/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
**********************************************************************************************************************/
package eu.stratosphere.client;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import eu.stratosphere.client.web.WebInterfaceServer;
import eu.stratosphere.configuration.ConfigConstants;
import eu.stratosphere.configuration.Configuration;
import eu.stratosphere.configuration.GlobalConfiguration;
/**
* Main entry point for the web frontend. Creates a web server according to the configuration
* in the given directory.
*
*/
public class WebFrontend {
/**
* The log for this class.
*/
private static final Log LOG = LogFactory.getLog(WebFrontend.class);
/**
* Main method. accepts a single parameter, which is the config directory.
*
* @param args
* The parameters to the entry point.
*/
public static void main(String[] args) {
try {
// get the config directory first
String configDir = null;
if (args.length >= 2 && args[0].equals("-configDir")) {
configDir = args[1];
}
if (configDir == null) {
System.err
.println("Error: Configuration directory must be specified.\nWebFrontend -configDir <directory>\n");
System.exit(1);
return;
}
// load the global configuration
GlobalConfiguration.loadConfiguration(configDir);
Configuration config = GlobalConfiguration.getConfiguration();
// add stratosphere base dir to config
config.setString(ConfigConstants.STRATOSPHERE_BASE_DIR_PATH_KEY, configDir+"/..");
// get the listening port
int port = config.getInteger(ConfigConstants.WEB_FRONTEND_PORT_KEY,
ConfigConstants.DEFAULT_WEBCLIENT_PORT);
// start the server
WebInterfaceServer server = new WebInterfaceServer(config, port);
LOG.info("Starting web frontend server on port " + port + '.');
server.start();
server.join();
} catch (Throwable t) {
LOG.error("Unexpected exception: " + t.getMessage(), t);
}
}
}