src/main/java/de/ids_mannheim/korap/web/filter/BlockingFilter.java

package de.ids_mannheim.korap.web.filter;

import com.sun.jersey.spi.container.ContainerRequest;
import com.sun.jersey.spi.container.ContainerRequestFilter;
import com.sun.jersey.spi.container.ContainerResponseFilter;
import com.sun.jersey.spi.container.ResourceFilter;
import de.ids_mannheim.korap.web.utils.KustvaktResponseHandler;

import javax.ws.rs.ext.Provider;

/**
 * @author hanl
 * @date 11/12/2014
 * <p/>
 * endpoint filter to block access to an endpoint, in case no anonymous access should be allowed!
 */
@Provider
public class BlockingFilter implements ContainerRequestFilter, ResourceFilter {

    @Override
    public ContainerRequest filter(ContainerRequest request) {
        String authentication = request
                .getHeaderValue(ContainerRequest.AUTHORIZATION);
        if (authentication == null || authentication.isEmpty())
            throw KustvaktResponseHandler.throwAuthenticationException();
        return request;
    }

    @Override
    public ContainerRequestFilter getRequestFilter() {
        return this;
    }

    @Override
    public ContainerResponseFilter getResponseFilter() {
        return null;
    }
}