mirror of
https://github.com/denoland/deno.git
synced 2024-12-25 08:39:09 -05:00
f626b04ebe
Original: c5e6e015b5
62 lines
1.3 KiB
TypeScript
62 lines
1.3 KiB
TypeScript
import { open, File, Writer } from "deno";
|
|
import { getLevelByName } from "./levels.ts";
|
|
import { LogRecord } from "./logger.ts";
|
|
|
|
export class BaseHandler {
|
|
level: number;
|
|
levelName: string;
|
|
|
|
constructor(levelName: string) {
|
|
this.level = getLevelByName(levelName);
|
|
this.levelName = levelName;
|
|
}
|
|
|
|
handle(logRecord: LogRecord) {
|
|
if (this.level > logRecord.level) return;
|
|
|
|
// TODO: implement formatter
|
|
const msg = `${logRecord.levelName} ${logRecord.msg}`;
|
|
|
|
return this.log(msg);
|
|
}
|
|
|
|
log(msg: string) {}
|
|
async setup() {}
|
|
async destroy() {}
|
|
}
|
|
|
|
export class ConsoleHandler extends BaseHandler {
|
|
log(msg: string) {
|
|
console.log(msg);
|
|
}
|
|
}
|
|
|
|
export abstract class WriterHandler extends BaseHandler {
|
|
protected _writer: Writer;
|
|
|
|
log(msg: string) {
|
|
const encoder = new TextEncoder();
|
|
// promise is intentionally not awaited
|
|
this._writer.write(encoder.encode(msg + "\n"));
|
|
}
|
|
}
|
|
|
|
export class FileHandler extends WriterHandler {
|
|
private _file: File;
|
|
private _filename: string;
|
|
|
|
constructor(levelName: string, filename: string) {
|
|
super(levelName);
|
|
this._filename = filename;
|
|
}
|
|
|
|
async setup() {
|
|
// open file in append mode - write only
|
|
this._file = await open(this._filename, "a");
|
|
this._writer = this._file;
|
|
}
|
|
|
|
async destroy() {
|
|
await this._file.close();
|
|
}
|
|
}
|