Method _load

lib/tokens.js:47–85

()

	}

	_load() {
		if(this._loading) return this._loading;

		return this._loading = new Promise((resolve, reject) => {
			debug('Loading token storage from', this._file);
			fs.stat(this._file, (err, stat) => {
				if(err) {
					delete this._loading;
					if(err.code === 'ENOENT') {
						debug('Token storage does not exist');
						this._lastSync = Date.now();
						resolve(this._data);
					} else {
						reject(err);
					}

					return;
				}

				if(! stat.isFile()) {
					// tokens.json does not exist
					delete this._loading;
					reject(new Error('tokens.json exists but is not a file'));
				} else if(Date.now() - this._lastSync > MAX_STALE_TIME || stat.mtime.getTime() > this._lastSync) {
					debug('Loading tokens');
					fs.readFile(this._file, (err, result) =>  {
						this._data = JSON.parse(result.toString());
						this._lastSync = Date.now();
						delete this._loading;
						resolve(this._data);
					});
				} else {
					delete this._loading;
					this._lastSync = Date.now();
					resolve(this._data);
				}
			});
		});
	}

	update(deviceId, token) {
		return this._load()