[client] added thrift connection error callback

1 files changed, 34 insertions, 21 deletions

diff --git a/dozentenmodul/src/main/java/gui/GuiManager.java b/dozentenmodul/src/main/java/gui/GuiManager.java
index 762b8433..fb58d386 100644
--- a/dozentenmodul/src/main/java/gui/GuiManager.java
+++ b/dozentenmodul/src/main/java/gui/GuiManager.java
@@ -14,6 +14,8 @@ import org.eclipse.swt.widgets.MenuItem;
 import org.eclipse.swt.widgets.MessageBox;
 import org.eclipse.swt.widgets.Monitor;
 import org.eclipse.swt.widgets.Shell;
+import org.openslx.thrifthelper.ThriftManager;
+import org.openslx.thrifthelper.ThriftManager.ErrorCallback;
 
 public abstract class GuiManager {
 
@@ -23,6 +25,10 @@ public abstract class GuiManager {
 	static Composite contentComposite;
 	static Display display;
 
+	static final int THRIFT_ERROR_RETRY_COUNT = 3;
+	static final String THRIFT_ERROR = "Lost connection to the masterserver. Click OK to retry.";
+	static final String THRIFT_FINAL_ERROR = "Could not re-establish connection to the masterserver after "
+		+ THRIFT_ERROR_RETRY_COUNT + " tries. Contact an administrator/developer. Exiting application.";
 
 	/**
 	 * Add a new composite with content to the main Shell
@@ -39,7 +45,6 @@ public abstract class GuiManager {
 		gridData.heightHint = 600;
 		contentComposite.setLayoutData(gridData);
 		mainShell.setMinimumSize(850, 650);
-
 		mainShell.layout();
 
 	}
@@ -55,28 +60,13 @@ public abstract class GuiManager {
 	}
 
 	// TODO use showMessageBox
-	public static void showMessage(final String message) {
-		MessageBox msgBox = new MessageBox(mainShell, SWT.ICON_INFORMATION);
+	public static void showMessage(final String message, final int style) {
+		MessageBox msgBox = new MessageBox(mainShell, style);
 		msgBox.setText("Information");
 		msgBox.setMessage(message);
 		int ret = msgBox.open();
+		LOGGER.info("Message box return value: " + ret);
 	}
-//	/**
-//	 * Generic helper to show a message box to the user, and optionally log the message to the log file.
-//	 *
-//	 * @param message Message to display. Can be multi line.
-//	 * @param messageType Type of message (warning, information)
-//	 * @param logger Logger instance to log to. Can be null.
-//	 * @param exception Exception related to this message. Can be null.
-//	 */
-//	public static void showMessageBox(String message, MessageType messageType, Logger logger,
-//			Throwable exception) {
-//		if (logger != null)
-//			logger.log(messageType.logPriority, message, exception);
-//		if (exception != null)
-//			message += "\n\n" + exception.getClass().getSimpleName();
-//		JOptionPane.showMessageDialog(mainWindow, message, messageType.title, messageType.optionPaneId);
-//	}
 
 	public static Display getDisplay(){
 		return display; 
@@ -86,6 +76,29 @@ public abstract class GuiManager {
 		display = new Display();
 		mainShell = new Shell(display, SWT.SHELL_TRIM | SWT.CENTER);
 
+		// setup global thrift connection error handler before anything else
+		// Set master server to use (TODO: make configurable via command line)
+		ThriftManager.setMasterServerAddress( "bwlp-masterserver.ruf.uni-freiburg.de" );
+
+		// Set up thrift error message displaying
+		ThriftManager.setErrorCallback(new ErrorCallback() {
+
+			@Override
+			public boolean thriftError(int failCount, String method, Throwable t) {
+				// first check if we failed 3 reconnects, if so just let the user know
+				// that we are closing the application due to connection problems.
+				MessageBox msgBox = new MessageBox(mainShell, SWT.ICON_ERROR);
+				msgBox.setText("Critical error");
+				if (failCount > THRIFT_ERROR_RETRY_COUNT) {
+					msgBox.setMessage(THRIFT_FINAL_ERROR);
+					return false;
+				} else {
+					msgBox.setMessage(THRIFT_ERROR);
+					return true;
+				}
+			}
+		});
+
 		Menu menuBar = new Menu(mainShell, SWT.BAR);
 		MenuItem cascadeFileMenu = new MenuItem(menuBar, SWT.CASCADE);
 		cascadeFileMenu.setText("&File");
@@ -103,15 +116,15 @@ public abstract class GuiManager {
 			}
 		});
 
-		mainShell.setText("Dozmod");
+		mainShell.setText("bwSuite");
 		mainShell.setMenuBar(menuBar);
 
 		// Set layout for the mainshell, items added to the shell should get a gridData
 		mainShell.setLayout(new GridLayout(1, true));
 
+		showMessage(THRIFT_ERROR, SWT.ICON_ERROR);
 		addContent(new gui.core.LoginGUI(mainShell));
 
-
 		// center the window on the primary monitor
 		Monitor primary = display.getPrimaryMonitor();
 		Rectangle bounds = primary.getBounds();