feat: implement cache invalidation api

superset/app.py

@@ -125,6 +125,7 @@ def init_views(self) -> None:
         #
         # pylint: disable=too-many-locals
         # pylint: disable=too-many-statements
+        from superset.cachekeys.api import CacheRestApi
         from superset.charts.api import ChartRestApi
         from superset.connectors.druid.views import (
             Druid,
@@ -194,6 +195,7 @@ def init_views(self) -> None:
         #
         # Setup API views
         #
+        appbuilder.add_api(CacheRestApi)
         appbuilder.add_api(ChartRestApi)
         appbuilder.add_api(DashboardRestApi)
         appbuilder.add_api(DatabaseRestApi)

superset/cachekeys/__init__.py

@@ -0,0 +1,16 @@
+# 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.

superset/cachekeys/api.py

@@ -0,0 +1,123 @@
+# 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.
+import logging
+
+from flask import request, Response
+from flask_appbuilder import expose
+from flask_appbuilder.api import safe
+from flask_appbuilder.models.sqla.interface import SQLAInterface
+from flask_appbuilder.security.decorators import protect
+from marshmallow.exceptions import ValidationError
+from sqlalchemy.exc import SQLAlchemyError
+
+from superset.cachekeys.schemas import CacheInvalidationRequestSchema
+from superset.connectors.connector_registry import ConnectorRegistry
+from superset.extensions import cache_manager, db, event_logger
+from superset.models.cache import CacheKey
+from superset.views.base_api import BaseSupersetModelRestApi, statsd_metrics
+
+logger = logging.getLogger(__name__)
+
+
+class CacheRestApi(BaseSupersetModelRestApi):
+    datamodel = SQLAInterface(CacheKey)
+    resource_name = "cachekey"
+    allow_browser_login = True
+    class_permission_name = "CacheRestApi"
+    include_route_methods = {
+        "invalidate",
+    }
+
+    openapi_spec_component_schemas = (CacheInvalidationRequestSchema,)
+
+    @expose("/invalidate", methods=["POST"])
+    @event_logger.log_this
+    @protect()
+    @safe
+    @statsd_metrics
+    def invalidate(self) -> Response:
+        """
+        Takes a list of datasources, finds the associated cache records and
+        invalidates them and removes the database records
+
+        ---
+        post:
+          description: >-
+            Takes a list of datasources, finds the associated cache records and
+            invalidates them and removes the database records
+          requestBody:
+            description: >-
+              A list of datasources uuid or the tuples of database and datasource names
+            required: true
+            content:
+              application/json:
+                schema:
+                  $ref: "#/components/schemas/CacheInvalidationRequestSchema"
+          responses:
+            201:
+              description: cache was successfully invalidated
+            400:
+              $ref: '#/components/responses/400'
+            500:
+              $ref: '#/components/responses/500'
+        """
+        try:
+            datasources = CacheInvalidationRequestSchema().load(request.json)
+        except KeyError:
+            return self.response_400(message="Request is incorrect")
+        except ValidationError as error:
+            return self.response_400(message=str(error))
+        datasource_uids = set(datasources.get("datasource_uids", []))
+        for ds in datasources.get("datasources", []):
+            ds_obj = ConnectorRegistry.get_datasource_by_name(
+                session=db.session,
+                datasource_type=ds.get("datasource_type"),
+                datasource_name=ds.get("datasource_name"),
+                schema=ds.get("schema"),
+                database_name=ds.get("database_name"),
+            )
+            if ds_obj:
+                datasource_uids.add(ds_obj.uid)
+
+        cache_key_objs = (
+            db.session.query(CacheKey)
+            .filter(CacheKey.datasource_uid.in_(datasource_uids))
+            .all()
+        )
+        cache_keys = [c.cache_key for c in cache_key_objs]
+        if cache_key_objs:
+            all_keys_deleted = cache_manager.cache.delete_many(*cache_keys)
+
+            if not all_keys_deleted:
+                # expected behavior as keys may expire and cache is not a
+                # persistent storage
+                logger.info(
+                    "Some of the cache keys were not deleted in the list %s", cache_keys
+                )
+
+            try:
+                delete_stmt = CacheKey.__table__.delete().where(  # pylint: disable=no-member
+                    CacheKey.cache_key.in_(cache_keys)
+                )
+                db.session.execute(delete_stmt)
+                db.session.commit()
+            except SQLAlchemyError as ex:  # pragma: no cover
+                logger.error(ex)
+                db.session.rollback()
+                return self.response_500(str(ex))
+            db.session.commit()
+        return self.response(201)

superset/cachekeys/schemas.py

@@ -0,0 +1,45 @@
+# 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.
+# RISON/JSON schemas for query parameters
+from marshmallow import fields, Schema, validate
+
+from superset.charts.schemas import (
+    datasource_name_description,
+    datasource_type_description,
+    datasource_uid_description,
+)
+
+
+class Datasource(Schema):
+    database_name = fields.String(description="Datasource name",)
+    datasource_name = fields.String(description=datasource_name_description,)
+    schema = fields.String(description="Datasource schema",)
+    datasource_type = fields.String(
+        description=datasource_type_description,
+        validate=validate.OneOf(choices=("druid", "table", "view")),
+        required=True,
+    )
+
+
+class CacheInvalidationRequestSchema(Schema):
+    datasource_uids = fields.List(
+        fields.String(), description=datasource_uid_description,
+    )
+    datasources = fields.List(
+        fields.Nested(Datasource),
+        description="A list of the data source and database names",
+    )

superset/charts/schemas.py

@@ -71,6 +71,10 @@
     "A complete datasource identification needs `datasouce_id` "
     "and `datasource_type`."
 )
+datasource_uid_description = (
+    "The uid of the dataset/datasource this new chart will use. "
+    "A complete datasource identification needs `datasouce_uid` "
+)
 datasource_type_description = (
     "The type of dataset/datasource identified on `datasource_id`."
 )

tests/base_tests.py

@@ -22,6 +22,7 @@
 from unittest.mock import Mock, patch
 
 import pandas as pd
+import pytest
 from flask import Response
 from flask_appbuilder.security.sqla import models as ab_models
 from flask_testing import TestCase
@@ -42,6 +43,7 @@
 from superset.views.base_api import BaseSupersetModelRestApi
 
 FAKE_DB_NAME = "fake_db_100"
+test_client = app.test_client()
 
 
 def login(client: Any, username: str = "admin", password: str = "general"):
@@ -69,6 +71,39 @@ def get_resp(
     return resp.data.decode("utf-8")
 
 
+def post_assert_metric(
+    client: Any, uri: str, data: Dict[str, Any], func_name: str
+) -> Response:
+    """
+    Simple client post with an extra assertion for statsd metrics
+
+    :param client: test client for superset api requests
+    :param uri: The URI to use for the HTTP POST
+    :param data: The JSON data payload to be posted
+    :param func_name: The function name that the HTTP POST triggers
+    for the statsd metric assertion
+    :return: HTTP Response
+    """
+    with patch.object(
+        BaseSupersetModelRestApi, "incr_stats", return_value=None
+    ) as mock_method:
+        rv = client.post(uri, json=data)
+    if 200 <= rv.status_code < 400:
+        mock_method.assert_called_once_with("success", func_name)
+    else:
+        mock_method.assert_called_once_with("error", func_name)
+    return rv
+
+
+@pytest.fixture
+def logged_in_admin():
+    """Fixture with app context and logged in admin user."""
+    with app.app_context():
+        login(test_client, username="admin")
+        yield
+        test_client.get("/logout/", follow_redirects=True)
+
+
 class SupersetTestCase(TestCase):
 
     default_schema_backend_map = {
@@ -84,6 +119,15 @@ class SupersetTestCase(TestCase):
     def create_app(self):
         return app
 
+    @staticmethod
+    def get_birth_names_dataset():
+        example_db = get_example_database()
+        return (
+            db.session.query(SqlaTable)
+            .filter_by(database=example_db, table_name="birth_names")
+            .one()
+        )
+
     @staticmethod
     def create_user_with_roles(username: str, roles: List[str]):
         user_to_create = security_manager.find_user(username)
@@ -422,24 +466,7 @@ def delete_assert_metric(self, uri: str, func_name: str) -> Response:
     def post_assert_metric(
         self, uri: str, data: Dict[str, Any], func_name: str
     ) -> Response:
-        """
-        Simple client post with an extra assertion for statsd metrics
-
-        :param uri: The URI to use for the HTTP POST
-        :param data: The JSON data payload to be posted
-        :param func_name: The function name that the HTTP POST triggers
-        for the statsd metric assertion
-        :return: HTTP Response
-        """
-        with patch.object(
-            BaseSupersetModelRestApi, "incr_stats", return_value=None
-        ) as mock_method:
-            rv = self.client.post(uri, json=data)
-        if 200 <= rv.status_code < 400:
-            mock_method.assert_called_once_with("success", func_name)
-        else:
-            mock_method.assert_called_once_with("error", func_name)
-        return rv
+        return post_assert_metric(self.client, uri, data, func_name)
 
     def put_assert_metric(
         self, uri: str, data: Dict[str, Any], func_name: str

tests/cachekeys/__init__.py

@@ -0,0 +1,16 @@
+# 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.