/*******************************************************************************
* 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.nutch.api;
import java.util.List;
import java.util.logging.Level;
import org.apache.nutch.api.JobStatus.State;
import org.restlet.Component;
import org.restlet.data.Protocol;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class NutchServer {
private static final Logger LOG = LoggerFactory.getLogger(NutchServer.class);
private Component component;
private NutchApp app;
private int port;
private boolean running;
public NutchServer(int port) {
this.port = port;
// Create a new Component.
component = new Component();
//component.getLogger().setLevel(Level.FINEST);
// Add a new HTTP server listening on port 8182.
component.getServers().add(Protocol.HTTP, port);
// Attach the application.
app = new NutchApp();
component.getDefaultHost().attach("/nutch", app);
NutchApp.server = this;
}
public boolean isRunning() {
return running;
}
public void start() throws Exception {
LOG.info("Starting NutchServer on port " + port + "...");
component.start();
LOG.info("Started NutchServer on port " + port);
running = true;
NutchApp.started = System.currentTimeMillis();
}
public boolean canStop() throws Exception {
List<JobStatus> jobs = NutchApp.jobMgr.list(null, State.RUNNING);
if (!jobs.isEmpty()) {
return false;
}
return true;
}
public boolean stop(boolean force) throws Exception {
if (!running) {
return true;
}
if (!canStop() && !force) {
LOG.warn("Running jobs - can't stop now.");
return false;
}
LOG.info("Stopping NutchServer on port " + port + "...");
component.stop();
LOG.info("Stopped NutchServer on port " + port);
running = false;
return true;
}
public static void main(String[] args) throws Exception {
if (args.length == 0) {
System.err.println("Usage: NutchServer <port>");
System.exit(-1);
}
int port = Integer.parseInt(args[0]);
NutchServer server = new NutchServer(port);
server.start();
}
}