- Introduction
- Getting started
- Building the plugin
- Running the live tests
- Implementation details
- Important notice
This project defines an open source plugin implementing the Cloudera Director Service Provider Interface (Director SPI) for Amazon Web Services (AWS).
The plugin implements a compute provider that allocates Amazon Elastic Compute Cloud (EC2) instances, and a database server provider that allocates Amazon Relational Database Service (RDS) instances.
Because the AWS plugin ships with Cloudera Director, these instructions are primarily geared towards plugin authors, who may be interested in using this plugin as an example or a base for their own plugins. They assume familiarity with git, github, maven, and other software development technologies; AWS concepts and terminology; and some familiarity with Cloudera Director and the Director SPI.
Additional details can be found in the source code, in the AWS Plugin javadoc, and in the Cloudera Director User Guide.
Prior to using the plugin, you will need to have AWS credentials.
You can build the plugin with mvn clean install. Maven will need access to the Director SPI, either via the Cloudera Repository referenced in pom.xml, or via a local build.
By default, the unit tests do not require communication with AWS. To run live tests that allocate and destroy EC2 and RDS instances, you must specify a system property (mvn -Dtest.aws.live=true clean install), and arrange for your AWS credentials to be available to the default credential provider chain via one of the methods described here.
The plugin follows the implementation pattern described in the Director SPI documentation.
The major classes are:
- The launcher (AWSLauncher)
- The cloud provider (AWSProvider)
- The resource providers (EC2Provider and RDSProvider)
- The corresponding resource templates (EC2InstanceTemplate and RDSInstanceTemplate)
- The corresponding resources (EC2Instance and RDSInstance)
The configuration properties are implemented as nested enums of configuration property tokens. A representative example is EC2InstanceTemplate.EC2InstanceTemplateConfigurationPropertyToken.
The display properties are implemented as nested enums of display property tokens. A representative example is EC2Instance.EC2InstanceDisplayPropertyToken.
Validation is implemented via composite validators, each containing a default validator and a custom validator. A representative custom validator example is EC2InstanceTemplateConfigurationValidator.
Localization uses the default localization support provided by the Director SPI.
Logging uses the SLF4J logging API, as required by the Director SPI.
Additional filesystem configuration is specified in HOCON and loaded using the typesafe config library.
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