2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Modifications Copyright (C) 2018 IBM.
8 * ================================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============LICENSE_END=========================================================
23 package org.onap.logging.filter.base;
25 import java.io.BufferedReader;
26 import java.io.ByteArrayInputStream;
27 import java.io.ByteArrayOutputStream;
28 import java.io.IOException;
29 import java.io.InputStream;
30 import java.io.InputStreamReader;
31 import java.io.PrintWriter;
32 import java.util.zip.GZIPInputStream;
34 import javax.servlet.Filter;
35 import javax.servlet.FilterChain;
36 import javax.servlet.FilterConfig;
37 import javax.servlet.ReadListener;
38 import javax.servlet.ServletException;
39 import javax.servlet.ServletInputStream;
40 import javax.servlet.ServletOutputStream;
41 import javax.servlet.ServletRequest;
42 import javax.servlet.ServletResponse;
43 import javax.servlet.WriteListener;
44 import javax.servlet.http.HttpServletRequest;
45 import javax.servlet.http.HttpServletRequestWrapper;
46 import javax.servlet.http.HttpServletResponse;
47 import javax.servlet.http.HttpServletResponseWrapper;
49 public class PayloadLoggingServletFilter extends AbstractServletFilter implements Filter {
51 private static org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(PayloadLoggingServletFilter.class);
53 private static class ByteArrayServletStream extends ServletOutputStream {
54 ByteArrayOutputStream baos;
56 ByteArrayServletStream(ByteArrayOutputStream baos) {
61 public void write(int param) throws IOException {
66 public boolean isReady() {
71 public void setWriteListener(WriteListener arg0) {
72 // this method does nothing
76 private static class ByteArrayPrintWriter extends PrintWriter {
77 private ByteArrayOutputStream baos;
78 private int errorCode = -1;
79 private String errorMsg = "";
80 private boolean errored = false;
82 public ByteArrayPrintWriter(ByteArrayOutputStream out) {
87 public ServletOutputStream getStream() {
88 return new ByteArrayServletStream(baos);
91 public Boolean hasErrored() {
95 public int getErrorCode() {
99 public String getErrorMsg() {
103 public void setError(int code) {
108 public void setError(int code, String msg) {
116 private class BufferedServletInputStream extends ServletInputStream {
117 ByteArrayInputStream bais;
119 public BufferedServletInputStream(ByteArrayInputStream bais) {
124 public int available() {
125 return bais.available();
134 public int read(byte[] buf, int off, int len) {
135 return bais.read(buf, off, len);
139 public boolean isFinished() {
140 return available() < 1;
144 public boolean isReady() {
149 public void setReadListener(ReadListener arg0) {
150 // this method does nothing
155 private class BufferedRequestWrapper extends HttpServletRequestWrapper {
156 ByteArrayInputStream bais;
157 ByteArrayOutputStream baos;
158 BufferedServletInputStream bsis;
161 public BufferedRequestWrapper(HttpServletRequest req) throws IOException {
164 InputStream is = req.getInputStream();
165 baos = new ByteArrayOutputStream();
166 byte[] buf = new byte[1024];
168 while ((letti = is.read(buf)) > 0) {
169 baos.write(buf, 0, letti);
171 buffer = baos.toByteArray();
175 public ServletInputStream getInputStream() {
177 bais = new ByteArrayInputStream(buffer);
178 bsis = new BufferedServletInputStream(bais);
179 } catch (Exception ex) {
180 log.error("Exception in getInputStream", ex);
185 public byte[] getBuffer() {
191 public void init(FilterConfig filterConfig) throws ServletException {
192 // this method does nothing
196 public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
197 throws IOException, ServletException {
198 final HttpServletRequest httpRequest = (HttpServletRequest) servletRequest;
199 BufferedRequestWrapper bufferedRequest = new BufferedRequestWrapper(httpRequest);
201 StringBuilder requestHeaders = new StringBuilder("REQUEST|");
202 requestHeaders.append(httpRequest.getMethod());
203 requestHeaders.append(":");
204 requestHeaders.append(httpRequest.getRequestURL().toString());
205 requestHeaders.append("|");
206 requestHeaders.append(getSecureRequestHeaders(httpRequest));
207 log.info(requestHeaders.toString());
209 log.info("REQUEST BODY|" + new String(bufferedRequest.getBuffer()));
211 final HttpServletResponse response = (HttpServletResponse) servletResponse;
212 final ByteArrayOutputStream baos = new ByteArrayOutputStream();
213 final ByteArrayPrintWriter pw = new ByteArrayPrintWriter(baos);
215 HttpServletResponse wrappedResp = new HttpServletResponseWrapper(response) {
217 public PrintWriter getWriter() {
222 public ServletOutputStream getOutputStream() {
223 return pw.getStream();
227 public void sendError(int sc) throws IOException {
234 public void sendError(int sc, String msg) throws IOException {
235 super.sendError(sc, msg);
236 pw.setError(sc, msg);
241 filterChain.doFilter(bufferedRequest, wrappedResp);
242 } catch (Exception e) {
243 log.error("Chain Exception", e);
247 byte[] bytes = baos.toByteArray();
248 StringBuilder responseHeaders = new StringBuilder("RESPONSE HEADERS|");
249 responseHeaders.append(formatResponseHeaders(response));
250 responseHeaders.append("Status:");
251 responseHeaders.append(response.getStatus());
252 responseHeaders.append(";IsCommited:" + wrappedResp.isCommitted());
254 log.info(responseHeaders.toString());
256 if ("gzip".equals(response.getHeader("Content-Encoding"))) {
257 log.info("UNGZIPED RESPONSE BODY|" + decompressGZIPByteArray(bytes));
259 log.info("RESPONSE BODY|" + new String(bytes));
262 if (pw.hasErrored()) {
263 log.info("ERROR RESPONSE|" + pw.getErrorCode() + ":" + pw.getErrorMsg());
265 if (!wrappedResp.isCommitted()) {
266 response.getOutputStream().write(bytes);
267 response.getOutputStream().flush();
270 } catch (Exception e) {
271 log.error("Exception in response filter", e);
277 public void destroy() {
278 // this method does nothing
281 private String decompressGZIPByteArray(byte[] bytes) {
282 BufferedReader in = null;
283 InputStreamReader inR = null;
284 ByteArrayInputStream byteS = null;
285 GZIPInputStream gzS = null;
286 StringBuilder str = new StringBuilder();
288 byteS = new ByteArrayInputStream(bytes);
289 gzS = new GZIPInputStream(byteS);
290 inR = new InputStreamReader(gzS);
291 in = new BufferedReader(inR);
295 while ((content = in.readLine()) != null) {
300 } catch (Exception e) {
301 log.error("Failed get read GZIPInputStream", e);
306 } catch (IOException e1) {
307 log.error("Failed to close ByteStream", e1);
312 } catch (IOException e2) {
313 log.error("Failed to close GZStream", e2);
318 } catch (IOException e3) {
319 log.error("Failed to close InputReader", e3);
324 } catch (IOException e) {
325 log.error("Failed to close BufferedReader", e);
328 return str.toString();