gov.nih.nci.cabig.open2caaers.binding.ParticipantODMMessageBinding.java Source code

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Here is the source code for gov.nih.nci.cabig.open2caaers.binding.ParticipantODMMessageBinding.java

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/*******************************************************************************
 * Copyright SemanticBits, Northwestern University and Akaza Research
 * 
 * Distributed under the OSI-approved BSD 3-Clause License.
 * See http://ncip.github.com/caaers/LICENSE.txt for details.
 ******************************************************************************/

package gov.nih.nci.cabig.open2caaers.binding;

import java.io.IOException;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import gov.nih.nci.cabig.caaers2adeers.exchnage.ExchangePreProcessor;
import gov.nih.nci.cabig.caaers2adeers.exchnage.HeaderGeneratorProcessor;
import org.apache.camel.Exchange;
import org.apache.camel.component.http.DefaultHttpBinding;
import org.apache.camel.component.http.HttpEndpoint;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.xml.sax.InputSource;

public class ParticipantODMMessageBinding extends DefaultHttpBinding {
    private static Log log = LogFactory.getLog(ParticipantODMMessageBinding.class);

    private Map<String, Integer> codeMap = new HashMap<String, Integer>();

    public ParticipantODMMessageBinding(HttpEndpoint ep) {
        super();
    }

    public ParticipantODMMessageBinding() {
        super();
        codeMap.put("WS_GEN_003", 401);
        codeMap.put("WS_GEN_005", 401);
        codeMap.put("WS_GEN_007", 400); // invalid xml
        codeMap.put("WS_GEN_008", 401); // authentication not found
        codeMap.put("WS_GEN_009", 401); // wrong username/password
        codeMap.put("WS_GEN_010", 500); // something went wrong
        codeMap.put("WS_PMS_002", 404);
        codeMap.put("WS_PMS_003", 200);
        codeMap.put("WS_PMS_004", 409);
        codeMap.put("WS_PMS_005", 500);
        codeMap.put("WS_PMS_006", 200);
        codeMap.put("WS_PMS_007", 500);
        codeMap.put("WS_PMS_013", 400);
        codeMap.put("WS_PMS_014", 400);
        codeMap.put("WS_PMS_015", 400);
        codeMap.put("WS_PMS_017", 400);
    }

    @Override
    public void writeResponse(Exchange exchange, HttpServletResponse response) throws IOException {
        // get the status code from the mapping and set it here
        String body = exchange.getOut().getBody(String.class);

        if (StringUtils.isBlank(body)) {
            // if body is null do the default processing and return
            super.writeResponse(exchange, response);
            return;
        }
        XPath xPath = XPathFactory.newInstance().newXPath();
        String errorMessage = "";
        try {
            errorMessage = xPath.evaluate("/Response/@ErrorClientResponseMessage",
                    new InputSource(new StringReader(body)));
        } catch (XPathExpressionException e) {
            log.debug(e);
        }

        String reasonCode = "";

        try {
            reasonCode = xPath.evaluate("/Response/@ReasonCode", new InputSource(new StringReader(body)));
        } catch (XPathExpressionException e) {
            log.debug(e);
        }

        if (reasonCode.equals("soap:Client")) {
            // signifies XML validation failed
            reasonCode = "WS_GEN_007";
            String referenceNumber = String.valueOf(exchange.getProperty(ExchangePreProcessor.CORRELATION_ID));
            response.setStatus(codeMap.get(reasonCode));
            response.getWriter()
                    .write("<Response ReferenceNumber=\"" + referenceNumber
                            + "\" IsTransactionSuccessful=\"0\" ReasonCode=\"" + reasonCode
                            + "\" ErrorClientResponseMessage=\""
                            + "Schema validation failed as required by caAERS Participant Service: " + errorMessage
                            + "\"/>");

        } else {
            exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, codeMap.get(reasonCode));
            super.writeResponse(exchange, response);
        }

    }

    @Override
    public void doWriteExceptionResponse(Throwable exception, HttpServletResponse response) throws IOException {

        String referenceNumber = HeaderGeneratorProcessor.makeCorrelationId();
        // and return this fixed text
        if (exception.getMessage().contains("No Authentication found")) {
            response.setStatus(401);
            response.getWriter().write("<Response ReferenceNumber=\"" + referenceNumber
                    + "\" IsTransactionSuccessful=\"0\" ReasonCode=\"WS_GEN_008\" ErrorClientResponseMessage=\"Username/Password not provided\"/>");
            return;
        }

        if (exception.getMessage().contains("Invalid Authentication")) {
            response.setStatus(401);
            response.getWriter().write("<Response ReferenceNumber=\"" + referenceNumber
                    + "\" IsTransactionSuccessful=\"0\" ReasonCode=\"WS_GEN_009\" ErrorClientResponseMessage=\"Incorrect Username/Password\"/>");
            return;
        }

        if (exception instanceof ClassCastException) {
            // signifies the input xml is not valid
            response.setStatus(400);
            response.getWriter()
                    .write("<Response ReferenceNumber=\"" + referenceNumber + "\" IsTransactionSuccessful=\"0\" "
                            + "ReasonCode=\"WS_GEN_007\" ErrorClientResponseMessage=\"Invalid XML\"/>");
            return;
        }

        // return HTTP 500 to signify something went wrong
        response.setStatus(500);
        response.getWriter().write("<Response ReferenceNumber=\"" + referenceNumber
                + "\" IsTransactionSuccessful=\"0\" ReasonCode=\"WS_GEN_010\" ErrorClientResponseMessage=\"Unexpected internal error\"/>");
        log.debug("exception in ODM participant service " + exception.getMessage());
    }
}