Enabling dapr on an existing container app fails consistently

[calleo]

• If the issue is to do with Azure CLI 2.0 in-particular, create an issue here at Azure/azure-cli

Related command

az containerapp dapr enable

Extension name (the extension in question)

containerapp 0.3.20

Description of issue (in as much detail as possible)

After creating a container app using az containerapp up I wanted to enable dapr by running az containerapp dapr enable on the same app. This command fails with the following stack trace:

cli.azure.cli.core.azclierror: The command failed with an unexpected error. Here is the traceback:
az_command_data_logger: The command failed with an unexpected error. Here is the traceback:
cli.azure.cli.core.azclierror: 'NoneType' object does not support item assignment
Traceback (most recent call last):
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 663, in execute
    raise ex
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 726, in _run_jobs_serially
    results.append(self._run_job(expanded_arg, cmd_copy))
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 718, in _run_job
    return cmd_copy.exception_handler(ex)
  File "/Users/carl.vander/.azure/cliextensions/containerapp/azext_containerapp/_client_factory.py", line 28, in _polish_bad_errors
    raise ex
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 697, in _run_job
    result = cmd_copy(params)
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 333, in __call__
    return self.handler(*args, **kwargs)
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler
    return op(**command_args)
  File "/Users/carl.vander/.azure/cliextensions/containerapp/azext_containerapp/custom.py", line 2373, in enable_dapr
    containerapp_def['properties']['configuration']['dapr']['appId'] = dapr_app_id
TypeError: 'NoneType' object does not support item assignment
az_command_data_logger: 'NoneType' object does not support item assignment
Traceback (most recent call last):
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 663, in execute
    raise ex
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 726, in _run_jobs_serially
    results.append(self._run_job(expanded_arg, cmd_copy))
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 718, in _run_job
    return cmd_copy.exception_handler(ex)
  File "/Users/carl.vander/.azure/cliextensions/containerapp/azext_containerapp/_client_factory.py", line 28, in _polish_bad_errors
    raise ex
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 697, in _run_job
    result = cmd_copy(params)
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 333, in __call__
    return self.handler(*args, **kwargs)
  File "/opt/homebrew/Cellar/azure-cli/2.44.1/libexec/lib/python3.10/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler
    return op(**command_args)
  File "/Users/carl.vander/.azure/cliextensions/containerapp/azext_containerapp/custom.py", line 2373, in enable_dapr
    containerapp_def['properties']['configuration']['dapr']['appId'] = dapr_app_id
TypeError: 'NoneType' object does not support item assignment

I can see that the cli makes a call to /subscriptions/<subscription-id>/resourceGroups/<resource-group-name>/providers/Microsoft.App/containerApps/<app-id>?api-version=2022-06-01-preview

The response contains the properties.configuration.dapr key, however it is set to null since dapr is not enabled. The cli code has guards in place, but it only checks for the presence of the key and not ensuring that it is not none:

https://github.com/Azure/azure-cli-extensions/blob/main/src/containerapp/azext_containerapp/custom.py#L2369-L2370

---

[yonzhan]

route to CXP team

[navba-MSFT]

@calleo Thanks for reaching out to us and reporting this issue. We are looking into this issue and we will provide an update.