Private/Invoke-AzureADGraphRequest.ps1
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function Invoke-AzureADGraphRequest { <# .SYNOPSIS Perform a GET method call to Azure AD Graph API. .DESCRIPTION Perform a GET method call to Azure AD Graph API. .NOTES Author: Nickolaj Andersen Contact: @NickolajA Created: 2020-05-26 Updated: 2023-09-04 Version history: 1.0.0 - (2020-05-26) Function created 1.0.1 - (2023-01-23) Improved the handling of error response body depending on PSEdition 1.0.2 - (2023-09-04) Updated with correct variable referencing the stored access token, which fixes issue #108 #> param( [parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string]$Resource, [parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [ValidateSet("GET")] [string]$Method ) try { # Construct full URI $GraphURI = "https://graph.microsoft.com/v1.0/$($Resource)" Write-Verbose -Message "$($Method) $($GraphURI)" # Call Graph API and get JSON response switch ($Method) { "GET" { $GraphResponse = Invoke-RestMethod -Uri $GraphURI -Headers $Global:AuthenticationHeader -Method $Method -ErrorAction "Stop" -Verbose:$false } } return $GraphResponse } catch [System.Exception] { # Construct stream reader for reading the response body from API call depending on PSEdition value switch ($PSEdition) { "Desktop" { # Construct stream reader for reading the response body from API call $ResponseBody = Get-ErrorResponseBody -Exception $_.Exception } "Core" { $ResponseBody = $_.ErrorDetails.Message } } # Handle response output and error message Write-Output -InputObject "Response content:`n$ResponseBody" Write-Warning -Message "Request to $($GraphURI) failed with HTTP Status $($_.Exception.Response.StatusCode) and description: $($_.Exception.Response.StatusDescription)" } } |