Support configuration of access log format

[gtcampbell]

We currently hard-code the format for access logs; it would be better if we allowed this to be configured. It probably makes the most sense to support Apache's format strings.

[leozc]

Do we have any plan on this ?

May be parsing a param from route down to Finagle that will help ?

[wmorgan]

It's not on the short-term roadmap AFAIK. Are there specific formats you want to support?

[bashofmann]

It would be great to include the time taken to serve the request (like the %{UNIT}T flag in apache's format strings)

[wmorgan]

@bashofmann good idea! FYI, you can get aggregate statistics of that info through the metrics.json endpoint currently (and raw data in individual traces).