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
|
/*
This file is part of TALER
(C) 2019 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Check if we are running under nodejs.
*/
const isNode =
typeof process !== "undefined" &&
typeof process.release !== "undefined" &&
process.release.name === "node";
export enum LogLevel {
Trace = "trace",
Message = "message",
Info = "info",
Warn = "warn",
Error = "error",
None = "none",
}
let globalLogLevel = LogLevel.Info;
const byTagLogLevel: Record<string, LogLevel> = {};
export function getGlobalLogLevel(): string {
return globalLogLevel;
}
export function setGlobalLogLevelFromString(logLevelStr: string): void {
globalLogLevel = getLevelForString(logLevelStr);
}
export function setLogLevelFromString(tag: string, logLevelStr: string): void {
byTagLogLevel[tag] = getLevelForString(logLevelStr);
}
function getLevelForString(logLevelStr: string): LogLevel {
switch (logLevelStr.toLowerCase()) {
case "trace":
return LogLevel.Trace;
case "info":
return LogLevel.Info;
case "warn":
case "warning":
return LogLevel.Warn;
case "error":
return LogLevel.Error;
case "none":
return LogLevel.None;
default:
if (isNode) {
process.stderr.write(`Invalid log level, defaulting to WARNING\n`);
} else {
console.warn(`Invalid log level, defaulting to WARNING`);
}
return LogLevel.Warn;
}
}
function writeNodeLog(
message: any,
tag: string,
level: string,
args: any[],
): void {
try {
let msg = `${new Date().toISOString()} ${tag} ${level} ${message}`;
if (args.length != 0) {
msg += ` ${JSON.stringify(args, undefined, 2)}\n`;
} else {
msg += `\n`;
}
process.stderr.write(msg);
} catch (e) {
// This can happen when we're trying to log something that doesn't want to be
// converted to a string.
let msg = `${new Date().toISOString()} (logger) FATAL `;
if (e instanceof Error) {
msg += `failed to write log: ${e.message}\n`;
} else {
msg += "failed to write log\n";
}
process.stderr.write(msg);
}
}
/**
* Logger that writes to stderr when running under node,
* and uses the corresponding console.* method to log in the browser.
*/
export class Logger {
constructor(private tag: string) { }
shouldLogTrace(): boolean {
const level = byTagLogLevel[this.tag] ?? globalLogLevel;
switch (level) {
case LogLevel.Trace:
return true;
case LogLevel.Message:
case LogLevel.Info:
case LogLevel.Warn:
case LogLevel.Error:
case LogLevel.None:
return false;
}
}
shouldLogInfo(): boolean {
const level = byTagLogLevel[this.tag] ?? globalLogLevel;
switch (level) {
case LogLevel.Trace:
case LogLevel.Message:
case LogLevel.Info:
return true;
case LogLevel.Warn:
case LogLevel.Error:
case LogLevel.None:
return false;
}
}
shouldLogWarn(): boolean {
const level = byTagLogLevel[this.tag] ?? globalLogLevel;
switch (level) {
case LogLevel.Trace:
case LogLevel.Message:
case LogLevel.Info:
case LogLevel.Warn:
return true;
case LogLevel.Error:
case LogLevel.None:
return false;
}
}
shouldLogError(): boolean {
const level = byTagLogLevel[this.tag] ?? globalLogLevel;
switch (level) {
case LogLevel.Trace:
case LogLevel.Message:
case LogLevel.Info:
case LogLevel.Warn:
case LogLevel.Error:
return true;
case LogLevel.None:
return false;
}
}
info(message: string, ...args: any[]): void {
if (!this.shouldLogInfo()) {
return;
}
if (isNode) {
writeNodeLog(message, this.tag, "INFO", args);
} else {
console.info(
`${new Date().toISOString()} ${this.tag} INFO ` + message,
...args,
);
}
}
warn(message: string, ...args: any[]): void {
if (!this.shouldLogWarn()) {
return;
}
if (isNode) {
writeNodeLog(message, this.tag, "WARN", args);
} else {
console.warn(
`${new Date().toISOString()} ${this.tag} INFO ` + message,
...args,
);
}
}
error(message: string, ...args: any[]): void {
if (!this.shouldLogError()) {
return;
}
if (isNode) {
writeNodeLog(message, this.tag, "ERROR", args);
} else {
console.info(
`${new Date().toISOString()} ${this.tag} ERROR ` + message,
...args,
);
}
}
trace(message: string, ...args: any[]): void {
if (!this.shouldLogTrace()) {
return;
}
if (isNode) {
writeNodeLog(message, this.tag, "TRACE", args);
} else {
console.info(
`${new Date().toISOString()} ${this.tag} TRACE ` + message,
...args,
);
}
}
reportBreak(): void {
if (!this.shouldLogError()) {
return;
}
const location = new Error("programming error");
this.error(`assertion failed: ${location.stack}`);
}
}
|
