feat(database): POST, PUT, DELETE API endpoints (#10741)

* feat(database): POST, PUT, DELETE API endpoints

* post tests

* more tests

* lint

* lint

* debug ci

* fix test

* fix test

* fix test

* fix test

* fix test

* fix test

* cleanup

* handle db connection failures

* lint

* skip hive and presto for connection fail test

* fix typo

superset/databases/dao.py

@@ -0,0 +1,43 @@
+# 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 superset.dao.base import BaseDAO
+from superset.databases.filters import DatabaseFilter
+from superset.extensions import db
+from superset.models.core import Database
+
+logger = logging.getLogger(__name__)
+
+
+class DatabaseDAO(BaseDAO):
+    model_cls = Database
+    base_filter = DatabaseFilter
+
+    @staticmethod
+    def validate_uniqueness(database_name: str) -> bool:
+        database_query = db.session.query(Database).filter(
+            Database.database_name == database_name
+        )
+        return not db.session.query(database_query.exists()).scalar()
+
+    @staticmethod
+    def validate_update_uniqueness(database_id: int, database_name: str) -> bool:
+        database_query = db.session.query(Database).filter(
+            Database.database_name == database_name, Database.id != database_id,
+        )
+        return not db.session.query(database_query.exists()).scalar()