Dataflow Metrics - inbound_messages metric

[a_wali]

"I'm trying to find the best way to get metrics about incoming data sources in dataflow, regardless of whether the source is Pub/Sub, Kafka, etc.

When I check storage_read_bytes  for a running pipeline, I don't see data being populated in explorer because its only available for pipelines running with streaming engine enabled.

Element count can provide input source metrics if filtered by a specific stage, but I'm looking for a metric that gives insight into incoming data volumes across sources without needing to specify the stage.

I tried checking the documentation for inbound_messages metric but couldn't find any information on it.

Does anyone have recommendations on the best way to get aggregated metrics on data volumes coming into a dataflow pipeline from any source? Is there configuration needed to populate the inbound_message metrics? Or is there a better metric I should use to monitor inbound data rates?

Any guidance is much appreciated!"

[nceniza]

This documentation might help with your inquiry on Input and Output Metrics. This is available when you are streaming Dataflow job reads or writes records using Pub/Sub. 

[a_wali]

That would provide me with the metrics by examining the job, which in this case is Pub/Sub. Let's say I am running multiple jobs - one using a Pub/Sub topic and another using a Kafka topic. However, I want to access monitoring and be able to view the metrics for both jobs without depending on the input source they use. A general Input Metric.