X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fcore%2FSoneInserter.java;h=a1bb90349d5e376029557f0be4136f9dd794cf4d;hp=259667bb4af97ef37ad7a93252a850868ffe6d2f;hb=c2e868714435ac7c75d77d1911d0dfb00393d051;hpb=08f0784ec6247da055b3d07835aa089333de0bcb diff --git a/src/main/java/net/pterodactylus/sone/core/SoneInserter.java b/src/main/java/net/pterodactylus/sone/core/SoneInserter.java index 259667b..a1bb903 100644 --- a/src/main/java/net/pterodactylus/sone/core/SoneInserter.java +++ b/src/main/java/net/pterodactylus/sone/core/SoneInserter.java @@ -1,5 +1,5 @@ /* - * FreenetSone - SoneInserter.java - Copyright © 2010 David Roden + * Sone - SoneInserter.java - Copyright © 2010–2013 David Roden * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -17,23 +17,44 @@ package net.pterodactylus.sone.core; +import static com.google.common.base.Preconditions.checkArgument; +import static net.pterodactylus.sone.data.Album.NOT_EMPTY; + import java.io.InputStreamReader; import java.io.StringWriter; import java.nio.charset.Charset; 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.event.SoneInsertAbortedEvent; +import net.pterodactylus.sone.core.event.SoneInsertedEvent; +import net.pterodactylus.sone.core.event.SoneInsertingEvent; +import net.pterodactylus.sone.data.Album; +import net.pterodactylus.sone.data.Post; +import net.pterodactylus.sone.data.Reply; import net.pterodactylus.sone.data.Sone; +import net.pterodactylus.sone.data.Sone.SoneStatus; import net.pterodactylus.sone.freenet.StringBucket; +import net.pterodactylus.sone.main.SonePlugin; 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.HtmlFilter; import net.pterodactylus.util.template.ReflectionAccessor; import net.pterodactylus.util.template.Template; +import net.pterodactylus.util.template.TemplateContext; +import net.pterodactylus.util.template.TemplateContextFactory; import net.pterodactylus.util.template.TemplateException; +import net.pterodactylus.util.template.TemplateParser; import net.pterodactylus.util.template.XmlFilter; + +import com.google.common.collect.FluentIterable; +import com.google.common.collect.Ordering; +import com.google.common.eventbus.EventBus; + import freenet.client.async.ManifestElement; import freenet.keys.FreenetURI; @@ -47,38 +68,118 @@ public class SoneInserter extends AbstractService { /** 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(); + private static final TemplateContextFactory templateContextFactory = new TemplateContextFactory(); static { - templateFactory.addAccessor(Object.class, new ReflectionAccessor()); - templateFactory.addFilter("xml", new XmlFilter()); + templateContextFactory.addAccessor(Object.class, new ReflectionAccessor()); + templateContextFactory.addFilter("xml", new XmlFilter()); + templateContextFactory.addFilter("html", new HtmlFilter()); } /** The UTF-8 charset. */ private static final Charset utf8Charset = Charset.forName("UTF-8"); + /** The core. */ + private final Core core; + + /** The event bus. */ + private final EventBus eventBus; + /** The Freenet interface. */ private final FreenetInterface freenetInterface; /** The Sone to insert. */ - private final Sone sone; + private volatile Sone sone; + + /** Whether a modification has been detected. */ + private volatile boolean modified = false; + + /** The fingerprint of the last insert. */ + private volatile String lastInsertFingerprint; /** * Creates a new Sone inserter. * + * @param core + * The core + * @param eventBus + * The event bus * @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, EventBus eventBus, FreenetInterface freenetInterface, Sone sone) { + super("Sone Inserter for “" + sone.getName() + "”", false); + this.core = core; + this.eventBus = eventBus; this.freenetInterface = freenetInterface; this.sone = sone; } // + // ACCESSORS + // + + /** + * Sets the Sone to insert. + * + * @param sone + * The Sone to insert + * @return This Sone inserter + */ + public SoneInserter setSone(Sone sone) { + checkArgument((this.sone == null) || sone.equals(this.sone), "Sone to insert can not be set to a different Sone"); + this.sone = sone; + return this; + } + + /** + * 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; + } + + /** + * Returns the fingerprint of the last insert. + * + * @return The fingerprint of the last insert + */ + public String getLastInsertFingerprint() { + return lastInsertFingerprint; + } + + /** + * Sets the fingerprint of the last insert. + * + * @param lastInsertFingerprint + * The fingerprint of the last insert + */ + public void setLastInsertFingerprint(String lastInsertFingerprint) { + this.lastInsertFingerprint = lastInsertFingerprint; + } + + /** + * Returns whether the Sone inserter has detected a modification of the + * Sone. + * + * @return {@code true} if the Sone has been modified, {@code false} + * otherwise + */ + public boolean isModified() { + return modified; + } + + // // SERVICE METHODS // @@ -87,50 +188,94 @@ public class SoneInserter extends AbstractService { */ @Override protected void serviceRun() { - long modificationCounter = 0; - boolean restartNow = true; + long lastModificationTime = 0; + String lastInsertedFingerprint = lastInsertFingerprint; + String lastFingerprint = ""; + Sone sone; while (!shouldStop()) { - if (!restartNow) { - logger.log(Level.FINEST, "Waiting 60 seconds before checking Sone “" + sone.getName() + "”."); - sleep(60 * 1000); - } - restartNow = false; - InsertInformation insertInformation = null; - synchronized (sone) { - modificationCounter = sone.getModificationCounter(); - if (modificationCounter > 0) { - sone.setTime(System.currentTimeMillis()); - insertInformation = new InsertInformation(sone.getRequestUri(), sone.getInsertUri()); - } - } - if (insertInformation != null) { - logger.log(Level.INFO, "Inserting Sone “%s”…", new Object[] { sone.getName() }); - - boolean success = false; - try { - FreenetURI finalUri = freenetInterface.insertDirectory(insertInformation.getInsertUri().setKeyType("USK").setDocName("Sone-" + sone.getName()).setSuggestedEdition(0), insertInformation.generateManifestEntries(), "index.html"); - sone.updateUris(finalUri); - 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); - } + try { + /* check every seconds. */ + sleep(1000); - /* - * reset modification counter if Sone has not been modified - * while it was inserted. - */ - if (success) { + /* don’t insert locked Sones. */ + sone = this.sone; + if (core.isLocked(sone)) { + /* trigger redetection when the Sone is unlocked. */ synchronized (sone) { - if (sone.getModificationCounter() == modificationCounter) { - logger.log(Level.FINE, "Sone “%s” was not modified further, resetting counter…", new Object[] { sone }); - sone.setModificationCounter(0); + modified = !sone.getFingerprint().equals(lastInsertedFingerprint); + } + lastFingerprint = ""; + lastModificationTime = 0; + continue; + } + + InsertInformation insertInformation = null; + synchronized (sone) { + String fingerprint = sone.getFingerprint(); + if (!fingerprint.equals(lastFingerprint)) { + if (fingerprint.equals(lastInsertedFingerprint)) { + modified = false; + lastModificationTime = 0; + logger.log(Level.FINE, String.format("Sone %s has been reverted to last insert state.", sone)); } else { - logger.log(Level.FINE, "Sone “%s” was modified since the insert started, starting another insert…", new Object[] { sone }); - restartNow = true; + lastModificationTime = System.currentTimeMillis(); + modified = true; + logger.log(Level.FINE, String.format("Sone %s has been modified, waiting %d seconds before inserting.", sone.getName(), insertionDelay)); } + lastFingerprint = fingerprint; + } + if (modified && (lastModificationTime > 0) && ((System.currentTimeMillis() - lastModificationTime) > (insertionDelay * 1000))) { + lastInsertedFingerprint = fingerprint; + insertInformation = new InsertInformation(sone); } } + + if (insertInformation != null) { + logger.log(Level.INFO, String.format("Inserting Sone “%s”…", sone.getName())); + + boolean success = false; + try { + sone.setStatus(SoneStatus.inserting); + long insertTime = System.currentTimeMillis(); + insertInformation.setTime(insertTime); + eventBus.post(new SoneInsertingEvent(sone)); + FreenetURI finalUri = freenetInterface.insertDirectory(insertInformation.getInsertUri(), insertInformation.generateManifestEntries(), "index.html"); + eventBus.post(new SoneInsertedEvent(sone, System.currentTimeMillis() - insertTime)); + /* at this point we might already be stopped. */ + if (shouldStop()) { + /* if so, bail out, don’t change anything. */ + break; + } + sone.setTime(insertTime); + sone.setLatestEdition(finalUri.getEdition()); + core.touchConfiguration(); + success = true; + logger.log(Level.INFO, String.format("Inserted Sone “%s” at %s.", sone.getName(), finalUri)); + } catch (SoneException se1) { + eventBus.post(new SoneInsertAbortedEvent(sone, se1)); + logger.log(Level.WARNING, String.format("Could not insert Sone “%s”!", sone.getName()), se1); + } finally { + sone.setStatus(SoneStatus.idle); + } + + /* + * reset modification counter if Sone has not been modified + * while it was inserted. + */ + if (success) { + synchronized (sone) { + if (lastInsertedFingerprint.equals(sone.getFingerprint())) { + logger.log(Level.FINE, String.format("Sone “%s” was not modified further, resetting counter…", sone)); + lastModificationTime = 0; + lastInsertFingerprint = lastInsertedFingerprint; + core.touchConfiguration(); + modified = false; + } + } + } + } + } catch (Throwable t1) { + logger.log(Level.SEVERE, "SoneInserter threw an Exception!", t1); } } } @@ -144,23 +289,27 @@ public class SoneInserter extends AbstractService { */ private class InsertInformation { - /** The request URI of the Sone. */ - private final FreenetURI requestUri; - - /** The insert URI of the Sone. */ - private final FreenetURI insertUri; + /** All properties of the Sone, copied for thread safety. */ + private final Map soneProperties = new HashMap(); /** * Creates a new insert information container. * - * @param requestUri - * The request URI of the Sone - * @param insertUri - * The insert URI of the Sone + * @param sone + * The sone to insert */ - public InsertInformation(FreenetURI requestUri, FreenetURI insertUri) { - this.requestUri = requestUri; - this.insertUri = insertUri; + 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", Ordering.from(Post.TIME_COMPARATOR).sortedCopy(sone.getPosts())); + soneProperties.put("replies", Ordering.from(Reply.TIME_COMPARATOR).reverse().sortedCopy(sone.getReplies())); + soneProperties.put("likedPostIds", new HashSet(sone.getLikedPostIds())); + soneProperties.put("likedReplyIds", new HashSet(sone.getLikedReplyIds())); + soneProperties.put("albums", FluentIterable.from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).filter(NOT_EMPTY).toList()); } // @@ -168,22 +317,22 @@ public class SoneInserter extends AbstractService { // /** - * Returns the request URI of the Sone. + * Returns the insert URI of the Sone. * - * @return The request URI of the Sone + * @return The insert URI of the Sone */ - @SuppressWarnings("unused") - public FreenetURI getRequestUri() { - return requestUri; + public FreenetURI getInsertUri() { + return (FreenetURI) soneProperties.get("insertUri"); } /** - * Returns the insert URI of the Sone. + * Sets the time of the Sone at the time of the insert. * - * @return The insert URI of the Sone + * @param time + * The time of the Sone */ - public FreenetURI getInsertUri() { - return insertUri; + public void setTime(long time) { + soneProperties.put("time", time); } // @@ -224,25 +373,31 @@ public class SoneInserter extends AbstractService { */ @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)); + InputStreamReader templateInputStreamReader = null; + Template template; try { - template.parse(); + templateInputStreamReader = new InputStreamReader(getClass().getResourceAsStream(templateName), utf8Charset); + template = TemplateParser.parse(templateInputStreamReader); } catch (TemplateException te1) { - logger.log(Level.SEVERE, "Could not parse template “" + templateName + "”!", te1); + logger.log(Level.SEVERE, String.format("Could not parse template “%s”!", templateName), te1); return null; } finally { Closer.close(templateInputStreamReader); } - template.set("currentSone", sone); + + TemplateContext templateContext = templateContextFactory.createTemplateContext(); + templateContext.set("core", core); + templateContext.set("currentSone", soneProperties); + templateContext.set("currentEdition", core.getUpdateChecker().getLatestEdition()); + templateContext.set("version", SonePlugin.VERSION); StringWriter writer = new StringWriter(); StringBucket bucket = null; try { - template.render(writer); + template.render(templateContext, 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); + logger.log(Level.SEVERE, String.format("Could not render template “%s”!", templateName), te1); return null; } finally { Closer.close(writer);