[Containerapp] az containerapp env create: Pre-announce future logs destination default change

src/azure-cli/azure/cli/command_modules/containerapp/_breaking_change.py

@@ -0,0 +1,15 @@
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+from azure.cli.core.breaking_change import register_default_value_breaking_change
+
+register_default_value_breaking_change(
+    'containerapp env create',
+    '--logs-destination',
+    'log-analytics',
+    'azure-monitor',
+    target_version=None,
+    doc_link='https://github.com/Azure/azure-cli/pull/34228',
+)

src/azure-cli/azure/cli/command_modules/containerapp/tests/latest/test_containerapp_breaking_change.py

@@ -0,0 +1,33 @@
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for license information.
+# --------------------------------------------------------------------------------------------
+
+import inspect
+import runpy
+import unittest
+from unittest import mock
+
+from azure.cli.core.breaking_change import upcoming_breaking_changes
+from azure.cli.core.mock import DummyCli
+from azure.cli.command_modules.containerapp.custom import create_managed_environment
+
+
+class ContainerappBreakingChangeTest(unittest.TestCase):
+    def test_logs_destination_preannouncement(self):
+        with mock.patch.dict(upcoming_breaking_changes, clear=True):
+            runpy.run_module('azure.cli.command_modules.containerapp._breaking_change')
+            changes = upcoming_breaking_changes['containerapp env create']
+            self.assertEqual(len(changes), 1)
+            change = changes[0]
+            self.assertEqual(change.current_default, 'log-analytics')
+            self.assertEqual(change.new_default, 'azure-monitor')
+            self.assertIn('--logs-destination', change.message)
+            self.assertIn('in a future release', change.message)
+            self.assertIn('https://github.com/Azure/azure-cli/pull/34228', change.message)
+            self.assertTrue(change.to_tag(DummyCli()).always_display)
+
+        self.assertEqual(
+            inspect.signature(create_managed_environment).parameters['logs_destination'].default,
+            'log-analytics',
+        )