mirror of
https://github.com/node-red/node-red.git
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94 lines
2.6 KiB
JavaScript
94 lines
2.6 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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var RED = require(process.env.NODE_RED_HOME+"/red/red");
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try {
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var cron = require("cron");
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} catch(err) {
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require("util").log("[inject] Warning: cannot find module 'cron'");
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}
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function InjectNode(n) {
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RED.nodes.createNode(this,n);
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this.topic = n.topic;
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this.payload = n.payload;
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this.repeat = n.repeat;
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this.crontab = n.crontab;
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this.once = n.once;
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var node = this;
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this.interval_id = null;
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this.cronjob = null;
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if (this.repeat && !isNaN(this.repeat) && this.repeat > 0) {
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this.repeat = this.repeat * 1000;
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this.log("repeat = "+this.repeat);
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this.interval_id = setInterval( function() {
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node.emit("input",{});
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}, this.repeat );
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} else if (this.crontab) {
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if (cron) {
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this.log("crontab = "+this.crontab);
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this.cronjob = new cron.CronJob(this.crontab,
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function() {
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node.emit("input",{});
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},
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null,true);
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} else {
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this.error("'cron' module not found");
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}
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}
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if (this.once) {
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setTimeout( function(){ node.emit("input",{}); }, 50);
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}
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this.on("input",function(msg) {
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var msg = {topic:this.topic,payload:this.payload};
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if (msg.payload == "") { msg.payload = Date.now(); }
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this.send(msg);
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msg = null;
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});
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}
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RED.nodes.registerType("inject",InjectNode);
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InjectNode.prototype.close = function() {
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if (this.interval_id != null) {
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clearInterval(this.interval_id);
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this.log("inject: repeat stopped");
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} else if (this.cronjob != null) {
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this.cronjob.stop();
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this.log("inject: cronjob stopped");
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delete this.cronjob;
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}
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}
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RED.app.post("/inject/:id", function(req,res) {
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var node = RED.nodes.getNode(req.params.id);
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if (node != null) {
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try {
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node.receive();
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res.send(200);
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} catch(err) {
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res.send(500);
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node.error("Inject failed:"+err);
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console.log(err.stack);
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}
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} else {
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res.send(404);
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}
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});
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