/*
* 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.
*/
package org.apache.droids.dynamic;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.apache.droids.api.Droid;
import org.apache.droids.robot.crawler.CrawlingDroid;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* The principal class to start droids. The commandline prepares the context
* and starts the droid that is specified in the arguments.
*
* @version 1.0
*
*/
public class Cli {
private Cli(){
}
private static final Logger LOG = LoggerFactory.getLogger(Cli.class);
/**
* Invoke the processing with droids.
* @param args You need to provide the droid name (e.g. crawler-x-m02y07) and optional the config file.
* @throws Exception
*/
public static void main(String[] args) throws Exception {
if (args.length < 1) {
LOG.error("To invoke a droid:\n"
+ "You need to provide a droid name (e.g. crawler-x-m02y07)" +
" and optionally an initial location to crawl");
return;
}
String name = args[0];
String location = null;
if (args.length > 1) {
location = args[1];
}
ApplicationContext context = new ClassPathXmlApplicationContext(
"classpath:/org/apache/droids/dynamic/droids-core-context.xml");
DroidsConfig config = (DroidsConfig) context.getBean("org.apache.droids.dynamic.DroidsConfig");
Droid droid = config.getDroid(name);
if (droid == null) {
LOG.error("Droid " + name + " is not defined");
LOG.error(getUsage());
return;
}
LOG.info("A p a c h e D r o i d s - an intelligent robot framework");
if (droid instanceof CrawlingDroid) {
List<String> locations = new ArrayList<String>();
if (location == null) {
LOG.error("Droid " + name + " is a crawler, however you have not defined a starting location.");
LOG.error(getUsage());
return;
}
locations.add(location);
((CrawlingDroid) droid).setInitialLocations(locations);
}
droid.init();
droid.start();
droid.getTaskMaster().awaitTermination(0, TimeUnit.MILLISECONDS);
}
private static String getUsage() {
StringBuffer message = new StringBuffer();
message.append("Please start Droids like follows. ");
message.append("\n");
message.append("The first argument should define the name of " +
"the droid you want to start (e.g. \"hello\"). ");
message.append("\n");
message.append("The second argument may be a starting location. " +
"This initial location is mandatory for crawler and walker, so you need to define it.");
return message.toString();
}
}