1 | 'use strict';
|
2 |
|
3 | Object.defineProperty(exports, "__esModule", {
|
4 | value: true
|
5 | });
|
6 | exports.bufferShiftEvent = exports.default = undefined;
|
7 |
|
8 | var _getPrototypeOf = require('babel-runtime/core-js/object/get-prototype-of');
|
9 |
|
10 | var _getPrototypeOf2 = _interopRequireDefault(_getPrototypeOf);
|
11 |
|
12 | var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');
|
13 |
|
14 | var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);
|
15 |
|
16 | var _createClass2 = require('babel-runtime/helpers/createClass');
|
17 |
|
18 | var _createClass3 = _interopRequireDefault(_createClass2);
|
19 |
|
20 | var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn');
|
21 |
|
22 | var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);
|
23 |
|
24 | var _inherits2 = require('babel-runtime/helpers/inherits');
|
25 |
|
26 | var _inherits3 = _interopRequireDefault(_inherits2);
|
27 |
|
28 | var _events = require('events');
|
29 |
|
30 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
31 |
|
32 | var RingBuffer = function (_EventEmitter) {
|
33 | (0, _inherits3.default)(RingBuffer, _EventEmitter);
|
34 |
|
35 | function RingBuffer(limit) {
|
36 | (0, _classCallCheck3.default)(this, RingBuffer);
|
37 |
|
38 | var _this = (0, _possibleConstructorReturn3.default)(this, (RingBuffer.__proto__ || (0, _getPrototypeOf2.default)(RingBuffer)).call(this));
|
39 |
|
40 | _this.records = [];
|
41 | _this.limit = limit;
|
42 | _this.bufferWasFull = false;
|
43 | return _this;
|
44 | }
|
45 |
|
46 | (0, _createClass3.default)(RingBuffer, [{
|
47 | key: 'write',
|
48 | value: function write(log) {
|
49 | this.records.push(log);
|
50 | if (this.records.length > this.limit) {
|
51 | this.records.shift();
|
52 |
|
53 | if (!this.bufferWasFull) {
|
54 | this.emit('buffer shift');
|
55 | this.bufferWasFull = true;
|
56 | }
|
57 | return false;
|
58 | }
|
59 | return true;
|
60 | }
|
61 | }, {
|
62 | key: 'read',
|
63 | value: function read() {
|
64 | this.bufferWasFull = false;
|
65 | return this.records.shift();
|
66 | }
|
67 | }, {
|
68 | key: 'isEmpty',
|
69 | value: function isEmpty() {
|
70 | return this.records.length === 0;
|
71 | }
|
72 | }]);
|
73 | return RingBuffer;
|
74 | }(_events.EventEmitter);
|
75 |
|
76 | var bufferShiftEvent = 'buffer shift';
|
77 |
|
78 | exports.default = RingBuffer;
|
79 | exports.bufferShiftEvent = bufferShiftEvent;
|
80 | module.exports = exports['default'];
|
81 |
|