cron

AWS Flow Framework for Ruby: Cron Sample Application

The Cron sample runs an activity periodically based on a cron expression.

Downloading the Sample Code

To view or download the code for all of the AWS Flow Framework for Ruby recipes and samples, go to:

• https://github.com/awslabs/aws-flow-ruby-samples

Prerequisites for Running the Samples

The AWS Flow Framework for Ruby is required, which can be obtained and installed using the information here:

• https://aws.amazon.com/swf/flow/

If you already have Ruby and RubyGems installed, you can install the framework and all of the gems required by the samples by opening a terminal window, changing to the directory where you've cloned or downloaded the samples, and typing:

bundle install

This will install all of the requirements that are listed in the Gemfile in the repository's base directory.

For more information about setting up the AWS Flow Framework for Ruby, see Installing the AWS Flow Framework for Ruby in the AWS Flow Framework for Ruby Developer Guide.

Run the Sample

To run the Cron sample:

1. Open three separate terminal windows and, in each one, change to the lib directory in the location where you cloned or unarchived the sample code. For example:

   cd ~/Downloads/aws-flow-ruby-samples/samples/cron/lib
   

2. In each command-line (terminal) window, execute the following commands, substituting your AWS Access keys for the example values.

   On Linux, OS X or Unix:

   export AWS_ACCESS_KEY_ID='your-access-key'
   export AWS_SECRET_ACCESS_KEY='your-secret-key'
   export AWS_REGION='your-aws-region'
   

   On Windows:

   set AWS_ACCESS_KEY_ID=your-access-key
   set AWS_SECRET_ACCESS_KEY=your-secret-key
   set AWS_REGION=your-aws-region
   

3. Execute the following commands, one in each of the terminal windows:

   ruby cron_activity.rb
   
   ruby cron_workflow.rb
   
   ruby cron_workflow_starter.rb
   

For More Information

For more information about the Amazon Simple Workflow service and the Amazon Flow Framework for Ruby, consult the following resources:

• AWS Flow Framework for Ruby Developer Guide
• AWS Flow Framework for Ruby API Reference
• AWS Flow Framework
• Amazon Simple Workflow Service