{Auth} Add telemetry for use_msal_managed_identity (#31127)

Author: jiasli

src/azure-cli-core/azure/cli/core/_profile.py

@@ -1022,6 +1022,8 @@ def _create_identity_instance(cli_ctx, authority, tenant_id=None, client_id=None
 def _use_msal_managed_identity(cli_ctx):
     # This indicates an Azure Arc-enabled server
     from msal.managed_identity import get_managed_identity_source, AZURE_ARC
+    from azure.cli.core.telemetry import set_use_msal_managed_identity
     # PREVIEW: Use core.use_msal_managed_identity=true to enable managed identity authentication with MSAL
     use_msal_managed_identity = cli_ctx.config.getboolean('core', 'use_msal_managed_identity', fallback=False)
+    set_use_msal_managed_identity(use_msal_managed_identity)
     return use_msal_managed_identity or get_managed_identity_source() == AZURE_ARC

src/azure-cli-core/azure/cli/core/telemetry.py

@@ -78,6 +78,7 @@ def __init__(self, correlation_id=None, application=None):
         self.enable_broker_on_windows = None
         self.msal_telemetry = None
         self.login_experience_v2 = None
+        self.use_msal_managed_identity = None
 
     def add_event(self, name, properties):
         for key in self.instrumentation_key:
@@ -234,6 +235,7 @@ def _get_azure_cli_properties(self):
         set_custom_properties(result, 'EnableBrokerOnWindows', str(self.enable_broker_on_windows))
         set_custom_properties(result, 'MsalTelemetry', self.msal_telemetry)
         set_custom_properties(result, 'LoginExperienceV2', str(self.login_experience_v2))
+        set_custom_properties(result, 'UseMsalManagedIdentity', str(self.use_msal_managed_identity))
 
         return result
 
@@ -470,6 +472,7 @@ def set_region_identified(region_input, region_identified):
     _session.region_identified = region_identified
 
 
+# region authentication-related
 @decorators.suppress_all_exceptions()
 def set_broker_info(enable_broker_on_windows):
     # Log the value of `enable_broker_on_windows`
@@ -487,6 +490,12 @@ def set_login_experience_v2(login_experience_v2):
     _session.login_experience_v2 = login_experience_v2
 
 
+@decorators.suppress_all_exceptions()
+def set_use_msal_managed_identity(use_msal_managed_identity):
+    _session.use_msal_managed_identity = use_msal_managed_identity
+# endregion
+
+
 @decorators.suppress_all_exceptions()
 def set_user_agent(user_agent):
     if user_agent: