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node-red-nodes/social/feedparser/32-feedparse.js
2022-06-02 17:35:09 +01:00

76 lines
3.1 KiB
JavaScript

module.exports = function(RED) {
"use strict";
var FeedParser = require("feedparser");
var request = require("request");
var url = require('url');
function FeedParseNode(n) {
RED.nodes.createNode(this,n);
this.url = n.url;
if (n.interval > 35790) { this.warn(RED._("feedparse.errors.invalidinterval")) }
this.interval = (parseInt(n.interval)||15) * 60000;
this.interval_id = null;
this.ignorefirst = n.ignorefirst || false;
this.seen = {};
this.donefirst = false;
var node = this;
var parsedUrl = url.parse(this.url);
if (!(parsedUrl.host || (parsedUrl.hostname && parsedUrl.port)) && !parsedUrl.isUnix) {
node.error(RED._("feedparse.errors.invalidurl"),RED._("feedparse.errors.invalidurl"));
}
else {
var getFeed = function() {
var req = request(node.url, {timeout:10000, pool:false});
//req.setMaxListeners(50);
req.setHeader('user-agent', 'Mozilla/5.0 (Node-RED)');
req.setHeader('accept', 'application/rss+xml,text/html,application/xhtml+xml,application/xml');
var feedparser = new FeedParser();
req.on('error', function(err) { node.error(err); });
req.on('response', function(res) {
if (res.statusCode != 200) { node.warn(RED._("feedparse.errors.badstatuscode")+" "+res.statusCode); }
else { res.pipe(feedparser); }
});
feedparser.on('error', function(error) { node.error(error,error); });
feedparser.on('readable', function () {
var stream = this, article;
while (article = stream.read()) { // jshint ignore:line
if (!(article.guid in node.seen) || ( node.seen[article.guid] !== 0 && node.seen[article.guid] != article.date.getTime())) {
node.seen[article.guid] = article.date ? article.date.getTime() : 0;
var msg = {
topic: article.origlink || article.link,
payload: article.description,
article: article
};
if (node.ignorefirst === true && node.donefirst === false) {
// do nothing
}
else {
node.send(msg);
}
}
}
});
feedparser.on('meta', function (meta) {});
feedparser.on('end', function () {});
};
node.interval_id = setInterval(function() { node.donefirst = true; getFeed(); }, node.interval);
getFeed();
}
node.on("close", function() {
if (this.interval_id != null) {
clearInterval(this.interval_id);
}
});
}
RED.nodes.registerType("feedparse",FeedParseNode);
}