Abort query request

[pavelvlasov]

Is there any way to abort request after keenClient.run(...)?

[dustinlarimer]

@pavelvlasov thanks for submitting this question, and apologies for the late reply. Would you mind expanding on this a bit? In which circumstances would need to abort a request? Just curious-

[pavelvlasov]

@dustinlarimer sorry for a late response. We have chart with several lines and timeframe selector. I just want to abort query requests if user need another timeframe, or timeframe was selected by mistake. Because sometimes queries take a lot of time and it doesn't make sense to wait, if another interval was selected.

[dustinlarimer]

@pavelvlasov thanks for the reply! Copying my response from this comment, perhaps this will work for you as well? #370 (comment)

The request object that client.run() returns includes a basic event emitter, and emits a "complete" event when a query is returned. I wonder if this could help right now, as-is:

var req = client.run(query);

// Subscribe
req.on('complete', handleResponse);

// Unsubscribe
req.off('complete');

Do you think that might do the trick? This won't abort the XHR request, but may prevent the error that's holding you up.

Also, give keen-analysis.js a look. This is a new SDK currently being developed, but is stable enough to use. It runs on the Bluebird promise library, making use of the .cancel() method for aborting XHR requests.

[pavelvlasov]

thanks @dustinlarimer! keen-analysis looks like a good option.

Solution from your comment won't work for me, because I need to abort XHR. We're performing 3-4 concurrent requests to keen for each chart, so it can slow down the UI a lot.

Aren't you going to add abort feature soon? Because we're widely using keen-js in our project and migrating to keen-analysis will take a lot of time.

[dustinlarimer]

@pavelvlasov totally understand that concern. If we can get this PR updated to use the .cancel() instead of .abort() I would be happy to release this. I'll drop the note on this PR as well. #370