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/** |
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* Copyright 2014 Unicon (R) Licensed under the |
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* Educational Community License, Version 2.0 (the "License"); you may |
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* not use this file except in compliance with the License. You may |
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* obtain a copy of the License at |
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* |
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* http://www.osedu.org/licenses/ECL-2.0 |
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* Unless required by applicable law or agreed to in writing, |
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* software distributed under the License is distributed on an "AS IS" |
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* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
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* or implied. See the License for the specific language governing |
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* permissions and limitations under the License. |
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* |
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*/ |
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package unicon.matthews.xapi.endpoint; |
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import java.io.IOException; |
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import javax.servlet.FilterChain; |
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import javax.servlet.ServletException; |
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import javax.servlet.http.HttpServletRequest; |
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import javax.servlet.http.HttpServletResponse; |
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import org.apache.commons.lang3.StringUtils; |
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import org.apache.log4j.Logger; |
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import org.springframework.stereotype.Component; |
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import org.springframework.web.filter.OncePerRequestFilter; |
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/** |
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* @author ggilbert |
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* |
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*/ |
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@Component |
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public class XAPIRequestValidationFilter extends OncePerRequestFilter { |
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private Logger log = Logger.getLogger(XAPIRequestValidationFilter.class); |
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@Override |
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protected void doFilterInternal(HttpServletRequest request, |
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HttpServletResponse response, FilterChain filterChain) |
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throws ServletException, IOException { |
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String versionHeader = request.getHeader(XApiConstants.XAPI_VERSION_HEADER); |
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log.debug(String.format("versionHeader {}",versionHeader)); |
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if (StringUtils.isNotBlank(versionHeader)) { |
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// for now we are just checking for the header |
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// in the future we'll deal with specific versioning checking |
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filterChain.doFilter(request, response); |
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} |
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else { |
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log.warn("Request missing XAPI VERSION HEADER"); |
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response.sendError(400, "Missing "+XApiConstants.XAPI_VERSION_HEADER+" Header"); |
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} |
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} |
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} |
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