The interface for streaming metrics to the cloud services seems to match the intended use of output plugins. It might not be a 100% match, which is why we need to discuss it further (here). Some points to clarify:

• Authentication. I'm thinking the plugin can look for credentials in a file or in environment variables, like tools interacting with AWS do.

• How do we transport the data most effectively? Client-to-cloud streaming (chunking in HTTP/1 parlance), periodic batching with POST requests or something I don't know about in HTTP/2?

Imported from https://trello.com/c/0Rzly0xL/90-output-plugin-kcs-metrics-streaming