package org.apache.helix.webapp;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.helix.webapp.resources.ClusterResource;
import org.apache.helix.webapp.resources.ClustersResource;
import org.apache.helix.webapp.resources.ConfigResource;
import org.apache.helix.webapp.resources.ControllerResource;
import org.apache.helix.webapp.resources.ControllerStatusUpdateResource;
import org.apache.helix.webapp.resources.CurrentStateResource;
import org.apache.helix.webapp.resources.CurrentStatesResource;
import org.apache.helix.webapp.resources.ErrorResource;
import org.apache.helix.webapp.resources.ErrorsResource;
import org.apache.helix.webapp.resources.ExternalViewResource;
import org.apache.helix.webapp.resources.IdealStateResource;
import org.apache.helix.webapp.resources.InstanceResource;
import org.apache.helix.webapp.resources.InstancesResource;
import org.apache.helix.webapp.resources.ResourceGroupResource;
import org.apache.helix.webapp.resources.ResourceGroupsResource;
import org.apache.helix.webapp.resources.SchedulerTasksResource;
import org.apache.helix.webapp.resources.StateModelResource;
import org.apache.helix.webapp.resources.StateModelsResource;
import org.apache.helix.webapp.resources.StatusUpdateResource;
import org.apache.helix.webapp.resources.StatusUpdatesResource;
import org.apache.helix.webapp.resources.ZkChildResource;
import org.apache.helix.webapp.resources.ZkPathResource;
import org.restlet.Application;
import org.restlet.Context;
import org.restlet.Restlet;
import org.restlet.Router;
import org.restlet.data.MediaType;
import org.restlet.data.Request;
import org.restlet.data.Response;
import org.restlet.resource.StringRepresentation;
import org.restlet.util.Template;
public class RestAdminApplication extends Application
{
public static final String HELP = "help";
public static final String ZKSERVERADDRESS = "zkSvr";
public static final String PORT = "port";
public static final String ZKCLIENT = "zkClient";
public static final int DEFAULT_PORT = 8100;
public RestAdminApplication()
{
super();
}
public RestAdminApplication(Context context)
{
super(context);
}
@Override
public Restlet createRoot()
{
Router router = new Router(getContext());
router.setDefaultMatchingMode(Template.MODE_EQUALS);
router.attach("/clusters", ClustersResource.class);
router.attach("/clusters/{clusterName}", ClusterResource.class);
router.attach("/clusters/{clusterName}/resourceGroups", ResourceGroupsResource.class);
router.attach("/clusters/{clusterName}/resourceGroups/{resourceName}", ResourceGroupResource.class);
router.attach("/clusters/{clusterName}/instances", InstancesResource.class);
router.attach("/clusters/{clusterName}/instances/{instanceName}", InstanceResource.class);
router.attach("/clusters/{clusterName}/instances/{instanceName}/currentState/{resourceName}", CurrentStateResource.class);
router.attach("/clusters/{clusterName}/instances/{instanceName}/statusUpdate/{resourceName}", StatusUpdateResource.class);
router.attach("/clusters/{clusterName}/instances/{instanceName}/errors/{resourceName}", ErrorResource.class);
router.attach("/clusters/{clusterName}/instances/{instanceName}/currentState", CurrentStatesResource.class);
router.attach("/clusters/{clusterName}/instances/{instanceName}/statusUpdate", StatusUpdatesResource.class);
router.attach("/clusters/{clusterName}/instances/{instanceName}/errors", ErrorsResource.class);
router.attach("/clusters/{clusterName}/resourceGroups/{resourceName}/idealState", IdealStateResource.class);
router.attach("/clusters/{clusterName}/resourceGroups/{resourceName}/externalView", ExternalViewResource.class);
router.attach("/clusters/{clusterName}/StateModelDefs/{modelName}", StateModelResource.class);
router.attach("/clusters/{clusterName}/StateModelDefs", StateModelsResource.class);
router.attach("/clusters/{clusterName}/SchedulerTasks", SchedulerTasksResource.class);
router.attach("/clusters/{clusterName}/Controller", ControllerResource.class);
router.attach("/clusters/{clusterName}/Controller/statusUpdates/{MessageType}/{MessageId}", ControllerStatusUpdateResource.class);
router.attach("/clusters/{clusterName}/configs", ConfigResource.class);
router.attach("/clusters/{clusterName}/configs/{scope}", ConfigResource.class);
router.attach("/clusters/{clusterName}/configs/{scope}/{scopeKey1}", ConfigResource.class);
router.attach("/clusters/{clusterName}/configs/{scope}/{scopeKey1}/{scopeKey2}", ConfigResource.class);
router.attach("/zkPath", ZkPathResource.class).setMatchingMode(Template.MODE_STARTS_WITH);
router.attach("/zkChild", ZkChildResource.class).setMatchingMode(Template.MODE_STARTS_WITH);
Restlet mainpage = new Restlet()
{
@Override
public void handle(Request request, Response response)
{
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("<html>");
stringBuilder
.append("<head><title>Restlet Cluster Management page</title></head>");
stringBuilder.append("<body bgcolor=white>");
stringBuilder.append("<table border=\"0\">");
stringBuilder.append("<tr>");
stringBuilder.append("<td>");
stringBuilder.append("<h1>Rest cluster management interface V1</h1>");
stringBuilder.append("</td>");
stringBuilder.append("</tr>");
stringBuilder.append("</table>");
stringBuilder.append("</body>");
stringBuilder.append("</html>");
response.setEntity(new StringRepresentation(stringBuilder.toString(),
MediaType.TEXT_HTML));
}
};
router.attach("", mainpage);
return router;
}
public static void printUsage(Options cliOptions)
{
HelpFormatter helpFormatter = new HelpFormatter();
helpFormatter.printHelp("java " + RestAdminApplication.class.getName(), cliOptions);
}
@SuppressWarnings("static-access")
private static Options constructCommandLineOptions()
{
Option helpOption = OptionBuilder.withLongOpt(HELP)
.withDescription("Prints command-line options info").create();
helpOption.setArgs(0);
helpOption.setRequired(false);
helpOption.setArgName("print help message");
Option zkServerOption = OptionBuilder.withLongOpt(ZKSERVERADDRESS)
.withDescription("Provide zookeeper address").create();
zkServerOption.setArgs(1);
zkServerOption.setRequired(true);
zkServerOption.setArgName("ZookeeperServerAddress(Required)");
Option portOption = OptionBuilder.withLongOpt(PORT)
.withDescription("Provide web service port").create();
portOption.setArgs(1);
portOption.setRequired(false);
portOption.setArgName("web service port, default: "+ DEFAULT_PORT);
Options options = new Options();
options.addOption(helpOption);
options.addOption(zkServerOption);
options.addOption(portOption);
return options;
}
public static void processCommandLineArgs(String[] cliArgs) throws Exception
{
CommandLineParser cliParser = new GnuParser();
Options cliOptions = constructCommandLineOptions();
CommandLine cmd = null;
try
{
cmd = cliParser.parse(cliOptions, cliArgs);
}
catch (ParseException pe)
{
System.err.println("RestAdminApplication: failed to parse command-line options: "
+ pe.toString());
printUsage(cliOptions);
System.exit(1);
}
int port = DEFAULT_PORT;
if(cmd.hasOption(HELP))
{
printUsage(cliOptions);
return;
}
else if(cmd.hasOption(PORT))
{
port = Integer.parseInt(cmd.getOptionValue(PORT));
}
HelixAdminWebApp app = new HelixAdminWebApp(cmd.getOptionValue(ZKSERVERADDRESS), port);
app.start();
try
{
Thread.currentThread().join();
}
finally
{
app.stop();
}
}
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception
{
processCommandLineArgs(args);
}
}