I have logs which I am trying to push to Google BigQuery. I am trying to build the entire pipeline using google dataflow. The log structure is different and can be classified into four different type. In my pipeline I read logs from PubSub parse it and write to BigQuery table. The table to which the logs need to written is depending on one parameter in logs. The problem is I am stuck on a point where how to change TableName for BigQueryIO.Write at runtime.
Google dataflow write to mutiple tables based on input
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You can use side outputs.
https://cloud.google.com/dataflow/model/par-do#emitting-to-side-outputs-in-your-dofn
The following sample code, reads a BigQuery table and splits it in 3 different PCollections. Each PCollections ends up sent to a different Pub/Sub topic (which could be different BigQuery tables instead).