复制项目

pkg/rpccache/common.go

@@ -0,0 +1,77 @@
+// Copyright © 2024 OpenIM. All rights reserved.
+//
+// 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 rpccache
+
+import (
+	"github.com/openimsdk/tools/errs"
+	"google.golang.org/protobuf/proto"
+)
+
+func newListMap[V comparable](values []V, err error) (*listMap[V], error) {
+	if err != nil {
+		return nil, err
+	}
+	lm := &listMap[V]{
+		List: values,
+		Map:  make(map[V]struct{}, len(values)),
+	}
+	for _, value := range values {
+		lm.Map[value] = struct{}{}
+	}
+	return lm, nil
+}
+
+type listMap[V comparable] struct {
+	List []V
+	Map  map[V]struct{}
+}
+
+func respProtoMarshal(resp proto.Message, err error) ([]byte, error) {
+	if err != nil {
+		return nil, err
+	}
+	return proto.Marshal(resp)
+}
+
+func cacheUnmarshal[V any](resp []byte, err error) (*V, error) {
+	if err != nil {
+		return nil, err
+	}
+	var val V
+	if err := proto.Unmarshal(resp, any(&val).(proto.Message)); err != nil {
+		return nil, errs.WrapMsg(err, "local cache proto.Unmarshal error")
+	}
+	return &val, nil
+}
+
+type cacheProto[V any] struct{}
+
+func (cacheProto[V]) Marshal(resp *V, err error) ([]byte, error) {
+	if err != nil {
+		return nil, err
+	}
+	return proto.Marshal(any(resp).(proto.Message))
+}
+
+func (cacheProto[V]) Unmarshal(resp []byte, err error) (*V, error) {
+	if err != nil {
+		return nil, err
+	}
+	var val V
+	if err := proto.Unmarshal(resp, any(&val).(proto.Message)); err != nil {
+		return nil, errs.WrapMsg(err, "local cache proto.Unmarshal error")
+	}
+	return &val, nil
+}