refactor(group): optimize group notification and cache handling

- Improve notification sender with bulk operations and fallback logic
- Enhance group cache with new methods for member counts and version handling
- Refactor group controller with better cache integration
- Add more robust error handling and logging

fix(group): optimize group cache implementation

This commit refactors the GroupCacheRedis implementation to improve code organization and maintainability. The changes include:

- Added proper import organization and removed unused imports
- Implemented batchGetCache2 function calls for efficient data retrieval
- Added comprehensive cache key management functions
- Improved version tracking for group members and requests
- Enhanced error handling and logging
- Added batch operations for better performance
- Refactored complex functions into smaller, more manageable pieces

The changes focus on improving the overall structure and performance of the group cache system while maintaining backward compatibility.

refactor(group): improve notification error handling and add admin context

- Convert notification methods to return errors for better error propagation
- Add admin context checking for bulk notifications
- Enhance group info retrieval with proper error handling
- Improve notification sender with fallback user information

fix(group): handle nil group member map in notification

Add nil check for groupMemberMap[groupInfo.GroupID] before accessing to prevent nil pointer panic. Skip iteration if map is nil.

refactor(group): update group notification methods to use UserInfo struct

Renamed function parameter from groupMemberUserID string to changedUserInfo *sdkws.UserInfo
Updated function logic to use changedUserInfo.UserID instead of separate parameter
Refactored notification methods to use consistent UserInfo struct pattern
Added proper error handling for opUser retrieval
Updated function signatures and internal logic for GroupMemberInfoSetNotificationBulk

fix: batchGetGroupRoleLevelMemberIDs with BatchCache

fix: GetGroupMemberNums BatchCache

perf(group): optimize notification logic for group member operations

# Conflicts:
#	internal/rpc/group/group.go
#	pkg/common/storage/cache/redis/group.go

# Conflicts:
#	internal/rpc/group/group.go
#	pkg/common/storage/cache/redis/group.go

internal/rpc/group/group.go

@@ -24,6 +24,8 @@ import (
 	"time"
 
 	"github.com/openimsdk/open-im-server/v3/pkg/rpcli"
+	"github.com/openimsdk/tools/utils/stringutil"
+	"google.golang.org/grpc"
 
 	"github.com/openimsdk/open-im-server/v3/pkg/common/config"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/storage/common"
@@ -53,7 +55,6 @@ import (
 	"github.com/openimsdk/tools/mw/specialerror"
 	"github.com/openimsdk/tools/utils/datautil"
 	"github.com/openimsdk/tools/utils/encrypt"
-	"google.golang.org/grpc"
 )
 
 type groupServer struct {
@@ -147,8 +148,8 @@ func (s *groupServer) NotificationUserInfoUpdate(ctx context.Context, req *pbgro
 			return nil, err
 		}
 	}
-	for _, groupID := range groupIDs {
-		s.notification.GroupMemberInfoSetNotification(ctx, groupID, req.UserID)
+	if err = s.notification.GroupMemberInfoSetNotificationBulk(ctx, groupIDs, req.NewUserInfo); err != nil {
+		log.ZError(ctx, stringutil.GetFuncName(1)+" failed", err)
 	}
 	if err = s.db.DeleteGroupMemberHash(ctx, groupIDs); err != nil {
 		return nil, err

internal/rpc/group/notification.go

@@ -803,6 +803,182 @@ func (g *NotificationSender) GroupCancelMutedNotification(ctx context.Context, g
 	g.Notification(ctx, mcontext.GetOpUserID(ctx), group.GroupID, constant.GroupCancelMutedNotification, tips)
 }
 
+func (g *NotificationSender) getPublicUserInfos(ctx context.Context, userIDs []string) ([]*sdkws.PublicUserInfo, error) {
+	users, err := g.getUsersInfo(ctx, userIDs)
+	if err != nil {
+		return nil, err
+	}
+	userMap := make(map[string]common_user.CommonUser)
+	for _, user := range users {
+		userMap[user.GetUserID()] = user
+	}
+	for _, userID := range userIDs {
+		if _, ok := userMap[userID]; !ok {
+			return nil, servererrs.ErrUserIDNotFound.WrapMsg(fmt.Sprintf("user %s not found", userID))
+		}
+	}
+
+	return datautil.Slice(users, func(e common_user.CommonUser) *sdkws.PublicUserInfo {
+		return &sdkws.PublicUserInfo{
+			UserID:   e.GetUserID(),
+			Nickname: e.GetNickname(),
+			FaceURL:  e.GetFaceURL(),
+			Ex:       e.GetEx(),
+		}
+	}), nil
+}
+
+func (g *NotificationSender) getGroupMembersForUser(ctx context.Context, groupIDs []string, userID string) ([]*sdkws.GroupMemberFullInfo, error) {
+	members, err := g.db.FindGroupMemberUser(ctx, groupIDs, userID)
+	if err != nil {
+		return nil, err
+	}
+	if err := g.PopulateGroupMember(ctx, members...); err != nil {
+		return nil, err
+	}
+	log.ZDebug(ctx, "getGroupMembers", "members", members)
+	return datautil.Slice(members, func(e *model.GroupMember) *sdkws.GroupMemberFullInfo { return g.groupMemberDB2PB(e, 0) }), nil
+}
+
+func (g *NotificationSender) getGroupMemberMapForUser(ctx context.Context, groupIDs []string, userID string) (map[string]*sdkws.GroupMemberFullInfo, error) {
+	members, err := g.getGroupMembersForUser(ctx, groupIDs, userID)
+	if err != nil {
+		return nil, err
+	}
+	m := make(map[string]*sdkws.GroupMemberFullInfo)
+	for i, member := range members {
+		m[member.GroupID] = members[i]
+	}
+	return m, nil
+}
+
+func (g *NotificationSender) migrateFallbackToGroupMemberFullInfo(groupMemberFullInfo *sdkws.GroupMemberFullInfo, publicUserInfo *sdkws.PublicUserInfo) *sdkws.GroupMemberFullInfo {
+	if groupMemberFullInfo == nil {
+		groupMemberFullInfo = &sdkws.GroupMemberFullInfo{}
+	}
+	if publicUserInfo == nil {
+		publicUserInfo = &sdkws.PublicUserInfo{}
+	}
+
+	firstNotEmpty := func(s ...string) string {
+		for _, s := range s {
+			if s != "" {
+				return s
+			}
+		}
+		return ""
+	}
+
+	return &sdkws.GroupMemberFullInfo{
+		GroupID:        groupMemberFullInfo.GroupID,
+		UserID:         firstNotEmpty(groupMemberFullInfo.UserID, publicUserInfo.UserID),
+		RoleLevel:      groupMemberFullInfo.RoleLevel,
+		JoinTime:       groupMemberFullInfo.JoinTime,
+		Nickname:       firstNotEmpty(groupMemberFullInfo.Nickname, publicUserInfo.Nickname),
+		FaceURL:        firstNotEmpty(groupMemberFullInfo.FaceURL, publicUserInfo.FaceURL),
+		AppMangerLevel: groupMemberFullInfo.AppMangerLevel,
+		JoinSource:     groupMemberFullInfo.JoinSource,
+		OperatorUserID: firstNotEmpty(groupMemberFullInfo.OperatorUserID, publicUserInfo.UserID),
+		InviterUserID:  groupMemberFullInfo.InviterUserID,
+		Ex:             groupMemberFullInfo.Ex,
+		MuteEndTime:    groupMemberFullInfo.MuteEndTime,
+	}
+}
+
+func (g *NotificationSender) getGroupInfos(ctx context.Context, groupIDs []string) ([]*sdkws.GroupInfo, error) {
+	var err error
+	defer func() {
+		if err != nil {
+			log.ZError(ctx, stringutil.GetFuncName(1)+" failed", err)
+		}
+	}()
+
+	groups, err := g.db.FindGroup(ctx, groupIDs)
+	if err != nil {
+		return nil, err
+	}
+	numMap, err := g.db.FindGroupMemberNums(ctx, groupIDs)
+	if err != nil {
+		return nil, err
+	}
+	owners, err := g.db.FindGroupsOwner(ctx, groupIDs)
+	if err != nil {
+		return nil, err
+	}
+	ownerMap := make(map[string]string)
+	for _, owner := range owners {
+		ownerMap[owner.GroupID] = owner.UserID
+	}
+
+	return datautil.Slice(groups, func(group *model.Group) *sdkws.GroupInfo {
+		return convert.Db2PbGroupInfo(group, ownerMap[group.GroupID], numMap[group.GroupID])
+	}), nil
+}
+
+func (g *NotificationSender) GroupMemberInfoSetNotificationBulk(ctx context.Context, groupIDs []string, changedUserInfo *sdkws.UserInfo) error {
+	opUserID := mcontext.GetOpUserID(ctx)
+	opIsAdmin := authverify.CheckUserIsAdmin(ctx, opUserID)
+
+	groupInfos, err := g.getGroupInfos(ctx, groupIDs)
+	if err != nil {
+		return err
+	}
+
+	groupMemberMap, err := g.getGroupMemberMapForUser(ctx, groupIDs, changedUserInfo.UserID)
+	if err != nil {
+		return err
+	}
+
+	opMemberMap := groupMemberMap
+	if opUserID != changedUserInfo.UserID {
+		opMemberMap, err = g.getGroupMemberMapForUser(ctx, groupIDs, opUserID)
+		if err != nil {
+			return err
+		}
+	}
+
+	opPublicUser := &sdkws.PublicUserInfo{
+		UserID:   changedUserInfo.GetUserID(),
+		Nickname: changedUserInfo.GetNickname(),
+		FaceURL:  changedUserInfo.GetFaceURL(),
+		Ex:       changedUserInfo.GetEx(),
+	}
+	if opUserID != changedUserInfo.UserID {
+		opPublicUser, err = g.getUser(ctx, opUserID)
+		if err != nil {
+			return err
+		}
+	}
+
+	for _, groupInfo := range groupInfos {
+		if groupMemberMap[groupInfo.GroupID] == nil {
+			continue
+		}
+
+		opUserGroupMemberFullInfo := datautil.If(opIsAdmin, &sdkws.GroupMemberFullInfo{
+			GroupID:        groupInfo.GroupID,
+			UserID:         opUserID,
+			RoleLevel:      constant.GroupAdmin,
+			AppMangerLevel: constant.AppAdmin,
+		}, opMemberMap[groupInfo.GroupID])
+		if opUserGroupMemberFullInfo == nil {
+			opUserGroupMemberFullInfo = &sdkws.GroupMemberFullInfo{}
+		}
+		opUserGroupMemberFullInfo.GroupID = groupInfo.GroupID
+
+		tips := &sdkws.GroupMemberInfoSetTips{
+			Group:       groupInfo,
+			OpUser:      g.migrateFallbackToGroupMemberFullInfo(opUserGroupMemberFullInfo, opPublicUser),
+			ChangedUser: groupMemberMap[groupInfo.GroupID],
+		}
+
+		g.setSortVersion(ctx, &tips.GroupMemberVersion, &tips.GroupMemberVersionID, database.GroupMemberVersionName, tips.Group.GroupID, &tips.GroupSortVersion)
+		g.Notification(ctx, opUserID, groupInfo.GroupID, constant.GroupMemberInfoSetNotification, tips)
+	}
+
+	return nil
+}
+
 func (g *NotificationSender) GroupMemberInfoSetNotification(ctx context.Context, groupID, groupMemberUserID string) {
 	var err error
 	defer func() {
@@ -810,13 +986,11 @@ func (g *NotificationSender) GroupMemberInfoSetNotification(ctx context.Context,
 			log.ZError(ctx, stringutil.GetFuncName(1)+" failed", err)
 		}
 	}()
-	var group *sdkws.GroupInfo
-	group, err = g.getGroupInfo(ctx, groupID)
+	group, err := g.getGroupInfo(ctx, groupID)
 	if err != nil {
 		return
 	}
-	var user map[string]*sdkws.GroupMemberFullInfo
-	user, err = g.getGroupMemberMap(ctx, groupID, []string{groupMemberUserID})
+	user, err := g.getGroupMemberMap(ctx, groupID, []string{groupMemberUserID})
 	if err != nil {
 		return
 	}
@@ -835,8 +1009,7 @@ func (g *NotificationSender) GroupMemberSetToAdminNotification(ctx context.Conte
 			log.ZError(ctx, stringutil.GetFuncName(1)+" failed", err)
 		}
 	}()
-	var group *sdkws.GroupInfo
-	group, err = g.getGroupInfo(ctx, groupID)
+	group, err := g.getGroupInfo(ctx, groupID)
 	if err != nil {
 		return
 	}
@@ -859,13 +1032,11 @@ func (g *NotificationSender) GroupMemberSetToOrdinaryUserNotification(ctx contex
 			log.ZError(ctx, stringutil.GetFuncName(1)+" failed", err)
 		}
 	}()
-	var group *sdkws.GroupInfo
-	group, err = g.getGroupInfo(ctx, groupID)
+	group, err := g.getGroupInfo(ctx, groupID)
 	if err != nil {
 		return
 	}
-	var user map[string]*sdkws.GroupMemberFullInfo
-	user, err = g.getGroupMemberMap(ctx, groupID, []string{mcontext.GetOpUserID(ctx), groupMemberUserID})
+	user, err := g.getGroupMemberMap(ctx, groupID, []string{mcontext.GetOpUserID(ctx), groupMemberUserID})
 	if err != nil {
 		return
 	}

pkg/common/storage/cache/group.go

@@ -57,6 +57,7 @@ type GroupCache interface {
 	GetGroupRoleLevelMemberInfo(ctx context.Context, groupID string, roleLevel int32) ([]*model.GroupMember, error)
 	GetGroupRolesLevelMemberInfo(ctx context.Context, groupID string, roleLevels []int32) ([]*model.GroupMember, error)
 	GetGroupMemberNum(ctx context.Context, groupID string) (memberNum int64, err error)
+	GetGroupMemberNums(ctx context.Context, groupIDs []string) (memberNumMap map[string]int64, err error)
 	DelGroupsMemberNum(groupID ...string) GroupCache
 
 	//FindSortGroupMemberUserIDs(ctx context.Context, groupID string) ([]string, error)

pkg/common/storage/cache/redis/group.go

@@ -16,10 +16,13 @@ package redis
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"time"
 
 	"github.com/dtm-labs/rockscache"
+	"github.com/openimsdk/tools/utils/datautil"
+
 	"github.com/openimsdk/open-im-server/v3/pkg/common/config"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/storage/cache"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/storage/cache/cachekey"
@@ -286,6 +289,57 @@ func (g *GroupCacheRedis) GetGroupMemberNum(ctx context.Context, groupID string)
 	})
 }
 
+type groupMemberNumCache struct {
+	GroupID   string `json:"group_id"`
+	MemberNum int64  `json:"member_num"`
+}
+
+type groupMemberNumBatchCache struct {
+	GroupID   string
+	MemberNum int64
+}
+
+func (r *groupMemberNumBatchCache) BatchCache(groupID string) {
+	r.GroupID = groupID
+}
+func (r *groupMemberNumBatchCache) UnmarshalJSON(bytes []byte) error {
+	return json.Unmarshal(bytes, &r.MemberNum)
+}
+func (r *groupMemberNumBatchCache) MarshalJSON() ([]byte, error) {
+	return json.Marshal(r.MemberNum)
+}
+func (g *GroupCacheRedis) GetGroupMemberNums(ctx context.Context, groupIDs []string) (map[string]int64, error) {
+	items, err := batchGetCache2(
+		ctx,
+		g.rcClient,
+		g.expireTime,
+		groupIDs,
+		func(groupID string) string { return g.getGroupMemberNumKey(groupID) },
+		func(v *groupMemberNumBatchCache) string { return v.GroupID },
+		func(ctx context.Context, ids []string) ([]*groupMemberNumBatchCache, error) {
+			res := make([]*groupMemberNumBatchCache, 0, len(ids))
+			for _, groupID := range ids {
+				num, err := g.groupMemberDB.TakeGroupMemberNum(ctx, groupID)
+				if err != nil {
+					return nil, err
+				}
+				res = append(res, &groupMemberNumBatchCache{
+					GroupID:   groupID,
+					MemberNum: num,
+				})
+			}
+			return res, nil
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	return datautil.SliceToMapAny(items, func(item *groupMemberNumBatchCache) (string, int64) {
+		return item.GroupID, item.MemberNum
+	}), nil
+}
+
 func (g *GroupCacheRedis) DelGroupsMemberNum(groupID ...string) cache.GroupCache {
 	keys := make([]string, 0, len(groupID))
 	for _, groupID := range groupID {
@@ -308,18 +362,111 @@ func (g *GroupCacheRedis) GetGroupOwner(ctx context.Context, groupID string) (*m
 	return members[0], nil
 }
 
+type groupRoleLevelMemberIDsBatchCache struct {
+	GroupID string
+	UserIDs []string
+}
+
+func (r *groupRoleLevelMemberIDsBatchCache) BatchCache(groupID string) {
+	r.GroupID = groupID
+}
+func (r *groupRoleLevelMemberIDsBatchCache) UnmarshalJSON(bytes []byte) (err error) {
+	return json.Unmarshal(bytes, &r.UserIDs)
+}
+func (r *groupRoleLevelMemberIDsBatchCache) MarshalJSON() ([]byte, error) {
+	return json.Marshal(r.UserIDs)
+}
+
+func (g *GroupCacheRedis) batchGetGroupRoleLevelMemberIDs(ctx context.Context, groupIDs []string, roleLevel int32) (map[string][]string, error) {
+	items, err := batchGetCache2(
+		ctx,
+		g.rcClient,
+		g.expireTime,
+		groupIDs,
+		func(groupID string) string {
+			return g.getGroupRoleLevelMemberIDsKey(groupID, roleLevel)
+		},
+		func(v *groupRoleLevelMemberIDsBatchCache) string {
+			return v.GroupID
+		},
+		func(ctx context.Context, ids []string) ([]*groupRoleLevelMemberIDsBatchCache, error) {
+			res := make([]*groupRoleLevelMemberIDsBatchCache, 0, len(ids))
+			for _, groupID := range ids {
+				userIDs, err := g.groupMemberDB.FindRoleLevelUserIDs(ctx, groupID, roleLevel)
+				if err != nil {
+					return nil, err
+				}
+				res = append(res, &groupRoleLevelMemberIDsBatchCache{
+					GroupID: groupID,
+					UserIDs: userIDs,
+				})
+			}
+			return res, nil
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	return datautil.SliceToMapAny(items, func(item *groupRoleLevelMemberIDsBatchCache) (string, []string) {
+		return item.GroupID, item.UserIDs
+	}), nil
+}
+
+type groupUserIDPair struct {
+	GroupID string
+	UserID  string
+}
+
+func (g *GroupCacheRedis) batchGetGroupMembersByPairs(ctx context.Context, ids []groupUserIDPair) ([]*model.GroupMember, error) {
+	return batchGetCache2(ctx, g.rcClient, g.expireTime, ids, func(id groupUserIDPair) string {
+		return g.getGroupMemberInfoKey(id.GroupID, id.UserID)
+	}, func(member *model.GroupMember) groupUserIDPair {
+		return groupUserIDPair{GroupID: member.GroupID, UserID: member.UserID}
+	}, func(ctx context.Context, ids []groupUserIDPair) ([]*model.GroupMember, error) {
+		groupIDsByUser := make(map[string][]string)
+		for _, id := range ids {
+			groupIDsByUser[id.UserID] = append(groupIDsByUser[id.UserID], id.GroupID)
+		}
+		members := make([]*model.GroupMember, 0, len(ids))
+		for userID, groupIDs := range groupIDsByUser {
+			items, err := g.groupMemberDB.FindInGroup(ctx, userID, groupIDs)
+			if err != nil {
+				return nil, err
+			}
+			members = append(members, items...)
+		}
+		return members, nil
+	})
+}
+
 func (g *GroupCacheRedis) GetGroupsOwner(ctx context.Context, groupIDs []string) ([]*model.GroupMember, error) {
-	members := make([]*model.GroupMember, 0, len(groupIDs))
+	ownerIDs, err := g.batchGetGroupRoleLevelMemberIDs(ctx, groupIDs, constant.GroupOwner)
+	if err != nil {
+		return nil, err
+	}
+	pairs := make([]groupUserIDPair, 0, len(groupIDs))
 	for _, groupID := range groupIDs {
-		items, err := g.GetGroupRoleLevelMemberInfo(ctx, groupID, constant.GroupOwner)
-		if err != nil {
-			return nil, err
+		ids := ownerIDs[groupID]
+		if len(ids) == 0 {
+			continue
 		}
-		if len(items) > 0 {
-			members = append(members, items[0])
+		pairs = append(pairs, groupUserIDPair{GroupID: groupID, UserID: ids[0]})
+	}
+	members, err := g.batchGetGroupMembersByPairs(ctx, pairs)
+	if err != nil {
+		return nil, err
+	}
+	memberMap := datautil.SliceToMapAny(members, func(member *model.GroupMember) (groupUserIDPair, *model.GroupMember) {
+		return groupUserIDPair{GroupID: member.GroupID, UserID: member.UserID}, member
+	})
+	result := make([]*model.GroupMember, 0, len(pairs))
+	for _, pair := range pairs {
+		if member, ok := memberMap[pair]; ok {
+			result = append(result, member)
 		}
 	}
-	return members, nil
+	return result, nil
 }
 
 func (g *GroupCacheRedis) GetGroupRoleLevelMemberIDs(ctx context.Context, groupID string, roleLevel int32) ([]string, error) {

pkg/common/storage/controller/group.go

@@ -65,6 +65,8 @@ type GroupDatabase interface {
 	FindGroupMemberUserID(ctx context.Context, groupID string) ([]string, error)
 	// FindGroupMemberNum retrieves the number of members in a group.
 	FindGroupMemberNum(ctx context.Context, groupID string) (uint32, error)
+	// FindGroupMemberNums retrieves the number of members for multiple groups.
+	FindGroupMemberNums(ctx context.Context, groupIDs []string) (map[string]uint32, error)
 	// FindUserManagedGroupID retrieves group IDs managed by a user.
 	FindUserManagedGroupID(ctx context.Context, userID string) (groupIDs []string, err error)
 	// PageGroupRequest paginates through group requests for specified groups.
@@ -233,6 +235,18 @@ func (g *groupDatabase) FindGroupMemberNum(ctx context.Context, groupID string)
 	return uint32(num), nil
 }
 
+func (g *groupDatabase) FindGroupMemberNums(ctx context.Context, groupIDs []string) (map[string]uint32, error) {
+	nums, err := g.cache.GetGroupMemberNums(ctx, groupIDs)
+	if err != nil {
+		return nil, err
+	}
+	result := make(map[string]uint32, len(nums))
+	for groupID, num := range nums {
+		result[groupID] = uint32(num)
+	}
+	return result, nil
+}
+
 func (g *groupDatabase) TakeGroup(ctx context.Context, groupID string) (*model.Group, error) {
 	return g.cache.GetGroupInfo(ctx, groupID)
 }