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Open-IM-Server/pkg/common/db/localcache/group.go

74 lines
2.2 KiB

// Copyright © 2023 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 localcache
import (
"context"
"sync"
"github.com/OpenIMSDK/Open-IM-Server/pkg/discoveryregistry"
"github.com/OpenIMSDK/Open-IM-Server/pkg/errs"
"github.com/OpenIMSDK/Open-IM-Server/pkg/proto/group"
"github.com/OpenIMSDK/Open-IM-Server/pkg/rpcclient"
)
type GroupLocalCache struct {
lock sync.Mutex
cache map[string]GroupMemberIDsHash
client *rpcclient.Group
}
type GroupMemberIDsHash struct {
memberListHash uint64
userIDs []string
}
func NewGroupLocalCache(discov discoveryregistry.SvcDiscoveryRegistry) *GroupLocalCache {
client := rpcclient.NewGroup(discov)
return &GroupLocalCache{
cache: make(map[string]GroupMemberIDsHash, 0),
client: client,
}
}
func (g *GroupLocalCache) GetGroupMemberIDs(ctx context.Context, groupID string) ([]string, error) {
resp, err := g.client.Client.GetGroupAbstractInfo(ctx, &group.GetGroupAbstractInfoReq{
GroupIDs: []string{groupID},
})
if err != nil {
return nil, err
}
if len(resp.GroupAbstractInfos) < 1 {
return nil, errs.ErrGroupIDNotFound
}
g.lock.Lock()
defer g.lock.Unlock()
localHashInfo, ok := g.cache[groupID]
if ok && localHashInfo.memberListHash == resp.GroupAbstractInfos[0].GroupMemberListHash {
return localHashInfo.userIDs, nil
}
groupMembersResp, err := g.client.Client.GetGroupMemberUserIDs(ctx, &group.GetGroupMemberUserIDsReq{
GroupID: groupID,
})
if err != nil {
return nil, err
}
g.cache[groupID] = GroupMemberIDsHash{
memberListHash: resp.GroupAbstractInfos[0].GroupMemberListHash,
userIDs: groupMembersResp.UserIDs,
}
return g.cache[groupID].userIDs, nil
}