Update debug-migration function changes to be backwards-compatible.

awscli/customizations/globalargs.py

@@ -98,7 +98,7 @@ def resolve_cli_connect_timeout(parsed_args, session, **kwargs):
     arg_name = 'connect_timeout'
     _resolve_timeout(session, parsed_args, arg_name)
 
-def detect_migration_breakage(parsed_args, remaining_args, session, **kwargs):
+def detect_migration_breakage(parsed_args, session, remaining_args, **kwargs):
     if not resolve_v2_debug_mode(parsed_args):
         return
     region = parsed_args.region or session.get_config_variable('region')
@@ -174,7 +174,11 @@ def detect_migration_breakage(parsed_args, remaining_args, session, **kwargs):
             '#cliv2-migration-profile-plugins.\n',
             out_file=sys.stderr
         )
-    if parsed_args.command == 'ecr' and remaining_args[0] == 'get-login':
+    if (
+            parsed_args.command == 'ecr' and
+            remaining_args is not None and
+            remaining_args[0] == 'get-login'
+    ):
         uni_print(
             '\nAWS CLI v2 UPGRADE WARNING: The `ecr get-login` command has '
             'been removed in AWS CLI v2. You must use `ecr get-login-password` '
@@ -189,6 +193,7 @@ def detect_migration_breakage(parsed_args, remaining_args, session, **kwargs):
         working_param = working_split[2]
         if (
                 parsed_args.command == working_service
+                and remaining_args is not None
                 and remaining_args[0] == working_cmd
                 and f"--{working_param}" in remaining_args
         ):

awscli/customizations/scalarparse.py

@@ -49,7 +49,7 @@ def iso_format(value):
     return parse_timestamp(value).isoformat()
 
 
-def add_timestamp_parser(session, v2_debug):
+def add_timestamp_parser(session, v2_debug=False):
     factory = session.get_component('response_parser_factory')
     print_v2_debug_warnings = v2_debug
     try:
@@ -112,7 +112,7 @@ def identity_with_warning(x):
     factory.set_parser_defaults(timestamp_parser=timestamp_parser)
 
 
-def add_scalar_parsers(session, parsed_args, **kwargs):
+def add_scalar_parsers(session, parsed_args=None, **kwargs):
     factory = session.get_component('response_parser_factory')
     factory.set_parser_defaults(blob_parser=identity)
     add_timestamp_parser(session, resolve_v2_debug_mode(parsed_args))

awscli/paramfile.py

@@ -169,7 +169,7 @@ def __init__(self, prefixes=None):
             prefixes.update(REMOTE_PREFIX_MAP)
         self._prefixes = prefixes
 
-    def __call__(self, event_name, param, value, parsed_globals, **kwargs):
+    def __call__(self, event_name, param, value, parsed_globals=None, **kwargs):
         """Handler that supports param values from URIs."""
         cli_argument = param
         qualified_param_name = '.'.join(event_name.split('.')[1:])

awscli/utils.py

@@ -137,6 +137,8 @@ def find_service_and_method_in_event_name(event_name):
 def resolve_v2_debug_mode(args):
     # Resolve whether v2-debug mode is enabled,
     # following the correct precedence order.
+    if args is None:
+        return False
     if getattr(args, 'v2_debug', False):
         return True
     if os.environ.get('AWS_CLI_UPGRADE_DEBUG_MODE', '').lower() == 'true':
@@ -215,12 +217,12 @@ def ignore_ctrl_c():
         signal.signal(signal.SIGINT, original)
 
 
-def emit_top_level_args_parsed_event(session, args, remaining):
+def emit_top_level_args_parsed_event(session, args, remaining=None):
     session.emit(
         'top-level-args-parsed',
         parsed_args=args,
+        session=session,
         remaining_args=remaining,
-        session=session
     )
 
 

tests/unit/customizations/test_globalargs.py

@@ -193,8 +193,8 @@ def test_register_feature_id(self):
         session = get_session()
         globalargs.detect_migration_breakage(
             parsed_args,
+            session,
             [],
-            session
         )
         # Verify the correct feature ID is registered during the
         # provide-client-params event.
@@ -216,8 +216,8 @@ def test_ecr_login_v2_debug(self):
         with capture_output() as output:
             globalargs.detect_migration_breakage(
                 parsed_args,
+                session,
                 remaining_args,
-                session
             )
         # Verify the expected warning is printed
         self.assertIn(
@@ -235,8 +235,8 @@ def test_ecr_login_v2_debug_env_var(self):
             with mock.patch('os.environ', env):
                 globalargs.detect_migration_breakage(
                     parsed_args,
+                    session,
                     remaining_args,
-                    session
                 )
         # Verify the expected warning is printed
         self.assertIn(
@@ -251,7 +251,7 @@ def test_v2_debug_python_utf8_env_var(self):
         environ = {'PYTHONUTF8': '1'}
         with mock.patch('os.environ', environ):
             with capture_output() as output:
-                globalargs.detect_migration_breakage(parsed_args, [], session)
+                globalargs.detect_migration_breakage(parsed_args, session, [])
                 self.assertIn(
                     'The AWS CLI v2 does not support The `PYTHONUTF8` and '
                     '`PYTHONIOENCODING` environment variables, and instead '
@@ -265,7 +265,7 @@ def test_v2_debug_python_utf8_resolved_env_var(self):
         environ = {'PYTHONUTF8': '1', 'AWS_CLI_FILE_ENCODING': 'UTF-8'}
         with mock.patch('os.environ', environ):
             with capture_output() as output:
-                globalargs.detect_migration_breakage(parsed_args, [], session)
+                globalargs.detect_migration_breakage(parsed_args, session, [])
                 self.assertNotIn(
                     'AWS CLI v2 UPGRADE WARNING: The PYTHONUTF8 and '
                     'PYTHONIOENCODING environment variables are unsupported '
@@ -279,7 +279,7 @@ def test_v2_debug_python_io_encoding_env_var(self):
         environ = {'PYTHONIOENCODING': 'UTF8'}
         with mock.patch('os.environ', environ):
             with capture_output() as output:
-                globalargs.detect_migration_breakage(parsed_args, [], session)
+                globalargs.detect_migration_breakage(parsed_args, session, [])
                 self.assertIn(
                     'The AWS CLI v2 does not support The `PYTHONUTF8` and '
                     '`PYTHONIOENCODING` environment variables, and instead '
@@ -290,7 +290,7 @@ def test_v2_debug_python_io_encoding_env_var(self):
     def test_v2_debug_s3_sigv2(self):
         parsed_args = FakeParsedArgs(v2_debug=True)
         session = get_session()
-        globalargs.detect_migration_breakage(parsed_args, [], session)
+        globalargs.detect_migration_breakage(parsed_args, session, [])
         with capture_output() as output:
             session.emit(
                 'choose-signer.s3.*',
@@ -308,7 +308,7 @@ def test_v2_debug_s3_sigv2(self):
     def test_v2_debug_s3_us_east_1(self):
         parsed_args = FakeParsedArgs(v2_debug=True, region='us-east-1')
         session = get_session()
-        globalargs.detect_migration_breakage(parsed_args, [], session)
+        globalargs.detect_migration_breakage(parsed_args, session, [])
         def mock_get(key: str):
             if key == 'retries':
                 return {'invocation-id': '012345'}
@@ -335,7 +335,7 @@ def mock_get(key: str):
     def test_v2_debug_s3api_us_east_1(self):
         parsed_args = FakeParsedArgs(v2_debug=True, region='us-east-1')
         session = get_session()
-        globalargs.detect_migration_breakage(parsed_args, [], session)
+        globalargs.detect_migration_breakage(parsed_args, session, [])
 
         def mock_get(key: str):
             if key == 'retries':

tests/unit/test_utils.py

@@ -155,6 +155,9 @@ def test_env_var_non_true_value(self):
         with mock.patch.dict(os.environ, {'AWS_CLI_UPGRADE_DEBUG_MODE': 'false'}):
             self.assertFalse(resolve_v2_debug_mode(args))
 
+    def test_args_none(self):
+        self.assertFalse(resolve_v2_debug_mode(None))
+
 
 class MockProcess(object):
     @property