group

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
 	github.com/lestrrat-go/file-rotatelogs v2.4.0+incompatible // indirect
 	github.com/mitchellh/mapstructure v1.5.0
-	github.com/openimsdk/protocol v0.0.69-alpha.12
+	github.com/openimsdk/protocol v0.0.69-alpha.15
 	github.com/openimsdk/tools v0.0.49-alpha.25
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus/client_golang v1.18.0
@@ -176,3 +176,7 @@ require (
 	golang.org/x/crypto v0.21.0 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 )
+
+//replace (
+//	github.com/openimsdk/protocol => /Users/chao/Desktop/project/protocol
+//)

go.sum

@@ -270,8 +270,8 @@ github.com/onsi/gomega v1.25.0 h1:Vw7br2PCDYijJHSfBOWhov+8cAnUf8MfMaIOV323l6Y=
 github.com/onsi/gomega v1.25.0/go.mod h1:r+zV744Re+DiYCIPRlYOTxn0YkOLcAnW8k1xXdMPGhM=
 github.com/openimsdk/gomake v0.0.13 h1:xLDe/moqgWpRoptHzI4packAWzs4C16b+sVY+txNJp0=
 github.com/openimsdk/gomake v0.0.13/go.mod h1:PndCozNc2IsQIciyn9mvEblYWZwJmAI+06z94EY+csI=
-github.com/openimsdk/protocol v0.0.69-alpha.12 h1:3ZdwmD1y9vcduIC8o2EZS8Ds/fByqcuEFo+NkcBzgRo=
+github.com/openimsdk/protocol v0.0.69-alpha.15 h1:iiVROC2nXTc9qPOSfE7NZckQAVCZiDxBm9yY36ULdyw=
-github.com/openimsdk/protocol v0.0.69-alpha.12/go.mod h1:OZQA9FR55lseYoN2Ql1XAHYKHJGu7OMNkUbuekrKCM8=
+github.com/openimsdk/protocol v0.0.69-alpha.15/go.mod h1:OZQA9FR55lseYoN2Ql1XAHYKHJGu7OMNkUbuekrKCM8=
 github.com/openimsdk/tools v0.0.49-alpha.25 h1:OpRPwDZ2xWX7Zj5kyfZhryu/NfZTrsRVr2GFwu1HQHI=
 github.com/openimsdk/tools v0.0.49-alpha.25/go.mod h1:rwsFI1G/nBHNfiNapbven41akRDPBbH4df0Cgy6xueU=
 github.com/pelletier/go-toml/v2 v2.1.0 h1:FnwAJ4oYMvbT/34k9zzHuZNrhlz48GB3/s6at6/MHO4=

internal/rpc/group/notification.go

@@ -324,6 +324,7 @@ func (g *GroupNotificationSender) GroupInfoSetNotification(ctx context.Context,
 	if err = g.fillOpUser(ctx, &tips.OpUser, tips.Group.GroupID); err != nil {
 		return
 	}
+	g.setVersion(ctx, &tips.GroupMemberVersion, &tips.GroupMemberVersionID, database.GroupMemberVersionName, tips.Group.GroupID)
 	g.Notification(ctx, mcontext.GetOpUserID(ctx), tips.Group.GroupID, constant.GroupInfoSetNotification, tips, rpcclient.WithRpcGetUserName())
 }
 
@@ -337,6 +338,7 @@ func (g *GroupNotificationSender) GroupInfoSetNameNotification(ctx context.Conte
 	if err = g.fillOpUser(ctx, &tips.OpUser, tips.Group.GroupID); err != nil {
 		return
 	}
+	g.setVersion(ctx, &tips.GroupMemberVersion, &tips.GroupMemberVersionID, database.GroupMemberVersionName, tips.Group.GroupID)
 	g.Notification(ctx, mcontext.GetOpUserID(ctx), tips.Group.GroupID, constant.GroupInfoSetNameNotification, tips)
 }
 
@@ -350,6 +352,7 @@ func (g *GroupNotificationSender) GroupInfoSetAnnouncementNotification(ctx conte
 	if err = g.fillOpUser(ctx, &tips.OpUser, tips.Group.GroupID); err != nil {
 		return
 	}
+	g.setVersion(ctx, &tips.GroupMemberVersion, &tips.GroupMemberVersionID, database.GroupMemberVersionName, tips.Group.GroupID)
 	g.Notification(ctx, mcontext.GetOpUserID(ctx), tips.Group.GroupID, constant.GroupInfoSetAnnouncementNotification, tips, rpcclient.WithRpcGetUserName())
 }
 
@@ -636,6 +639,7 @@ func (g *GroupNotificationSender) GroupMutedNotification(ctx context.Context, gr
 	if err = g.fillOpUser(ctx, &tips.OpUser, tips.Group.GroupID); err != nil {
 		return
 	}
+	g.setVersion(ctx, &tips.GroupMemberVersion, &tips.GroupMemberVersionID, database.GroupMemberVersionName, groupID)
 	g.Notification(ctx, mcontext.GetOpUserID(ctx), group.GroupID, constant.GroupMutedNotification, tips)
 }
 
@@ -663,6 +667,7 @@ func (g *GroupNotificationSender) GroupCancelMutedNotification(ctx context.Conte
 	if err = g.fillOpUser(ctx, &tips.OpUser, tips.Group.GroupID); err != nil {
 		return
 	}
+	g.setVersion(ctx, &tips.GroupMemberVersion, &tips.GroupMemberVersionID, database.GroupMemberVersionName, groupID)
 	g.Notification(ctx, mcontext.GetOpUserID(ctx), group.GroupID, constant.GroupCancelMutedNotification, tips)
 }
 

internal/rpc/group/sync.go

@@ -4,10 +4,13 @@ import (
 	"context"
 	"github.com/openimsdk/open-im-server/v3/internal/rpc/incrversion"
 	"github.com/openimsdk/open-im-server/v3/pkg/authverify"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/servererrs"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/storage/model"
 	"github.com/openimsdk/open-im-server/v3/pkg/util/hashutil"
+	"github.com/openimsdk/protocol/constant"
 	pbgroup "github.com/openimsdk/protocol/group"
 	"github.com/openimsdk/protocol/sdkws"
+	"slices"
 )
 
 func (s *groupServer) GetFullGroupMemberUserIDs(ctx context.Context, req *pbgroup.GetFullGroupMemberUserIDsReq) (*pbgroup.GetFullGroupMemberUserIDsResp, error) {
@@ -53,12 +56,36 @@ func (s *groupServer) GetFullJoinGroupIDs(ctx context.Context, req *pbgroup.GetF
 }
 
 func (s *groupServer) GetIncrementalGroupMember(ctx context.Context, req *pbgroup.GetIncrementalGroupMemberReq) (*pbgroup.GetIncrementalGroupMemberResp, error) {
+	group, err := s.db.TakeGroup(ctx, req.GroupID)
+	if err != nil {
+		return nil, err
+	}
+	if group.Status == constant.GroupStatusDismissed {
+		return nil, servererrs.ErrDismissedAlready.Wrap()
+	}
 	opt := incrversion.Option[*sdkws.GroupMemberFullInfo, pbgroup.GetIncrementalGroupMemberResp]{
-		Ctx:             ctx,
+		Ctx:           ctx,
-		VersionKey:      req.GroupID,
+		VersionKey:    req.GroupID,
-		VersionID:       req.VersionID,
+		VersionID:     req.VersionID,
-		VersionNumber:   req.Version,
+		VersionNumber: req.Version,
-		Version:         s.db.FindMemberIncrVersion,
+		Version: func(ctx context.Context, groupID string, version uint, limit int) (*model.VersionLog, error) {
+			vl, err := s.db.FindMemberIncrVersion(ctx, groupID, version, limit)
+			if err != nil {
+				return nil, err
+			}
+			var ok bool
+			vl.Logs = slices.DeleteFunc(vl.Logs, func(elem model.VersionLogElem) bool {
+				if elem.EID == "" {
+					ok = true
+					return true
+				}
+				return false
+			})
+			if !ok {
+				group = nil
+			}
+			return vl, nil
+		},
 		CacheMaxVersion: s.db.FindMaxGroupMemberVersionCache,
 		Find: func(ctx context.Context, ids []string) ([]*sdkws.GroupMemberFullInfo, error) {
 			return s.getGroupMembersInfo(ctx, req.GroupID, ids)
@@ -75,7 +102,22 @@ func (s *groupServer) GetIncrementalGroupMember(ctx context.Context, req *pbgrou
 			}
 		},
 	}
-	return opt.Build()
+	resp, err := opt.Build()
+	if err != nil {
+		return nil, err
+	}
+	if group != nil {
+		count, err := s.db.FindGroupMemberNum(ctx, group.GroupID)
+		if err != nil {
+			return nil, err
+		}
+		owner, err := s.db.TakeGroupOwner(ctx, group.GroupID)
+		if err != nil {
+			return nil, err
+		}
+		resp.Group = s.groupDB2PB(group, owner.UserID, count)
+	}
+	return resp, nil
 }
 
 func (s *groupServer) GetIncrementalJoinGroup(ctx context.Context, req *pbgroup.GetIncrementalJoinGroupReq) (*pbgroup.GetIncrementalJoinGroupResp, error) {

pkg/common/storage/controller/group.go

@@ -243,17 +243,10 @@ func (g *groupDatabase) UpdateGroup(ctx context.Context, groupID string, data ma
 		if err := g.groupDB.UpdateMap(ctx, groupID, data); err != nil {
 			return err
 		}
-		userIDs, err := g.cache.GetGroupMemberIDs(ctx, groupID)
+		if err := g.groupMemberDB.MemberGroupIncrVersion(ctx, groupID, []string{""}, model.VersionStateUpdate); err != nil {
-		if err != nil {
 			return err
 		}
-		for _, userID := range userIDs {
+		return g.cache.CloneGroupCache().DelGroupsInfo(groupID).DelMaxGroupMemberVersion(groupID).ChainExecDel(ctx)
-			if err := g.groupMemberDB.JoinGroupIncrVersion(ctx, userID, []string{groupID}, model.VersionStateUpdate); err != nil {
-				return err
-			}
-
-		}
-		return g.cache.CloneGroupCache().DelGroupsInfo(groupID).DelMaxJoinGroupVersion(userIDs...).ChainExecDel(ctx)
 	})
 }
 
@@ -263,11 +256,11 @@ func (g *groupDatabase) DismissGroup(ctx context.Context, groupID string, delete
 		if err := g.groupDB.UpdateStatus(ctx, groupID, constant.GroupStatusDismissed); err != nil {
 			return err
 		}
-		userIDs, err := g.cache.GetGroupMemberIDs(ctx, groupID)
-		if err != nil {
-			return err
-		}
 		if deleteMember {
+			userIDs, err := g.cache.GetGroupMemberIDs(ctx, groupID)
+			if err != nil {
+				return err
+			}
 			if err := g.groupMemberDB.Delete(ctx, groupID, nil); err != nil {
 				return err
 			}
@@ -277,13 +270,18 @@ func (g *groupDatabase) DismissGroup(ctx context.Context, groupID string, delete
 				DelGroupMembersHash(groupID).
 				DelGroupAllRoleLevel(groupID).
 				DelGroupMembersInfo(groupID, userIDs...).
-				DelMaxGroupMemberVersion(groupID)
+				DelMaxGroupMemberVersion(groupID).
-		}
+				DelMaxJoinGroupVersion(userIDs...)
-		c = c.DelMaxJoinGroupVersion(userIDs...)
+			for _, userID := range userIDs {
-		if len(userIDs) > 0 {
+				if err := g.groupMemberDB.JoinGroupIncrVersion(ctx, userID, []string{groupID}, model.VersionStateDelete); err != nil {
-			if err := g.groupMemberDB.JoinGroupIncrVersion(ctx, groupID, userIDs, model.VersionStateDelete); err != nil {
+					return err
+				}
+			}
+		} else {
+			if err := g.groupMemberDB.MemberGroupIncrVersion(ctx, groupID, []string{""}, model.VersionStateUpdate); err != nil {
 				return err
 			}
+			c = c.DelMaxGroupMemberVersion(groupID)
 		}
 		return c.DelGroupsInfo(groupID).ChainExecDel(ctx)
 	})
@@ -411,12 +409,16 @@ func (g *groupDatabase) TransferGroupOwner(ctx context.Context, groupID string,
 		return c.DelGroupMembersInfo(groupID, oldOwnerUserID, newOwnerUserID).
 			DelGroupAllRoleLevel(groupID).
 			DelGroupMembersHash(groupID).
-			DelJoinedGroupID(oldOwnerUserID, newOwnerUserID).
+			DelMaxGroupMemberVersion(groupID).
+			DelGroupMemberIDs(groupID).
 			ChainExecDel(ctx)
 	})
 }
 
 func (g *groupDatabase) UpdateGroupMember(ctx context.Context, groupID string, userID string, data map[string]any) error {
+	if len(data) == 0 {
+		return nil
+	}
 	return g.ctxTx.Transaction(ctx, func(ctx context.Context) error {
 		if err := g.groupMemberDB.Update(ctx, groupID, userID, data); err != nil {
 			return err
@@ -424,9 +426,9 @@ func (g *groupDatabase) UpdateGroupMember(ctx context.Context, groupID string, u
 		c := g.cache.CloneGroupCache()
 		c = c.DelGroupMembersInfo(groupID, userID)
 		if g.groupMemberDB.IsUpdateRoleLevel(data) {
-			c = c.DelGroupAllRoleLevel(groupID)
+			c = c.DelGroupAllRoleLevel(groupID).DelGroupMemberIDs(groupID)
 		}
-		c = c.DelMaxGroupMemberVersion(groupID).DelMaxJoinGroupVersion(userID)
+		c = c.DelMaxGroupMemberVersion(groupID)
 		return c.ChainExecDel(ctx)
 	})
 }
@@ -439,9 +441,9 @@ func (g *groupDatabase) UpdateGroupMembers(ctx context.Context, data []*common.B
 				return err
 			}
 			if g.groupMemberDB.IsUpdateRoleLevel(item.Map) {
-				c = c.DelGroupAllRoleLevel(item.GroupID)
+				c = c.DelGroupAllRoleLevel(item.GroupID).DelGroupMemberIDs(item.GroupID)
 			}
-			c = c.DelGroupMembersInfo(item.GroupID, item.UserID).DelGroupMembersHash(item.GroupID)
+			c = c.DelGroupMembersInfo(item.GroupID, item.UserID).DelMaxGroupMemberVersion(item.GroupID).DelGroupMembersHash(item.GroupID)
 		}
 		return c.ChainExecDel(ctx)
 	})
@@ -501,14 +503,6 @@ func (g *groupDatabase) FindJoinIncrVersion(ctx context.Context, userID string,
 	return g.groupMemberDB.FindJoinIncrVersion(ctx, userID, version, limit)
 }
 
-//func (g *groupDatabase) FindSortGroupMemberUserIDs(ctx context.Context, groupID string) ([]string, error) {
-//	return g.cache.FindSortGroupMemberUserIDs(ctx, groupID)
-//}
-//
-//func (g *groupDatabase) FindSortJoinGroupIDs(ctx context.Context, userID string) ([]string, error) {
-//	return g.cache.FindSortJoinGroupIDs(ctx, userID)
-//}
-
 func (g *groupDatabase) FindMaxGroupMemberVersionCache(ctx context.Context, groupID string) (*model.VersionLog, error) {
 	return g.cache.FindMaxGroupMemberVersion(ctx, groupID)
 }

pkg/common/storage/database/group_member.go

@@ -35,6 +35,7 @@ type GroupMember interface {
 	FindUserManagedGroupID(ctx context.Context, userID string) (groupIDs []string, err error)
 	IsUpdateRoleLevel(data map[string]any) bool
 	JoinGroupIncrVersion(ctx context.Context, userID string, groupIDs []string, state int32) error
+	MemberGroupIncrVersion(ctx context.Context, groupID string, userIDs []string, state int32) error
 	FindMemberIncrVersion(ctx context.Context, groupID string, version uint, limit int) (*model.VersionLog, error)
 	FindJoinIncrVersion(ctx context.Context, userID string, version uint, limit int) (*model.VersionLog, error)
 }

pkg/common/storage/database/mgo/friend.go

@@ -18,6 +18,8 @@ import (
 	"context"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/storage/database"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/storage/model"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"time"
 
 	"github.com/openimsdk/tools/db/mongoutil"
 	"github.com/openimsdk/tools/db/pagination"
@@ -53,11 +55,19 @@ func NewFriendMongo(db *mongo.Database) (database.Friend, error) {
 }
 
 func (f *FriendMgo) friendSort() any {
-	return bson.D{{"is_pinned", -1}, {"create_time", 1}, {"_id", 1}}
+	return bson.D{{"is_pinned", -1}, {"_id", 1}}
 }
 
 // Create inserts multiple friend records.
 func (f *FriendMgo) Create(ctx context.Context, friends []*model.Friend) error {
+	for i, friend := range friends {
+		if friend.ID.IsZero() {
+			friends[i].ID = primitive.NewObjectID()
+		}
+		if friend.CreateTime.IsZero() {
+			friends[i].CreateTime = time.Now()
+		}
+	}
 	return mongoutil.IncrVersion(func() error {
 		return mongoutil.InsertMany(ctx, f.coll, friends)
 	}, func() error {
@@ -108,13 +118,43 @@ func (f *FriendMgo) UpdateRemark(ctx context.Context, ownerUserID, friendUserID,
 	return f.UpdateByMap(ctx, ownerUserID, friendUserID, map[string]any{"remark": remark})
 }
 
+func (f *FriendMgo) fillTime(friends ...*model.Friend) {
+	for i, friend := range friends {
+		if friend.CreateTime.IsZero() {
+			friends[i].CreateTime = friend.ID.Timestamp()
+		}
+	}
+}
+
+func (f *FriendMgo) findOne(ctx context.Context, filter any) (*model.Friend, error) {
+	friend, err := mongoutil.FindOne[*model.Friend](ctx, f.coll, filter)
+	if err != nil {
+		return nil, err
+	}
+	f.fillTime(friend)
+	return friend, nil
+}
+
+func (f *FriendMgo) find(ctx context.Context, filter any) ([]*model.Friend, error) {
+	friends, err := mongoutil.Find[*model.Friend](ctx, f.coll, filter)
+	if err != nil {
+		return nil, err
+	}
+	f.fillTime(friends...)
+	return friends, nil
+}
+
+func (f *FriendMgo) findPage(ctx context.Context, filter any, pagination pagination.Pagination, opts ...*options.FindOptions) (int64, []*model.Friend, error) {
+	return mongoutil.FindPage[*model.Friend](ctx, f.coll, filter, pagination, opts...)
+}
+
 // Take retrieves a single friend document. Returns an error if not found.
 func (f *FriendMgo) Take(ctx context.Context, ownerUserID, friendUserID string) (*model.Friend, error) {
 	filter := bson.M{
 		"owner_user_id":  ownerUserID,
 		"friend_user_id": friendUserID,
 	}
-	return mongoutil.FindOne[*model.Friend](ctx, f.coll, filter)
+	return f.findOne(ctx, filter)
 }
 
 // FindUserState finds the friendship status between two users.
@@ -125,7 +165,7 @@ func (f *FriendMgo) FindUserState(ctx context.Context, userID1, userID2 string)
 			{"owner_user_id": userID2, "friend_user_id": userID1},
 		},
 	}
-	return mongoutil.Find[*model.Friend](ctx, f.coll, filter)
+	return f.find(ctx, filter)
 }
 
 // FindFriends retrieves a list of friends for a given owner. Missing friends do not cause an error.
@@ -134,7 +174,7 @@ func (f *FriendMgo) FindFriends(ctx context.Context, ownerUserID string, friendU
 		"owner_user_id":  ownerUserID,
 		"friend_user_id": bson.M{"$in": friendUserIDs},
 	}
-	return mongoutil.Find[*model.Friend](ctx, f.coll, filter)
+	return f.find(ctx, filter)
 }
 
 // FindReversalFriends finds users who have added the specified user as a friend.
@@ -143,14 +183,14 @@ func (f *FriendMgo) FindReversalFriends(ctx context.Context, friendUserID string
 		"owner_user_id":  bson.M{"$in": ownerUserIDs},
 		"friend_user_id": friendUserID,
 	}
-	return mongoutil.Find[*model.Friend](ctx, f.coll, filter)
+	return f.find(ctx, filter)
 }
 
 // FindOwnerFriends retrieves a paginated list of friends for a given owner.
 func (f *FriendMgo) FindOwnerFriends(ctx context.Context, ownerUserID string, pagination pagination.Pagination) (int64, []*model.Friend, error) {
 	filter := bson.M{"owner_user_id": ownerUserID}
 	opt := options.Find().SetSort(f.friendSort())
-	return mongoutil.FindPage[*model.Friend](ctx, f.coll, filter, pagination, opt)
+	return f.findPage(ctx, filter, pagination, opt)
 }
 
 func (f *FriendMgo) FindOwnerFriendUserIds(ctx context.Context, ownerUserID string, limit int) ([]string, error) {
@@ -162,7 +202,8 @@ func (f *FriendMgo) FindOwnerFriendUserIds(ctx context.Context, ownerUserID stri
 // FindInWhoseFriends finds users who have added the specified user as a friend, with pagination.
 func (f *FriendMgo) FindInWhoseFriends(ctx context.Context, friendUserID string, pagination pagination.Pagination) (int64, []*model.Friend, error) {
 	filter := bson.M{"friend_user_id": friendUserID}
-	return mongoutil.FindPage[*model.Friend](ctx, f.coll, filter, pagination)
+	opt := options.Find().SetSort(f.friendSort())
+	return f.findPage(ctx, filter, pagination, opt)
 }
 
 // FindFriendUserIDs retrieves a list of friend user IDs for a given owner.
@@ -203,18 +244,3 @@ func (f *FriendMgo) FindFriendUserID(ctx context.Context, friendUserID string) (
 	}
 	return mongoutil.Find[string](ctx, f.coll, filter, options.Find().SetProjection(bson.M{"_id": 0, "owner_user_id": 1}).SetSort(f.friendSort()))
 }
-
-//func (f *FriendMgo) SearchFriend(ctx context.Context, ownerUserID, keyword string, pagination pagination.Pagination) (int64, []*model.Friend, error) {
-//	filter := bson.M{
-//		"owner_user_id": ownerUserID,
-//	}
-//	if keyword != "" {
-//		filter["$or"] = []bson.M{
-//			{"remark": bson.M{"$regex": keyword, "$options": "i"}},
-//			{"nickname": bson.M{"$regex": keyword, "$options": "i"}},
-//			{"friend_user_id": bson.M{"$regex": keyword, "$options": "i"}},
-//		}
-//	}
-//	opt := options.Find().SetSort(f.friendSort())
-//	return mongoutil.FindPage[*model.Friend](ctx, f.coll, filter, pagination, opt)
-//}

pkg/common/storage/database/mgo/group_member.go

@@ -117,8 +117,6 @@ func (g *GroupMemberMgo) UpdateRoleLevel(ctx context.Context, groupID string, us
 		return g.Update(ctx, groupID, userID, bson.M{"role_level": roleLevel})
 	}, func() error {
 		return g.member.IncrVersion(ctx, groupID, []string{userID}, model.VersionStateUpdate)
-	}, func() error {
-		return g.join.IncrVersion(ctx, userID, []string{groupID}, model.VersionStateUpdate)
 	})
 }
 
@@ -184,6 +182,10 @@ func (g *GroupMemberMgo) JoinGroupIncrVersion(ctx context.Context, userID string
 	return g.join.IncrVersion(ctx, userID, groupIDs, state)
 }
 
+func (g *GroupMemberMgo) MemberGroupIncrVersion(ctx context.Context, groupID string, userIDs []string, state int32) error {
+	return g.member.IncrVersion(ctx, groupID, userIDs, state)
+}
+
 func (g *GroupMemberMgo) FindMemberIncrVersion(ctx context.Context, groupID string, version uint, limit int) (*model.VersionLog, error) {
 	return g.member.FindChangeLog(ctx, groupID, version, limit)
 }

pkg/common/storage/model/friend.go

@@ -15,17 +15,19 @@
 package model
 
 import (
+	"go.mongodb.org/mongo-driver/bson/primitive"
 	"time"
 )
 
 // Friend represents the data structure for a friend relationship in MongoDB.
 type Friend struct {
-	OwnerUserID    string    `bson:"owner_user_id"`
+	ID             primitive.ObjectID `bson:"_id"`
-	FriendUserID   string    `bson:"friend_user_id"`
+	OwnerUserID    string             `bson:"owner_user_id"`
-	Remark         string    `bson:"remark"`
+	FriendUserID   string             `bson:"friend_user_id"`
-	CreateTime     time.Time `bson:"create_time"`
+	Remark         string             `bson:"remark"`
-	AddSource      int32     `bson:"add_source"`
+	CreateTime     time.Time          `bson:"create_time"`
-	OperatorUserID string    `bson:"operator_user_id"`
+	AddSource      int32              `bson:"add_source"`
-	Ex             string    `bson:"ex"`
+	OperatorUserID string             `bson:"operator_user_id"`
-	IsPinned       bool      `bson:"is_pinned"`
+	Ex             string             `bson:"ex"`
+	IsPinned       bool               `bson:"is_pinned"`
 }