rake to dump woocommerce products onto mongodb

rakefile.rb

require 'Mysql2'
require 'json'
require 'mongo'

namespace :db do
  task :backup do
    client = Mysql2::Client.new(:host => "localhost", :socket => '/Applications/MAMP/tmp/mysql/mysql.sock', :username => "root", :database => "elrinconecologico_db", :password => "root")
    mongo_client = Mongo::Client.new('mongodb://127.0.0.1:27017/database')
    products = client.query("SELECT * FROM wp_posts where post_type='product' and post_name <> ''")
    products.each do |product|
      product_meta = client.query("SELECT * FROM wp_postmeta where post_id=#{product['ID']}")
      temp_hash = Hash.new
      product_meta.each do |meta|
        temp_hash[meta['meta_key']] = meta['meta_value']
      end
      product['post_meta'] = temp_hash
      mongo_client[:products].insert_one(product['post_meta'])
    end
  end
end