1 /*******************************************************************************
2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 * ============LICENSE_END=========================================================
19 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
21 *******************************************************************************/
22 package org.onap.dmaap.messagerouter.msgrtr.nsa.filter;
24 import java.io.IOException;
26 import javax.servlet.Filter;
27 import javax.servlet.FilterChain;
28 import javax.servlet.FilterConfig;
29 import javax.servlet.ServletException;
30 import javax.servlet.ServletRequest;
31 import javax.servlet.ServletResponse;
32 import javax.servlet.http.HttpServletRequest;
34 import org.apache.http.HttpStatus;
35 import com.att.eelf.configuration.EELFLogger;
36 import com.att.eelf.configuration.EELFManager;
37 import org.json.JSONObject;
38 import org.onap.dmaap.messagerouter.msgrtr.nsa.cambria.CambriaApiException;
39 import org.onap.dmaap.messagerouter.msgrtr.nsa.cambria.exception.DMaaPErrorMessages;
40 import org.onap.dmaap.messagerouter.msgrtr.nsa.cambria.exception.DMaaPResponseCode;
41 import org.onap.dmaap.messagerouter.msgrtr.nsa.cambria.exception.ErrorResponse;
42 import org.springframework.context.ApplicationContext;
43 import org.springframework.web.context.support.WebApplicationContextUtils;
46 * Servlet Filter implementation class ContentLengthFilter
48 public class ContentLengthFilter implements Filter {
50 private DefaultLength defaultLength;
52 private FilterConfig filterConfig = null;
53 DMaaPErrorMessages errorMessages = null;
54 //private Logger log = Logger.getLogger(ContentLengthFilter.class.toString());
55 private static final EELFLogger log = EELFManager.getInstance().getLogger(ContentLengthFilter.class);
57 * Default constructor.
60 public ContentLengthFilter() {
61 // TODO Auto-generated constructor stub
65 * @see Filter#destroy()
67 public void destroy() {
68 // TODO Auto-generated method stub
72 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
74 public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException,
76 // TODO Auto-generated method stub
77 // place your code here
78 log.info("inside servlet do filter content length checking before pub/sub");
79 HttpServletRequest request = (HttpServletRequest) req;
80 JSONObject jsonObj = null;
81 int requestLength = 0;
83 // retrieving content length from message header
85 if (null != request.getHeader("Content-Length")) {
86 requestLength = Integer.parseInt(request.getHeader("Content-Length"));
88 // retrieving encoding from message header
89 String transferEncoding = request.getHeader("Transfer-Encoding");
90 // checking for no encoding, chunked and requestLength greater then
92 if (null != transferEncoding && !(transferEncoding.contains("chunked"))
93 && (requestLength > Integer.parseInt(defaultLength.getDefaultLength()))) {
94 jsonObj = new JSONObject().append("defaultlength", defaultLength)
95 .append("requestlength", requestLength);
96 log.error("message length is greater than default");
97 throw new CambriaApiException(jsonObj);
98 } else if (null == transferEncoding && (requestLength > Integer.parseInt(defaultLength.getDefaultLength()))) {
99 jsonObj = new JSONObject().append("defaultlength", defaultLength.getDefaultLength()).append(
100 "requestlength", requestLength);
101 log.error("Request message is not chunked or request length is greater than default length");
102 throw new CambriaApiException(jsonObj);
104 chain.doFilter(req, res);
106 } catch (CambriaApiException | NumberFormatException e) {
107 log.error("message size is greater then default");
108 ErrorResponse errRes = new ErrorResponse(HttpStatus.SC_EXPECTATION_FAILED,
109 DMaaPResponseCode.MSG_SIZE_EXCEEDS_MSG_LIMIT.getResponseCode(), errorMessages.getMsgSizeExceeds()
110 + jsonObj.toString());
111 log.info(errRes.toString());
112 // throw new CambriaApiException(errRes);
118 * @see Filter#init(FilterConfig)
120 public void init(FilterConfig fConfig) throws ServletException {
121 // TODO Auto-generated method stub
122 this.filterConfig = fConfig;
123 log.info("Filter Content Length Initialize");
124 ApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext(fConfig
125 .getServletContext());
126 DefaultLength defLength = (DefaultLength) ctx.getBean("defLength");
127 DMaaPErrorMessages errorMessages = (DMaaPErrorMessages) ctx.getBean("DMaaPErrorMessages");
128 this.errorMessages = errorMessages;
129 this.defaultLength = defLength;