org.opencms.gwt.client.rpc.CmsLog Maven / Gradle / Ivy
Show all versions of opencms-gwt Show documentation
/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* For further information about Alkacon Software, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.gwt.client.rpc;
import org.opencms.gwt.client.CmsCoreProvider;
import org.opencms.gwt.shared.rpc.I_CmsLogService;
import org.opencms.gwt.shared.rpc.I_CmsLogServiceAsync;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.rpc.ServiceDefTarget;
/**
* Handles client side logging.
*
* @since 8.0.0
*
* @see org.opencms.gwt.CmsLogService
* @see org.opencms.gwt.shared.rpc.I_CmsLogService
* @see org.opencms.gwt.shared.rpc.I_CmsLogServiceAsync
*/
public final class CmsLog {
/** The service instance. */
private static I_CmsLogServiceAsync m_loggingService;
/**
* Prevent instantiation.
*/
private CmsLog() {
// Prevent instantiation
}
/**
* Logs client messages on the server.
*
* @param message the message to log
*
* @return the generated ticket
*/
public static String log(final String message) {
final String ticket = String.valueOf(System.currentTimeMillis());
// using a deferred command just to be more responsible
// since we do not expect any feed back from it
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
/**
* @see com.google.gwt.user.client.Command#execute()
*/
public void execute() {
getLoggingService().log(ticket, message, new AsyncCallback() {
/**
* @see com.google.gwt.user.client.rpc.AsyncCallback#onFailure(java.lang.Throwable)
*/
public void onFailure(Throwable caught) {
// logging failed, really bad
// but the only thing we can do is to ignore it
}
/**
* @see com.google.gwt.user.client.rpc.AsyncCallback#onSuccess(Object)
*/
public void onSuccess(Void result) {
// logged successfully
}
});
}
});
return ticket;
}
/**
* Returns the service instance, using lazy initialization.
*
* @return the service instance
*/
protected static I_CmsLogServiceAsync getLoggingService() {
if (m_loggingService == null) {
m_loggingService = GWT.create(I_CmsLogService.class);
String serviceUrl = CmsCoreProvider.get().link("org.opencms.gwt.CmsLogService.gwt");
((ServiceDefTarget)m_loggingService).setServiceEntryPoint(serviceUrl);
}
return m_loggingService;
}
}