custom_metric.rb

require 'rubygems'
require 'dogapi'

# Create a simple client
# The host is optional here, it's a shortcut to tie event and metrics to a given host
#
# You typically want to do:
#   Dogapi::Client.new(your_actual_api_key_as_a_string, ...)
# We are using ENV to let you experiment via an environment variable.
dog = Dogapi::Client.new(ENV['DATADOG_KEY'])

# Emit a list of points in one go as a list of (timestamp, value)
# here we pretend to send a point a minute for the past hour
now = Time.now
points = (0...60).map do |i|
  i = 60 - i
  t = now - (i*60)
  [t, Math.cos(i) + 1.0]
end

# And emit the data in one call
x = Time.now
dog.emit_points('test.api.test_metric', points)
puts Time.now - x