[Container App Job] Fix crash for containerapp job update --no-wait

[cimnine]

Related command

az containerapp job update \
            --name ${{ job.Name }} \
            --resource-group ${{ parameters.ResourceGroupName }} \
            --image ${{ parameters.ContainerRegistryName }}/${{ job.Repository }}:${{ parameters.ImageTag }} \
            --no-wait

Description
It fixes the following crash:

2026-07-28T12:18:42.1518490Z ##[section]Starting: containerappjob:update caj-csx-t-zh-1-cleanup-files
2026-07-28T12:18:42.1523350Z ==============================================================================
2026-07-28T12:18:42.1523463Z Task         : Bash
2026-07-28T12:18:42.1523517Z Description  : Run a Bash script on macOS, Linux, or Windows
2026-07-28T12:18:42.1523601Z Version      : 3.274.1
2026-07-28T12:18:42.1523659Z Author       : Microsoft Corporation
2026-07-28T12:18:42.1523725Z Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/utility/bash
2026-07-28T12:18:42.1523822Z ==============================================================================
2026-07-28T12:18:42.2436757Z Generating script.
2026-07-28T12:18:42.2446049Z ========================== Starting Command Output ===========================
2026-07-28T12:18:42.2453901Z [command]/usr/bin/bash /azp/_temp/6c0482c6-5b76-4f4c-9990-d90ee6a19cef.sh
2026-07-28T12:18:45.7184805Z ERROR: The command failed with an unexpected error. Here is the traceback:
2026-07-28T12:18:45.7212321Z ERROR: argument of type 'NoneType' is not iterable
2026-07-28T12:18:45.7212652Z Traceback (most recent call last):
2026-07-28T12:18:45.7212911Z   File "/opt/az/lib/python3.13/site-packages/knack/cli.py", line 233, in invoke
2026-07-28T12:18:45.7213156Z     cmd_result = self.invocation.execute(args)
2026-07-28T12:18:45.7213422Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/core/commands/__init__.py", line 666, in execute
2026-07-28T12:18:45.7213669Z     raise ex
2026-07-28T12:18:45.7213939Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/core/commands/__init__.py", line 734, in _run_jobs_serially
2026-07-28T12:18:45.7214241Z     results.append(self._run_job(expanded_arg, cmd_copy))
2026-07-28T12:18:45.7214471Z                    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28T12:18:45.7214735Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/core/commands/__init__.py", line 726, in _run_job
2026-07-28T12:18:45.7215001Z     return cmd_copy.exception_handler(ex)
2026-07-28T12:18:45.7215225Z            ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^
2026-07-28T12:18:45.7215722Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/command_modules/containerapp/_client_factory.py", line 28, in _polish_bad_errors
2026-07-28T12:18:45.7216001Z     raise ex
2026-07-28T12:18:45.7216241Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/core/commands/__init__.py", line 703, in _run_job
2026-07-28T12:18:45.7216492Z     result = cmd_copy(params)
2026-07-28T12:18:45.7216742Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/core/commands/__init__.py", line 336, in __call__
2026-07-28T12:18:45.7217025Z     return self.handler(*args, **kwargs)
2026-07-28T12:18:45.7217243Z            ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
2026-07-28T12:18:45.7217519Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/core/commands/command_operation.py", line 120, in handler
2026-07-28T12:18:45.7217819Z     return op(**command_args)
2026-07-28T12:18:45.7218076Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/command_modules/containerapp/custom.py", line 1084, in update_containerappsjob
2026-07-28T12:18:45.7218294Z     return update_containerappsjob_logic(cmd=cmd,
2026-07-28T12:18:45.7218447Z                                          name=name,
2026-07-28T12:18:45.7218695Z     ...<25 lines>...
2026-07-28T12:18:45.7218934Z                                          max_executions=max_executions,
2026-07-28T12:18:45.7219156Z                                          no_wait=no_wait)
2026-07-28T12:18:45.7219452Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/command_modules/containerapp/custom.py", line 1449, in update_containerappsjob_logic
2026-07-28T12:18:45.7219765Z     handle_raw_exception(e)
2026-07-28T12:18:45.7219987Z     ~~~~~~~~~~~~~~~~~~~~^^^
2026-07-28T12:18:45.7220297Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/command_modules/containerapp/_client_factory.py", line 63, in handle_raw_exception
2026-07-28T12:18:45.7220826Z     raise e
2026-07-28T12:18:45.7221140Z   File "/opt/az/lib/python3.13/site-packages/azure/cli/command_modules/containerapp/custom.py", line 1444, in update_containerappsjob_logic
2026-07-28T12:18:45.7221703Z     if "properties" in r and "provisioningState" in r["properties"] and r["properties"]["provisioningState"].lower() == "waiting" and not no_wait:
2026-07-28T12:18:45.7222000Z        ^^^^^^^^^^^^^^^^^
2026-07-28T12:18:45.7222227Z TypeError: argument of type 'NoneType' is not iterable
2026-07-28T12:18:45.7237609Z To check existing issues, please visit: https://github.com/Azure/azure-cli/issues
2026-07-28T12:18:45.8265973Z 
2026-07-28T12:18:45.8303855Z ##[error]Bash exited with code '1'.
2026-07-28T12:18:45.8337872Z ##[section]Finishing: containerappjob:update caj-csx-t-zh-1-cleanup-files

This patch was created with the help of Claude Code:

This confirms the fix is exactly what az containerapp update (the non-job command) already does — the two are structurally identical, and the job version was the outlier.

ContainerAppClient.update (_clients.py:159-160) and ContainerAppsJobClient.update (_clients.py:895-896) both do the same thing: return None when no_wait=True.

 if no_wait:
     return

update_containerapp_logic (regular containerapp update), custom.py:710-715:

 r = ContainerAppClient.update(
     cmd=cmd, resource_group_name=resource_group_name, name=name, container_app_envelope=new_containerapp, no_wait=no_wait)

 if not no_wait and "properties" in r and "provisioningState" in r["properties"] and r["properties"]["provisioningState"].lower() == "waiting":

not no_wait is checked first, so when no_wait=True and r is None, the and chain short-circuits before ever touching r["properties"]. Safe.

update_containerappsjob_logic (containerapp job update), custom.py:1442-1446 — before my fix:

r = ContainerAppsJobClient.update(
    cmd=cmd, resource_group_name=resource_group_name, name=name, containerapp_job_envelope=new_containerappsjob, no_wait=no_wait)

if "properties" in r and "provisioningState" in r["properties"] and r["properties"]["provisioningState"].lower() == "waiting" and not no_wait:

Same None-on-no_wait return, but not no_wait was placed last. With no_wait=True, Python still evaluates "properties" in r on r = None before ever reaching not no_wait — hence TypeError: argument of type 'NoneType' is not iterable, exactly matching the pipeline traceback.

My fix moves not no_wait to the front, at line 1446, making the job command's check byte-for-byte identical in structure to the container-app command's (and to the two other matching sites at custom.py:249 and custom.py:1527). All four now read:

if not no_wait and "properties" in r and "provisioningState" in r["properties"] and r["properties"]["provisioningState"].lower() == "waiting":

So the job path now behaves the same as the already-correct app path under --no-wait.

Testing Guide

This will not crash anymore:

az containerapp job update \
            --name ${{ job.Name }} \
            --resource-group ${{ parameters.ResourceGroupName }} \
            --image ${{ parameters.ContainerRegistryName }}/${{ job.Repository }}:${{ parameters.ImageTag }} \
            --no-wait

History Notes

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[cimnine]

@microsoft-github-policy-service agree company="nxt Engineering GmbH"

[Copilot]

Pull request overview

Fixes a TypeError: argument of type 'NoneType' is not iterable crash in az containerapp job update --no-wait by ensuring the provisioning-state warning check short-circuits before evaluating the response object when no_wait=True.

Changes:

• Reorders the post-update provisioningState == "waiting" check in update_containerappsjob_logic to guard on not no_wait first.
• Adds unit tests to ensure both containerapp update and containerapp job update do not crash under --no-wait and still return the update response when no_wait=False.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/azure-cli/azure/cli/command_modules/containerapp/custom.py	Prevents None response from being evaluated in the provisioning-state check when --no-wait is set.
src/azure-cli/azure/cli/command_modules/containerapp/tests/latest/test_containerapp_update_provisioning_state.py	Adds regression tests covering no_wait=True (no crash) and no_wait=False (returns response) for both app and job update paths.

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