Projects can now be copied

Kieker.WebGUI/src/main/java/kieker/webgui/beans/application/ProjectsBean.java

@@ -82,9 +82,9 @@ public final class ProjectsBean {
 	}
 
 	/**
-	 * This method adds a new project with the given name to the application if this is possible. In either case (this means if the project has been created, if he
+	 * This method adds a new project with the given name to the application if this is possible. In either case (this means if the project has been created, if the
 	 * project could not be created for any reason) the user will be informed via the growl component. In other words: A message will be delivered within the current
-	 * context.The creation of a new project means in this context that a directory with its name will be created and that an empty but valid kax-file will be
+	 * context. The creation of a new project means in this context that a directory with its name will be created and that an empty but valid kax-file will be
 	 * produced. After creating the project (provided that he creation was successful) the projects list of the "calling" {@link CurrentProjectOverviewBean} will be
 	 * updated.<br>
 	 * If something should go wrong, no exception will be thrown. Everything is caught if necessary.
@@ -111,6 +111,38 @@ public final class ProjectsBean {
 		}
 	}
 
+	/**
+	 * This method tries to copy the project with the given name and saves it under the given new name. In either case (this means if the project has been created,
+	 * if the project could not be created for any reason) the user will be informed via the growl component. In other words: A message will be delivered within the
+	 * current context. After creating the project (provided that he creation was successful) the projects list of the "calling" {@link CurrentProjectOverviewBean}
+	 * will be updated.<br>
+	 * If something should go wrong, no exception will be thrown. Everything is caught if necessary.
+	 * 
+	 * @param sourceProject
+	 *            The name of the source project.
+	 * @param destinationProject
+	 *            The name of the new (copied) project.
+	 */
+	public void copyProject(final String sourceProject, final String destinationProject) {
+		try {
+			// Try and use the FS-Manager to copy the project atomically.
+			FSManager.getInstance().copyProject(sourceProject, destinationProject);
+			// If there were no exception, everything went well. We can add the project to our list.
+			this.projects.add(destinationProject);
+			// Inform the user
+			ProjectsBean.showMessage(FacesMessage.SEVERITY_INFO, "Project created.");
+			// Update the list of the "calling" bean
+			CurrentProjectOverviewBean.getCurrentInstance().updateLists();
+		} catch (final IOException ex) {
+			ProjectsBean.LOG.error("An error occured while creating the project.", ex);
+			ProjectsBean.showMessage(FacesMessage.SEVERITY_ERROR, "An error occured while creating the project.");
+			ex.printStackTrace();
+		} catch (final ProjectAlreadyExistingException ex) {
+			ProjectsBean.LOG.info("A project with the same name exists already.", ex);
+			ProjectsBean.showMessage(FacesMessage.SEVERITY_WARN, "A project with the same name exists already.");
+		}
+	}
+
 	/**
 	 * This method can be used to open an already existing project. This means that the current state of the project on the file system is loaded into an instance of
 	 * {@link MIProject}. This instance can be modified at will and for example later saved by the {@link FSManager}.

Kieker.WebGUI/src/main/java/kieker/webgui/common/FSManager.java

@@ -23,12 +23,15 @@ package kieker.webgui.common;
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.math.RoundingMode;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLClassLoader;
+import java.nio.channels.ByteChannel;
+import java.nio.channels.FileChannel;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 import java.text.DecimalFormat;
@@ -82,9 +85,9 @@ public final class FSManager { // NOCS (Class Data Abstraction Coupling, Class F
 	 */
 	private static final String ROOT_DIRECTORY = "data";
 	/**
-	 * This is the buffer (in bytes) used to copy files.
+	 * This is the buffer (in bytes) used to copy and upload files.
 	 */
-	private static final int BUF_SIZE_BYTES = 1024;
+	private static final int BUF_SIZE_BYTES = 1024 * 1024;
 	/**
 	 * This is the singleton instance of this class.
 	 */
@@ -337,11 +340,83 @@ public final class FSManager { // NOCS (Class Data Abstraction Coupling, Class F
 					throw new ProjectAlreadyExistingException("A project with the name '" + newName + "' exists already.");
 				}
 
-				// TODO Copy all files
+				// Get the necessary paths
+				final File dstProjDir = new File(FSManager.ROOT_DIRECTORY + File.separator + newName);
+				final File srcLibDir = new File(FSManager.ROOT_DIRECTORY + File.separator + projectName + File.separator + FSManager.LIB_DIRECTORY);
+				final File dstLibDir = new File(FSManager.ROOT_DIRECTORY + File.separator + newName + File.separator + FSManager.LIB_DIRECTORY);
+
+				final File srcKaxFile = new File(FSManager.ROOT_DIRECTORY + File.separator + projectName + File.separator + projectName + "."
+						+ FSManager.KAX_EXTENSION);
+				final File dstKaxFile = new File(FSManager.ROOT_DIRECTORY + File.separator + newName + File.separator + newName + "." + FSManager.KAX_EXTENSION);
+
+				// Create the directories
+				final boolean projDirCreated = dstProjDir.mkdir();
+				final boolean libDirCreated = dstLibDir.mkdir();
+				// The following part is only necessary to calm FindBugs...
+				@SuppressWarnings("unused")
+				final boolean createResults = projDirCreated && libDirCreated;
+
+				// Copy the kax file
+				this.copyFile(srcKaxFile, dstKaxFile);
+
+				// Copy the libs
+				for (final File lib : srcLibDir.listFiles()) {
+					final File dstLibFile = new File(dstLibDir, lib.getName());
+					this.copyFile(lib, dstLibFile);
+				}
+
 			}
 		}
 	}
 
+	/**
+	 * This method copies the given source file to the given destination file.
+	 * 
+	 * @param src
+	 *            The source element. This should be a file.
+	 * @param dst
+	 *            The destination element. This should be a (non existing) file.
+	 * @throws IOException
+	 *             If something went wrong
+	 */
+	private void copyFile(final File src, final File dst) throws IOException {
+		// Open the files
+		final FileInputStream fileInputStream = new FileInputStream(src);
+		final FileOutputStream fileOutputStream = new FileOutputStream(dst);
+		final FileChannel inputChannel = fileInputStream.getChannel();
+		final FileChannel outputChannel = fileOutputStream.getChannel();
+
+		// Copy the data
+		this.transfer(inputChannel, outputChannel, src.length());
+
+		// Close the streams
+		fileInputStream.close();
+		fileOutputStream.close();
+
+		dst.setLastModified(src.lastModified());
+	}
+
+	/**
+	 * This method transfers data from one channel to the other.
+	 * 
+	 * @param fileChannel
+	 *            The input channel.
+	 * @param byteChannel
+	 *            The output channel.
+	 * @param lengthInBytes
+	 *            The size in bytes to be copied.
+	 * @throws IOException
+	 *             If something went wrong.
+	 */
+	private void transfer(final FileChannel fileChannel, final ByteChannel byteChannel, final long lengthInBytes) throws IOException {
+		long overallBytesTransfered = 0L;
+		while (overallBytesTransfered < lengthInBytes) {
+			final long count = Math.min(FSManager.BUF_SIZE_BYTES, lengthInBytes - overallBytesTransfered);
+			final long bytesTransfered = fileChannel.transferTo(overallBytesTransfered, count, byteChannel);
+			overallBytesTransfered += bytesTransfered;
+		}
+	}
+
 	/**
 	 * Checks whether a project with the name exists on the file system.
 	 * 

Kieker.WebGUI/src/main/webapp/ProjectOverview.xhtml

@@ -69,7 +69,7 @@
                                 <p:menuitem icon="ui-icon-wrench" id="editAnalysisViews"  styleClass="element-with-whitespace" value="  Cockpit Editor" ajax="false" action="#{currentCockpitEditorBean.setProject(project)}" />
                                 <p:menuitem icon="ui-icon-image" id="showAnalysis"  styleClass="element-with-whitespace" value="  Cockpit" ajax="false" action="#{currentCockpitBean.setProject(project)}" />
                                 <p:separator/>
-                                <p:menuitem id="copyButton" icon="ui-icon-copy"  styleClass="element-with-whitespace" value="  Copy Project" action="#{currentProjectOverviewBean.setProjectName(project)}" onclick="copyProjectDialog.show()" disabled="true"/>
+                                <p:menuitem id="copyButton" icon="ui-icon-copy"  styleClass="element-with-whitespace" value="  Copy Project" action="#{currentProjectOverviewBean.setProjectName(project)}" onclick="copyProjectDialog.show()"/>
                                 <p:menuitem id="renameButton" icon="ui-icon-pencil"  styleClass="element-with-whitespace" value="  Rename Project"  action="#{currentProjectOverviewBean.setProjectName(project)}" onclick="renameProjectDialog.show()" disabled="true"/>
                                 <p:menuitem id="deleteButton" icon="ui-icon-trash"  styleClass="element-with-whitespace" value="  Delete Project" action="#{currentProjectOverviewBean.setProjectName(project)}" onclick="deleteProjectDialog.show()" disabled="true"/>      
                             </p:menu>