From d30a8ff8477a24f8a1f7c90924ba6d89c0c6242e Mon Sep 17 00:00:00 2001
From: =?utf8?q?David=20=E2=80=98Bombe=E2=80=99=20Roden?=
 <bombe@pterodactylus.net>
Date: Wed, 13 Oct 2010 21:28:35 +0200
Subject: [PATCH] Implement Sone inserting.

---
 .../net/pterodactylus/sone/core/SoneInserter.java  | 136 ++++++++++++++++++++-
 src/main/resources/templates/insert/index.html     |  12 ++
 2 files changed, 146 insertions(+), 2 deletions(-)
 create mode 100644 src/main/resources/templates/insert/index.html

diff --git a/src/main/java/net/pterodactylus/sone/core/SoneInserter.java b/src/main/java/net/pterodactylus/sone/core/SoneInserter.java
index a8f9951..ee98cb2 100644
--- a/src/main/java/net/pterodactylus/sone/core/SoneInserter.java
+++ b/src/main/java/net/pterodactylus/sone/core/SoneInserter.java
@@ -17,12 +17,22 @@
 
 package net.pterodactylus.sone.core;
 
+import java.io.InputStreamReader;
+import java.io.StringWriter;
+import java.nio.charset.Charset;
+import java.util.HashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import net.pterodactylus.sone.data.Sone;
+import net.pterodactylus.sone.freenet.StringBucket;
 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 freenet.client.async.ManifestElement;
+import freenet.keys.FreenetURI;
 
 /**
  * A Sone inserter is responsible for inserting a Sone if it has changed.
@@ -34,6 +44,16 @@ public class SoneInserter extends AbstractService {
 	/** The logger. */
 	private static final Logger logger = Logging.getLogger(SoneInserter.class);
 
+	/** The template factory used to create the templates. */
+	private static final DefaultTemplateFactory templateFactory = new DefaultTemplateFactory();
+
+	static {
+		templateFactory.addAccessor(Object.class, new ReflectionAccessor());
+	}
+
+	/** The Freenet interface. */
+	private final FreenetInterface freenetInterface;
+
 	/** The Sone to insert. */
 	private final Sone sone;
 
@@ -47,6 +67,7 @@ public class SoneInserter extends AbstractService {
 	 */
 	public SoneInserter(FreenetInterface freenetInterface, Sone sone) {
 		super("Sone Inserter for “" + sone.getName() + "”");
+		this.freenetInterface = freenetInterface;
 		this.sone = sone;
 	}
 
@@ -59,10 +80,37 @@ public class SoneInserter extends AbstractService {
 	 */
 	@Override
 	protected void serviceRun() {
+		long modificationCounter = 0;
 		while (!shouldStop()) {
+			InsertInformation insertInformation = null;
 			synchronized (sone) {
-				if (sone.getModificationCounter() > 0) {
-					sone.setModificationCounter(0);
+				modificationCounter = sone.getModificationCounter();
+				if (modificationCounter > 0) {
+					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");
+					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);
+				}
+
+				/*
+				 * reset modification counter if Sone has not been modified
+				 * while it was inserted.
+				 */
+				if (success) {
+					synchronized (sone) {
+						if (sone.getModificationCounter() == modificationCounter) {
+							sone.setModificationCounter(0);
+						}
+					}
 				}
 			}
 			logger.log(Level.FINEST, "Waiting 60 seconds before checking Sone “" + sone.getName() + "” again.");
@@ -70,4 +118,88 @@ public class SoneInserter extends AbstractService {
 		}
 	}
 
+	/**
+	 * 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 {
+
+		/** The request URI of the Sone. */
+		private final FreenetURI requestUri;
+
+		/** The insert URI of the Sone. */
+		private final FreenetURI insertUri;
+
+		/**
+		 * Creates a new insert information container.
+		 *
+		 * @param requestUri
+		 *            The request URI of the Sone
+		 * @param insertUri
+		 *            The insert URI of the Sone
+		 */
+		public InsertInformation(FreenetURI requestUri, FreenetURI insertUri) {
+			this.requestUri = requestUri;
+			this.insertUri = insertUri;
+		}
+
+		//
+		// ACCESSORS
+		//
+
+		/**
+		 * Returns the request URI of the Sone.
+		 *
+		 * @return The request URI of the Sone
+		 */
+		@SuppressWarnings("unused")
+		public FreenetURI getRequestUri() {
+			return requestUri;
+		}
+
+		/**
+		 * Returns the insert URI of the Sone.
+		 *
+		 * @return The insert URI of the Sone
+		 */
+		public FreenetURI getInsertUri() {
+			return insertUri;
+		}
+
+		//
+		// ACTIONS
+		//
+
+		/**
+		 * Generates all manifest entries required to insert this Sone.
+		 *
+		 * @return The manifest entries for the Sone insert
+		 */
+		@SuppressWarnings("synthetic-access")
+		public HashMap<String, Object> generateManifestEntries() {
+			HashMap<String, Object> manifestEntries = new HashMap<String, Object>();
+
+			Charset utf8Charset = Charset.forName("UTF-8");
+
+			/* first, create an index.html. */
+			Template indexTemplate = templateFactory.createTemplate(new InputStreamReader(getClass().getResourceAsStream("/templates/insert/index.html"), utf8Charset));
+			indexTemplate.set("currentSone", sone);
+			StringWriter indexWriter = new StringWriter();
+			indexTemplate.render(indexWriter);
+			StringBucket indexBucket = new StringBucket(indexWriter.toString(), utf8Charset);
+			ManifestElement indexManifestElement = new ManifestElement("index.html", indexBucket, "text/html; charset=utf-8", indexBucket.size());
+			manifestEntries.put("index.html", indexManifestElement);
+
+			return manifestEntries;
+		}
+
+		//
+		// PRIVATE METHODS
+		//
+
+	}
+
 }
diff --git a/src/main/resources/templates/insert/index.html b/src/main/resources/templates/insert/index.html
new file mode 100644
index 0000000..73e35a8
--- /dev/null
+++ b/src/main/resources/templates/insert/index.html
@@ -0,0 +1,12 @@
+<html>
+	<head>
+		<title>Sone “<% currentSone.name|html>” - Sone</title>
+	</head>
+	<body>
+		<h1>Sone “<% currentSone.name|html>”</h1>
+		<p>
+			This page should not be viewed directly; it is merely a reminder
+			that you should install the <i>Sone</i> plugin.
+		</p>
+	</body>
+</html>
-- 
2.7.4