Method: PEROBS::DynamoDB#initialize

Defined in:
lib/perobs/DynamoDB.rb

#initialize(db_name, options = {}) ⇒ DynamoDB

Create a new DynamoDB object.

Parameters:

  • db_name (String) —

    name of the DB directory

  • options (Hash) (defaults to: {}) —

    options to customize the behavior. Currently only the following options are supported: :serializer : Can be :json and :yaml :aws_id : AWS credentials ID :aws_key : AWS credentials key :aws_region : AWS region to host the data



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# File 'lib/perobs/DynamoDB.rb', line 46

def initialize(db_name, options = {})
  # :marshal serialization results in a binary format that cannot easily
  # be stored in DynamoDB. We fall back to :yaml.
  if options[:serializer] == :marshal
    options[:serializer] = :yaml
  end

  super(options[:serializer] || :json)

  if options.include?(:aws_id) && options.include?(:aws_key)
    Aws.config[:credentials] = Aws::Credentials.new(options[:aws_id],
                                                    options[:aws_key])
  end
  if options.include?(:aws_region)
    Aws.config[:region] = options[:aws_region]
  end

  @dynamodb = Aws::DynamoDB::Client.new
  @table_name = db_name
  ensure_table_exists(@table_name)

  # Read the existing DB config.
  @config = get_hash('config')
  check_option('serializer')
  put_hash('config', @config)
end