Camel body size

Hello-

I opened a ticket to request adding a feature for components to provide a Body size to the Exchange that could be used by Simple, or set as a header.

https://issues.apache.org/jira/browse/CAMEL-6984

I see it solving a couple things:

1. Provide throughput metrics
2. Route based on message sizing

What does the community think about this? Any suggestions on improvements/features or implementation approaches?

Thanks,
Matt Pavlovich