Azure FunctionApps list not returning functions on Scala

Question

On my Azure account, I have setup 2 FunctionApps as myself. I am doing this via the Contributor role. I can view it via the CLI:

az functionapp list --resource-group <my subscription>

I am trying to do the same via a Scala app. The identity has both the Contributor and the Reader roles, so it should be able to read all resources.

      val profile = new AzureProfile(params.azureTenantId, params.azureSubscriptionId, AzureEnvironment.AZURE)
      val credential = params.getCredential()
      val azure = AzureResourceManager.authenticate(credential, profile).withSubscription(params.azureSubscriptionId)

When looking for VMs or VPCs, I get return values. However, when I try to do the same with FunctionApps, I get an empty list. I am expecting the same results as the CLI call:

      val test = azure.functionApps().list().asScala.toList
      logger.error("Test length is "+test.size)

In this case, I end up with an empty list. Both the CLI and the Scala app are using the Contributor / Reader roles, but the Scala app is not returning values.

Am I missing something?

Answer 1

Hi @Joe Devilla

Thank you for reaching out to MS Q&A.

The issue occurred because your Scala app isn’t specifying the resource group when listing the Function Apps. The CLI works because you’re providing the --resource-group parameter.

• To resolve this, use the val functionApps = azure.functionApps().listByResourceGroup(resourceGroup).asScala.toList in your Scala code to list the Azure Function Apps.

Also, ensure that the Reader role is assigned to the Service Principal in the Resource Group.

import com.azure.identity.DefaultAzureCredentialBuilder

import com.azure.resourcemanager.AzureResourceManager

import com.azure.core.management.profile.AzureProfile

import com.azure.core.management.AzureEnvironment

import scala.jdk.CollectionConverters._

object KamApp {

  def main(args: Array[String]): Unit = {

    val tenantId = "<TenantID>"

    val subscriptionId = "<SubscriptionID>"

    val profile = new AzureProfile(tenantId, subscriptionId, AzureEnvironment.AZURE)

    val credential = new DefaultAzureCredentialBuilder().build()

    val azure = AzureResourceManager

      .authenticate(credential, profile)

      .withSubscription(subscriptionId)

    val resourceGroup = "<resourceGroupName>"

    try {

      val functionApps = azure.functionApps().listByResourceGroup(resourceGroup).asScala.toList

      if (functionApps.isEmpty) {

        println(s"No FunctionApps found in resource group: $resourceGroup")

      } else {

        println(s"Function Apps in $resourceGroup:")

        functionApps.foreach(app => println(s"- ${app.name()} (${app.regionName()})"))

      }

    } catch {

      case e: Exception => e.printStackTrace()

    }

  }

}

Hope this helps.

If the answer is helpful, please click Accept Answer and kindly upvote it. If you have any further questions about this answer, please click Comment.