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diff --git a/nodes/core/89-delay.js b/nodes/core/89-delay.js
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+/**
+ * Copyright 2013 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+// Simple node to introduce a pause into a flow
+
+// Require main module
+var RED = require("../../red/red");
+
+// main node definition
+function DelayNode(n) {
+ RED.nodes.createNode(this,n);
+
+ this.pauseType = n.pauseType;
+ this.timeoutUnits = n.timeoutUnits;
+ this.rateUnits = n.rateUnits;
+
+ if (n.timeoutUnits == "milliseconds") {
+ this.timeout = n.timout;
+ } else if (n.timeoutUnits == "seconds") {
+ this.timeout = n.timeout * 1000;
+ } else if (n.timeoutUnits == "minutes") {
+ this.timeout = n.timeout * (60 * 1000);
+ } else if (n.timeoutUnits == "hours") {
+ this.timeout = n.timeout * (60 * 60 * 1000);
+ } else if (n.timeoutUnits == "days") {
+ this.timeout = n.timeout * (24 * 60 * 60 * 1000);
+ }
+
+ if (n.rateUnits == "second") {
+ this.rate = 1000/n.rate;
+ } else if (n.rateUnits == "minute") {
+ this.rate = (60 * 1000)/n.rate;
+ } else if (n.rateUnits == "hour") {
+ this.rate = (60 * 60 * 1000)/n.rate;
+ } else if (n.rateUnits == "day") {
+ this.rate = (24 * 60 * 60 * 1000)/n.rate;
+ }
+
+ this.name = n.name;
+ this.idList = [];
+ this.buffer = [];
+ this.intervalID = -1;
+ var node= this;
+
+ if (this.pauseType == "delay") {
+ this.on("input", function(msg) {
+ var node= this;
+ var id;
+ id = setTimeout(function(){
+ node.idList.splice(node.idList.indexOf(id),1);
+ node.send(msg);
+ }, node.timeout);
+ this.idList.push(id);
+ });
+
+ this.on("close", function() {
+ for (var i=0; i 1000) {
+ node.warn(this.name + " buffer exceeded 1000 messages");
+ }
+ } else {
+ node.send(msg);
+ node.intervalID = setInterval(function() {
+ if (node.buffer.length == 0) {
+ clearInterval(node.intervalID);
+ node.intervalID = -1;
+ }
+
+ if (node.buffer.length > 0) {
+ node.send(node.buffer.shift());
+ }
+ },node.rate);
+ }
+ });
+
+ this.on("close", function() {
+ clearInterval(this.intervalID);
+ this.buffer = [];
+ });
+ }
+}
+
+
+
+// register node
+RED.nodes.registerType("delay",DelayNode);
+