CompareDatastreamChecksumHandler.java

package org.fcrepo.server.security.xacml.pep.ws.operations;

import java.net.URI;
import java.util.HashMap;
import java.util.Map;

import javax.xml.ws.handler.soap.SOAPMessageContext;

import org.apache.cxf.binding.soap.SoapFault;
import org.fcrepo.common.Constants;
import org.fcrepo.server.security.RequestCtx;
import org.fcrepo.server.security.xacml.pep.ContextHandler;
import org.fcrepo.server.security.xacml.pep.PEPException;
import org.fcrepo.server.security.xacml.pep.ResourceAttributes;
import org.fcrepo.server.security.xacml.util.LogUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.jboss.security.xacml.sunxacml.attr.AttributeValue;
import org.jboss.security.xacml.sunxacml.attr.DateTimeAttribute;
import org.jboss.security.xacml.sunxacml.attr.StringAttribute;


public class CompareDatastreamChecksumHandler extends AbstractOperationHandler {

    private static final Logger logger =
            LoggerFactory.getLogger(CompareDatastreamChecksumHandler.class);

    public CompareDatastreamChecksumHandler(ContextHandler contextHandler)
            throws PEPException {
        super(contextHandler);
    }

    @Override
    public RequestCtx handleRequest(SOAPMessageContext context)
            throws OperationHandlerException {
        logger.debug("GetDatastreamHandler/handleRequest!");

        RequestCtx req = null;
        Object oMap = null;

        String pid = null;
        String dsID = null;
        String versionDate = null;

        try {
            oMap = getSOAPRequestObjects(context);
            logger.debug("Retrieved SOAP Request Objects");
        } catch (SoapFault af) {
            logger.error("Error obtaining SOAP Request Objects", af);
            throw new OperationHandlerException("Error obtaining SOAP Request Objects",
                                                af);
        }

        try {
            pid = (String) callGetter("getPid",oMap);
            dsID = (String) callGetter("getDsID", oMap);
            versionDate = (String) callGetter("getVersionDate", oMap);
        } catch (Exception e) {
            logger.error("Error obtaining parameters", e);
            throw new OperationHandlerException("Error obtaining parameters.",
                                                e);
        }

        logger.debug("Extracted SOAP Request Objects");

        Map<URI, AttributeValue> actions = new HashMap<URI, AttributeValue>();
        Map<URI, AttributeValue> resAttr;

        try {
            resAttr = ResourceAttributes.getResources(pid);
            if (dsID != null && !dsID.isEmpty()) {
                resAttr.put(Constants.DATASTREAM.ID.getURI(),
                            new StringAttribute(dsID));
            }
            if (versionDate != null && !versionDate.isEmpty()) {
                resAttr.put(Constants.DATASTREAM.AS_OF_DATETIME.getURI(),
                            DateTimeAttribute.getInstance(versionDate));
            }

            actions.put(Constants.ACTION.ID.getURI(),
                        Constants.ACTION.COMPARE_DATASTREAM_CHECKSUM
                                .getStringAttribute());
            actions.put(Constants.ACTION.API.getURI(),
                        Constants.ACTION.APIM.getStringAttribute());

            req =
                    getContextHandler().buildRequest(getSubjects(context),
                                                     actions,
                                                     resAttr,
                                                     getEnvironment(context));

            LogUtil.statLog(getUser(context),
                            Constants.ACTION.COMPARE_DATASTREAM_CHECKSUM.uri,
                            pid,
                            dsID);
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
            throw new OperationHandlerException(e.getMessage(), e);
        }

        return req;
        }

    @Override
    public RequestCtx handleResponse(SOAPMessageContext context)
            throws OperationHandlerException {
        return null;
    }

}