org.motechproject.mobile.omp.manager.intellivr.IntellIVRServerImpl.java Source code

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Here is the source code for org.motechproject.mobile.omp.manager.intellivr.IntellIVRServerImpl.java

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/**
 * MOTECH PLATFORM OPENSOURCE LICENSE AGREEMENT
 *
 * Copyright (c) 2010-11 The Trustees of Columbia University in the City of
 * New York and Grameen Foundation USA.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of Grameen Foundation USA, Columbia University, or
 * their respective contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY GRAMEEN FOUNDATION USA, COLUMBIA UNIVERSITY
 * AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GRAMEEN FOUNDATION
 * USA, COLUMBIA UNIVERSITY OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.motechproject.mobile.omp.manager.intellivr;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Implementation of the {@link IntellIVRServer} interface for requesting calls
 * be initiated to the user
 * @author fcbrooks
 *
 */
public class IntellIVRServerImpl implements IntellIVRServer {

    private String serverURL;
    private JAXBContext jaxbc;

    private Log log = LogFactory.getLog(IntellIVRServerImpl.class);

    public void init() {
        try {
            jaxbc = JAXBContext.newInstance("org.motechproject.mobile.omp.manager.intellivr");
        } catch (JAXBException e) {
            log.error(e.getMessage());
        }
    }

    public ResponseType requestCall(RequestType request) {

        AutoCreate ac = new AutoCreate();
        ac.setRequest(request);

        ResponseType response = null;

        try {

            Marshaller marshaller = jaxbc.createMarshaller();
            Unmarshaller unmarshaller = jaxbc.createUnmarshaller();

            ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
            marshaller.marshal(ac, byteStream);

            String xml = byteStream.toString();

            URL url = new URL(this.serverURL);
            URLConnection con = url.openConnection();

            con.setDoInput(true);
            con.setDoOutput(true);

            con.setRequestProperty("Content-Type", "text/xml");
            con.setRequestProperty("Content-transfer-encoding", "text");

            OutputStreamWriter out = new OutputStreamWriter(con.getOutputStream());

            log.info("Sending request: " + xml);

            out.write(xml);
            out.flush();
            out.close();

            InputStream in = con.getInputStream();

            int len = 4096;
            byte[] buffer = new byte[len];
            int off = 0;
            int read = 0;
            while ((read = in.read(buffer, off, len)) != -1) {
                off += read;
                len -= off;
            }

            String responseText = new String(buffer, 0, off);

            log.debug("Received response: " + responseText);

            Object o = unmarshaller.unmarshal(new ByteArrayInputStream(responseText.getBytes()));

            if (o instanceof AutoCreate) {
                AutoCreate acr = (AutoCreate) o;
                response = acr.getResponse();
            }

        } catch (MalformedURLException e) {
            log.error("", e);
        } catch (IOException e) {
            log.error("", e);
        } catch (JAXBException e) {
            log.error("", e);
        } finally {
            if (response == null) {
                response = new ResponseType();
                response.setStatus(StatusType.ERROR);
                response.setErrorCode(ErrorCodeType.MOTECH_UNKNOWN_ERROR);
                response.setErrorString("Unknown error occurred sending request to IVR server");
            }

        }
        return response;
    }

    public String getServerURL() {
        return serverURL;
    }

    public void setServerURL(String serverURL) {
        this.serverURL = serverURL;
    }

}