This example application does the following:

1.Creates an AWS Identity and Access Management (IAM) role that will be assumed by the functions we create.

2.Attaches an IAM role policy that has Lambda permissions.

3.Creates a Lambda function that increments the value passed to it.

4.Calls the increment function and passes a value.

5.Updates the code so that the function is a simple calculator.

6.Calls the calculator function with the values entered.

7.Deletes the Lambda function.

8.Detaches the IAM role policy.

9.Deletes the IAM role.

{
    "FunctionName": "LambdaExample",
    "Handler": "LambdaIncrement::LambdaIncrement.Function::FunctionHandler",
    "UpdatedHandler": "LambdaCalculator::LambdaCalculator.Function::FunctionHandler",
    "BucketName": "doc-example-bucketluiscocoenriquez",
    "IncrementKey": "LambdaIncrement.zip",
    "CalculatorKey": "LambdaCalculator.zip",
    "RoleName": "lambda-support",
    "PolicyArn": "arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
}

Before you can run the getting started with Lambda scenario, you must upload the following two files to an Amazon Simple Storage Service (Amazon S3) bucket that you own. In the above settings.json file we set the "BucketName" for the S3 bucket:

• LambdaIncrement.zip
• LambdaCalculator.zip

Shows how to use the AWS SDK for .NET 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.
• 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 dotnetv3 folder.

• Hello Lambda (ListFunctions)

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

• Create a function (CreateFunction)
• Delete a function (DeleteFunction)
• Get a function (GetFunction)
• Invoke a function (Invoke)
• List functions (ListFunctions)
• Update function code (UpdateFunctionCode)
• Update function configuration (UpdateFunctionConfiguration)

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

• Get started with functions

For general instructions to run the examples, see the README in the dotnetv3 folder.

Some projects might include a settings.json file. Before compiling the project, you can change these values to match your own account and resources. Alternatively, add a settings.local.json file with your local settings, which will be loaded automatically when the application runs.

After the example compiles, you can run it from the command line. To do so, navigate to the folder that contains the .csproj file and run the following command:

dotnet run

Alternatively, you can run the example from within your IDE.

This example shows you how to get started using Lambda.

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.

Before you can run the getting started with Lambda scenario, you must upload the following two files to an Amazon Simple Storage Service (Amazon S3) bucket that you own:

• LambdaIncrement.zip
• LambdaCalculator.zip

The scenario includes the following settings in settings.json:

• FunctionName - A name for the Lambda function.
• Handler - "LambdaIncrement::LambdaIncrement.Function::FunctionHandler"
• UpdatedHandler - "LambdaCalculator::LambdaCalculator.Function::FunctionHandler"
• BucketName - The name of the bucket containing the .zip files for the sample functions.
• IncrementKey - "LambdaIncrement.zip",
• CalculatorKey - "LambdaCalculator.zip",
• RoleName - The name of the IAM role that gives the scenario permissions to access Lambda.
• PolicyArn - The Amazon Resource Name (ARN) of a policy giving the IAM role permissions to access Lambda.

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

To find instructions for running these tests, see the README in the dotnetv3 folder.

• Lambda Developer Guide
• Lambda API Reference
• SDK for .NET Lambda reference

Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.

SPDX-License-Identifier: Apache-2.0