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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { LogLevel, getLevelByName, getLevelName } from "./levels.ts";
import { BaseHandler } from "./handlers.ts";
export interface LogRecord {
msg: string;
args: unknown[];
datetime: Date;
level: number;
levelName: string;
}
export class Logger {
level: number;
levelName: string;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
handlers: any[];
constructor(levelName: string, handlers?: BaseHandler[]) {
this.level = getLevelByName(levelName);
this.levelName = levelName;
this.handlers = handlers || [];
}
_log(level: number, msg: string, ...args: unknown[]): void {
if (this.level > level) return;
// TODO: it'd be a good idea to make it immutable, so
// no handler mangles it by mistake
// TODO: iterpolate msg with values
const record: LogRecord = {
msg: msg,
args: args,
datetime: new Date(),
level: level,
levelName: getLevelName(level)
};
this.handlers.forEach((handler): void => {
handler.handle(record);
});
}
debug(msg: string, ...args: unknown[]): void {
this._log(LogLevel.DEBUG, msg, ...args);
}
info(msg: string, ...args: unknown[]): void {
this._log(LogLevel.INFO, msg, ...args);
}
warning(msg: string, ...args: unknown[]): void {
this._log(LogLevel.WARNING, msg, ...args);
}
error(msg: string, ...args: unknown[]): void {
this._log(LogLevel.ERROR, msg, ...args);
}
critical(msg: string, ...args: unknown[]): void {
this._log(LogLevel.CRITICAL, msg, ...args);
}
}
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