com.calclab.emite.j2se.services.HttpConnector.java Source code

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Here is the source code for com.calclab.emite.j2se.services.HttpConnector.java

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/*
 *
 * ((e)) emite: A pure gwt (Google Web Toolkit) xmpp (jabber) library
 *
 * (c) 2008-2009 The emite development team (see CREDITS for details)
 * This file is part of emite.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package com.calclab.emite.j2se.services;

import java.text.MessageFormat;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.StringRequestEntity;
import org.apache.commons.httpclient.params.HttpClientParams;

import com.allen_sauer.gwt.log.client.Log;
import com.calclab.emite.core.client.services.ConnectorCallback;
import com.calclab.emite.core.client.services.ConnectorException;
import com.calclab.suco.client.log.Logger;

public class HttpConnector {

    private static class HttpConnectorID {
        private static int id = 0;

        public static String getNext() {
            id++;
            return String.valueOf(id);
        }

    }

    private final ExecutorService sendService;
    private final ExecutorService receiveService;

    public HttpConnector() {
        sendService = Executors.newCachedThreadPool();
        receiveService = Executors.newFixedThreadPool(1);
    }

    public synchronized void send(final String httpBase, final String xml, final ConnectorCallback callback)
            throws ConnectorException {

        sendService.execute(createSendAction(httpBase, xml, callback));
    }

    protected void debug(final String pattern, final Object... arguments) {
        final String msg = MessageFormat.format(pattern, arguments);
        Log.debug(msg);
    }

    private Runnable createResponseAction(final String xml, final ConnectorCallback callback, final String id,
            final int status, final String response) {
        final Runnable runnable = new Runnable() {
            public void run() {
                if (status == HttpStatus.SC_OK) {
                    System.out.println("RECEIVED: " + response);
                    Logger.debug("Connector [{0}] receive: {1}", id, response);
                    callback.onResponseReceived(status, response);
                } else {
                    Logger.debug("Connector [{0}] bad status: {1}", id, status);
                    callback.onError(xml, new Exception("bad http status " + status));
                }

            }

        };
        return runnable;
    }

    private Runnable createSendAction(final String httpBase, final String xml, final ConnectorCallback callback) {
        return new Runnable() {
            public void run() {
                final String id = HttpConnectorID.getNext();
                Logger.debug("Connector [{0}] send: {1}", id, xml);
                final HttpClientParams params = new HttpClientParams();
                params.setConnectionManagerTimeout(10000);
                final HttpClient client = new HttpClient(params);
                int status = 0;
                String response = null;
                final PostMethod post = new PostMethod(httpBase);

                try {
                    post.setRequestEntity(new StringRequestEntity(xml, "text/xml", "utf-8"));
                    System.out.println("SENDING: " + xml);
                    status = client.executeMethod(post);
                    response = post.getResponseBodyAsString();
                } catch (final Exception e) {
                    callback.onError(xml, e);
                    e.printStackTrace();
                } finally {
                    post.releaseConnection();
                }

                receiveService.execute(createResponseAction(xml, callback, id, status, response));
            }
        };
    }
}