aws-gatling-tools

aws-gatling-tools is an AWS stress testing tool used by gatling to perform stress tests using processes on Fargate, output reports to S3, and notify chats of the URL of the report.

project structure

terraform
- The terraform scripts for deploying a stress-test environment on AWS.
gatling-aggregate-runner
- The application to manage stress testing.
gatling-runner
- The application that performs stress tests.
gatling-s3-reporter(not sbt project)
- The application that aggregates logs and outputs a report to S3.
api-server(for test)
- The server application for testing.

preparation

installing tool
```
$ brew install sbt awscli jq terraform
```
installing Docker for Mac
register an IAM user in AWS account

add a profile for the IAM user as aws-gatling-tools to ~/.aws/credentails.

[aws-gatling-tools]
aws_access_key_id = XXXXX
aws_secret_access_key = XXXXX
region = ap-northeast-1

build the AWS environment

$ cd terraform
terraform $ cp terraform.tfvars.default terraform.tfvars
terrafrom $ vi terrafrom.tfvars # edit
terraform $ terraform init
terraform $ terraform plan
terraform $ terraform apply

If you don't need the test application(api-server), please comment out the following part of terraform/main.tf.

# module "ecr_api_server" {
#   source   = "./api-server"
#   prefix   = var.prefix
#   owner    = var.owner
#   vpc_id = module.vpc.vpc_id
#   subnet_ids = module.vpc.public_subnets
#   aws_subnet_public = var.aws_subnet_public
#   api_server_ecs_cluster_name = var.api_server_ecs_cluster_name
#   api_server_ecr_name = var.api_server_ecr_name
#   aws_account_id = var.account_id
# }

build the test application(if necessary)

This is just to check the operation.It is not necessary if you use your own test application.

# api-server docker build & push
$ AWS_DEFAULT_PROFILE=aws-gatling-tools sbt api-server/ecr:push

build the stress-test tools

# gatling-runner docker build & push
$ AWS_DEFAULT_PROFILE=aws-gatling-tools sbt gatling-runner/ecr:push

# gatling-s3-reporter docker build & push
$ cd gatling-s3-reporter && make release && cd ..

# gatling-aggregate-runner build & push
$ AWS_DEFAULT_PROFILE=aws-gatling-tools sbt gatling-aggregate-runner/ecr:push

run a stress-test

$ cp run-stress-test.sh.default run-stress-test.sh
$ vi run-stress-test.sh # edit stress-test conditions
$ sh ./run-stress-test.sh

Aggregate Runner starts on the ECS cluster.
Aggregate Runner starts the specified number of Runners, notifies to chat.
Wait for all Runners until finish.
After all runners have finished, launch the S3 Reporter, Aggregate Runner notifies to chat
Aggregate Runner notifies the url to gatling report on S3.

All control is performed by Aggregate Runner, so the terminal can be closed after execute the command.

chat log example

Gatling Runner started:
task arns = [
https://ap-northeast-1.console.aws.amazon.com/ecs/home?region=ap-northeast-1#/clusters/j5ik2o-aws-gatling-tools-ecs/tasks/xxxxxxxxxx/details
...
https://ap-northeast-1.console.aws.amazon.com/ecs/home?region=ap-northeast-1#/clusters/j5ik2o-aws-gatling-tools-ecs/tasks/xxxxxxxxxx/details
]
runTaskCount = 10, runTaskEnvironments = Map(GATLING_S3_BUCKET_NAME -> j5ik2o-aws-gatling-tools-logs, GATLING_PAUSE_DURATION -> 3s, GATLING_TARGET_ENDPOINT_BASE_URL -> http://tf-xxxxxxxxxx-xxxxxxxx.ap-northeast-1.elb.amazonaws.com, GATLING_EXECUTION_ID -> api-server/xxxxxxxx-xxxxxxxxx, GATLING_SIMULATION_CLASS -> com.github.j5ik2o.gatling.BasicSimulation, GATLING_RAMP_DURATION -> 200s, GATLING_RESULT_DIR -> target/gatling, GATLING_HOLD_DURATION -> 5m, GATLING_USERS -> 10, AWS_REGION -> ap-northeast-1)
Gatling Runner finished: task arns = [
https://ap-northeast-1.console.aws.amazon.com/ecs/home?region=ap-northeast-1#/clusters/j5ik2o-aws-gatling-tools-ecs/tasks/xxxxxxxxxx/details
...
https://ap-northeast-1.console.aws.amazon.com/ecs/home?region=ap-northeast-1#/clusters/j5ik2o-aws-gatling-tools-ecs/tasks/xxxxxxxxxx/details
]
Gatling Reporter started: task arns = https://ap-northeast-1.console.aws.amazon.com/ecs/home?region=ap-northeast-1#/clusters/j5ik2o-aws-gatling-tools-ecs/tasks/xxxxx-xxxxx-xxxxx-xxxx-xxxxxxxxxxx/details
runTaskReporterEnvironments = Map(AWS_REGION -> ap-northeast-1, GATLING_BUCKET_NAME -> j5ik2o-aws-gatling-tools-logs, GATLING_RESULT_DIR_PATH -> api-server/xxxxxxxxxxx-xxxxxxxxxxxx)
Gatling Reporter finished: report url: https://j5ik2o-aws-gatling-tools-logs.s3.amazonaws.com/api-server/xxxxxxxxx-xxxxxxxxxxx/index.html

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