Distributed Load Testing on AWS

The Distributed Load Testing Solution leverages managed, highly available and highly scalable AWS services to effortlessly create and simulate thousands of connected users generating a selected amount of transactions per second. As a result, developers can understand the behavior of their applications at scale and at load to identify any bottleneck problems before they deploy to Production.

On this Page

• Architecture Overview
• Deployment
• Source Code
• Creating a custom build

Architecture Overview

Deployment

The solution is deployed using a CloudFormation template with a lambda backed custom resource. For details on deploying the solution please see the details on the solution home page: Distributed Load Testing

Source Code

source/api-services
A NodeJS Lambda function for the API microservices. Integrated with Amazon API Gateway, used to manage test scenarios.

source/console
ReactJS Single page application to provide a GUI to the solutions. Authenticated through Amazon Cognito this dashboard allows users to Create tests and view the final results.

source/container
The Taurus DockerFile and bash script run at start of the test to download the test definition from S3. This is the source file for the image pipeline to build and deploy the Docker image to Amazon ECR. Details on Taurus can be found here.

source/custom-resource
A NodeJS Lambda function used as a CloudFormation custom resource for configuring Amazon S3 bucket notifications and to send anonymous metrics.

source/ecr-checker
A NodeJS Lambda function that checks if the Amazon ECR is ready or not.

source/results-parser
A NodeJS Lambda function used to write the xml output from the docker images to Amazon DynamoDB and generate the final results for each test.

source/task-canceler
A NodeJS Lambda function used to stop tasks for a test that has been cancelled.

source/task-runner
A NodeJS Lambda function that runs the Amazon ECS task definition for each test.

source/task-status-checker
A NodeJS Lambda function that checks if the Amazon ECS tasks are running or not.

Creating a custom build

The solution can be deployed through the CloudFormation template available on the solution home page: Distributed Load Testing. To make changes to the solution, download or clone this repo, update the source code and then run the deployment/build-s3-dist.sh script to deploy the updated Lambda code to an Amazon S3 bucket in your account.

Prerequisites:

• AWS Command Line Interface
• Node.js 12.x or later

1. Clone the Distributed Load Testing on AWS solution repository

Clone the distributed-load-testing-on-aws GitHub repositroy, then make the desired code changes.

git clone https://github.com/awslabs/distributed-load-testing-on-aws.git

2. Run unit tests

Run unit tests to make sure added customization passes the tests:

cd ./deployment
chmod +x ./run-unit-tests.sh
./run-unit-tests.sh

3. Declare environment variables

export REGION=aws-region-code # the AWS region to launch the solution (e.g. us-east-1)
export DIST_OUTPUT_BUCKET=my-bucket-name # bucket where customized code will reside
export SOLUTION_NAME=my-solution-name
export VERSION=my-version # version number for the customized code

4. Create an Amazon S3 Bucket

The CloudFormation template is configured to pull the Lambda deployment packages from Amazon S3 bucket in the region the template is being launched in. Create a bucket in the desired region with the region name appended to the name of the bucket. eg: for us-east-1 create a bucket named: my-bucket-us-east-1

aws s3 mb s3://$DIST_OUTPUT_BUCKET-$REGION --region $REGION

5. Create the deployment packages

Build the distributable:

chmod +x ./build-s3-dist.sh
./build-s3-dist.sh $DIST_OUTPUT_BUCKET $SOLUTION_NAME $VERSION

Notes: The build-s3-dist script expects the bucket name as one of its parameters, and this value should not include the region suffix. In addition to that, the version parameter will be used to tag the npm packages, and therefore should be in the Semantic Versioning format.

6. Upload deployment assets to your Amazon S3 bucket

Deploy the distributable to the Amazon S3 bucket in your account:

aws s3 cp ./regional-s3-assets/ s3://$DIST_OUTPUT_BUCKET-$REGION/$SOLUTION_NAME/$VERSION/ --recursive --acl bucket-owner-full-control
aws s3 cp ./global-s3-assets/ s3://$DIST_OUTPUT_BUCKET-$REGION/$SOLUTION_NAME/$VERSION/ --recursive --acl bucket-owner-full-control

7. Launch the CloudFormation template.

• Get the link of the distributed-load-testing-on-aws.template uploaded to your Amazon S3 bucket.
• Deploy the Distributed Load Testing on AWS solution to your account by launching a new AWS CloudFormation stack using the link of the distributed-load-testing-on-aws.template.

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