deno.land / std@0.166.0 / log / logger.ts

نووسراو ببینە
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
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.import { getLevelByName, getLevelName, LogLevels } from "./levels.ts";import type { LevelName } from "./levels.ts";import type { BaseHandler } from "./handlers.ts";
// deno-lint-ignore no-explicit-anyexport type GenericFunction = (...args: any[]) => any;
export interface LogRecordOptions { msg: string; args: unknown[]; level: number; loggerName: string;}
export class LogRecord { readonly msg: string; #args: unknown[]; #datetime: Date; readonly level: number; readonly levelName: string; readonly loggerName: string;
constructor(options: LogRecordOptions) { this.msg = options.msg; this.#args = [...options.args]; this.level = options.level; this.loggerName = options.loggerName; this.#datetime = new Date(); this.levelName = getLevelName(options.level); } get args(): unknown[] { return [...this.#args]; } get datetime(): Date { return new Date(this.#datetime.getTime()); }}
export interface LoggerOptions { handlers?: BaseHandler[];}
export class Logger { #level: LogLevels; #handlers: BaseHandler[]; readonly #loggerName: string;
constructor( loggerName: string, levelName: LevelName, options: LoggerOptions = {}, ) { this.#loggerName = loggerName; this.#level = getLevelByName(levelName); this.#handlers = options.handlers || []; }
get level(): LogLevels { return this.#level; } set level(level: LogLevels) { this.#level = level; }
get levelName(): LevelName { return getLevelName(this.#level); } set levelName(levelName: LevelName) { this.#level = getLevelByName(levelName); }
get loggerName(): string { return this.#loggerName; }
set handlers(hndls: BaseHandler[]) { this.#handlers = hndls; } get handlers(): BaseHandler[] { return this.#handlers; }
/** If the level of the logger is greater than the level to log, then nothing * is logged, otherwise a log record is passed to each log handler. `msg` data * passed in is returned. If a function is passed in, it is only evaluated * if the msg will be logged and the return value will be the result of the * function, not the function itself, unless the function isn't called, in which * case undefined is returned. All types are coerced to strings for logging. */ #_log<T>( level: number, msg: (T extends GenericFunction ? never : T) | (() => T), ...args: unknown[] ): T | undefined { if (this.level > level) { return msg instanceof Function ? undefined : msg; }
let fnResult: T | undefined; let logMessage: string; if (msg instanceof Function) { fnResult = msg(); logMessage = this.asString(fnResult); } else { logMessage = this.asString(msg); } const record: LogRecord = new LogRecord({ msg: logMessage, args: args, level: level, loggerName: this.loggerName, });
this.#handlers.forEach((handler) => { handler.handle(record); });
return msg instanceof Function ? fnResult : msg; }
asString(data: unknown): string { if (typeof data === "string") { return data; } else if ( data === null || typeof data === "number" || typeof data === "bigint" || typeof data === "boolean" || typeof data === "undefined" || typeof data === "symbol" ) { return String(data); } else if (data instanceof Error) { return data.stack!; } else if (typeof data === "object") { return JSON.stringify(data); } return "undefined"; }
debug<T>(msg: () => T, ...args: unknown[]): T | undefined; debug<T>(msg: T extends GenericFunction ? never : T, ...args: unknown[]): T; debug<T>( msg: (T extends GenericFunction ? never : T) | (() => T), ...args: unknown[] ): T | undefined { return this.#_log(LogLevels.DEBUG, msg, ...args); }
info<T>(msg: () => T, ...args: unknown[]): T | undefined; info<T>(msg: T extends GenericFunction ? never : T, ...args: unknown[]): T; info<T>( msg: (T extends GenericFunction ? never : T) | (() => T), ...args: unknown[] ): T | undefined { return this.#_log(LogLevels.INFO, msg, ...args); }
warning<T>(msg: () => T, ...args: unknown[]): T | undefined; warning<T>(msg: T extends GenericFunction ? never : T, ...args: unknown[]): T; warning<T>( msg: (T extends GenericFunction ? never : T) | (() => T), ...args: unknown[] ): T | undefined { return this.#_log(LogLevels.WARNING, msg, ...args); }
error<T>(msg: () => T, ...args: unknown[]): T | undefined; error<T>(msg: T extends GenericFunction ? never : T, ...args: unknown[]): T; error<T>( msg: (T extends GenericFunction ? never : T) | (() => T), ...args: unknown[] ): T | undefined { return this.#_log(LogLevels.ERROR, msg, ...args); }
critical<T>(msg: () => T, ...args: unknown[]): T | undefined; critical<T>( msg: T extends GenericFunction ? never : T, ...args: unknown[] ): T; critical<T>( msg: (T extends GenericFunction ? never : T) | (() => T), ...args: unknown[] ): T | undefined { return this.#_log(LogLevels.CRITICAL, msg, ...args); }}
std
Deno standard library
GitHub Repositorydenoland/deno_std
GitHub Stars
2448

Version Info

Tagged at
2 months ago