aminghadersohi commented on code in PR #44849:
URL: https://github.com/apache/superset/pull/44849#discussion_r4162519222


##########
superset/security/manager.py:
##########
@@ -5242,7 +5248,12 @@ def has_promiscuous_chart_access() -> bool:
                             and dashboard_.json_metadata
                             and (json_metadata := 
json.loads(dashboard_.json_metadata))
                             and any(
-                                target.get("datasetId") == 
datasource.data["id"]
+                                target.get("datasetId")
+                                == (
+                                    datasource.id

Review Comment:
   Only the deny side of this `semantic_view` branch is tested: replacing 
`datasource.id` here (or at line 851) with `-1` keeps the suite green, and a 
guest native-filter request that targets the view is then refused. Could a test 
pin the allowed case too?



##########
superset/common/query_context_processor.py:
##########
@@ -446,6 +448,8 @@ def query_cache_key(self, query_obj: QueryObject, **kwargs: 
Any) -> str | None:
             if query_obj
             else None
         )
+        if cache_key is not None:
+            capture_result_identity(self._query_context, query_obj, cache_key)

Review Comment:
   Nothing in `superset/` calls `InspectQueryResultCommand` or 
`captured_result_key`, yet this hashes every enabled semantic query. Dropping 
the flag or annotation check in `capture_result_identity` also keeps the suite 
green. Could capture ship with its first caller?



##########
superset/commands/semantic_layer/refresh_metadata.py:
##########
@@ -0,0 +1,341 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+from __future__ import annotations
+
+from collections.abc import Callable, Iterator
+from contextlib import contextmanager
+from datetime import datetime, timezone
+from typing import Any, Literal
+from uuid import UUID
+
+from flask import current_app, g, has_request_context, Request, request
+from flask_appbuilder.security.sqla.models import User
+from sqlalchemy.orm import Session
+from superset_core.semantic_layers.layer import SemanticLayer as 
SemanticLayerABC
+from superset_core.semantic_layers.metadata import (
+    MetadataRefreshError,
+    MetadataRefreshResult,
+)
+from superset_core.semantic_layers.view import SemanticView as SemanticViewABC
+
+from superset import cache_manager, security_manager
+from superset.commands.base import BaseCommand
+from superset.commands.semantic_layer.exceptions import (
+    SemanticLayerForbiddenError,
+    SemanticLayerNotFoundError,
+    SemanticViewNotFoundError,
+)
+from superset.commands.utils import current_user_can_modify_object
+from superset.coordination.deadline_backend import DeadlineRedisBackend
+from superset.daos.semantic_layer import SemanticViewDAO
+from superset.exceptions import SupersetSecurityException
+from superset.extensions import db
+from superset.semantic_layers.cache_inspection import CacheEntryInfo, 
inspect_data_cache
+from superset.semantic_layers.metadata import ScopedMetadataStore
+from superset.semantic_layers.metadata_binding import (
+    connection_metadata_scope,
+    metadata_refresh_enabled,
+    operation_deadline,
+    participates,
+)
+from superset.semantic_layers.metadata_cache import (
+    compatibility_identity,
+    CompatibilityIdentity,
+)
+from superset.semantic_layers.models import SemanticLayer, SemanticView
+from superset.semantic_layers.registry import registry
+from superset.utils import json
+
+
+def authorize_metadata_refresh(view: SemanticView) -> None:
+    """Share one server policy between the affordance and direct mutation."""
+    if not metadata_refresh_enabled():
+        raise SemanticViewNotFoundError()
+    user: User | None = getattr(g, "user", None)
+    if (
+        user is None
+        or user.is_anonymous
+        or getattr(user, "is_guest_user", False)
+        or not user.is_active
+    ):
+        raise SemanticLayerForbiddenError()
+    if not all(
+        security_manager.can_access(action, resource)
+        for action, resource in (
+            ("can_read", "SemanticView"),
+            ("can_read", "SemanticLayer"),
+            ("can_write", "SemanticLayer"),
+        )
+    ):
+        raise SemanticLayerForbiddenError()
+    layer: SemanticLayer | None = view.semantic_layer
+    if layer is None:
+        raise SemanticLayerNotFoundError()
+    try:
+        view.raise_for_access()
+        layer.raise_for_access()
+    except SupersetSecurityException:
+        raise SemanticLayerForbiddenError() from None
+    if not current_user_can_modify_object(layer):
+        raise SemanticLayerForbiddenError()
+    if layer.type not in registry:
+        raise MetadataRefreshError("unsupported")
+    if not participates(layer):
+        raise MetadataRefreshError("unsupported")
+    connection_metadata_scope(layer)
+
+
+def can_refresh_metadata(view: SemanticView) -> bool:
+    """Project policy without constructing a provider or consulting its 
catalog."""
+    try:
+        authorize_metadata_refresh(view)
+    except (
+        SemanticViewNotFoundError,
+        SemanticLayerNotFoundError,
+        SemanticLayerForbiddenError,
+        MetadataRefreshError,
+    ):
+        return False
+    return True
+
+
+def view_binding(view: SemanticView) -> tuple[str, str, str]:
+    """Capture immutable provider selection, independent of Details drafts."""
+    return (
+        str(view.semantic_layer_uuid),
+        view.name,
+        json.dumps(json.loads(view.configuration), sort_keys=True),
+    )
+
+
+@contextmanager
+def fresh_refresh_authority(session: Session) -> Iterator[None]:
+    """Run existing policy against persisted authority without ending request 
work.
+
+    Security-manager and subject helpers use the request-scoped session and
+    principal. Rebind those only for this guard so they cannot reuse an earlier
+    repeatable-read snapshot or cached role membership. The supplied session
+    owns no writes; the caller closes it. Always restore the request's objects.
+    """
+    original_user: User = g.user
+    original_session: Session = db.session()
+    had_login_user: bool = hasattr(g, "_login_user")
+    original_login_user: Any = getattr(g, "_login_user", None)
+    if original_user.is_anonymous or getattr(original_user, "is_guest_user", 
False):
+        raise SemanticLayerForbiddenError()
+    user: User | None = session.get(security_manager.user_model, 
original_user.id)
+    if user is None or not user.is_active:
+        raise SemanticLayerForbiddenError()
+    current_request: Request | None = (
+        request._get_current_object() if has_request_context() else None
+    )
+    had_subject_cache: bool = current_request is not None and hasattr(
+        current_request, "_user_subject_ids"
+    )
+    original_subject_cache: dict[int, list[int]] | None = getattr(
+        current_request, "_user_subject_ids", None
+    )
+    try:
+        if current_request is not None:
+            current_request._user_subject_ids = {}
+        db.session.registry.set(session)
+        g.user = user
+        g._login_user = user
+        with session.no_autoflush:
+            yield
+    finally:
+        if current_request is not None:
+            if had_subject_cache:
+                current_request._user_subject_ids = original_subject_cache
+            else:
+                current_request.__dict__.pop("_user_subject_ids", None)
+        g.user = original_user
+        if had_login_user:
+            g._login_user = original_login_user
+        else:
+            g.pop("_login_user", None)
+        db.session.registry.set(original_session)
+
+
+def guarded_store(
+    view: SemanticView, *, before_publish: Callable[[], None]
+) -> ScopedMetadataStore:
+    """Bind command-specific fresh authority to the unchanged host store 
contract."""
+    deadline: float = operation_deadline()
+    config: Any = current_app.config.get("DISTRIBUTED_COORDINATION_CONFIG")
+    if not isinstance(config, dict):
+        raise MetadataRefreshError("unavailable")
+    try:
+        backend: DeadlineRedisBackend = DeadlineRedisBackend(config, 
deadline=deadline)
+    except ValueError:
+        raise MetadataRefreshError("configuration") from None
+    return ScopedMetadataStore(
+        backend,
+        connection_metadata_scope(view.semantic_layer),
+        deadline=deadline,
+        before_publish=before_publish,
+    )
+
+
+class MetadataCommand(BaseCommand):
+    """Resolve stored scope and connection-management authority in fresh 
reads."""
+
+    def __init__(self, view_uuid: UUID) -> None:
+        if not isinstance(view_uuid, UUID):
+            raise SemanticViewNotFoundError()
+        self._view_uuid: UUID = view_uuid
+        self._view: SemanticView | None = None
+        self._binding: tuple[str, str, str] | None = None
+        self._scope: str | None = None
+
+    def validate(self) -> None:
+        """Reject unavailable targets and authority before provider/cache 
work."""
+        if not metadata_refresh_enabled():
+            raise SemanticViewNotFoundError()
+        operation_deadline()
+        session: Session
+        with (
+            Session(
+                bind=db.session.get_bind(mapper=SemanticLayer), autoflush=False
+            ) as session,
+            fresh_refresh_authority(session),
+        ):
+            self._view = SemanticViewDAO.find_by_uuid(str(self._view_uuid))
+            if self._view is None:
+                raise SemanticViewNotFoundError()
+            authorize_metadata_refresh(self._view)
+            self._binding = view_binding(self._view)
+            self._scope = connection_metadata_scope(self._view.semantic_layer)
+
+    def _revalidate(self) -> None:
+        """Observe committed binding, configuration and authority before 
mutation."""
+        operation_deadline()
+        session: Session
+        with (
+            Session(
+                bind=db.session.get_bind(mapper=SemanticLayer), autoflush=False
+            ) as session,
+            fresh_refresh_authority(session),
+        ):
+            fresh: SemanticView | None = SemanticViewDAO.find_by_uuid(
+                str(self._view_uuid)
+            )
+            if (
+                fresh is None
+                or view_binding(fresh) != self._binding
+                or fresh.semantic_layer is None
+                or connection_metadata_scope(fresh.semantic_layer) != 
self._scope
+            ):
+                raise MetadataRefreshError("configuration_changed")
+            authorize_metadata_refresh(fresh)
+
+
+class RefreshMetadataCommand(MetadataCommand):
+    """Refresh the authorized view's stored connection without ORM 
mutations."""
+
+    def run(self) -> MetadataRefreshResult:
+        self.validate()
+        assert self._view is not None
+        layer: SemanticLayer = self._view.semantic_layer
+        try:
+            implementation: SemanticLayerABC[Any, SemanticViewABC] = registry[
+                layer.type
+            ].from_configuration(json.loads(layer.configuration))
+        except (ValueError, TypeError):
+            raise MetadataRefreshError("configuration") from None
+        if implementation.metadata_refresh is None:

Review Comment:
   No test reaches this guard. With it removed the suite stays green, and a 
provider that opts in but builds no adapter fails on `None.bind` with an 
`AttributeError` (500) instead of `unsupported` (422).



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