Merge branch 'release-0.11'
[jSite.git] / src / main / java / de / todesbaum / jsite / application / ProjectInserter.java
diff --git a/src/main/java/de/todesbaum/jsite/application/ProjectInserter.java b/src/main/java/de/todesbaum/jsite/application/ProjectInserter.java
new file mode 100644 (file)
index 0000000..30d4d7a
--- /dev/null
@@ -0,0 +1,697 @@
+/*
+ * jSite - ProjectInserter.java - Copyright © 2006–2012 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+package de.todesbaum.jsite.application;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.concurrent.CountDownLatch;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import net.pterodactylus.util.io.StreamCopier.ProgressListener;
+import de.todesbaum.jsite.gui.FileScanner;
+import de.todesbaum.jsite.gui.FileScanner.ScannedFile;
+import de.todesbaum.jsite.gui.FileScannerListener;
+import de.todesbaum.util.freenet.fcp2.Client;
+import de.todesbaum.util.freenet.fcp2.ClientPutComplexDir;
+import de.todesbaum.util.freenet.fcp2.ClientPutDir.ManifestPutter;
+import de.todesbaum.util.freenet.fcp2.Connection;
+import de.todesbaum.util.freenet.fcp2.DirectFileEntry;
+import de.todesbaum.util.freenet.fcp2.FileEntry;
+import de.todesbaum.util.freenet.fcp2.Message;
+import de.todesbaum.util.freenet.fcp2.PriorityClass;
+import de.todesbaum.util.freenet.fcp2.RedirectFileEntry;
+import de.todesbaum.util.freenet.fcp2.Verbosity;
+
+/**
+ * Manages project inserts.
+ *
+ * @author David ‘Bombe’ Roden <bombe@freenetproject.org>
+ */
+public class ProjectInserter implements FileScannerListener, Runnable {
+
+       /** The logger. */
+       private static final Logger logger = Logger.getLogger(ProjectInserter.class.getName());
+
+       /** Random number for FCP instances. */
+       private static final int random = (int) (Math.random() * Integer.MAX_VALUE);
+
+       /** Counter for FCP connection identifier. */
+       private static int counter = 0;
+
+       /** The list of insert listeners. */
+       private List<InsertListener> insertListeners = new ArrayList<InsertListener>();
+
+       /** The freenet interface. */
+       protected Freenet7Interface freenetInterface;
+
+       /** The project to insert. */
+       protected Project project;
+
+       /** The file scanner. */
+       private FileScanner fileScanner;
+
+       /** Object used for synchronization. */
+       protected final Object lockObject = new Object();
+
+       /** The temp directory. */
+       private String tempDirectory;
+
+       /** The current connection. */
+       private Connection connection;
+
+       /** Whether the insert is cancelled. */
+       private volatile boolean cancelled = false;
+
+       /** Progress listener for payload transfers. */
+       private ProgressListener progressListener;
+
+       /** Whether to use “early encode.” */
+       private boolean useEarlyEncode;
+
+       /** The insert priority. */
+       private PriorityClass priority;
+
+       /** The manifest putter. */
+       private ManifestPutter manifestPutter;
+
+       /**
+        * Adds a listener to the list of registered listeners.
+        *
+        * @param insertListener
+        *            The listener to add
+        */
+       public void addInsertListener(InsertListener insertListener) {
+               insertListeners.add(insertListener);
+       }
+
+       /**
+        * Removes a listener from the list of registered listeners.
+        *
+        * @param insertListener
+        *            The listener to remove
+        */
+       public void removeInsertListener(InsertListener insertListener) {
+               insertListeners.remove(insertListener);
+       }
+
+       /**
+        * Notifies all listeners that the project insert has started.
+        *
+        * @see InsertListener#projectInsertStarted(Project)
+        */
+       protected void fireProjectInsertStarted() {
+               for (InsertListener insertListener : insertListeners) {
+                       insertListener.projectInsertStarted(project);
+               }
+       }
+
+       /**
+        * Notifies all listeners that the insert has generated a URI.
+        *
+        * @see InsertListener#projectURIGenerated(Project, String)
+        * @param uri
+        *            The generated URI
+        */
+       protected void fireProjectURIGenerated(String uri) {
+               for (InsertListener insertListener : insertListeners) {
+                       insertListener.projectURIGenerated(project, uri);
+               }
+       }
+
+       /**
+        * Notifies all listeners that the insert has made some progress.
+        *
+        * @see InsertListener#projectUploadFinished(Project)
+        */
+       protected void fireProjectUploadFinished() {
+               for (InsertListener insertListener : insertListeners) {
+                       insertListener.projectUploadFinished(project);
+               }
+       }
+
+       /**
+        * Notifies all listeners that the insert has made some progress.
+        *
+        * @see InsertListener#projectInsertProgress(Project, int, int, int, int,
+        *      boolean)
+        * @param succeeded
+        *            The number of succeeded blocks
+        * @param failed
+        *            The number of failed blocks
+        * @param fatal
+        *            The number of fatally failed blocks
+        * @param total
+        *            The total number of blocks
+        * @param finalized
+        *            <code>true</code> if the total number of blocks has already
+        *            been finalized, <code>false</code> otherwise
+        */
+       protected void fireProjectInsertProgress(int succeeded, int failed, int fatal, int total, boolean finalized) {
+               for (InsertListener insertListener : insertListeners) {
+                       insertListener.projectInsertProgress(project, succeeded, failed, fatal, total, finalized);
+               }
+       }
+
+       /**
+        * Notifies all listeners the project insert has finished.
+        *
+        * @see InsertListener#projectInsertFinished(Project, boolean, Throwable)
+        * @param success
+        *            <code>true</code> if the project was inserted successfully,
+        *            <code>false</code> if it failed
+        * @param cause
+        *            The cause of the failure, if any
+        */
+       protected void fireProjectInsertFinished(boolean success, Throwable cause) {
+               for (InsertListener insertListener : insertListeners) {
+                       insertListener.projectInsertFinished(project, success, cause);
+               }
+       }
+
+       /**
+        * Sets the project to insert.
+        *
+        * @param project
+        *            The project to insert
+        */
+       public void setProject(Project project) {
+               this.project = project;
+       }
+
+       /**
+        * Sets the freenet interface to use.
+        *
+        * @param freenetInterface
+        *            The freenet interface to use
+        */
+       public void setFreenetInterface(Freenet7Interface freenetInterface) {
+               this.freenetInterface = freenetInterface;
+       }
+
+       /**
+        * Sets the temp directory to use.
+        *
+        * @param tempDirectory
+        *            The temp directory to use, or {@code null} to use the system
+        *            default
+        */
+       public void setTempDirectory(String tempDirectory) {
+               this.tempDirectory = tempDirectory;
+       }
+
+       /**
+        * Sets whether to use the “early encode“ flag for the insert.
+        *
+        * @param useEarlyEncode
+        *            {@code true} to set the “early encode” flag for the insert,
+        *            {@code false} otherwise
+        */
+       public void setUseEarlyEncode(boolean useEarlyEncode) {
+               this.useEarlyEncode = useEarlyEncode;
+       }
+
+       /**
+        * Sets the insert priority.
+        *
+        * @param priority
+        *            The insert priority
+        */
+       public void setPriority(PriorityClass priority) {
+               this.priority = priority;
+       }
+
+       /**
+        * Sets the manifest putter to use for inserts.
+        *
+        * @param manifestPutter
+        *            The manifest putter to use
+        */
+       public void setManifestPutter(ManifestPutter manifestPutter) {
+               this.manifestPutter = manifestPutter;
+       }
+
+       /**
+        * Starts the insert.
+        *
+        * @param progressListener
+        *            Listener to notify on progress events
+        */
+       public void start(ProgressListener progressListener) {
+               cancelled = false;
+               this.progressListener = progressListener;
+               fileScanner = new FileScanner(project);
+               fileScanner.addFileScannerListener(this);
+               new Thread(fileScanner).start();
+       }
+
+       /**
+        * Stops the current insert.
+        */
+       public void stop() {
+               cancelled = true;
+               synchronized (lockObject) {
+                       if (connection != null) {
+                               connection.disconnect();
+                       }
+               }
+       }
+
+       /**
+        * Creates an input stream that delivers the given file, replacing edition
+        * tokens in the file’s content, if necessary.
+        *
+        * @param filename
+        *            The name of the file
+        * @param fileOption
+        *            The file options
+        * @param edition
+        *            The current edition
+        * @param length
+        *            An array containing a single long which is used to
+        *            <em>return</em> the final length of the file, after all
+        *            replacements
+        * @return The input stream for the file
+        * @throws IOException
+        *             if an I/O error occurs
+        */
+       private InputStream createFileInputStream(String filename, FileOption fileOption, int edition, long[] length) throws IOException {
+               File file = new File(project.getLocalPath(), filename);
+               length[0] = file.length();
+               return new FileInputStream(file);
+       }
+
+       /**
+        * Creates a file entry suitable for handing in to
+        * {@link ClientPutComplexDir#addFileEntry(FileEntry)}.
+        *
+        * @param file
+        *            The name and hash of the file to insert
+        * @param edition
+        *            The current edition
+        * @return A file entry for the given file
+        */
+       private FileEntry createFileEntry(ScannedFile file, int edition) {
+               FileEntry fileEntry = null;
+               String filename = file.getFilename();
+               FileOption fileOption = project.getFileOption(filename);
+               if (fileOption.isInsert()) {
+                       fileOption.setCurrentHash(file.getHash());
+                       /* check if file was modified. */
+                       if (!project.isAlwaysForceInsert() && !fileOption.isForceInsert() && file.getHash().equals(fileOption.getLastInsertHash())) {
+                               /* only insert a redirect. */
+                               logger.log(Level.FINE, String.format("Inserting redirect to edition %d for %s.", fileOption.getLastInsertEdition(), filename));
+                               return new RedirectFileEntry(fileOption.hasChangedName() ? fileOption.getChangedName() : filename, fileOption.getMimeType(), "SSK@" + project.getRequestURI() + "/" + project.getPath() + "-" + fileOption.getLastInsertEdition() + "/" + fileOption.getLastInsertFilename());
+                       }
+                       try {
+                               long[] fileLength = new long[1];
+                               InputStream fileEntryInputStream = createFileInputStream(filename, fileOption, edition, fileLength);
+                               fileEntry = new DirectFileEntry(fileOption.hasChangedName() ? fileOption.getChangedName() : filename, fileOption.getMimeType(), fileEntryInputStream, fileLength[0]);
+                       } catch (IOException ioe1) {
+                               /* ignore, null is returned. */
+                       }
+               } else {
+                       if (fileOption.isInsertRedirect()) {
+                               fileEntry = new RedirectFileEntry(fileOption.hasChangedName() ? fileOption.getChangedName() : filename, fileOption.getMimeType(), fileOption.getCustomKey());
+                       }
+               }
+               return fileEntry;
+       }
+
+       /**
+        * Validates the given project. The project will be checked for any invalid
+        * conditions, such as invalid insert or request keys, missing path names,
+        * missing default file, and so on.
+        *
+        * @param project
+        *            The project to check
+        * @return The encountered warnings and errors
+        */
+       public static CheckReport validateProject(Project project) {
+               CheckReport checkReport = new CheckReport();
+               if ((project.getLocalPath() == null) || (project.getLocalPath().trim().length() == 0)) {
+                       checkReport.addIssue("error.no-local-path", true);
+               }
+               if ((project.getPath() == null) || (project.getPath().trim().length() == 0)) {
+                       checkReport.addIssue("error.no-path", true);
+               }
+               if ((project.getIndexFile() == null) || (project.getIndexFile().length() == 0)) {
+                       checkReport.addIssue("warning.empty-index", false);
+               } else {
+                       File indexFile = new File(project.getLocalPath(), project.getIndexFile());
+                       if (!indexFile.exists()) {
+                               checkReport.addIssue("error.index-missing", true);
+                       }
+               }
+               String indexFile = project.getIndexFile();
+               boolean hasIndexFile = (indexFile != null) && (indexFile.length() > 0);
+               List<String> allowedIndexContentTypes = Arrays.asList("text/html", "application/xhtml+xml");
+               if (hasIndexFile && !allowedIndexContentTypes.contains(project.getFileOption(indexFile).getMimeType())) {
+                       checkReport.addIssue("warning.index-not-html", false);
+               }
+               Map<String, FileOption> fileOptions = project.getFileOptions();
+               Set<Entry<String, FileOption>> fileOptionEntries = fileOptions.entrySet();
+               boolean insert = fileOptionEntries.isEmpty();
+               for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
+                       String fileName = fileOptionEntry.getKey();
+                       FileOption fileOption = fileOptionEntry.getValue();
+                       insert |= fileOption.isInsert() || fileOption.isInsertRedirect();
+                       if (fileName.equals(project.getIndexFile()) && !fileOption.isInsert() && !fileOption.isInsertRedirect()) {
+                               checkReport.addIssue("error.index-not-inserted", true);
+                       }
+                       if (!fileOption.isInsert() && fileOption.isInsertRedirect() && ((fileOption.getCustomKey().length() == 0) || "CHK@".equals(fileOption.getCustomKey()))) {
+                               checkReport.addIssue("error.no-custom-key", true, fileName);
+                       }
+               }
+               if (!insert) {
+                       checkReport.addIssue("error.no-files-to-insert", true);
+               }
+               Set<String> fileNames = new HashSet<String>();
+               for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
+                       FileOption fileOption = fileOptionEntry.getValue();
+                       if (!fileOption.isInsert() && !fileOption.isInsertRedirect()) {
+                               logger.log(Level.FINEST, "Ignoring {0}.", fileOptionEntry.getKey());
+                               continue;
+                       }
+                       String fileName = fileOptionEntry.getKey();
+                       if (fileOption.hasChangedName()) {
+                               fileName = fileOption.getChangedName();
+                       }
+                       logger.log(Level.FINEST, "Adding “{0}” for {1}.", new Object[] { fileName, fileOptionEntry.getKey() });
+                       if (!fileNames.add(fileName)) {
+                               checkReport.addIssue("error.duplicate-file", true, fileName);
+                       }
+               }
+               long totalSize = 0;
+               FileScanner fileScanner = new FileScanner(project);
+               final CountDownLatch completionLatch = new CountDownLatch(1);
+               fileScanner.addFileScannerListener(new FileScannerListener() {
+
+                       @Override
+                       public void fileScannerFinished(FileScanner fileScanner) {
+                               completionLatch.countDown();
+                       }
+               });
+               new Thread(fileScanner).start();
+               while (completionLatch.getCount() > 0) {
+                       try {
+                               completionLatch.await();
+                       } catch (InterruptedException ie1) {
+                               /* TODO: logging */
+                       }
+               }
+               for (ScannedFile scannedFile : fileScanner.getFiles()) {
+                       String fileName = scannedFile.getFilename();
+                       FileOption fileOption = project.getFileOption(fileName);
+                       if ((fileOption != null) && !fileOption.isInsert()) {
+                               continue;
+                       }
+                       totalSize += new File(project.getLocalPath(), fileName).length();
+               }
+               if (totalSize > 2 * 1024 * 1024) {
+                       checkReport.addIssue("warning.site-larger-than-2-mib", false);
+               }
+               return checkReport;
+       }
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public void run() {
+               fireProjectInsertStarted();
+               List<ScannedFile> files = fileScanner.getFiles();
+
+               /* create connection to node */
+               synchronized (lockObject) {
+                       connection = freenetInterface.getConnection("project-insert-" + random + counter++);
+               }
+               connection.setTempDirectory(tempDirectory);
+               boolean connected = false;
+               Throwable cause = null;
+               try {
+                       connected = connection.connect();
+               } catch (IOException e1) {
+                       cause = e1;
+               }
+
+               if (!connected || cancelled) {
+                       fireProjectInsertFinished(false, cancelled ? new AbortedException() : cause);
+                       return;
+               }
+
+               Client client = new Client(connection);
+
+               /* collect files */
+               int edition = project.getEdition();
+               String dirURI = "USK@" + project.getInsertURI() + "/" + project.getPath() + "/" + edition + "/";
+               ClientPutComplexDir putDir = new ClientPutComplexDir("dir-" + counter++, dirURI, tempDirectory);
+               if ((project.getIndexFile() != null) && (project.getIndexFile().length() > 0)) {
+                       putDir.setDefaultName(project.getIndexFile());
+               }
+               putDir.setVerbosity(Verbosity.ALL);
+               putDir.setMaxRetries(-1);
+               putDir.setEarlyEncode(useEarlyEncode);
+               putDir.setPriorityClass(priority);
+               putDir.setManifestPutter(manifestPutter);
+               for (ScannedFile file : files) {
+                       FileEntry fileEntry = createFileEntry(file, edition);
+                       if (fileEntry != null) {
+                               try {
+                                       putDir.addFileEntry(fileEntry);
+                               } catch (IOException ioe1) {
+                                       fireProjectInsertFinished(false, ioe1);
+                                       return;
+                               }
+                       }
+               }
+
+               /* start request */
+               try {
+                       client.execute(putDir, progressListener);
+                       fireProjectUploadFinished();
+               } catch (IOException ioe1) {
+                       fireProjectInsertFinished(false, ioe1);
+                       return;
+               }
+
+               /* parse progress and success messages */
+               String finalURI = null;
+               boolean success = false;
+               boolean finished = false;
+               boolean disconnected = false;
+               while (!finished && !cancelled) {
+                       Message message = client.readMessage();
+                       finished = (message == null) || (disconnected = client.isDisconnected());
+                       logger.log(Level.FINE, "Received message: " + message);
+                       if (!finished) {
+                               @SuppressWarnings("null")
+                               String messageName = message.getName();
+                               if ("URIGenerated".equals(messageName)) {
+                                       finalURI = message.get("URI");
+                                       fireProjectURIGenerated(finalURI);
+                               }
+                               if ("SimpleProgress".equals(messageName)) {
+                                       int total = Integer.parseInt(message.get("Total"));
+                                       int succeeded = Integer.parseInt(message.get("Succeeded"));
+                                       int fatal = Integer.parseInt(message.get("FatallyFailed"));
+                                       int failed = Integer.parseInt(message.get("Failed"));
+                                       boolean finalized = Boolean.parseBoolean(message.get("FinalizedTotal"));
+                                       fireProjectInsertProgress(succeeded, failed, fatal, total, finalized);
+                               }
+                               success |= "PutSuccessful".equals(messageName);
+                               finished = (success && (finalURI != null)) || "PutFailed".equals(messageName) || messageName.endsWith("Error");
+                       }
+               }
+
+               /* post-insert work */
+               if (success) {
+                       @SuppressWarnings("null")
+                       String editionPart = finalURI.substring(finalURI.lastIndexOf('/') + 1);
+                       int newEdition = Integer.parseInt(editionPart);
+                       project.setEdition(newEdition);
+                       project.setLastInsertionTime(System.currentTimeMillis());
+                       project.onSuccessfulInsert();
+               }
+               fireProjectInsertFinished(success, cancelled ? new AbortedException() : (disconnected ? new IOException("Connection terminated") : null));
+       }
+
+       //
+       // INTERFACE FileScannerListener
+       //
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public void fileScannerFinished(FileScanner fileScanner) {
+               if (!fileScanner.isError()) {
+                       new Thread(this).start();
+               } else {
+                       fireProjectInsertFinished(false, null);
+               }
+               fileScanner.removeFileScannerListener(this);
+       }
+
+       /**
+        * Container class that collects all warnings and errors that occured during
+        * {@link ProjectInserter#validateProject(Project) project validation}.
+        *
+        * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+        */
+       public static class CheckReport implements Iterable<Issue> {
+
+               /** The issures that occured. */
+               private final List<Issue> issues = new ArrayList<Issue>();
+
+               /**
+                * Adds an issue.
+                *
+                * @param issue
+                *            The issue to add
+                */
+               public void addIssue(Issue issue) {
+                       issues.add(issue);
+               }
+
+               /**
+                * Creates an {@link Issue} from the given error key and fatality flag
+                * and {@link #addIssue(Issue) adds} it.
+                *
+                * @param errorKey
+                *            The error key
+                * @param fatal
+                *            {@code true} if the error is fatal, {@code false} if only
+                *            a warning should be generated
+                * @param parameters
+                *            Any additional parameters
+                */
+               public void addIssue(String errorKey, boolean fatal, String... parameters) {
+                       addIssue(new Issue(errorKey, fatal, parameters));
+               }
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               public Iterator<Issue> iterator() {
+                       return issues.iterator();
+               }
+
+               /**
+                * Returns whether this check report does not contain any errors.
+                *
+                * @return {@code true} if this check report does not contain any
+                *         errors, {@code false} if this check report does contain
+                *         errors
+                */
+               public boolean isEmpty() {
+                       return issues.isEmpty();
+               }
+
+               /**
+                * Returns the number of issues in this check report.
+                *
+                * @return The number of issues
+                */
+               public int size() {
+                       return issues.size();
+               }
+
+       }
+
+       /**
+        * Container class for a single issue. An issue contains an error key
+        * that describes the error, and a fatality flag that determines whether
+        * the insert has to be aborted (if the flag is {@code true}) or if it
+        * can still be performed and only a warning should be generated (if the
+        * flag is {@code false}).
+        *
+        * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’
+        *         Roden</a>
+        */
+       public static class Issue {
+
+               /** The error key. */
+               private final String errorKey;
+
+               /** The fatality flag. */
+               private final boolean fatal;
+
+               /** Additional parameters. */
+               private String[] parameters;
+
+               /**
+                * Creates a new issue.
+                *
+                * @param errorKey
+                *            The error key
+                * @param fatal
+                *            The fatality flag
+                * @param parameters
+                *            Any additional parameters
+                */
+               protected Issue(String errorKey, boolean fatal, String... parameters) {
+                       this.errorKey = errorKey;
+                       this.fatal = fatal;
+                       this.parameters = parameters;
+               }
+
+               /**
+                * Returns the key of the encountered error.
+                *
+                * @return The error key
+                */
+               public String getErrorKey() {
+                       return errorKey;
+               }
+
+               /**
+                * Returns whether the issue is fatal and the insert has to be
+                * aborted. Otherwise only a warning should be shown.
+                *
+                * @return {@code true} if the insert needs to be aborted, {@code
+                *         false} otherwise
+                */
+               public boolean isFatal() {
+                       return fatal;
+               }
+
+               /**
+                * Returns any additional parameters.
+                *
+                * @return The additional parameters
+                */
+               public String[] getParameters() {
+                       return parameters;
+               }
+
+       }
+
+}