Templates/Blueprints/CloudFormationCustomResource/cloudformationcustomresource.ps1.txt
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# PowerShell script file to be executed as a AWS Lambda function. # # When executing in Lambda the following variables will be predefined. # $LambdaInput - A PSObject that contains the Lambda function input data. # $LambdaContext - An Amazon.Lambda.Core.ILambdaContext object that contains information about the currently running Lambda environment. # # The last item in the PowerShell pipeline will be returned as the result of the Lambda function. # # To include PowerShell modules with your Lambda function, like the AWS.Tools.S3 module, add a "#Requires" statement # indicating the module and version. If using an AWS.Tools.* module the AWS.Tools.Common module is also required. #Requires -Modules @{ModuleName='AWS.Tools.Common';ModuleVersion='4.1.518'} # Uncomment to send the input event to CloudWatch Logs # Write-Host (ConvertTo-Json -InputObject $LambdaInput -Compress -Depth 5) $CFNEvent = if ($null -ne $LambdaInput.Records) { Write-Host 'Message received via SNS - Parsing out CloudFormation event' $LambdaInput.Records[0].Sns.Message } else { Write-Host 'Event received directly from CloudFormation' $LambdaInput } $body = @{ # We'll assume success and overwrite if anything fails in line to avoid code duplication Status = "SUCCESS" Reason = "See the details in CloudWatch Log Stream:`n[Group] $($LambdaContext.LogGroupName)`n[Stream] $($LambdaContext.LogStreamName)" PhysicalResourceId = $LambdaContext.LogStreamName StackId = $CFNEvent.StackId RequestId = $CFNEvent.RequestId LogicalResourceId = $CFNEvent.LogicalResourceId } Write-Host "Processing RequestType [$($CFNEvent.RequestType)]" try { # If you want to return data back to CloudFormation, add the Data property to the body with the value as a hashtable. The hashtable keys will be the retrievable attributes when using Fn::GetAtt against the custom resource in your CloudFormation template: # $body.Data = @{Secret = $null} switch ($CFNEvent.RequestType) { Create { # Add Create request code here } Update { # Add Update request code here } Delete { # Add Delete request code here } } } catch { Write-Error $_ $body.Status = "FAILED" } finally { try { Write-Host "Sending response back to CloudFormation" Invoke-WebRequest -Uri $([Uri]$CFNEvent.ResponseURL) -Method Put -Body $($body | ConvertTo-Json -Depth 5) } catch { Write-Error $_ } } |