scenario_partiql_single.rb

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0

# To run this demo, you will need Ruby 2.6 or later, plus dependencies.
# For more information, see:
# https://github.com/awsdocs/aws-doc-sdk-examples/blob/main/ruby/README.md

require 'aws-sdk-dynamodb'
require 'logger'
require 'json'
require 'zip'
require 'cli/ui'
require_relative('../../../helpers/disclaimers')
require_relative('../../../helpers/decorators')
require_relative('partiql_single')

# Runs the Amazon DynamoDB PartiQL demo.
# @return [Nil]
def run_scenario
  banner
  puts '######################################################################################################'.yellow
  puts '#                                                                                                    #'.yellow
  puts '#                                          EXAMPLE CODE DEMO:                                        #'.yellow
  puts '#                                       Amazon DynamoDB - PartiQL                                    #'.yellow
  puts '#                                                                                                    #'.yellow
  puts '######################################################################################################'.yellow
  puts ''
  puts 'You have launched a demo of Amazon DynamoDB using PartiQL and the AWS for Ruby v3 SDK. Over the next 60 seconds,
it will'
  puts 'do the following:'
  puts '    1. Create a new DynamoDB table.'
  puts '    2. Write batch data into the table'
  puts '    3. Get a single item from a table using PartiQL'
  puts '    4. Update a single item in a table using PartiQL'
  puts '    5. Delete a single item from a table using PartiQL'
  puts '    6. Insert a single item into a table using PartiQL'
  puts '    7. Destroy the DynamoDB table.'
  puts ''

  confirm_begin
  billing
  security
  puts "\e[H\e[2J"

  # snippet-start:[ruby.example_code.dynamodb.Scenario_PartiQL_Single]
  table_name = "doc-example-table-movies-partiql-#{rand(10**8)}"
  scaffold = Scaffold.new(table_name)
  sdk = DynamoDBPartiQLSingle.new(table_name)

  new_step(1, 'Create a new DynamoDB table if none already exists.')
  unless scaffold.exists?(table_name)
    puts("\nNo such table: #{table_name}. Creating it...")
    scaffold.create_table(table_name)
    print "Done!\n".green
  end

  new_step(2, 'Populate DynamoDB table with movie data.')
  download_file = 'moviedata.json'
  puts("Downloading movie database to #{download_file}...")
  movie_data = scaffold.fetch_movie_data(download_file)
  puts("Writing movie data from #{download_file} into your table...")
  scaffold.write_batch(movie_data)
  puts("Records added: #{movie_data.length}.")
  print "Done!\n".green

  new_step(3, 'Select a single item from the movies table.')
  response = sdk.select_item_by_title('Star Wars')
  puts("Items selected for title 'Star Wars': #{response.items.length}\n")
  print response.items.first.to_s.yellow
  print "\n\nDone!\n".green

  new_step(4, 'Update a single item from the movies table.')
  puts "Let's correct the rating on The Big Lebowski to 10.0."
  sdk.update_rating_by_title('The Big Lebowski', 1998, 10.0)
  print "\nDone!\n".green

  new_step(5, 'Delete a single item from the movies table.')
  puts "Let's delete The Silence of the Lambs because it's just too scary."
  sdk.delete_item_by_title('The Silence of the Lambs', 1991)
  print "\nDone!\n".green

  new_step(6, 'Insert a new item into the movies table.')
  puts "Let's create a less-scary movie called The Prancing of the Lambs."
  sdk.insert_item('The Prancing of the Lambs', 2005, 'A movie about happy livestock.', 5.0)
  print "\nDone!\n".green

  new_step(7, 'Delete the table.')
  return unless scaffold.exists?(table_name)

  scaffold.delete_table
end
# snippet-end:[ruby.example_code.dynamodb.Scenario_PartiQL_Single]

run_scenario if __FILE__ == $PROGRAM_NAME