This is a simple helper gem that automaticall installs the DynamoDB local tool and provides a simple ruby wrapper binar that allows you start and stop the local DynamoDB server from the command line.

IMPORTANT: You must have the Java Runtime Engine (JRI) version 6.x or newer installed for the local serverto work; it will not run on older JRE versions.

Add this line to your application's Gemfile:

gem 'dynamodb-local'

And then execute:

$ bundle

Or install it yourself as:

$ gem install dynamodb-local

Executing the dynamodb-local binary will start the DynamoDB local server in the foreground. It currently passes all arguments through to the underlying server. Those are:

 -dbPath      Specify the location of your database file. Default
                    is the current directory.
 -help              Display DynamoDB Local usage and options.
 -inMemory          When specified, DynamoDB Local will run in memory.
 -port    Specify a port number. Default is 8000

The v1 Ruby SDK ships with two versioned client classes, '2011-12-05' and '2012-08-10'. DynamoDB local only works with the 2012 API version. So you must specify the 2012 verion when creating a DynamoDB client.

# either of the following versions will create an appropriate client
# that will work with DynamoDB local
ddb = AWS::DynamoDB::Client.new(api_verison: '2012-08-10')
ddb = AWS::DynamoDB::Client::V20120810.new

# this defaults to older API version for backwards compatability
# and will not work with DyanmoDB local
ddb = AWS::DynamoDB::Client.new

If you're using the v2 SDK, the 2012 API is the default version.

Additionally, you must turn SSL off when you using DynamoDB local.

# Full working configuration using AWS Ruby SDK v1
ddb = AWS::DynamoDB::Client.new(api_verison: '2012-08-10',
                                endpoint: 'localhost',
                                port: '8000',
                                use_ssl: false)

Alternatively, you can configure these as global defaults:

AWS.config(use_ssl: false,
           dynamo_db: { api_verison: '2012-08-10',
                        endpoint: 'localhost',
                        port: '8000' })
ddb = AWS::DynamoDB::Client.new

1. Fork it ( https://github.com/[my-github-username]/dynamodb-local/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request