60 lines
1.7 KiB
JavaScript
60 lines
1.7 KiB
JavaScript
import { accessSync, writeFileSync, createWriteStream, mkdirSync } from 'node:fs';
|
|
import { dirname as directoryname } from 'node:path';
|
|
export class FileLogger {
|
|
#filename;
|
|
#dirname;
|
|
writableStream;
|
|
constructor(filename) {
|
|
this.#dirname = directoryname(filename);
|
|
this.#filename = filename;
|
|
this.#_stat();
|
|
this.#_createWritableStream();
|
|
this.#_endStream();
|
|
}
|
|
#fsAccess(filename, mode) {
|
|
try {
|
|
accessSync(filename, mode);
|
|
return true;
|
|
}
|
|
catch (error) {
|
|
return false;
|
|
}
|
|
}
|
|
#_stat() {
|
|
//check if file exists
|
|
if (!this.#fsAccess(this.#filename)) {
|
|
// check if directory exists
|
|
if (!this.#fsAccess(this.#dirname)) {
|
|
// create the directory
|
|
mkdirSync(this.#dirname, { recursive: true });
|
|
}
|
|
// create the file and write an empty string to it
|
|
writeFileSync(this.#filename, '');
|
|
return;
|
|
}
|
|
}
|
|
#_createWritableStream() {
|
|
this.writableStream = createWriteStream(this.#filename, { flags: 'a' });
|
|
}
|
|
toFile(stringToLog) {
|
|
this.writableStream.write(stringToLog + '\n');
|
|
}
|
|
#_endStream() {
|
|
process.on('exit', () => {
|
|
this.writableStream.close();
|
|
});
|
|
process.on('SIGTERM', () => {
|
|
this.writableStream.close();
|
|
process.exit(0);
|
|
});
|
|
process.on('SIGINT', () => {
|
|
this.writableStream.close();
|
|
process.exit(0);
|
|
});
|
|
process.on('uncaughtException', () => {
|
|
this.writableStream.close();
|
|
process.exit(1);
|
|
});
|
|
}
|
|
}
|