dk.cphbusiness.group11.Translators.PoorBankWS.TranslatorPoorBankWS.java Source code

Introduction

Here is the source code for dk.cphbusiness.group11.Translators.PoorBankWS.TranslatorPoorBankWS.java

Source

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package dk.cphbusiness.group11.Translators.PoorBankWS;

import java.io.ByteArrayInputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.QueueingConsumer;

import dk.cphbusiness.group11.PoorBankWS.PoorBankService;
import dk.cphbusiness.group11.PoorBankWS.PoorBankService_Service;
import dk.cphbusiness.group11.PoorBankWS.PoorLoanResponsee;

/**
 *
 * @author Paul
 */
public class TranslatorPoorBankWS {
    private static final String RECEIVING_QUEUE = "translator.group11.PoorBankWS";
    private static final String SENDING_QUEUE = "normalizer.group11.webServiceBank";
    private boolean isRunning;

    public TranslatorPoorBankWS() {
        this.isRunning = true;
    }

    private void parseAndProcessXmlMessage(String xmlMessage) throws Exception {
        DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = builderFactory.newDocumentBuilder();

        Document loanRequestXml = builder.parse(new ByteArrayInputStream(xmlMessage.getBytes()));
        XPath xPath = XPathFactory.newInstance().newXPath();
        Element loanDetailsElement = (Element) xPath.compile("/LoanDetails").evaluate(loanRequestXml,
                XPathConstants.NODE);
        String ssn = loanDetailsElement.getElementsByTagName("ssn").item(0).getTextContent();
        int creditScore = Integer
                .parseInt(loanDetailsElement.getElementsByTagName("creditScore").item(0).getTextContent());
        double loanAmount = Double
                .parseDouble(loanDetailsElement.getElementsByTagName("loanAmount").item(0).getTextContent());
        String temp = loanDetailsElement.getElementsByTagName("loanDurationInMonths").item(0).getTextContent();
        int loanDurationInMonths = Integer.parseInt(temp);

        PoorBankService_Service service = new PoorBankService_Service();
        PoorBankService port = service.getPoorBankServiceImplPort();
        PoorLoanResponsee result = port.poorLoan(ssn, creditScore, loanAmount, loanDurationInMonths);

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("datdb.cphbusiness.dk");
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        channel.exchangeDeclare(SENDING_QUEUE, "fanout");

        String xmlReturnMessage = "<LoanResponse>" + "<interestRate>" + result.getInterestRate()
                + "</interestRate> \n" + "   <ssn>" + result.getSsn() + "</ssn> \n" + "</LoanResponse>";
        channel.basicPublish(SENDING_QUEUE, "", null, xmlReturnMessage.getBytes());

    }

    public void run() throws Exception {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("datdb.cphbusiness.dk");
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        channel.exchangeDeclare(RECEIVING_QUEUE, "fanout");
        String queueName = channel.queueDeclare(RECEIVING_QUEUE, false, false, false, null).getQueue();
        channel.queueBind(queueName, RECEIVING_QUEUE, "");
        System.out.println("Waiting for messages on queue: " + RECEIVING_QUEUE);

        QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(queueName, true, consumer);

        while (this.isRunning) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());

            System.out.println("Received '" + message + "'");

            this.parseAndProcessXmlMessage(message);
        }
    }

    public static void main(String[] args) throws Exception {
        TranslatorPoorBankWS t = new TranslatorPoorBankWS();
        t.run();
    }
}