Shows how to use the AWS SDK for JavaScript (v3) to work with AWS Lambda.

Lambda allows you to run code without provisioning or managing servers.

• Running this code might result in charges to your AWS account. For more details, see AWS Pricing and Free Tier.
• Running the tests might result in charges to your AWS account.
• We recommend that you grant your code least privilege. At most, grant only the minimum permissions required to perform the task. For more information, see Grant least privilege.
• This code is not tested in every AWS Region. For more information, see AWS Regional Services.

For prerequisites, see the README in the javascriptv3 folder.

• Hello Lambda (ListFunctions)

Code examples that show you how to perform the essential operations within a service.

• Learn the basics

Code excerpts that show you how to call individual service functions.

• CreateFunction
• DeleteFunction
• GetFunction
• Invoke
• ListFunctions
• UpdateFunctionCode
• UpdateFunctionConfiguration

Code examples that show you how to accomplish a specific task by calling multiple functions within the same service.

• Automatically confirm known users with a Lambda function

Note: All code examples are written in ECMAscript 6 (ES6). For guidelines on converting to CommonJS, see JavaScript ES6/CommonJS syntax.

Run a single action

node ./actions/<fileName>

Run a scenario

Most scenarios can be run with the following command:

node ./scenarios/<fileName>

Run with options

Some actions and scenarios can be run with options from the command line:

node ./scenarios/<fileName> --option1 --option2

util.parseArgs is used to configure these options. For the specific options available to each script, see the parseArgs usage for that file.

This example shows you how to get started using Lambda.

node ./hello.js

This example shows you how to do the following:

• Create an IAM role and Lambda function, then upload handler code.
• Invoke the function with a single parameter and get results.
• Update the function code and configure with an environment variable.
• Invoke the function with new parameters and get results. Display the returned execution log.
• List the functions for your account, then clean up resources.

This example shows you how to automatically confirm known Amazon Cognito users with a Lambda function.

• Configure a user pool to call a Lambda function for the PreSignUp trigger.
• Sign up a user with Amazon Cognito.
• The Lambda function scans a DynamoDB table and automatically confirms known users.
• Sign in as the new user, then clean up resources.

⚠ Running tests might result in charges to your AWS account.

To find instructions for running these tests, see the README in the javascriptv3 folder.

• Lambda Developer Guide
• Lambda API Reference
• SDK for JavaScript (v3) Lambda reference

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SPDX-License-Identifier: Apache-2.0