1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*******************************************************************************
* ============LICENSE_START=======================================================
* org.onap.dmaap
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*
*******************************************************************************/
package org.onap.dmaap.messagerouter.msgrtr.nsa.filter;
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 org.apache.http.HttpStatus;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import org.json.JSONObject;
import org.onap.dmaap.messagerouter.msgrtr.nsa.cambria.CambriaApiException;
import org.onap.dmaap.messagerouter.msgrtr.nsa.cambria.exception.DMaaPErrorMessages;
import org.onap.dmaap.messagerouter.msgrtr.nsa.cambria.exception.DMaaPResponseCode;
import org.onap.dmaap.messagerouter.msgrtr.nsa.cambria.exception.ErrorResponse;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
/**
* Servlet Filter implementation class ContentLengthFilter
*/
public class ContentLengthFilter implements Filter {
private DefaultLength defaultLength;
private FilterConfig filterConfig = null;
DMaaPErrorMessages errorMessages = null;
//private Logger log = Logger.getLogger(ContentLengthFilter.class.toString());
private static final EELFLogger log = EELFManager.getInstance().getLogger(ContentLengthFilter.class);
/**
* Default constructor.
*/
public ContentLengthFilter() {
// TODO Auto-generated constructor stub
}
/**
* @see Filter#destroy()
*/
public void destroy() {
// TODO Auto-generated method stub
}
/**
* @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
*/
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException,
ServletException {
// TODO Auto-generated method stub
// place your code here
log.info("inside servlet do filter content length checking before pub/sub");
HttpServletRequest request = (HttpServletRequest) req;
JSONObject jsonObj = null;
int requestLength = 0;
try {
// retrieving content length from message header
if (null != request.getHeader("Content-Length")) {
requestLength = Integer.parseInt(request.getHeader("Content-Length"));
}
// retrieving encoding from message header
String transferEncoding = request.getHeader("Transfer-Encoding");
// checking for no encoding, chunked and requestLength greater then
// default length
if (null != transferEncoding && !(transferEncoding.contains("chunked"))
&& (requestLength > Integer.parseInt(defaultLength.getDefaultLength()))) {
jsonObj = new JSONObject().append("defaultlength", defaultLength)
.append("requestlength", requestLength);
log.error("message length is greater than default");
throw new CambriaApiException(jsonObj);
} else if (null == transferEncoding && (requestLength > Integer.parseInt(defaultLength.getDefaultLength()))) {
jsonObj = new JSONObject().append("defaultlength", defaultLength.getDefaultLength()).append(
"requestlength", requestLength);
log.error("Request message is not chunked or request length is greater than default length");
throw new CambriaApiException(jsonObj);
} else {
chain.doFilter(req, res);
}
} catch (CambriaApiException | NumberFormatException e) {
log.error("message size is greater then default");
ErrorResponse errRes = new ErrorResponse(HttpStatus.SC_EXPECTATION_FAILED,
DMaaPResponseCode.MSG_SIZE_EXCEEDS_MSG_LIMIT.getResponseCode(), errorMessages.getMsgSizeExceeds()
+ jsonObj.toString());
log.info(errRes.toString());
// throw new CambriaApiException(errRes);
}
}
/**
* @see Filter#init(FilterConfig)
*/
public void init(FilterConfig fConfig) throws ServletException {
// TODO Auto-generated method stub
this.filterConfig = fConfig;
log.info("Filter Content Length Initialize");
ApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext(fConfig
.getServletContext());
DefaultLength defLength = (DefaultLength) ctx.getBean("defLength");
DMaaPErrorMessages errorMessages = (DMaaPErrorMessages) ctx.getBean("DMaaPErrorMessages");
this.errorMessages = errorMessages;
this.defaultLength = defLength;
}
}
|
