2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2019 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
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.logging.filter.base;
23 import java.io.BufferedInputStream;
24 import java.io.ByteArrayOutputStream;
25 import java.io.FilterOutputStream;
26 import java.io.IOException;
27 import java.io.InputStream;
28 import java.io.OutputStream;
29 import java.nio.charset.Charset;
30 import java.nio.charset.StandardCharsets;
31 import javax.ws.rs.WebApplicationException;
32 import javax.ws.rs.client.ClientRequestContext;
33 import javax.ws.rs.client.ClientRequestFilter;
34 import javax.ws.rs.client.ClientResponseContext;
35 import javax.ws.rs.client.ClientResponseFilter;
36 import javax.ws.rs.core.HttpHeaders;
37 import javax.ws.rs.core.MultivaluedHashMap;
38 import javax.ws.rs.core.MultivaluedMap;
39 import javax.ws.rs.ext.WriterInterceptor;
40 import javax.ws.rs.ext.WriterInterceptorContext;
41 import org.slf4j.Logger;
42 import org.slf4j.LoggerFactory;
44 public class PayloadLoggingClientFilter implements ClientRequestFilter, ClientResponseFilter, WriterInterceptor {
46 private static final Logger logger = LoggerFactory.getLogger(PayloadLoggingClientFilter.class);
47 private static final String ENTITY_STREAM_PROPERTY = "LoggingFilter.entityStream";
48 private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
49 private final int maxEntitySize;
51 public PayloadLoggingClientFilter() {
52 maxEntitySize = 1024 * 1024;
55 public PayloadLoggingClientFilter(int maxPayloadSize) {
56 this.maxEntitySize = Integer.min(maxPayloadSize, 1024 * 1024);
59 private void log(StringBuilder sb) {
60 logger.debug(sb.toString());
63 protected InputStream logInboundEntity(final StringBuilder b, InputStream stream, final Charset charset)
65 if (!stream.markSupported()) {
66 stream = new BufferedInputStream(stream);
68 stream.mark(maxEntitySize + 1);
69 final byte[] entity = new byte[maxEntitySize + 1];
70 final int entitySize = stream.read(entity);
71 if (entitySize != -1) {
72 b.append(new String(entity, 0, Math.min(entitySize, maxEntitySize), charset));
74 if (entitySize > maxEntitySize) {
75 b.append("...more...");
83 public void filter(ClientRequestContext requestContext) throws IOException {
84 if (requestContext.hasEntity()) {
85 final OutputStream stream = new LoggingStream(requestContext.getEntityStream());
86 requestContext.setEntityStream(stream);
87 requestContext.setProperty(ENTITY_STREAM_PROPERTY, stream);
89 String method = formatMethod(requestContext);
90 log(new StringBuilder("Making " + method + " request to: " + requestContext.getUri() + "\nRequest Headers: "
91 + getHeaders(requestContext.getHeaders())));
95 protected String getHeaders(MultivaluedMap<String, Object> headers) {
96 MultivaluedMap<String, Object> printHeaders = new MultivaluedHashMap<>();
97 for (String header : headers.keySet()) {
98 if (!header.equals(HttpHeaders.AUTHORIZATION)) {
99 printHeaders.add(header, headers.getFirst(header));
102 return printHeaders.toString();
106 public void filter(ClientRequestContext requestContext, ClientResponseContext responseContext) throws IOException {
107 final StringBuilder sb = new StringBuilder();
108 if (responseContext.hasEntity()) {
109 responseContext.setEntityStream(logInboundEntity(sb, responseContext.getEntityStream(), DEFAULT_CHARSET));
110 String method = formatMethod(requestContext);
111 log(sb.insert(0, "Response from " + method + ": " + requestContext.getUri() + "\nResponse Headers: "
112 + responseContext.getHeaders().toString()));
117 public void aroundWriteTo(WriterInterceptorContext context) throws IOException, WebApplicationException {
118 final LoggingStream stream = (LoggingStream) context.getProperty(ENTITY_STREAM_PROPERTY);
120 if (stream != null) {
121 log(stream.getStringBuilder(DEFAULT_CHARSET));
125 private class LoggingStream extends FilterOutputStream {
127 private final StringBuilder sb = new StringBuilder();
128 private final ByteArrayOutputStream baos = new ByteArrayOutputStream();
130 LoggingStream(OutputStream out) {
134 StringBuilder getStringBuilder(Charset charset) {
135 // write entity to the builder
136 final byte[] entity = baos.toByteArray();
138 sb.append(new String(entity, 0, entity.length, charset));
139 if (entity.length > maxEntitySize) {
140 sb.append("...more...");
148 public void write(final int i) throws IOException {
149 if (baos.size() <= maxEntitySize) {
156 protected String formatMethod(ClientRequestContext requestContext) {
157 String httpMethodOverride = requestContext.getHeaderString("X-HTTP-Method-Override");
158 if (httpMethodOverride == null) {
159 return requestContext.getMethod();
161 return requestContext.getMethod() + " (overridden to " + httpMethodOverride + ")";