Thanks James.

So for Wily introscope( wily-agent based monitoring tool) integration, if I go with firehose approach, I need to write my own nozzle for Introscope like for datadog ?

https://github.com/cloudfoundry-incubator/datadog-firehose-nozzle

I am assuming that I will be using dea-agent to fetch metrics and logs instead of wily-agent?

My introscope nozzle will call doppler to fetch metrics and Introscope forwarder will forward it to Introscope Enterprise Manager (a server which has web-client to access metrics dashboard) ?