Export data from Mixpanel

mixpanel_export.rb

#!/usr/bin/env ruby

require 'active_support/time'
require 'digest'

API_KEY    = 'YOUR KEY'
API_SECRET = 'YOUR SECRET'

args = {
  'from_date' => Date.new(2014,9,1).iso8601,
  'to_date'   => Date.today.iso8601,
  'api_key'   => API_KEY,
  'expire'    => 15.minutes.from_now.utc.to_i
}

# Sort the args, and concat without a delimiter.
args        = Hash[args.sort]
args_concat = args.map { |k, v| "#{k}=#{v}" }.join ''

# Create a signature using MD5(args_concat + API_SECRET).
md5 = Digest::MD5.new
md5 << args_concat
md5 << API_SECRET

# Add that into the arg hash.
args['sig'] = md5.hexdigest

# Generate the request URL.
url_params  = args.map { |k, v| "#{k}=#{v}" }.join '&'
puts "https://data.mixpanel.com/api/2.0/export/?#{url_params}"

# Finally, curl that url and save to a file.