[AppService] az webapp status: Add new command to show per-instance Site Runtime Status

[HaripriyaMehta]

Related command

az webapp status

Description

Adds a new az webapp status command that surfaces the per-instance Site Runtime Status
for a web app by calling the siteStatus ARM API. Supports:

• --slot to target a deployment slot
• --instance to filter to a single instance (run az webapp list-instances to discover IDs)

Output is rendered as a table via a transformer, with error columns shown only when an
instance reports a lastError.

Screenshots of Output:

Testing

• Added WebappStatusScenarioTest (recorded scenario test, NODE|22-lts Linux app).
• Added TestWebappStatusMocked with 5 mocked unit tests covering slot/instance URL
  construction, output formatting, and the missing-instance error path.
• azdev style appservice → PASSED (pylint + flake8)
• azdev linter --include-whl-extensions appservice → No violations found
• azdev test test_webapp_status TestWebappStatusMocked → 6 passed

History Notes

[AppService] az webapp status: Add new command to show per-instance Site Runtime Status

[azure-client-tools-bot-prd]

Validation for Azure CLI Full Test Starting...

Thanks for your contribution!

[azure-client-tools-bot-prd]

Hi @HaripriyaMehta,
Since the current milestone time is less than 7 days, this pr will be reviewed in the next milestone.

[azure-client-tools-bot-prd]

Validation for Breaking Change Starting...

Thanks for your contribution!

[yonzhan]

AppService

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[aamos-company]

This takes a slot, but the actual command does not. I do think the slot param should be present

[HaripriyaMehta]

Is this about _params.py and there not being a slot parameter in az webapp status? I thought the slot parameter should be inherited from az webapp the way resource group or name are? Or am I misunderstanding something?

[vageorge00]

I think the slot param would still work if unlisted as it is inherited (might want to test this to be 100%)
But I also see some other functions in _params.py, do list it, maybe as a style?

    with self.argument_context('webapp list-instances') as c:
        c.argument('name', arg_type=webapp_name_arg_type, id_part=None)
        c.argument('slot', options_list=['--slot', '-s'], help='Name of the web app slot. Default to the productions slot if not specified.')

[vageorge00]

I see there's a lot of isinstance type checks here, do we also need to check if each item in properties list is a dict? Up to you, just asking because we seem to be checking types a lot.

item.get('lastError') for item in items (line 2495) is assuming item is a dict I believe

[vageorge00]

Just something from copilot, have you confirmed resource_manager does not end in '/' so we dont get resource_manager// ?

[vageorge00]

Thank you for the comments!

[vageorge00]

Do we not want to log status tip if RuntimeFailed?