POST or GET to Nifty Cloud Mobile Backend

gistfile1.rb

# -*- coding: utf-8 -*-
require 'time'
require 'openssl'
require 'Base64'
require "net/http"
require "uri"
APPLICATION_KEY = 'your_application_key'
CLIENT_KEY      = 'client_key'
DOMAIN          = "mb.api.cloud.nifty.com"

def ncmb_query(method, path, queries = {})
  encoded_queries = {}
  queries.each do |k, v|
    encoded_queries[URI.encode(k.to_s)] = URI.encode(v.to_s)
  end
  params_base = {
    "SignatureMethod" => "HmacSHA256",
    "SignatureVersion" => "2",
    "X-NCMB-Application-Key" => APPLICATION_KEY
  }
  params = params_base.merge(encoded_queries)
  now = Time.now.utc.iso8601
  params = params.merge "X-NCMB-Timestamp" => now
  params = Hash[params.sort{|a, b| a[0].to_s <=> b[0].to_s}]
  query = encoded_queries.collect{|k,v| "#{k}=#{v}"}.join('&')
  signature_base = <<-EOS
#{method}
#{DOMAIN}
#{path}
#{params.collect{|k,v| "#{k}=#{v}"}.join("&")}
  EOS
  signature_base.chomp!
  signature = Base64.encode64(OpenSSL::HMAC.digest(OpenSSL::Digest::Digest.new('sha256'), CLIENT_KEY, signature_base)).strip()
  http = Net::HTTP.new(DOMAIN, 443)
  http.use_ssl=true
  headers = {"X-NCMB-Application-Key" => params_base["X-NCMB-Application-Key"], 
    "X-NCMB-Signature" => signature,
    "X-NCMB-Timestamp" => now,
    "Content-Type" => 'application/json'}
  path = path + (query == '' ? "" : "?"+query)
  if method == "GET"
    return http.get(path, headers).body
  else
    return http.post(path, headers).body
  end
end

if __FILE__ == $PROGRAM_NAME
  path = "/2013-09-01/classes/TestClass"  # 実行するURL
  queries = {:count => "1", :limit => "20", :order => "-createDate", :skip => "0", :where => '{"message":"test"}'} # クエリ
  puts ncmb_query "POST", path, queries
end