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/*
* Copyright © 2016-2018 European Support Limited
*
* 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 org.onap.sdc.activityspec.api.server.filters;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response.Status;
import org.apache.commons.lang.StringUtils;
import org.onap.sdc.activityspec.utils.ActivitySpecConstant;
import org.openecomp.sdc.common.session.SessionContextProvider;
import org.openecomp.sdc.common.session.SessionContextProviderFactory;
public class ActivitySpecSessionContextFilter implements Filter {
private static final String MESSAGE_USER_MAY_NOT_BE_NULL = "{\"message\": \"User ID can not be null\"}";
@Override
public void init(FilterConfig filterConfig) {
//No ActivitySpec specific initialization required
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
throws IOException, ServletException {
final String userHeader =
((HttpServletRequest) servletRequest).getHeader(ActivitySpecConstant.USER_ID_HEADER_PARAM);
// Not a real security, just make sure the request
// has passed some authentication gateway
if (StringUtils.isEmpty(userHeader)) {
sendErrorResponse(servletResponse);
return;
}
SessionContextProvider contextProvider = SessionContextProviderFactory.getInstance().createInterface();
try {
// use the system-wide user and tenant
contextProvider.create(ActivitySpecConstant.USER, ActivitySpecConstant.TENANT);
filterChain.doFilter(servletRequest, servletResponse);
} finally {
contextProvider.close();
}
}
private void sendErrorResponse(ServletResponse servletResponse) throws IOException {
HttpServletResponse httpServletResponse = (HttpServletResponse) servletResponse;
httpServletResponse.setHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON);
httpServletResponse.setStatus(Status.UNAUTHORIZED.getStatusCode());
servletResponse.getOutputStream().write(MESSAGE_USER_MAY_NOT_BE_NULL.getBytes());
}
@Override
public void destroy() {
//No ActivitySpec specific destroy required
}
}
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