.pterodactylus.sone.core;
+import java.net.MalformedURLException;
import java.util.HashMap;
+import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
+import net.pterodactylus.sone.data.Sone;
import net.pterodactylus.util.logging.Logging;
import net.pterodactylus.util.service.AbstractService;
+
+import com.db4o.ObjectContainer;
+
import freenet.client.FetchException;
import freenet.client.FetchResult;
import freenet.client.HighLevelSimpleClient;
+import freenet.client.HighLevelSimpleClientImpl;
import freenet.client.InsertException;
+import freenet.client.async.ClientContext;
+import freenet.client.async.USKCallback;
import freenet.keys.FreenetURI;
+import freenet.keys.USK;
import freenet.node.Node;
+import freenet.node.RequestStarter;
/**
* Contains all necessary functionality for interacting with the Freenet node.
private static final Logger logger = Logging.getLogger(FreenetInterface.class);
/** The node to interact with. */
- @SuppressWarnings("unused")
private final Node node;
/** The high-level client to use for requests. */
private final HighLevelSimpleClient client;
+ /** The USK callbacks. */
+ private final Map<String, USKCallback> soneUskCallbacks = new HashMap<String, USKCallback>();
+
/**
* Creates a new Freenet interface.
*
* The high-level client
*/
public FreenetInterface(Node node, HighLevelSimpleClient client) {
+ super("Sone Freenet Interface");
this.node = node;
this.client = client;
}
* @return The result of the fetch, or {@code null} if an error occured
*/
public FetchResult fetchUri(FreenetURI uri) {
- logger.entering(FreenetInterface.class.getName(), "fetchUri(FreenetURI)", uri);
FetchResult fetchResult = null;
- try {
- fetchResult = client.fetch(uri);
- } catch (FetchException fe1) {
- logger.log(Level.WARNING, "Could not fetch “" + uri + "”!", fe1);
- } finally {
- logger.exiting(FreenetInterface.class.getName(), "fetchUri(FreenetURI)", fetchResult);
+ FreenetURI currentUri = new FreenetURI(uri);
+ while (true) {
+ try {
+ fetchResult = client.fetch(currentUri);
+ return fetchResult;
+ } catch (FetchException fe1) {
+ if (fe1.getMode() == FetchException.PERMANENT_REDIRECT) {
+ currentUri = fe1.newURI;
+ continue;
+ }
+ logger.log(Level.WARNING, "Could not fetch “" + uri + "”!", fe1);
+ return null;
+ }
}
- return fetchResult;
}
/**
}
}
+ /**
+ * Registers the USK for the given Sone and notifies the given
+ * {@link SoneDownloader} if an update was found.
+ *
+ * @param sone
+ * The Sone to watch
+ * @param soneDownloader
+ * The Sone download to notify on updates
+ */
+ public void registerUsk(final Sone sone, final SoneDownloader soneDownloader) {
+ try {
+ logger.log(Level.FINE, "Registering Sone “%s” for USK updates at %s…", new Object[] { sone, sone.getRequestUri().setMetaString(new String[] { "sone.xml" }) });
+ USKCallback uskCallback = new USKCallback() {
+
+ @Override
+ @SuppressWarnings("synthetic-access")
+ public void onFoundEdition(long edition, USK key, ObjectContainer objectContainer, ClientContext clientContext, boolean metadata, short codec, byte[] data, boolean newKnownGood, boolean newSlotToo) {
+ logger.log(Level.FINE, "Found USK update for Sone “%s” at %s, new known good: %s, new slot too: %s.", new Object[] { sone, key, newKnownGood, newSlotToo });
+ if (newKnownGood) {
+ sone.updateUris(key.getURI());
+ soneDownloader.fetchSone(sone);
+ }
+ }
+
+ @Override
+ public short getPollingPriorityProgress() {
+ return RequestStarter.INTERACTIVE_PRIORITY_CLASS;
+ }
+
+ @Override
+ public short getPollingPriorityNormal() {
+ return RequestStarter.INTERACTIVE_PRIORITY_CLASS;
+ }
+ };
+ soneUskCallbacks.put(sone.getId(), uskCallback);
+ node.clientCore.uskManager.subscribe(USK.create(sone.getRequestUri()), uskCallback, true, (HighLevelSimpleClientImpl) client);
+ } catch (MalformedURLException mue1) {
+ logger.log(Level.WARNING, "Could not subscribe USK “" + sone.getRequestUri() + "”!", mue1);
+ }
+ }
+
+ /**
+ * Unsubscribes the request URI of the given Sone.
+ *
+ * @param sone
+ * The Sone to unregister
+ */
+ public void unregisterUsk(Sone sone) {
+ USKCallback uskCallback = soneUskCallbacks.remove(sone.getId());
+ if (uskCallback == null) {
+ return;
+ }
+ try {
+ logger.log(Level.FINEST, "Unsubscribing from USK for %s…", new Object[] { sone });
+ node.clientCore.uskManager.unsubscribe(USK.create(sone.getRequestUri()), uskCallback);
+ } catch (MalformedURLException mue1) {
+ logger.log(Level.FINE, "Could not unsubscribe USK “" + sone.getRequestUri() + "”!", mue1);
+ }
+ }
+
}