ManagedIdentityCredential throw ClientAuthenticationError instead of CredentialUnavailableError when identity doesn't exist

[evileagle]

• azure-identity:
• 1.3.0:
• Notebook:
• 3.6:

Issue

  from azure.identity import (ChainedTokenCredential, ManagedIdentityCredential,InteractiveBrowserCredential, DeviceCodeCredential)
  credentials = [ManagedIdentityCredential()]   
  credentials.append(InteractiveBrowserCredential())
  credentials.append(DeviceCodeCredential(AZURE_CLIENT_ID))
  ChainedTokenCredential(*credentials).get_token(scope)

Doesn't work in compute vm that doesn't have managed identity. ChainedTokenCredential directly failed when call ManagedIdentityCredential.get_token, didn't try other methods.

Expected behavior
ManagedIdentityCredential should throw CredentialUnavailableError so that ChainedTokenCredential can catch it, and try the next one.

Screenshots
If applicable, add screenshots to help explain your problem.

[chlowell]

Thanks for reporting this! I'll fix it for the next release. If you need a workaround in the meantime, one option is to subclass ChainedTokenCredential to add a special case to get_token (see this gist for an example).

[chlowell]

This is fixed in 1.3.1. Thanks again for opening this issue.