Using the Lambda context object to retrieve PowerShell function information - Amazon Lambda
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Using the Lambda context object to retrieve PowerShell function information

When Lambda runs your function, it passes context information by making a $LambdaContext variable available to the handler. This variable provides methods and properties with information about the invocation, function, and execution environment.

Context properties

  • FunctionName – The name of the Lambda function.

  • FunctionVersion – The version of the function.

  • InvokedFunctionArn – The Amazon Resource Name (ARN) that's used to invoke the function. Indicates if the invoker specified a version number or alias.

  • MemoryLimitInMB – The amount of memory that's allocated for the function.

  • AwsRequestId – The identifier of the invocation request.

  • LogGroupName – The log group for the function.

  • LogStreamName – The log stream for the function instance.

  • RemainingTime – The number of milliseconds left before the execution times out.

  • Identity – (mobile apps) Information about the Amazon Cognito identity that authorized the request.

  • ClientContext – (mobile apps) Client context that's provided to Lambda by the client application.

  • Logger – The logger object for the function.

The following PowerShell code snippet shows a simple handler function that prints some of the context information. 

#Requires -Modules @{ModuleName='AWSPowerShell.NetCore';ModuleVersion='3.3.618.0'}
Write-Host 'Function name:' $LambdaContext.FunctionName
Write-Host 'Remaining milliseconds:' $LambdaContext.RemainingTime.TotalMilliseconds
Write-Host 'Log group name:' $LambdaContext.LogGroupName
Write-Host 'Log stream name:' $LambdaContext.LogStreamName