How to list all the functions in an Azure Function App

Question

I can use the PowerShell cmdlet Get-AzureRMResource to list all Azure resources.

Is there a cmdlet that takes a ResourceGroupName and a SiteName and it returns all the functions in that "Site".

Or, a combination of cmdlets that I can use to get these details.

Answer 1

As Fabio Cavalcante said, Azure PowerShell does not support this, you could use Rest API to get it. Here is a example how to get Functions with PowerShell.

#

#get token
$TENANTID="<tenantid>"
$APPID="<application id>"
$PASSWORD="<app password>"
$result=Invoke-RestMethod -Uri https://login.microsoftonline.com/$TENANTID/oauth2/token?api-version=1.0 -Method Post -Body @{"grant_type" = "client_credentials"; "resource" = "https://management.core.windows.net/"; "client_id" = "$APPID"; "client_secret" = "$PASSWORD" }
$token=$result.access_token

##set Header
$Headers=@{
    'authorization'="Bearer $token"
    'host'="management.azure.com"
}

$functions = Invoke-RestMethod  -Uri "https://management.azure.com/subscriptions/<subscriptions id>/resourceGroups/<group name>/providers/Microsoft.Web/sites/<function name>/functions?api-version=2015-08-01"  -Headers $Headers -ContentType "application/json" -Method GET

$functions.value

Answer 2

This is possible using the Get-AzureRmResource cmdlet.

$Params = @{
    ResourceGroupName = $ResourceGroupName
    ResourceType      = 'Microsoft.Web/sites/functions'
    ResourceName      = $AppName
    ApiVersion        = '2015-08-01'
}
Get-AzureRmResource @Params

Answer 3

Not a PowerShell cmdlet, but you can use the ListingFunctions API as described here

Listing functions
get /subscriptions/{sub}/resourceGroups/{rg}/providers/Microsoft.Web/sites/{functionapp}/functions?api-version=2015-08-01

Response:
{
  "value": [
    {
      ...
    }
  ]
}

Answer 4

In 2021, you can use func

func azure functionapp list-functions FUNCTION_NAME

available in azure-functions-core-tools@3