mgr/dashboard: add deprecation warning on ns add nvme cli command

Fixes: https://tracker.ceph.com/issues/78228
Signed-off-by: Tomer Haskalovitch <tomer.haska@ibm.com>

src/pybind/mgr/dashboard/controllers/nvmeof.py

@@ -1263,7 +1263,8 @@ else:
             "nvmeof namespace add",
             model.NamespaceCreation,
             alias="nvmeof ns add",
-            success_message_template="Adding namespace {nsid} to {nqn}: Successful"
+            success_message_template="Adding namespace {nsid} to {nqn}: Successful",
+            deprecated_params={"size": "--size is deprecated, please use --rbd-image-size"}
         )
         @EndpointDoc(
             "Create a new NVMeoF namespace.",

src/pybind/mgr/dashboard/services/nvmeof_cli.py

@@ -349,7 +349,8 @@ class NvmeofCLICommand(DBCLICommand):
                  poll: bool = False,
                  success_message_template: Optional[str] = None,
                  success_message_map: Optional[Dict[str, Any]] = None,
-                 success_message_fn: Optional[Callable[[Dict[str, Any]], str]] = None):
+                 success_message_fn: Optional[Callable[[Dict[str, Any]], str]] = None,
+                 deprecated_params: Optional[Dict[str, str]] = None):
         super().__init__(prefix, perm, poll)
         self._output_formatter = AnnotatedDataTextOutputFormatter()
         self._model = model
@@ -360,6 +361,7 @@ class NvmeofCLICommand(DBCLICommand):
         self._success_message_map = success_message_map or {}
         self._success_message_fn = success_message_fn
         self._func_defaults: Dict[str, Any] = {}
+        self._deprecated_params: Dict[str, str] = deprecated_params or {}
 
     def __call__(self, func):
         resp = super().__call__(func)
@@ -372,6 +374,7 @@ class NvmeofCLICommand(DBCLICommand):
                 success_message_template=self._success_message_template,
                 success_message_map=self._success_message_map,
                 success_message_fn=self._success_message_fn,
+                deprecated_params=self._deprecated_params,
             )
             self._alias_cmd(func)
             self._alias_cmd._func_defaults = self._alias_cmd._compute_func_defaults()
@@ -495,9 +498,16 @@ class NvmeofCLICommand(DBCLICommand):
              mgr: Any,
              cmd_dict: Dict[str, Any],
              inbuf: Optional[str] = None) -> HandleCommandResult:
+        deprecated_warnings = ''
         try:
             out_format = cmd_dict.get('format')
             args_map = self._args_map_from_argspec(cmd_dict, inbuf)
+
+            if out_format == 'plain' or not out_format:
+                for param, msg in self._deprecated_params.items():
+                    if args_map.get(param) is not None:
+                        deprecated_warnings += f"\nWarning: {msg}"
+
             ret = super().call(mgr, cmd_dict, inbuf)
             if ret is None:
                 ret = {}
@@ -519,6 +529,7 @@ class NvmeofCLICommand(DBCLICommand):
                 wrn_msg = ret.get('error_message', '') if isinstance(ret, dict) else ''
                 if wrn_msg:
                     out += f"\nWarning: {wrn_msg}"
+                out += deprecated_warnings
 
             elif out_format == 'json':
                 out = json.dumps(ret, indent=4)
@@ -532,4 +543,4 @@ class NvmeofCLICommand(DBCLICommand):
 
         # pylint: disable=broad-except
         except Exception as e:
-            return HandleCommandResult(-errno.EINVAL, '', str(e))
+            return HandleCommandResult(-errno.EINVAL, '', str(e) + deprecated_warnings)

src/pybind/mgr/dashboard/tests/test_nvmeof_cli.py

@@ -788,6 +788,519 @@ class TestNvmeofCLICommandSuccessMessage:
         assert test_cmd not in NvmeofCLICommand.COMMANDS
 
 
+class TestNvmeofCLICommandDeprecatedParams:  # pylint: disable=too-many-public-methods
+    @staticmethod
+    def _make_cmd(test_cmd, deprecated_params=None, alias=None):
+        class Model(NamedTuple):
+            status: str
+
+        kwargs = {}
+        if deprecated_params is not None:
+            kwargs['deprecated_params'] = deprecated_params
+        if alias is not None:
+            kwargs['alias'] = alias
+
+        @NvmeofCLICommand(test_cmd, Model, **kwargs)
+        def fn(self, new_param: str,  # pylint: disable=unused-variable,unused-argument
+               old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            return {'status': 'ok'}
+
+        return test_cmd
+
+    @staticmethod
+    def _cleanup(*cmds):
+        for cmd in cmds:
+            NvmeofCLICommand.COMMANDS.pop(cmd, None)
+
+    def test_deprecated_params_stored_on_instance(self):
+        test_cmd = "test deprecated store"
+        mapping = {"old_param": "old_param is deprecated, use new_param"}
+        self._make_cmd(test_cmd, deprecated_params=mapping)
+        try:
+            cmd = NvmeofCLICommand.COMMANDS[test_cmd]
+            assert cmd._deprecated_params == mapping  # pylint: disable=protected-access
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_no_deprecated_params_defaults_to_empty_dict(self):
+        test_cmd = "test deprecated empty"
+        self._make_cmd(test_cmd)
+        try:
+            cmd = NvmeofCLICommand.COMMANDS[test_cmd]
+            assert cmd._deprecated_params == {}  # pylint: disable=protected-access
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_none_deprecated_params_defaults_to_empty_dict(self):
+        test_cmd = "test deprecated none"
+        self._make_cmd(test_cmd, deprecated_params=None)
+        try:
+            cmd = NvmeofCLICommand.COMMANDS[test_cmd]
+            assert cmd._deprecated_params == {}  # pylint: disable=protected-access
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_alias_inherits_deprecated_params(self):
+        test_cmd = "test deprecated alias main"
+        test_alias = "test deprecated alias alias"
+        mapping = {"old_param": "old_param is deprecated, use new_param"}
+        self._make_cmd(test_cmd, deprecated_params=mapping, alias=test_alias)
+        try:
+            cmd = NvmeofCLICommand.COMMANDS[test_alias]
+            assert cmd._deprecated_params == mapping  # pylint: disable=protected-access
+        finally:
+            self._cleanup(test_cmd, test_alias)
+
+    def test_alias_without_deprecated_params_has_empty_dict(self):
+        test_cmd = "test no deprecated alias main"
+        test_alias = "test no deprecated alias alias"
+        self._make_cmd(test_cmd, alias=test_alias)
+        try:
+            cmd = NvmeofCLICommand.COMMANDS[test_alias]
+            assert cmd._deprecated_params == {}  # pylint: disable=protected-access
+        finally:
+            self._cleanup(test_cmd, test_alias)
+
+    def test_warning_emitted_when_deprecated_param_is_supplied(self):
+        test_cmd = "test deprecated warn supplied"
+        self._make_cmd(
+            test_cmd,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == 0
+            assert "\nWarning: --old-param is deprecated, please use --new-param" in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_no_warning_when_deprecated_param_is_absent(self):
+        test_cmd = "test deprecated warn absent"
+        self._make_cmd(
+            test_cmd,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo"}
+            )
+            assert result.retval == 0
+            assert "Warning" not in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_no_warning_when_deprecated_params_is_empty(self):
+        test_cmd = "test no deprecated params"
+        self._make_cmd(test_cmd)
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == 0
+            assert "Warning" not in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_multiple_deprecated_params_each_emit_warning(self):
+        test_cmd = "test deprecated multi warn"
+
+        class Model(NamedTuple):
+            status: str
+
+        @NvmeofCLICommand(
+            test_cmd,
+            Model,
+            deprecated_params={
+                "old_a": "--old-a is deprecated, use --new-a",
+                "old_b": "--old-b is deprecated, use --new-b",
+            }
+        )  # pylint: disable=unused-variable
+        def fn(self, new_a: str,  # pylint: disable=unused-argument
+               old_a: Optional[str] = None,  # pylint: disable=unused-argument
+               old_b: Optional[str] = None):  # pylint: disable=unused-argument
+            return {'status': 'ok'}
+
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_a": "x", "old_a": "y", "old_b": "z"}
+            )
+            assert result.retval == 0
+            assert "\nWarning: --old-a is deprecated, use --new-a" in result.stdout
+            assert "\nWarning: --old-b is deprecated, use --new-b" in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_only_supplied_deprecated_param_warns(self):
+        test_cmd = "test deprecated partial warn"
+
+        class Model(NamedTuple):
+            status: str
+
+        @NvmeofCLICommand(
+            test_cmd,
+            Model,
+            deprecated_params={
+                "old_a": "--old-a is deprecated, use --new-a",
+                "old_b": "--old-b is deprecated, use --new-b",
+            }
+        )  # pylint: disable=unused-variable
+        def fn(self, new_a: str,  # pylint: disable=unused-argument
+               old_a: Optional[str] = None,  # pylint: disable=unused-argument
+               old_b: Optional[str] = None):  # pylint: disable=unused-argument
+            return {'status': 'ok'}
+
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_a": "x", "old_a": "y"}
+            )
+            assert result.retval == 0
+            assert "\nWarning: --old-a is deprecated, use --new-a" in result.stdout
+            assert "--old-b" not in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_warning_not_emitted_for_json_format(self):
+        test_cmd = "test deprecated json no warn"
+        self._make_cmd(
+            test_cmd,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"format": "json", "new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == 0
+            assert "Warning" not in result.stdout
+            parsed = json.loads(result.stdout)
+            assert "Warning" not in str(parsed)
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_warning_not_emitted_for_yaml_format(self):
+        test_cmd = "test deprecated yaml no warn"
+        self._make_cmd(
+            test_cmd,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"format": "yaml", "new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == 0
+            assert "Warning" not in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_warning_emitted_for_default_format(self):
+        """Default format (no 'format' key) also emits warnings."""
+        test_cmd = "test deprecated default format warn"
+        self._make_cmd(
+            test_cmd,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == 0
+            assert "\nWarning: --old-param is deprecated, please use --new-param" in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_warning_emitted_for_explicit_plain_format(self):
+        test_cmd = "test deprecated plain format warn"
+        self._make_cmd(
+            test_cmd,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"format": "plain", "new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == 0
+            assert "\nWarning: --old-param is deprecated, please use --new-param" in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_deprecated_warning_and_error_message_warning_both_appear(self):
+        test_cmd = "test deprecated coexist error message"
+
+        class Model(NamedTuple):
+            status: str
+            error_message: str
+
+        @NvmeofCLICommand(
+            test_cmd,
+            Model,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )  # pylint: disable=unused-variable
+        def fn(self, new_param: str,  # pylint: disable=unused-argument
+               old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            return {'status': 'ok', 'error_message': 'something to note from gRPC'}
+
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == 0
+            assert "\nWarning: something to note from gRPC" in result.stdout
+            assert "\nWarning: --old-param is deprecated, please use --new-param" in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_error_message_warning_without_deprecated_param(self):
+        test_cmd = "test error message no deprecated"
+
+        class Model(NamedTuple):
+            status: str
+            error_message: str
+
+        @NvmeofCLICommand(test_cmd, Model)
+        def fn(self, new_param: str):  # pylint: disable=unused-variable,unused-argument
+            return {'status': 'ok', 'error_message': 'note from gRPC'}
+
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo"}
+            )
+            assert result.retval == 0
+            assert "\nWarning: note from gRPC" in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_alias_emits_same_warning_as_main_command(self):
+        test_cmd = "test deprecated alias warn main"
+        test_alias = "test deprecated alias warn alias"
+        self._make_cmd(
+            test_cmd,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"},
+            alias=test_alias
+        )
+        try:
+            for cmd_key in (test_cmd, test_alias):
+                result = NvmeofCLICommand.COMMANDS[cmd_key].call(
+                    MagicMock(),
+                    {"new_param": "foo", "old_param": "bar"}
+                )
+                assert result.retval == 0, f"failed for {cmd_key}"
+                assert "\nWarning: --old-param is deprecated, please use --new-param" \
+                    in result.stdout, f"warning missing for {cmd_key}"
+        finally:
+            self._cleanup(test_cmd, test_alias)
+
+    def test_alias_also_suppresses_warning_when_param_absent(self):
+        test_cmd = "test deprecated alias no warn main"
+        test_alias = "test deprecated alias no warn alias"
+        self._make_cmd(
+            test_cmd,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"},
+            alias=test_alias
+        )
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_alias].call(
+                MagicMock(),
+                {"new_param": "foo"}
+            )
+            assert result.retval == 0
+            assert "Warning" not in result.stdout
+        finally:
+            self._cleanup(test_cmd, test_alias)
+
+    def test_warning_emitted_on_failure_when_deprecated_param_supplied(self):
+        test_cmd = "test deprecated warn on failure"
+
+        class Model(NamedTuple):
+            status: str
+
+        @NvmeofCLICommand(
+            test_cmd,
+            Model,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )  # pylint: disable=unused-variable
+        def fn(self, new_param: str,  # pylint: disable=unused-argument
+               old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            raise DashboardException(msg="something went wrong", component="nvmeof",
+                                     http_status_code=500)
+
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == -errno.EINVAL
+            assert result.stdout == ''
+            assert "\nWarning: --old-param is deprecated, please use --new-param" in result.stderr
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_no_warning_on_failure_when_deprecated_param_absent(self):
+        test_cmd = "test deprecated no warn on failure absent"
+
+        class Model(NamedTuple):
+            status: str
+
+        @NvmeofCLICommand(
+            test_cmd,
+            Model,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )  # pylint: disable=unused-variable
+        def fn(self, new_param: str,  # pylint: disable=unused-argument
+               old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            raise DashboardException(msg="something went wrong", component="nvmeof",
+                                     http_status_code=500)
+
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo"}
+            )
+            assert result.retval == -errno.EINVAL
+            assert "Warning" not in result.stderr
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_warning_in_stdout_on_success_and_stderr_on_failure(self):
+        test_cmd_ok = "test deprecated path ok"
+        test_cmd_fail = "test deprecated path fail"
+
+        class Model(NamedTuple):
+            status: str
+
+        @NvmeofCLICommand(
+            test_cmd_ok,
+            Model,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )  # pylint: disable=unused-variable
+        def fn_ok(self, new_param: str,  # pylint: disable=unused-argument
+                  old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            return {'status': 'ok'}
+
+        @NvmeofCLICommand(
+            test_cmd_fail,
+            Model,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )  # pylint: disable=unused-variable
+        def fn_fail(self, new_param: str,  # pylint: disable=unused-argument
+                    old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            raise DashboardException(msg="boom", component="nvmeof", http_status_code=500)
+
+        try:
+            ok_result = NvmeofCLICommand.COMMANDS[test_cmd_ok].call(
+                MagicMock(),
+                {"new_param": "foo", "old_param": "bar"}
+            )
+            assert ok_result.retval == 0
+            assert "\nWarning: --old-param is deprecated, please use --new-param" \
+                in ok_result.stdout
+            assert ok_result.stderr == ''
+
+            fail_result = NvmeofCLICommand.COMMANDS[test_cmd_fail].call(
+                MagicMock(),
+                {"new_param": "foo", "old_param": "bar"}
+            )
+            assert fail_result.retval == -errno.EINVAL
+            assert fail_result.stdout == ''
+            assert "\nWarning: --old-param is deprecated, please use --new-param" \
+                in fail_result.stderr
+        finally:
+            self._cleanup(test_cmd_ok, test_cmd_fail)
+
+    def test_deprecated_warning_appended_after_success_message(self):
+        test_cmd = "test deprecated with success msg"
+
+        class Model(NamedTuple):
+            status: str
+
+        @NvmeofCLICommand(
+            test_cmd,
+            Model,
+            success_message_template="Done: {new_param}",
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )  # pylint: disable=unused-variable
+        def fn(self, new_param: str,  # pylint: disable=unused-argument
+               old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            return {'status': 'ok'}
+
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo", "old_param": "bar"}
+            )
+            assert result.retval == 0
+            assert result.stdout.startswith("Done: foo")
+            assert "\nWarning: --old-param is deprecated, please use --new-param" in result.stdout
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_no_warning_appended_to_success_message_when_param_absent(self):
+        test_cmd = "test deprecated with success msg no warn"
+
+        class Model(NamedTuple):
+            status: str
+
+        @NvmeofCLICommand(
+            test_cmd,
+            Model,
+            success_message_template="Done: {new_param}",
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )  # pylint: disable=unused-variable
+        def fn(self, new_param: str,  # pylint: disable=unused-argument
+               old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            return {'status': 'ok'}
+
+        try:
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"new_param": "foo"}
+            )
+            assert result.retval == 0
+            assert result.stdout == "Done: foo"
+        finally:
+            self._cleanup(test_cmd)
+
+    def test_malformed_arg_in_args_map_returns_handle_command_result_not_uncaught_exception(self):
+        test_cmd = "test argspec throws inside try"
+
+        class Model(NamedTuple):
+            status: str
+
+        @NvmeofCLICommand(
+            test_cmd,
+            Model,
+            deprecated_params={"old_param": "--old-param is deprecated, please use --new-param"}
+        )  # pylint: disable=unused-variable
+        def fn(self, count: int,  # pylint: disable=unused-argument
+               old_param: Optional[str] = None):  # pylint: disable=unused-argument
+            return {'status': 'ok'}
+
+        try:
+            # 'count' is typed as int but we pass a string value to it so
+            # CephArgtype.cast_to raises ValueError inside _args_map_from_argspec
+            result = NvmeofCLICommand.COMMANDS[test_cmd].call(
+                MagicMock(),
+                {"count": "not-a-number", "old_param": "bar"}
+            )
+            assert isinstance(result, HandleCommandResult)
+            assert result.retval == -errno.EINVAL
+            assert result.stdout == ''
+            assert result.stderr != ''
+        finally:
+            self._cleanup(test_cmd)
+
+
 class TestNVMeoFConfCLI(unittest.TestCase, CLICommandTestMixin):
     def setUp(self):
         self.mock_kv_store()