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datastore to bigquery data export

Google Cloud Provides a ready made script to run scheduled export from datastore.
I am using that export data as input to BigQuery.

To get it done, I had created to crons,

First for calling data export operationSecond for loading that exported data to BigQuery

Problem I was facing was that export was taking some time more time than I have assumed, So Bigquery loading cron was getting initiated before data export opertion get completed, and result bigquery loading was failing.

Solution was to make those two cron job as a single one which works as chain. On successful completion of task one second gets called.

So, I just modified the schedule export script provided by google, which exports files, and then checks if operation is successfully done or not fixed time intervals in loop, and if operation is found to be done successfully, it calls BigQuery load task.

Here is gist

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