k6-jslib-aws

A library enabling users to interact with AWS resources for k6.io

This is an AWS client library for k6. It intends to allow interacting with a subset of AWS services in the context of k6 load test script.

Supported features

At the moment, this library provides the following:

• S3Client: allows to list buckets and bucket's objects, as well as uploading, downloading, and deletion of objects.
• SecretsManager: allows to list, get, create, update and delete secrets from the AWS secrets manager service.
• SQS: allows to list queues and send messages from AWS SQS.
• KMS: allows to list KMS keys and generate a unique symmetric data key for use outside of AWS KMS
• SSM: allows to retrieve a parameter from AWS Systems Manager
• Kinesis: allows to list streams, create streams, put records, list shards, get shard iterators, and get records from AWS Kinesis.
• EventBridge: allows to put events to AWS EventBridge.
• Lambda: allows to invoke functions in AWS Lambda.
• V4 signature: allows to sign requests to amazon AWS services
• KinesisClient: allows all APIs for Kinesis available by AWS.

Want to contribute?

We welcome contributions from the community! Please read our contributing guide and code of conduct before getting started.

Demo

S3

Consult the S3Client dedicated k6 documentation page for more details on its methods and how to use it.

Practical example

import { check } from 'k6'
import exec from 'k6/execution'
import http from 'k6/http'

import { AWSConfig, S3Client } from 'https://jslib.k6.io/aws/0.11.0/s3.js'

const awsConfig = new AWSConfig({
    region: __ENV.AWS_REGION,
    accessKeyId: __ENV.AWS_ACCESS_KEY_ID,
    secretAccessKey: __ENV.AWS_SECRET_ACCESS_KEY,
})

const s3 = new S3Client(awsConfig)
const testBucketName = 'test-jslib-aws'
const testInputFileKey = 'productIDs.json'
const testOutputFileKey = `results-${Date.now()}.json`

export async function setup() {
    // If our test bucket does not exist, abort the execution.
    const buckets = await s3.listBuckets()
    if (buckets.filter((b) => b.name === testBucketName).length == 0) {
        exec.test.abort()
    }

    // If our test object does not exist, abort the execution.
    const objects = await s3.listObjects(testBucketName)
    if (objects.filter((o) => o.key === testInputFileKey).length == 0) {
        exec.test.abort()
    }

    // Download the S3 object containing our test data
    const inputObject = await s3.getObject(testBucketName, testInputFileKey)

    // Let's return the downloaded S3 object's data from the
    // setup function to allow the default function to use it.
    return {
        productIDs: JSON.parse(inputObject.data),
    }
}

export default async function (data) {
    // Pick a random product ID from our test data
    const randomProductID = data.productIDs[Math.floor(Math.random() * data.productIDs.length)]

    // Query our ecommerce website's product page using the ID
    const res = await http.asyncRequest(
        'GET',
        `http://your.website.com/product/${randomProductID}/`
    )
    check(res, { 'is status 200': res.status === 200 })
}

export async function handleSummary(data) {
    // Once the load test is over, let's upload the results to our
    // S3 bucket. This is executed after teardown.
    await s3.putObject(testBucketName, testOutputFileKey, JSON.stringify(data))
}

Secrets Manager

Consult the SecretsManagerClient dedicated k6 documentation page for more details on its methods and how to use it.

import exec from 'k6/execution'

import { AWSConfig, SecretsManagerClient } from 'https://jslib.k6.io/aws/0.11.0/secrets-manager.js'

const awsConfig = new AWSConfig(
    __ENV.AWS_REGION,
    __ENV.AWS_ACCESS_KEY_ID,
    __ENV.AWS_SECRET_ACCESS_KEY
)

const secretsManager = new SecretsManagerClient(awsConfig)
const testSecretName = 'jslib-test-secret'
const testSecretValue = 'jslib-test-value'

export default async function () {
    // Let's make sure our test secret is created
    const testSecret = await secretsManager.createSecret(
        testSecretName,
        testSecretValue,
        'this is a test secret, delete me.'
    )

    // List the secrets the AWS authentication configuration
    // gives us access to, and verify the creation was successful.
    const secrets = await secretsManager.listSecrets()
    if (!secrets.filter((s) => s.name === testSecret.name).length == 0) {
        exec.test.abort('test secret not found')
    }

    // Now that we know the secret exist, let's update its value
    const newTestSecretValue = 'new-test-value'
    await secretsManager.putSecretValue(testSecretName, newTestSecretValue)

    // Let's get its value and verify it was indeed updated
    const updatedSecret = await secretsManager.getSecret(testSecretName)
    if (updatedSecret.secretString !== newTestSecretValue) {
        exec.test.abort('unable to update test secret')
    }

    // Finally, let's delete our test secret and verify it worked
    await secretsManager.deleteSecret(updatedSecret.name, { noRecovery: true })
}

SQS

Consult the SQSClient dedicated k6 documentation page for more details on its methods and how to use it.

import { check } from 'k6'
import exec from 'k6/execution'
import http from 'k6/http'

import { AWSConfig, SQSClient } from 'https://jslib.k6.io/aws/0.11.0/sqs.js'

const awsConfig = new AWSConfig({
    region: __ENV.AWS_REGION,
    accessKeyId: __ENV.AWS_ACCESS_KEY_ID,
    secretAccessKey: __ENV.AWS_SECRET_ACCESS_KEY,
    sessionToken: __ENV.AWS_SESSION_TOKEN,
})

const sqs = new SQSClient(awsConfig)
const testQueue = 'https://sqs.us-east-1.amazonaws.com/000000000/test-queue'

export default async function () {
    // If our test queue does not exist, abort the execution.
    const queuesResponse = await sqs.listQueues()
    if (queuesResponse.queueUrls.filter((q) => q === testQueue).length == 0) {
        exec.test.abort()
    }

    // Send message to test queue
    await sqs.sendMessage(testQueue, JSON.stringify({ value: '123' }))

    // Send message with attributes to test queue
    await sqs.sendMessage(testQueue, JSON.stringify({ value: '123' }), {
        messageAttributes: {
            'my-attribute': {
                type: 'String',
                value: 'my-attribute-value'
            }
        }
    })
}

KMS

Consult the KMS dedicated k6 documentation page for more details on its methods and how to use it.

import exec from 'k6/execution'

import { AWSConfig, KMSClient } from '../dist/kms.js'

const awsConfig = new AWSConfig({
    region: __ENV.AWS_REGION,
    accessKeyId: __ENV.AWS_ACCESS_KEY_ID,
    secretAccessKey: __ENV.AWS_SECRET_ACCESS_KEY,
})

const KMS = new KMSClient(awsConfig)
const KeyId = 'alias/TestKey'

export default async function () {
    // Currently, the keys need to be created before hand

    // First let's list the keys we have available
    const keys = await KMS.listKeys()
    if (keys.length == 0) {
        exec.test.abort('test keys not found')
    }

    const key = keys.filter((s) => s.keyId === KeyId)
    if (!key) {
        exec.test.abort('target test key not found')
    }

    //Run generateDataKey call on the key, with the default 32 byte size
    const dataKey = await KMS.generateDataKey(key.keyId)
    if (dataKey.ciphertextBlobText == undefined) {
        exec.test.abort('data key not generated')
    }
}

SSM

Consult the SystemsManagerClient dedicated k6 documentation page for more details on its methods and how to use it.

import exec from 'k6/execution'

import { AWSConfig, SystemsManagerClient } from 'https://jslib.k6.io/aws/0.11.0/ssm.js'

const awsConfig = new AWSConfig({
    region: __ENV.AWS_REGION,
    accessKeyId: __ENV.AWS_ACCESS_KEY_ID,
    secretAccessKey: __ENV.AWS_SECRET_ACCESS_KEY,
    sessionToken: __ENV.AWS_SESSION_TOKEN,
})

const systemsManager = new SystemsManagerClient(awsConfig)
const testParameterName = 'jslib-test-parameter'
const testParameterValue = 'jslib-test-value'
const testParameterSecretName = 'jslib-test-parameter-secret'
// this value was created with --type SecureString
const testParameterSecretValue = 'jslib-test-secret-value'

export default async function () {
    // Currently the parameter needs to be created before hand

    // Let's get its value
    // getParameter returns an parameter object: e.g. {parameter: {name: string, value: string...}}
    const parameter = await systemsManager.getParameter(testParameterName)
    if (parameter.value !== testParameterValue) {
        exec.test.abort('test parameter not found')
    }

    // Let's get the secret value with decryption
    // destructure the parameter object to get to the values you want
    const {
        parameter: { value: encryptedParameterValue },
    } = systemsManager.getParameter(testParameterSecretName, true)
    if (encryptedParameterValue !== testParameterSecretValue) {
        exec.test.abort('encrypted test parameter not found')
    }
}

Kinesis

Consult the KinesisClient dedicated k6 documentation page for more details on its methods and how to use it.

import exec from 'k6/execution'
import encoding from 'k6/encoding'
import { fail } from 'k6'

import { AWSConfig, KinesisClient } from 'https://jslib.k6.io/aws/0.11.0/kinesis.js'

const awsConfig = new AWSConfig({
    region: __ENV.AWS_REGION,
    accessKeyId: __ENV.AWS_ACCESS_KEY_ID,
    secretAccessKey: __ENV.AWS_SECRET_ACCESS_KEY,
    sessionToken: __ENV.AWS_SESSION_TOKEN,
})
const kinesis = new KinesisClient(awsConfig)

export default async function () {
    // List the streamds the AWS authentication configuration
    // gives us access to.
    const streams = await kinesis.listStreams()

    if (streams.streamNames.filter((s) => s === dummyStream).length == 0) {
        fail(`Stream ${dummyStream} does not exist`)
    }

    // Create our test stream
    await kinesis.createStream(dummyStream, {
        shardCount: 10,
        streamModeDetails: {
            streamMode: 'PROVISIONED',
        },
    })

    // Put some records in it
    const records = await kinesis.putRecords({
        streamName: dummyStream,
        Records: [
            {
                data: encoding.b64encode(JSON.stringify({ this: 'is', a: 'test' })),
                partitionKey: 'partitionKey1',
            },
            {
                data: encoding.b64encode(JSON.stringify([{ this: 'is', second: 'test' }])),
                partitionKey: 'partitionKey2',
            },
        ],
    })

    // List the streams' shards
    const shards = await kinesis.listShards(dummyStream).shards.map((shard) => shard.id)

    // For each shard, read all the data
    shards.map(async (shard) => {
        const iterator = await kinesis.getShardIterator(dummyStream, shardId, `TRIM_HORIZON`)

        while (true) {
            const res = await kinesis.getRecords({ shardIterator: iterator })
            iterator = res.nextShardIterator

            if (!res.millisBehindLatest || res.millisBehindLatest == `0`) {
                break
            }
        }
    })

    // Delete the stream
    await kinesis.deleteStream({ streamName: dummyStream })
}

EventBridge

Consult the EventBridgeClient dedicated k6 documentation page for more details on its methods and how to use it.

import { AWSConfig, EventBridgeClient } from 'https://jslib.k6.io/aws/0.11.0/event-bridge.js'

const awsConfig = new AWSConfig({
    region: __ENV.AWS_REGION,
    accessKeyId: __ENV.AWS_ACCESS_KEY_ID,
    secretAccessKey: __ENV.AWS_SECRET_ACCESS_KEY,
    sessionToken: __ENV.AWS_SESSION_TOKEN,
})

const eventBridge = new EventBridgeClient(awsConfig)

export default async function () {
    const eventDetails = {
        Source: 'my.custom.source',
        Detail: { key1: 'value1', key2: 'value2' },
        DetailType: 'MyDetailType',
        Resources: ['arn:aws:resource1'],
    }

    const input = {
        Entries: [eventDetails],
    }

    try {
        await eventBridge.putEvents(input)
    } catch (error) {
        console.error(`Failed to put events: ${error.message}`)
    }
}

Lambda

Consult the LambdaClient dedicated k6 documentation page for more details on its methods and how to use it.

import { AWSConfig, LambdaClient } from 'https://jslib.k6.io/aws/0.11.0/lambda.js'
import { check } from 'k6';

const awsConfig = new AWSConfig({
    region: __ENV.AWS_REGION,
    accessKeyId: __ENV.AWS_ACCESS_KEY_ID,
    secretAccessKey: __ENV.AWS_SECRET_ACCESS_KEY,
    sessionToken: __ENV.AWS_SESSION_TOKEN,
})

const lambdaClient = new LambdaClient(awsConfig)

export default async function () {
    const response = await lambdaClient.invoke('add-numbers', JSON.stringify({x: 1, y: 2}))

    check(response, {
        'status is 200': (r) => r.statusCode === 200,
        'payload is 3': (r) => r.payload === 3,
    })
}

Development

Contributing

The scope of this library has been kept minimal and limited to the use cases we, and our clients, need. If the library doesn't cater to your needs just yet, feel free to add it, and open a pull-request. We welcome contributions.

Build

# Install the local dependencies
npm install

# Bundle it in preparation for a publication
npm run webpack

# Run the tests
npm test

For further details, take a look at CONTRIBUTING.md.

Maintainers

k6-jslib-aws is developped by the k6 core development team. Maintainers of this jslib specifically are the following:

• Théo Crevon, core k6 developer @oleiade