gistfile1.rb

#!/usr/bin/env ruby

require 'aws-sdk'

options = {
  :access_key_id     => 'AWS_ACCESS_KEY',
  :secret_access_key => 'AWS_SECRET_ACCESS_KEY',
  :dynamo_db_endpoint => 'dynamodb.ap-northeast-1.amazonaws.com',
}

dynamo_db = AWS::DynamoDB.new(options)
table = dynamo_db.tables['test']
table.load_schema

# fetching today's log
table.items.where(:time).begins_with(Time.now.strftime('%Y-%m-%d')).each{|item|
  item.attributes.each {|key, value|
    puts "#{key}: #{value}"
  }
}