Reloading charts and out-of-sequence reqId

[Nick Wei]

I'm using the Super Proxy to feed a dashboard with 5 widgets on it.  The dashboard has a time frame selector that allows the user to view the trend over 7 days, 30 days, 90 days.

I'm trying to get the dashboard to refresh without reloading so I've tried two methods with partial success.

1. I tried using ChartWrapper.setDataSourceUrl() with the corresponding URL for the new time frame followed by ChartWrapper.draw() to redraw the chart, this worked for some of the widgets but one or two didn't work correctly
2. I tried emptying the chart divs then instantiating fresh ChartWrappers from scratch with the new URLs.  This actually worked better, I can get through the three time frames in order to redraw but if I jump from 7 days (the default loaded) to 90 days, or after the third, try to go back to one of the other two, I see the problem below.

However at some point, regardless of the method, it seems the reqId returned by the Super Proxy for a given response no longer matches the reqId sent in the original request and the widgets break with 

"Uncaught Error: Missing query for request id: X" where sometimes X is the last digit of the actual reqId (ie. 17 is returned as 7) or at other times, a sequence number gets "lost" (ie. 4 is returned as 3).

My next step will be to break down the Super Proxy code to figure out why this is happening but I'm not a Python expert so I was wondering if anyone out there has had a similar experience and what that fix might be.

I'd love to share some code but I can't right now because my queries are pointed at confidential data.  If anybody is even reading this and has some interest, I can certainly look at sanitizing the code for sharing.

Thanks

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[bakablah]

Hey Nick,

I've had a similar issue as you encountered last year.

I'd posted a solution for this previously:

Give this solution a try and see if it works for you.

Regards,

Wilfrid

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The Request Time Out error was caused by the Google Charts API sending out a specific reqId to Super Proxy, and Super Proxy have cached the previous ReqId and returned the old ReqId instead.
This caused Google Charts API to 'Timeout'.
I've fixed this in my own version of Super Proxy and I've commented on the issue in the original bug tracker link. https://github.com/googleanalytics/google-analytics-super-proxy/issues/17

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[Nick Wei]

This is awesome, thanks Wilfrid, works like a charm.

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Nick Wei

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