Context component:

- Added indexes recommended by Cockroach internal planner to boost performance

src/context/service/database/models/_Base.py

@@ -13,10 +13,47 @@
 # limitations under the License.
 
 import sqlalchemy
-from sqlalchemy.orm import declarative_base
+from typing import Any, List
+from sqlalchemy.orm import Session, sessionmaker, declarative_base
+from sqlalchemy.sql import text
+from sqlalchemy_cockroachdb import run_transaction
 
 _Base = declarative_base()
 
+def create_performance_enhancers(db_engine : sqlalchemy.engine.Engine) -> None:
+    def index_storing(
+        index_name : str, table_name : str, index_fields : List[str], storing_fields : List[str]
+    ) -> Any:
+        str_index_fields = ','.join(['"{:s}"'.format(index_field) for index_field in index_fields])
+        str_storing_fields = ','.join(['"{:s}"'.format(storing_field) for storing_field in storing_fields])
+        INDEX_STORING = 'CREATE INDEX IF NOT EXISTS {:s} ON "{:s}" ({:s}) STORING ({:s});'
+        return text(INDEX_STORING.format(index_name, table_name, str_index_fields, str_storing_fields))
+
+    statements = [
+        index_storing('configrule_device_uuid_rec_idx', 'configrule', ['device_uuid'], [
+            'service_uuid', 'slice_uuid', 'position', 'kind', 'action', 'data', 'created_at', 'updated_at'
+        ]),
+        index_storing('configrule_service_uuid_rec_idx', 'configrule', ['service_uuid'], [
+            'device_uuid', 'slice_uuid', 'position', 'kind', 'action', 'data', 'created_at', 'updated_at'
+        ]),
+        index_storing('configrule_slice_uuid_rec_idx', 'configrule', ['slice_uuid'], [
+            'device_uuid', 'service_uuid', 'position', 'kind', 'action', 'data', 'created_at', 'updated_at'
+        ]),
+        index_storing('constraint_service_uuid_rec_idx', 'constraint', ['service_uuid'], [
+            'slice_uuid', 'position', 'kind', 'data', 'created_at', 'updated_at'
+        ]),
+        index_storing('constraint_slice_uuid_rec_idx', 'constraint', ['slice_uuid'], [
+            'service_uuid', 'position', 'kind', 'data', 'created_at', 'updated_at'
+        ]),
+        index_storing('endpoint_device_uuid_rec_idx', 'endpoint', ['device_uuid'], [
+            'topology_uuid', 'name', 'endpoint_type', 'kpi_sample_types', 'created_at', 'updated_at'
+        ]),
+    ]
+    def callback(session : Session) -> bool:
+        for stmt in statements: session.execute(stmt)
+    run_transaction(sessionmaker(bind=db_engine), callback)
+
 def rebuild_database(db_engine : sqlalchemy.engine.Engine, drop_if_exists : bool = False):
     if drop_if_exists: _Base.metadata.drop_all(db_engine)
     _Base.metadata.create_all(db_engine)
+    create_performance_enhancers(db_engine)