Assert-JsonValidity.psm1
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<# .SYNOPSIS Takes a JSON object and or string and verifies its valid and converts it to a usable object .DESCRIPTION Takes a JSON object and or string and verifies its valid and converts it to a usable object This was created in order to fix an issue with Azure Automation Accounts which have a known bug with Powershell 7.1 and runbooks which are called via WebHooks. This fixes the broken JSON that is passed to it (such as $RecoveryPlanContext Variablepassed by ASR) .NOTES ┌─┐┬─┐┌─┐┌┬┐┌─┐┬─┐┌─┐ ┌┬┐┌─┐┌─┐┬ ┬┌┐┌┌─┐┬ ┌─┐┌─┐┬┌─┐┌─┐ ┬ ┬ ┌─┐ ├─┘├┬┘│ │ │ ├┤ ├┬┘├─┤ │ ├┤ │ ├─┤││││ ││ │ ││ ┬│├┤ └─┐ │ │ │ ┴ ┴└─└─┘ ┴ └─┘┴└─┴ ┴ ┴ └─┘└─┘┴ ┴┘└┘└─┘┴─┘└─┘└─┘┴└─┘└─┘ ┴─┘┴─┘└─┘ # Copyright (c) Protera Technologies LLC. All rights reserved. # Author Cody.Diehl|Protera Technologies LLC Email c.diehl@protera.com Create 05-20-2022 13:31:20 Modify 05-26-2022 21:31:19 Version v0.9.1 05-20-2022 - initial function creation for gzip decompress base64 decoding - Cody Diehl 05-26-2022 - Configured as a Module to post on PowerShell Gallery for Azure Automation - Cody Diehl #> # Validate JSON Parameter passed to the runbook to ensure there is no errors function Assert-JsonValidity() { # Workaround for Powershell 7.1 as there is known issue causing Webhook invocation to break JSON, so lets fix it without breaking it in future [CmdletBinding()] Param( [Parameter(Mandatory = $True, ValueFromPipeline = $True, ValueFromPipelinebyPropertyName = $True)] $Json ) # Checks if the content is valid json already, or if not then will run string replacement on it $ValidateJson = $Json | Test-Json -ErrorAction SilentlyContinue if (-Not ($ValidateJson)) { $Json = $Json -replace ',', '","' ` -replace ':', '":"' ` -replace '}', '"}' ` -replace '{', '{"' ` -replace ':"{', ':{' ` -replace '"}', '}' ` -replace '\/}', '/"}' ` -replace '}",', '},' # after string replace runs to check if its valid now if not then either another missing replace is needed or its not JSON $ValidateJson = $Json | Test-Json -ErrorAction SilentlyContinue if ($ValidateJson) { Write-Verbose -Message "`$Json is valid JSON" Write-Verbose -Message "`$Json:`n$Json`n" $Json = $Json | ConvertFrom-Json return $Json } else { Write-Error -Message "`$Json is not a valid, ensure there is no missing replacements still needed.`n`n`$Json:`n$Json`n`nError:`n$_" -ErrorAction Stop } } # Test returned valid json so ConvertFrom-Json makes it a usable object same as it was in 5.1 else { Write-Verbose -Message "`$Json is Valid JSON and converting to an Object" $Json = $Json | ConvertFrom-Json return $Json } } Export-ModuleMember -Function Assert-JsonValidity |