Sample to get all items from DynamoDB table

01_dynamodb_get_all.rb

# frozen_string_literal: true

require 'aws-sdk-dynamodb'
require 'hirb'

# NOTICE: Authorize via https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html
dynamodb = Aws::DynamoDB::Client.new

scan_opts = { table_name: '<TABLE_NAME>' }
items = []
total = 0

loop do
  response = dynamodb.scan(scan_opts)
  items << response.items

  # TODO: Here you can filter or process items
  
  break unless (last = response.last_evaluated_key)
  scan_opts.merge!(exclusive_start_key: last)
end

puts Hirb::Helpers::AutoTable.render(items, max_width: 220)

puts "Total: #{total}"

Gemfile

# frozen_string_literal: true

source 'https://rubygems.org'

git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }

gem 'aws-sdk-dynamodb'
gem 'hirb'