HttpServer.java

package cz.cuni.mff.d3s.been.swrepository.httpserver;

import java.net.InetAddress;
import java.net.InetSocketAddress;

import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.DefaultHttpResponseFactory;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.BasicHttpProcessor;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.protocol.HttpRequestHandlerRegistry;
import org.apache.http.protocol.HttpService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A simple put/get http server used for file storage/retrieval
 * 
 * @author darklight
 * 
 */
public class HttpServer {

	private static final Logger log = LoggerFactory.getLogger(HttpServer.class);

	private final InetSocketAddress sockAddr;
	private final HttpRequestHandlerRegistry handlerResolver;
	private final HttpParams params;

	private HttpListener listenerThread;

	/**
	 * Create an HTTP server on a host/port
	 * 
	 * @param sockAddr
	 *          Socket on which the server listens
	 */
	public HttpServer(InetSocketAddress sockAddr) {
		this.sockAddr = sockAddr;
		this.handlerResolver = new HttpRequestHandlerRegistry();
		this.params = new BasicHttpParams();
	}

	/**
	 * Get the port registered by this server.
	 * 
	 * @return The port no
	 */
	public int getPort() {
		return sockAddr.getPort();
	}

	/**
	 * Get the host registered by this server.
	 * 
	 * @return The registered {@link InetAddress}
	 */
	public InetAddress getHost() {
		return sockAddr.getAddress();
	}

	/**
	 * Run the server (start listening and handling requests)
	 * 
	 * @throws HttpServerException On HTTP transport failure
	 */
	public void start() throws HttpServerException {
		HttpProcessor httpProc = new BasicHttpProcessor();

		HttpService httpService = new HttpService(httpProc, new DefaultConnectionReuseStrategy(), new DefaultHttpResponseFactory(), handlerResolver, params);

		log.debug(String.format(
				"Running listener thread on socket %s with params %s",
				sockAddr.toString(),
				params.toString()));
		listenerThread = new HttpListener(httpService, sockAddr, params);
		listenerThread.bind();
		listenerThread.start();
	}

	/**
	 * Stop the server (stop listeners)..
	 */
	public void stop() {
		listenerThread.interrupt();
	}

	/**
	 * Get the request handler resolver.
	 * 
	 * @return The resolver
	 */
	public HttpRequestHandlerRegistry getResolver() {
		return handlerResolver;
	}
}