se.vgregion.pubsub.inttest.SubscriberRunner.java Source code

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Here is the source code for se.vgregion.pubsub.inttest.SubscriberRunner.java

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/**
 * Copyright 2010 Vstra Gtalandsregionen
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of version 2.1 of the GNU Lesser General Public
 *   License as published by the Free Software Foundation.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the
 *   Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 *   Boston, MA 02111-1307  USA
 *
 */

package se.vgregion.pubsub.inttest;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.localserver.LocalTestServer;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpRequestHandler;

public class SubscriberRunner {

    public static void main(String[] args) throws Exception {

        LocalTestServer server = new LocalTestServer(null, null);

        server.register("/*", new HttpRequestHandler() {
            @Override
            public void handle(HttpRequest request, HttpResponse response, HttpContext context)
                    throws HttpException, IOException {
                String challenge = getQueryParamValue(request.getRequestLine().getUri(), "hub.challenge");

                if (challenge != null) {
                    // subscription verification, confirm
                    System.out.println("Respond to challenge");
                    response.setEntity(new StringEntity(challenge));
                } else if (request instanceof HttpEntityEnclosingRequest) {
                    HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
                    //                    System.out.println(HttpUtil.readContent(entity));
                } else {
                    System.err.println("Unknown request");
                }
            }
        });
        server.start();

        HttpPost post = new HttpPost("http://localhost:8080/");

        List<NameValuePair> parameters = new ArrayList<NameValuePair>();
        parameters.add(new BasicNameValuePair("hub.callback", buildTestUrl(server, "/").toString()));
        parameters.add(new BasicNameValuePair("hub.mode", "subscribe"));
        parameters.add(new BasicNameValuePair("hub.topic", "http://feeds.feedburner.com/protocol7/main"));
        parameters.add(new BasicNameValuePair("hub.verify", "sync"));

        post.setEntity(new UrlEncodedFormEntity(parameters));

        DefaultHttpClient client = new DefaultHttpClient();
        client.execute(post);
    }

    private static URI buildTestUrl(LocalTestServer server, String path) throws URISyntaxException {
        return new URI("http://" + server.getServiceHostName() + ":" + server.getServicePort() + path);
    }

    private static String getQueryParamValue(String url, String name) {
        int start = url.indexOf(name);
        if (start > -1) {
            int end = url.indexOf("&", start + 1);
            if (end == -1) {
                end = url.length();
            }

            return url.substring(start + name.length() + 1, end);
        } else {
            return null;
        }
    }

}