Parts of deprecated msrestazure aren't ported to any other library

[gabuniag]

Issue:

The msrestazure package has been deprecated for quite some time:
This package is deprecated and no longer receives updates The authentication part of this package has been moved to [azure-identity](https://pypi.org/project/azure-identity/) The other parts of this library are covered by [azure-mgmt-core](https://pypi.org/project/azure-mgmt-core/)
https://github.com/Azure/msrestazure-for-python

This package contains a "Cloud" class, which is necessary to work with various government clouds:
https://github.com/Azure/msrestazure-for-python/blob/8e3def8c9927a349596e575de93df76de7a3a2b6/msrestazure/azure_cloud.py#L113
and its instances that have various URL-s hardcoded: https://github.com/Azure/msrestazure-for-python/blob/8e3def8c9927a349596e575de93df76de7a3a2b6/msrestazure/azure_cloud.py#L169

Per learning.microsoft.com, those class instances are used to connect to a government cloud: https://learn.microsoft.com/en-us/azure/developer/python/sdk/azure-sdk-sovereign-domain

Such a class, that would provide similar constants is not implemented elsewhere in the Azure ecosystem.

Suggested Solution

Code found in https://github.com/Azure/msrestazure-for-python/blob/master/msrestazure/azure_cloud.py should be ported to azure-identity. This will allow developers to completely deprecate msrestazure from their codebase.

Why this is important

Since there is no alternative authoritative source of the constants found in AZURE_PUBLIC_CLOUD, AZURE_CHINA_CLOUD, AZURE_US_GOV_CLOUD, AZURE_GERMAN_CLOUD, various azure-related projects need to either:
Depend on a deprecated project
or:
Implement "Cloud" class and its instances locally, thus having to maintain it locally.
Both solutions seem bad.

[kristapratico]

Thanks for your issue @gabuniag, we'll get back to you asap.

[lmazuel]

This is a duplicate of #5561 in the intent, we didn't finish the design of this indeed.

CC @johanste

[tbennett0]

Hi @kristapratico @lmazuel @johanste, is resolution of this issue still in the plans? Thanks!

[lmazuel]

@tbennett0 , @xiangyan99 is working on this as we speak

[JimacoMS4]

Has there been any progress here? Please see the documentation issue in which it's mentioned above. Thanks!

[JimacoMS4]

@lmazuel -- are there any updates here? Thanks!

[lmazuel]

We got sidetracked, but @xiangyan99 is still working on this as available.

[karpikpl]

hate to ask again but this has been worked on since August? is there a planned release date?

[rr-peter]

Any chances to get this moved to supported lib?

[xiangyan99]

Here is an update:

we added the list of the supported clouds in https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/core/azure-core/azure/core/_azure_clouds.py

and the mapping from azure_cloud to the resource_manager & credential_scopes information in
https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/core/azure-mgmt-core/azure/mgmt/core/tools.py#L224

We will add the mapping from azure_cloud to the authority information in azure-identity library and will keep you updated.