This repository was archived by the owner on Jun 21, 2023. It is now read-only.
forked from optimizely/javascript-sdk
-
Notifications
You must be signed in to change notification settings - Fork 7
Expand file tree
/
Copy pathlogger.ts
More file actions
320 lines (272 loc) · 7.32 KB
/
logger.ts
File metadata and controls
320 lines (272 loc) · 7.32 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
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
/**
* Copyright 2019, Optimizely
*
* 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.
*/
import { getErrorHandler } from './errorHandler'
import { isValidEnum, sprintf } from '@optimizely/js-sdk-utils'
import { LogLevel, LoggerFacade, LogManager, LogHandler } from './models'
const stringToLogLevel = {
NOTSET: 0,
DEBUG: 1,
INFO: 2,
WARNING: 3,
ERROR: 4,
}
function coerceLogLevel(level: any): LogLevel {
if (typeof level !== 'string') {
return level
}
level = level.toUpperCase()
if (level === 'WARN') {
level = 'WARNING'
}
if (!stringToLogLevel[level]) {
return level
}
return stringToLogLevel[level]
}
type LogData = {
message: string
splat: any[]
error?: Error
}
class DefaultLogManager implements LogManager {
private loggers: {
[name: string]: LoggerFacade
}
private defaultLoggerFacade = new OptimizelyLogger()
constructor() {
this.loggers = {}
}
getLogger(name?: string): LoggerFacade {
if (!name) {
return this.defaultLoggerFacade
}
if (!this.loggers[name]) {
this.loggers[name] = new OptimizelyLogger({ messagePrefix: name })
}
return this.loggers[name]
}
}
type ConsoleLogHandlerConfig = {
logLevel?: LogLevel | string
logToConsole?: boolean
prefix?: string
}
export class ConsoleLogHandler implements LogHandler {
public logLevel: LogLevel
private logToConsole: boolean
private prefix: string
/**
* Creates an instance of ConsoleLogger.
* @param {ConsoleLogHandlerConfig} config
* @memberof ConsoleLogger
*/
constructor(config: ConsoleLogHandlerConfig = {}) {
this.logLevel = LogLevel.NOTSET
if (config.logLevel !== undefined && isValidEnum(LogLevel, config.logLevel)) {
this.setLogLevel(config.logLevel)
}
this.logToConsole = config.logToConsole !== undefined ? !!config.logToConsole : true
this.prefix = config.prefix !== undefined ? config.prefix : '[OPTIMIZELY]'
}
/**
* @param {LogLevel} level
* @param {string} message
* @memberof ConsoleLogger
*/
log(level: LogLevel, message: string) {
if (!this.shouldLog(level) || !this.logToConsole) {
return
}
let logMessage: string = `${this.prefix} - ${this.getLogLevelName(
level,
)} ${this.getTime()} ${message}`
this.consoleLog(level, [logMessage])
}
/**
* @param {LogLevel} level
* @memberof ConsoleLogger
*/
setLogLevel(level: LogLevel | string) {
level = coerceLogLevel(level)
if (!isValidEnum(LogLevel, level) || level === undefined) {
this.logLevel = LogLevel.ERROR
} else {
this.logLevel = level
}
}
/**
* @returns {string}
* @memberof ConsoleLogger
*/
getTime(): string {
return new Date().toISOString()
}
/**
* @private
* @param {LogLevel} targetLogLevel
* @returns {boolean}
* @memberof ConsoleLogger
*/
private shouldLog(targetLogLevel: LogLevel): boolean {
return targetLogLevel >= this.logLevel
}
/**
* @private
* @param {LogLevel} logLevel
* @returns {string}
* @memberof ConsoleLogger
*/
private getLogLevelName(logLevel: LogLevel): string {
switch (logLevel) {
case LogLevel.DEBUG:
return 'DEBUG'
case LogLevel.INFO:
return 'INFO '
case LogLevel.WARNING:
return 'WARN '
case LogLevel.ERROR:
return 'ERROR'
default:
return 'NOTSET'
}
}
/**
* @private
* @param {LogLevel} logLevel
* @param {string[]} logArguments
* @memberof ConsoleLogger
*/
private consoleLog(logLevel: LogLevel, logArguments: [string, ...string[]]) {
switch (logLevel) {
case LogLevel.DEBUG:
console.log.apply(console, logArguments)
break
case LogLevel.INFO:
console.info.apply(console, logArguments)
break
case LogLevel.WARNING:
console.warn.apply(console, logArguments)
break
case LogLevel.ERROR:
console.error.apply(console, logArguments)
break
default:
console.log.apply(console, logArguments)
}
}
}
let globalLogLevel: LogLevel = LogLevel.NOTSET
let globalLogHandler: LogHandler | null = null
class OptimizelyLogger implements LoggerFacade {
private messagePrefix: string = ''
constructor(opts: { messagePrefix?: string } = {}) {
if (opts.messagePrefix) {
this.messagePrefix = opts.messagePrefix
}
}
/**
* @param {(LogLevel | LogInputObject)} levelOrObj
* @param {string} [message]
* @memberof OptimizelyLogger
*/
log(level: LogLevel | string, message: string): void {
this.internalLog(coerceLogLevel(level), {
message,
splat: [],
})
}
info(message: string | Error, ...splat: any[]): void {
this.namedLog(LogLevel.INFO, message, splat)
}
debug(message: string | Error, ...splat: any[]): void {
this.namedLog(LogLevel.DEBUG, message, splat)
}
warn(message: string | Error, ...splat: any[]): void {
this.namedLog(LogLevel.WARNING, message, splat)
}
error(message: string | Error, ...splat: any[]): void {
this.namedLog(LogLevel.ERROR, message, splat)
}
private format(data: LogData): string {
return `${this.messagePrefix ? this.messagePrefix + ': ' : ''}${sprintf(
data.message,
...data.splat,
)}`
}
private internalLog(level: LogLevel, data: LogData): void {
if (!globalLogHandler) {
return
}
if (level < globalLogLevel) {
return
}
globalLogHandler.log(level, this.format(data))
if (data.error && data.error instanceof Error) {
getErrorHandler().handleError(data.error)
}
}
private namedLog(level: LogLevel, message: string | Error, splat: any[]): void {
let error: Error | undefined
if (message instanceof Error) {
error = message
message = error.message
this.internalLog(level, {
error,
message,
splat,
})
return
}
if (splat.length === 0) {
this.internalLog(level, {
message,
splat,
})
return
}
const last = splat[splat.length - 1]
if (last instanceof Error) {
error = last
splat.splice(-1)
}
this.internalLog(level, { message, error, splat })
}
}
let globalLogManager: LogManager = new DefaultLogManager()
export function getLogger(name?: string): LoggerFacade {
return globalLogManager.getLogger(name)
}
export function setLogHandler(logger: LogHandler | null) {
globalLogHandler = logger
}
export function setLogLevel(level: LogLevel | string) {
level = coerceLogLevel(level)
if (!isValidEnum(LogLevel, level) || level === undefined) {
globalLogLevel = LogLevel.ERROR
} else {
globalLogLevel = level
}
}
export function getLogLevel(): LogLevel {
return globalLogLevel
}
/**
* Resets all global logger state to it's original
*/
export function resetLogger() {
globalLogManager = new DefaultLogManager()
globalLogLevel = LogLevel.NOTSET
}