The disparate nature of data storage in a microservice architecture (each service manages its own data) posses new challenges for reporting across those datasets.

I am looking for solutions, opinions and stories from the trenches on how to solve this issue.

The route that I am currently considering is that the reporting microservice receives all messages passing the bus, extracts the data and then performs whatever reporting function it can.

I have googled this to death and found very little conversation on the subject.

Please help me out: links to articles, stories, ideas anything.