db: add manager methods appliers

pkg/cloudcommon/db/apply_manager_method.go

@@ -0,0 +1,82 @@
+// Copyright 2019 Yunion
+//
+// Licensed 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.
+
+package db
+
+import (
+	"context"
+
+	"yunion.io/x/pkg/errors"
+	"yunion.io/x/sqlchemy"
+
+	"yunion.io/x/onecloud/pkg/mcclient"
+	"yunion.io/x/onecloud/pkg/util/rbacutils"
+	"yunion.io/x/onecloud/pkg/util/stringutils2"
+)
+
+type ListItemExportKeysProvider interface {
+	ListItemExportKeys(ctx context.Context, q *sqlchemy.SQuery, userCred mcclient.TokenCredential, keys stringutils2.SSortedStrings) (*sqlchemy.SQuery, error)
+}
+
+func ApplyListItemExportKeys(
+	ctx context.Context,
+	q *sqlchemy.SQuery,
+	userCred mcclient.TokenCredential,
+	keys stringutils2.SSortedStrings,
+	managers ...ListItemExportKeysProvider,
+) (*sqlchemy.SQuery, error) {
+	var err error
+	for _, manager := range managers {
+		q, err = manager.ListItemExportKeys(ctx, q, userCred, keys)
+		if err != nil {
+			return nil, errors.Wrapf(err, "%T.ListItemExportKeys", manager)
+		}
+	}
+	return q, nil
+}
+
+type QueryDistinctExtraFieldProvider interface {
+	QueryDistinctExtraField(q *sqlchemy.SQuery, field string) (*sqlchemy.SQuery, error)
+}
+
+func ApplyQueryDistinctExtraField(
+	q *sqlchemy.SQuery,
+	field string,
+	managers ...QueryDistinctExtraFieldProvider,
+) (*sqlchemy.SQuery, error) {
+	var err error
+	for _, manager := range managers {
+		q, err = manager.QueryDistinctExtraField(q, field)
+		if err != nil {
+			return nil, errors.Wrapf(err, "%T.QueryDistinctExtraField", manager)
+		}
+	}
+	return q, nil
+}
+
+type FilterByOwnerProvider interface {
+	FilterByOwner(q *sqlchemy.SQuery, owner mcclient.IIdentityProvider, scope rbacutils.TRbacScope) *sqlchemy.SQuery
+}
+
+func ApplyFilterByOwner(
+	q *sqlchemy.SQuery,
+	owner mcclient.IIdentityProvider,
+	scope rbacutils.TRbacScope,
+	managers ...FilterByOwnerProvider,
+) *sqlchemy.SQuery {
+	for _, manager := range managers {
+		q = manager.FilterByOwner(q, owner, scope)
+	}
+	return q
+}