Repository navigation
Expand file tree
/
Copy pathLogger.java
More file actions
233 lines (209 loc) · 8.01 KB
/
Copy pathLogger.java
File metadata and controls
233 lines (209 loc) · 8.01 KB
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
/**
* Copyright 2012-2018 The Feign Authors
*
* 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 feign;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.logging.FileHandler;
import java.util.logging.LogRecord;
import java.util.logging.SimpleFormatter;
import static feign.Util.UTF_8;
import static feign.Util.decodeOrDefault;
import static feign.Util.valuesOrEmpty;
/**
* Simple logging abstraction for debug messages. Adapted from {@code retrofit.RestAdapter.Log}.
*/
public abstract class Logger {
protected static String methodTag(String configKey) {
return new StringBuilder().append('[').append(configKey.substring(0, configKey.indexOf('(')))
.append("] ").toString();
}
/**
* Override to log requests and responses using your own implementation. Messages will be http
* request and response text.
*
* @param configKey value of {@link Feign#configKey(Class, java.lang.reflect.Method)}
* @param format {@link java.util.Formatter format string}
* @param args arguments applied to {@code format}
*/
protected abstract void log(String configKey, String format, Object... args);
protected void logRequest(String configKey, Level logLevel, Request request) {
log(configKey, "---> %s %s HTTP/1.1", request.httpMethod().name(), request.url());
if (logLevel.ordinal() >= Level.HEADERS.ordinal()) {
for (String field : request.headers().keySet()) {
for (String value : valuesOrEmpty(request.headers(), field)) {
log(configKey, "%s: %s", field, value);
}
}
int bodyLength = 0;
if (request.body() != null) {
bodyLength = request.body().length;
if (logLevel.ordinal() >= Level.FULL.ordinal()) {
String bodyText =
request.charset() != null ? new String(request.body(), request.charset()) : null;
log(configKey, ""); // CRLF
log(configKey, "%s", bodyText != null ? bodyText : "Binary data");
}
}
log(configKey, "---> END HTTP (%s-byte body)", bodyLength);
}
}
protected void logRetry(String configKey, Level logLevel) {
log(configKey, "---> RETRYING");
}
protected Response logAndRebufferResponse(String configKey,
Level logLevel,
Response response,
long elapsedTime)
throws IOException {
String reason =
response.reason() != null && logLevel.compareTo(Level.NONE) > 0 ? " " + response.reason()
: "";
int status = response.status();
log(configKey, "<--- HTTP/1.1 %s%s (%sms)", status, reason, elapsedTime);
if (logLevel.ordinal() >= Level.HEADERS.ordinal()) {
for (String field : response.headers().keySet()) {
for (String value : valuesOrEmpty(response.headers(), field)) {
log(configKey, "%s: %s", field, value);
}
}
int bodyLength = 0;
if (response.body() != null && !(status == 204 || status == 205)) {
// HTTP 204 No Content "...response MUST NOT include a message-body"
// HTTP 205 Reset Content "...response MUST NOT include an entity"
if (logLevel.ordinal() >= Level.FULL.ordinal()) {
log(configKey, ""); // CRLF
}
byte[] bodyData = Util.toByteArray(response.body().asInputStream());
bodyLength = bodyData.length;
if (logLevel.ordinal() >= Level.FULL.ordinal() && bodyLength > 0) {
log(configKey, "%s", decodeOrDefault(bodyData, UTF_8, "Binary data"));
}
log(configKey, "<--- END HTTP (%s-byte body)", bodyLength);
return response.toBuilder().body(bodyData).build();
} else {
log(configKey, "<--- END HTTP (%s-byte body)", bodyLength);
}
}
return response;
}
protected IOException logIOException(String configKey,
Level logLevel,
IOException ioe,
long elapsedTime) {
log(configKey, "<--- ERROR %s: %s (%sms)", ioe.getClass().getSimpleName(), ioe.getMessage(),
elapsedTime);
if (logLevel.ordinal() >= Level.FULL.ordinal()) {
StringWriter sw = new StringWriter();
ioe.printStackTrace(new PrintWriter(sw));
log(configKey, "%s", sw.toString());
log(configKey, "<--- END ERROR");
}
return ioe;
}
/**
* Controls the level of logging.
*/
public enum Level {
/**
* No logging.
*/
NONE,
/**
* Log only the request method and URL and the response status code and execution time.
*/
BASIC,
/**
* Log the basic information along with request and response headers.
*/
HEADERS,
/**
* Log the headers, body, and metadata for both requests and responses.
*/
FULL
}
/**
* Logs to System.err.
*/
public static class ErrorLogger extends Logger {
@Override
protected void log(String configKey, String format, Object... args) {
System.err.printf(methodTag(configKey) + format + "%n", args);
}
}
/**
* Logs to the category {@link Logger} at {@link java.util.logging.Level#FINE}, if loggable.
*/
public static class JavaLogger extends Logger {
final java.util.logging.Logger logger =
java.util.logging.Logger.getLogger(Logger.class.getName());
@Override
protected void logRequest(String configKey, Level logLevel, Request request) {
if (logger.isLoggable(java.util.logging.Level.FINE)) {
super.logRequest(configKey, logLevel, request);
}
}
@Override
protected Response logAndRebufferResponse(String configKey,
Level logLevel,
Response response,
long elapsedTime)
throws IOException {
if (logger.isLoggable(java.util.logging.Level.FINE)) {
return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
}
return response;
}
@Override
protected void log(String configKey, String format, Object... args) {
if (logger.isLoggable(java.util.logging.Level.FINE)) {
logger.fine(String.format(methodTag(configKey) + format, args));
}
}
/**
* Helper that configures java.util.logging to sanely log messages at FINE level without
* additional formatting.
*/
public JavaLogger appendToFile(String logfile) {
logger.setLevel(java.util.logging.Level.FINE);
try {
FileHandler handler = new FileHandler(logfile, true);
handler.setFormatter(new SimpleFormatter() {
@Override
public String format(LogRecord record) {
return String.format("%s%n", record.getMessage()); // NOPMD
}
});
logger.addHandler(handler);
} catch (IOException e) {
throw new IllegalStateException("Could not add file handler.", e);
}
return this;
}
}
public static class NoOpLogger extends Logger {
@Override
protected void logRequest(String configKey, Level logLevel, Request request) {}
@Override
protected Response logAndRebufferResponse(String configKey,
Level logLevel,
Response response,
long elapsedTime)
throws IOException {
return response;
}
@Override
protected void log(String configKey, String format, Object... args) {}
}
}