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51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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// Simple node to introduce a pause into a flow
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// Require main module
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var RED = require("../../red/red");
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// main node definition
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function RateLimitNode(n) {
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RED.nodes.createNode(this,n);
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this.buffer = [];
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this.timeout = 1000/n.rate;
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this.name = n.name
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var node= this
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this.intervalID = setInterval(function() {
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if (node.buffer.length > 0) {
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node.send(node.buffer.shift());
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}
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},this.timeout);
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this.on("input", function(msg) {
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this.buffer.push(msg);
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});
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}
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// register node
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RED.nodes.registerType("rateLimit",RateLimitNode);
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RateLimitNode.prototype.close = function() {
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clearInterval(this.intervalID);
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this.buffer = [];
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}
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