41 lines
1.0 KiB
JavaScript
41 lines
1.0 KiB
JavaScript
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var RateLimit = function(interval_ms) {
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this._interval_ms = interval_ms || 0; // (0 means no limit)
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this._after = 0;
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};
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RateLimit.prototype.attempt = function(time) {
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var time = time || Date.now();
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if(time < this._after) return false;
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this._after = time + this._interval_ms;
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return true;
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};
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RateLimit.prototype.setInterval = function(interval_ms) {
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this._after += interval_ms - this._interval_ms;
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this._interval_ms = interval_ms;
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};
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var RateLimitChain = function(num, interval_ms) {
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this.setNumAndInterval(num, interval_ms);
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};
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RateLimitChain.prototype.attempt = function(time) {
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var time = time || Date.now();
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for(var i = 0; i < this._chain.length; i++) {
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if(this._chain[i].attempt(time)) return true;
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}
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return false;
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};
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RateLimitChain.prototype.setNumAndInterval = function(num, interval_ms) {
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this._chain = [];
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for(var i = 0; i < num; i++) {
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this._chain.push(new RateLimit(interval_ms));
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}
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};
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var exports = typeof module !== "undefined" ? module.exports : this;
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exports.RateLimit = RateLimit;
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exports.RateLimitChain = RateLimitChain;
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