Create dynamodb table with global index example aws-sdk ruby

create.rb

def setup_dynamo
  options = {
      :table_name => 'servers',
      :attribute_definitions => [
          {
              :attribute_name => 'uid',
              :attribute_type => 'S'
          },
          {
              :attribute_name => 'private_ip',
              :attribute_type => 'S'
          },
          {
              :attribute_name => 'public_ip',
              :attribute_type => 'S'
          }
      ],
      :key_schema => [
          {
              :attribute_name => 'uid',
              :key_type => 'HASH'
          }
      ],
      global_secondary_indexes: [
          {
              index_name: 'private_ip',
              key_schema: [
                  {
                      attribute_name: 'private_ip',
                      key_type: 'HASH',
                  },
              ],
              projection: {
                  projection_type: 'ALL',
              },
              :provisioned_throughput => {
                  read_capacity_units: 1,
                  write_capacity_units: 1,
              }},
          {
              index_name: 'public_ip',
              key_schema: [
                  {
                      attribute_name: 'public_ip',
                      key_type: 'HASH',
                  },
              ],
              projection: {
                  projection_type: 'ALL',
              },
              :provisioned_throughput => {
                  read_capacity_units: 1,
                  write_capacity_units: 1,
              }}
      ],
      :provisioned_throughput => {
          read_capacity_units: 1,
          write_capacity_units: 1,
      },
  }
  table_list = $dynamodb.list_tables
  $dynamodb.create_table(options) unless table_list.table_names.include?(options[:table_name])
rescue => error
  puts 'Encountered an error setting up Dynamo'
  puts "#{error.message}"
  exit(1)
end