I've got a scenario where using an auth token would be preferred over basic auth. I know http_poller doesn't handle this currently, but do you think it might be possible in the future?
I suppose one big challenge is the variety of methods APIs use for providing and accepting auth tokens, which makes this problem resemble the previously discussed pagination issue (Response Headers http_poller), and so it looks intractable.
What about allowing for pre- and post-query arbitrary Ruby, with the ability to read from and modify plugin state and HTTP headers?