Azure CLI 2.40.0 breaks stdin passing on PowerShell

Describe the bug

We’re executing an Azure CLI extension in PowerShell which requires interactive input, and that input is passed through stdin using the following code:

$user_in = "..."
$user_in | az arcappliance createconfig vmware --resource-group $resourceGroup --name $resourceName --location $location

This was working fine until the latest Azure CLI version (2.40.0).

Command Name az arcappliance createconfig vmware Extension Name: arcappliance. Version: 0.2.16.

(note: we are using an older arcappliance extension version for testing purposes)

Errors:

ERROR: The command failed with an unexpected error. Here is the traceback:
ERROR: EOF when reading a line
Traceback (most recent call last):
  File "C:\hostedtoolcache\windows\Python\3.7.9\x64\lib\site-packages\knack\cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
  File "C:\hostedtoolcache\windows\Python\3.7.9\x64\lib\site-packages\azure\cli\core\commands\__init__.py", line 663, in execute
    raise ex
  File "C:\hostedtoolcache\windows\Python\3.7.9\x64\lib\site-packages\azure\cli\core\commands\__init__.py", line 726, in _run_jobs_serially
    results.append(self._run_job(expanded_arg, cmd_copy))
  File "C:\hostedtoolcache\windows\Python\3.7.9\x64\lib\site-packages\azure\cli\core\commands\__init__.py", line 697, in _run_job
    result = cmd_copy(params)
  File "C:\hostedtoolcache\windows\Python\3.7.9\x64\lib\site-packages\azure\cli\core\commands\__init__.py", line 333, in __call__
    return self.handler(*args, **kwargs)
  File "C:\hostedtoolcache\windows\Python\3.7.9\x64\lib\site-packages\azure\cli\core\commands\command_operation.py", line 121, in handler
    return op(**command_args)
  File "C:\Program Files\Common Files\AzureCliExtensionDirectory\arcappliance\azext_arcappliance\custom.py", line 193, in create_config
    provider.create_config(infra_config_path, working_dir)
  File "C:\Program Files\Common Files\AzureCliExtensionDirectory\arcappliance\azext_arcappliance\pkg\providers\vmware\provider.py", line 109, in create_config
    vsphere_configuration = self.__prep_for_kva(None, credentials_only=True)
  File "C:\Program Files\Common Files\AzureCliExtensionDirectory\arcappliance\azext_arcappliance\pkg\providers\vmware\provider.py", line 62, in __prep_for_kva
    self.vsphere_credentials = prompt_vsphere_credentials()
  File "C:\Program Files\Common Files\AzureCliExtensionDirectory\arcappliance\azext_arcappliance\pkg\providers\vmware\provider.py", line 176, in prompt_vsphere_credentials
    credentials_address = prompt_operations.prompt_input_string(prompt_messages.VSPHERE_ADDRESS)
  File "C:\Program Files\Common Files\AzureCliExtensionDirectory\arcappliance\azext_arcappliance\pkg\prompt\operations.py", line 39, in prompt_input_string
    user_input = input(prompt_msg)
EOFError: EOF when reading a line

To Reproduce:

Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

• Use Azure CLI 2.40.0
• Install arcappliance extension: az extension add --name arcappliance --version 0.2.16
• PowerShell: "your_values_here" | az arcappliance createconfig vmware --resource-group {} --name {} --location {}

Expected Behavior

The input function should be able to use the data passed through stdin.

Environment Summary

Windows-10-10.0.22000-SP0
Python 3.10.5
Installer: PIP

azure-cli 2.40.0

Extensions:
arcappliance 0.2.16

Dependencies:
msal 1.18.0b1
azure-mgmt-resource 21.1.0b1

Additional Context

I think this might be caused by the following PR that got released with 2.40.0: https://github.com/Azure/azure-cli/pull/23514

[jiasli]

@jiasli Jiashuo Li FTE, Is it safe to remove az.ps1 until the issue is fixed as a workaround?

Yes. We will rollback the change.

[yonzhan]

This fix is already shipped today.