AWS DynamoDB Plugin

The plugin provides functionality to interact with Amazon DynamoDB.

Installation

Copy the below line to dependencies section of the project build.gradle file
Example 1. build.gradle
```
implementation(group: 'org.vividus', name: 'vividus-plugin-aws-dynamodb', version: '0.5.9')
```
If the project was imported to the IDE before adding new plugin, re-generate the configuration files for the used IDE and then refresh the project in the used IDE.

Configuration

Authentication

The plugin attempts to find AWS credentials by using the default credential provider chain. The provider chain looks for credentials using the provided below options one by one starting from the top. If credentials are found at some point, the search stops and further options are not evaluated.

The AWS credentials scoped to either current scenario or story (configured via the corresponding step).
Environment variables: AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY (the optional variable for session token is AWS_SESSION_TOKEN).
The properties: system.aws.accessKeyId and system.aws.secretKey (the optional property for session token is system.aws.sessionToken).
Web Identity Token credentials from the environment or container.
In the default credentials file (the location of this file varies by platform).
Credentials delivered through the Amazon EC2 container service if the AWS_CONTAINER_CREDENTIALS_RELATIVE_URI environment variable is set and security manager has permission to access the variable.
In the instance profile credentials, which exist within the instance metadata associated with the IAM role for the EC2 instance. This step is available only when running your application on an Amazon EC2 instance, but provides the greatest ease of use and best security when working with Amazon EC2 instances.
If the plugin still hasn’t found credentials by this point, client creation fails with an exception.

See the official "Working with AWS Credentials" guide to get more details.

Region Selection

The plugin attempts to find AWS region by using the default region provider chain. The provider chain looks for a region using the provided below options one by one starting from the top. If region is found at some point, the search stops and further options are not evaluated.

Environment variable: AWS_REGION.
The property: system.aws.region.
AWS shared configuration file (usually located at ~/.aws/config).
Use the Amazon EC2 instance metadata service to determine the region of the currently running Amazon EC2 instance.
If the plugin still hasn’t found a region by this point, client creation fails with an exception.

See the official "AWS Region Selection" guide to get more details.

Cross-account Access

Cross-account access is achieved by switching roles. Use the following property to specify the Amazon Resource Name (ARN) of the role to assume:

aws.dynamodb.role-arn=

The property is empty by default: no role is assumed.

Steps

Querying Data

Execute PartiQL SELECT statement and save the result as JSON to the specified variable.

When I execute query `$partiqlQuery` against DynamoDB and save result as JSON to $scopes variable `$variableName`

$partiqlQuery - The PartiQL (A SQL-Compatible Query Language for Amazon DynamoDB) query representing the SELECT statement to execute.
$scopes - The comma-separated set of the variables scopes.
$variableName - The variable name to store results in JSON format.

Example 2. Execute SELECT statement and validate result

When I execute query `
    SELECT * FROM Music
    WHERE Artist='Roxette' and SongTitle='The Look'
` against DynamoDB and save result as JSON to scenario variable `song`
Then JSON element from `${song}` by JSON path `$` is equal to `
{
    "Artist": "Roxette",
    "SongTitle": "The Look"
}`

Manipulating Data

Execute PartiQL INSERT, UPDATE, DELETE statements.

When I execute query `$partiqlQuery` against DynamoDB

$partiqlQuery - The PartiQL (A SQL-Compatible Query Language for Amazon DynamoDB) query representing the INSERT, UPDATE or DELETE statement to execute.

Example 3. Execute INSERT statement

When I execute query `
    INSERT INTO Music
    value {'Artist':'Roxette','SongTitle':'The Look'}
` against DynamoDB

Example 4. Execute UPDATE statement

When I execute query `
    UPDATE Music
    SET AwardsWon=1
    SET AwardDetail={'Grammis':[1989, 1990]}
    WHERE Artist='Roxette' and SongTitle='The Look'
` against DynamoDB

Example 5. Execute DELETE statement

When I execute query `
    DELETE FROM Music
    WHERE Artist='Roxette' and SongTitle='The Look'
` against DynamoDB