Reactive Extensions (Rx) execute periodic task - scheduled-tasks

Question

I'm using Rx and want to execute a task periodically, let's say, every 1 minute.
My task is about to fetch, asynchronously, Feeds from an array of URLs and it's working properly:
var rssLinks = ["http://host1/rss.xml", "http://host2/rss.xml", "http://host3/rss.xml"];
// My Task
var task = Rx.Observable.from(rssLinks)
.flatMap(functions.fetchFeeds);
task.subscribe(function(feed) {
console.log("\nFeed " + feed.title + ", " + feed.link);
});
So. I've read about Scheduler and its schedulePeriodic method BUT I can't execute my task periodically.
var disposable = Rx.Scheduler.timeout.schedulePeriodic(
60000, /* 1 minute */
function () {
// Execute My Task...
});
Any ideas?
Thanks in advance!

Answer 1

You're just looking for Rx.Observable.interval, so something like this will do:
var taskResults = Rx.Observable.interval(60000).flatMap(function() {
return Rx.Observable.from(rssLinks).flatMap(functions.fetchFeeds);
});
taskResults.subscribe(function(x) {
// do whatever here.
});
Edit: The "what if I want rssLinks to determin my intervals" answer (from comments)
So something like this, maybe?
var rssLinks = [{ interval: 5000, url: 'http://whatever'}, { interval: 3000, url: 'https://foobar' }];
var taskResults = Rx.Observable.from(rssLinks).flatMap(function(rssLink) {
return Rx.Observable.interval(rssLink.interval).map(function(rssLink) {
return functions.fetchFeeds(rssLink.url);
});
});