be.dnsbelgium.rdap.spring.security.RDAPErrorHandler.java Source code

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Here is the source code for be.dnsbelgium.rdap.spring.security.RDAPErrorHandler.java

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/**
 * Copyright 2014 DNS Belgium vzw
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package be.dnsbelgium.rdap.spring.security;

import be.dnsbelgium.rdap.Controllers;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandlerImpl;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class RDAPErrorHandler extends AccessDeniedHandlerImpl {

    private final ObjectMapper mapper;

    public RDAPErrorHandler() {
        super();
        mapper = new ObjectMapper();
        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
    }

    @Override
    public final void handle(final HttpServletRequest request, final HttpServletResponse response,
            final AccessDeniedException e) throws IOException, ServletException {
        if (e instanceof RDAPErrorException) {
            response.setContentType(Controllers.CONTENT_TYPE);
            RDAPErrorException exception = (RDAPErrorException) e;
            response.setStatus(exception.getErrorCode());
            mapper.writeValue(response.getOutputStream(), exception);
            response.flushBuffer();
        } else {
            super.handle(request, response, e);
        }
    }
}