package net.pterodactylus.sone.core;
+import java.io.InputStreamReader;
+import java.io.StringWriter;
+import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
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.Reply;
import net.pterodactylus.sone.data.Sone;
+import net.pterodactylus.sone.freenet.StringBucket;
+import net.pterodactylus.util.io.Closer;
import net.pterodactylus.util.logging.Logging;
import net.pterodactylus.util.service.AbstractService;
+import net.pterodactylus.util.template.DefaultTemplateFactory;
+import net.pterodactylus.util.template.ReflectionAccessor;
+import net.pterodactylus.util.template.Template;
+import net.pterodactylus.util.template.TemplateException;
+import net.pterodactylus.util.template.XmlFilter;
+import freenet.client.async.ManifestElement;
+import freenet.keys.FreenetURI;
/**
* A Sone inserter is responsible for inserting a Sone if it has changed.
/** The logger. */
private static final Logger logger = Logging.getLogger(SoneInserter.class);
+ /** The insertion delay (in seconds). */
+ private static volatile int insertionDelay = 60;
+
+ /** The template factory used to create the templates. */
+ private static final DefaultTemplateFactory templateFactory = new DefaultTemplateFactory();
+
+ static {
+ templateFactory.addAccessor(Object.class, new ReflectionAccessor());
+ templateFactory.addFilter("xml", new XmlFilter());
+ }
+
+ /** The UTF-8 charset. */
+ private static final Charset utf8Charset = Charset.forName("UTF-8");
+
+ /** The core. */
+ private final Core core;
+
+ /** The Freenet interface. */
+ private final FreenetInterface freenetInterface;
+
/** The Sone to insert. */
private final Sone sone;
/**
* Creates a new Sone inserter.
*
+ * @param core
+ * The core
* @param freenetInterface
* The freenet interface
* @param sone
* The Sone to insert
*/
- public SoneInserter(FreenetInterface freenetInterface, Sone sone) {
- super("Sone Inserter for “" + sone.getName() + "”");
+ public SoneInserter(Core core, FreenetInterface freenetInterface, Sone sone) {
+ super("Sone Inserter for “" + sone.getName() + "”", false);
+ this.core = core;
+ this.freenetInterface = freenetInterface;
this.sone = sone;
}
//
+ // ACCESSORS
+ //
+
+ /**
+ * Changes the insertion delay, i.e. the time the Sone inserter waits after
+ * it has noticed a Sone modification before it starts the insert.
+ *
+ * @param insertionDelay
+ * The insertion delay (in seconds)
+ */
+ public static void setInsertionDelay(int insertionDelay) {
+ SoneInserter.insertionDelay = insertionDelay;
+ }
+
+ //
// SERVICE METHODS
//
*/
@Override
protected void serviceRun() {
+ long modificationCounter = 0;
+ long lastModificationTime = 0;
while (!shouldStop()) {
+ /* check every seconds. */
+ sleep(1000);
+
+ InsertInformation insertInformation = null;
synchronized (sone) {
- if (sone.getModificationCounter() > 0) {
- sone.setModificationCounter(0);
+ if (sone.getModificationCounter() > modificationCounter) {
+ modificationCounter = sone.getModificationCounter();
+ lastModificationTime = System.currentTimeMillis();
+ sone.setTime(lastModificationTime);
+ logger.log(Level.FINE, "Sone %s has been modified, waiting %d seconds before inserting.", new Object[] { sone.getName(), insertionDelay });
+ }
+ if ((lastModificationTime > 0) && ((System.currentTimeMillis() - lastModificationTime) > (insertionDelay * 1000))) {
+ insertInformation = new InsertInformation(sone);
+ }
+ }
+
+ if (insertInformation != null) {
+ logger.log(Level.INFO, "Inserting Sone “%s”…", new Object[] { sone.getName() });
+
+ boolean success = false;
+ try {
+ core.setSoneStatus(sone, SoneStatus.inserting);
+ FreenetURI finalUri = freenetInterface.insertDirectory(insertInformation.getInsertUri().setKeyType("USK").setSuggestedEdition(0), insertInformation.generateManifestEntries(), "index.html");
+ sone.setLatestEdition(finalUri.getEdition());
+ success = true;
+ logger.log(Level.INFO, "Inserted Sone “%s” at %s.", new Object[] { sone.getName(), finalUri });
+ } catch (SoneException se1) {
+ logger.log(Level.WARNING, "Could not insert Sone “" + sone.getName() + "”!", se1);
+ } finally {
+ core.setSoneStatus(sone, SoneStatus.idle);
+ }
+
+ /*
+ * reset modification counter if Sone has not been modified
+ * while it was inserted.
+ */
+ if (success) {
+ synchronized (sone) {
+ if (sone.getModificationCounter() == modificationCounter) {
+ logger.log(Level.FINE, "Sone “%s” was not modified further, resetting counter…", new Object[] { sone });
+ sone.setModificationCounter(0);
+ core.saveSone(sone);
+ modificationCounter = 0;
+ lastModificationTime = 0;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * Container for information that are required to insert a Sone. This
+ * container merely exists to copy all relevant data without holding a lock
+ * on the {@link Sone} object for too long.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+ private class InsertInformation {
+
+ /** All properties of the Sone, copied for thread safety. */
+ private final Map<String, Object> soneProperties = new HashMap<String, Object>();
+
+ /**
+ * Creates a new insert information container.
+ *
+ * @param sone
+ * The sone to insert
+ */
+ public InsertInformation(Sone sone) {
+ soneProperties.put("id", sone.getId());
+ soneProperties.put("name", sone.getName());
+ soneProperties.put("time", sone.getTime());
+ soneProperties.put("requestUri", sone.getRequestUri());
+ soneProperties.put("insertUri", sone.getInsertUri());
+ soneProperties.put("profile", sone.getProfile());
+ soneProperties.put("posts", new ArrayList<Post>(sone.getPosts()));
+ soneProperties.put("replies", new HashSet<Reply>(sone.getReplies()));
+ soneProperties.put("likedPostIds", new HashSet<String>(sone.getLikedPostIds()));
+ soneProperties.put("likeReplyIds", new HashSet<String>(sone.getLikedReplyIds()));
+ }
+
+ //
+ // ACCESSORS
+ //
+
+ /**
+ * Returns the insert URI of the Sone.
+ *
+ * @return The insert URI of the Sone
+ */
+ public FreenetURI getInsertUri() {
+ return (FreenetURI) soneProperties.get("insertUri");
+ }
+
+ //
+ // ACTIONS
+ //
+
+ /**
+ * Generates all manifest entries required to insert this Sone.
+ *
+ * @return The manifest entries for the Sone insert
+ */
+ public HashMap<String, Object> generateManifestEntries() {
+ HashMap<String, Object> manifestEntries = new HashMap<String, Object>();
+
+ /* first, create an index.html. */
+ manifestEntries.put("index.html", createManifestElement("index.html", "text/html; charset=utf-8", "/templates/insert/index.html"));
+
+ /* now, store the sone. */
+ manifestEntries.put("sone.xml", createManifestElement("sone.xml", "text/xml; charset=utf-8", "/templates/insert/sone.xml"));
+
+ return manifestEntries;
+ }
+
+ //
+ // PRIVATE METHODS
+ //
+
+ /**
+ * Creates a new manifest element.
+ *
+ * @param name
+ * The name of the file
+ * @param contentType
+ * The content type of the file
+ * @param templateName
+ * The name of the template to render
+ * @return The manifest element
+ */
+ @SuppressWarnings("synthetic-access")
+ private ManifestElement createManifestElement(String name, String contentType, String templateName) {
+ InputStreamReader templateInputStreamReader;
+ Template template = templateFactory.createTemplate(templateInputStreamReader = new InputStreamReader(getClass().getResourceAsStream(templateName), utf8Charset));
+ try {
+ template.parse();
+ } catch (TemplateException te1) {
+ logger.log(Level.SEVERE, "Could not parse template “" + templateName + "”!", te1);
+ return null;
+ } finally {
+ Closer.close(templateInputStreamReader);
+ }
+
+ template.set("currentSone", soneProperties);
+ StringWriter writer = new StringWriter();
+ StringBucket bucket = null;
+ try {
+ template.render(writer);
+ bucket = new StringBucket(writer.toString(), utf8Charset);
+ return new ManifestElement(name, bucket, contentType, bucket.size());
+ } catch (TemplateException te1) {
+ logger.log(Level.SEVERE, "Could not render template “" + templateName + "”!", te1);
+ return null;
+ } finally {
+ Closer.close(writer);
+ if (bucket != null) {
+ bucket.free();
}
}
- logger.log(Level.FINEST, "Waiting 60 seconds before checking Sone “" + sone.getName() + "” again.");
- sleep(60 * 1000);
}
+
}
}
projects / Sone.git / blobdiff