class Fastly

See http://docs.fastly.com/docs/stats for details.

region:: restrict query to a particular region
by:: the sampling rate used to produce the result set (minute, hour, day)
to:: latest time from which to fetch historical statistics
from:: earliest time from which to fetch historical statistics

Other options available are:

If you pass in an :aggregate flag then fetches historical stats information aggregated across all of your Fastly services. This cannot be combined with :field and :service.

The :field and :service opts can be combined.
If you pass in a :service opt then fetches only the specified service.
If you pass in a :field opt then fetches only the specified field.

Fetches historical stats for each of your fastly services and groups the results by service id.

def stats(opts)
  if opts[:aggregate] && (opts[:field] || opts[:service])
    fail Error, "You can't specify a field or a service for an aggregate request"
  end
  url  = '/stats'
  url += '/aggregate' if opts.delete(:aggregate)
  if service = opts.delete(:service)
    url += "/service/#{service}"
  end
  if field = opts.delete(:field)
    url += "/field/#{field}"
  end
  client.get_stats(url, opts)
end