497 lines
11 KiB
Go
497 lines
11 KiB
Go
package core
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import (
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"context"
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"encoding/gob"
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"encoding/json"
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"errors"
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"fmt"
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"net/url"
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"time"
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"github.com/go-redis/redis/v8"
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"repositories.action2quare.com/ayo/gocommon"
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"repositories.action2quare.com/ayo/gocommon/logger"
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"repositories.action2quare.com/ayo/gocommon/wshandler"
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"go.mongodb.org/mongo-driver/bson"
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"go.mongodb.org/mongo-driver/bson/primitive"
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)
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type accountID = primitive.ObjectID
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type ticketID = primitive.ObjectID
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type groupID = primitive.ObjectID
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type Body = bson.M
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func init() {
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gob.Register(memberDoc{})
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}
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func makeTid(gid groupID, in accountID) string {
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var out primitive.ObjectID
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for i := range in {
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out[12-i-1] = gid[i] ^ in[12-i-1]
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}
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return out.Hex()
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}
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type Invitation struct {
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GroupID groupID `json:"_gid"`
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TicketID string `json:"_tid"`
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Inviter bson.M `json:"_inviter"` // memberDoc.Body
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ExpireAtUTC int64 `json:"_expire_at_utc"`
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}
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// 플레이어한테 공유하는 멤버 정보
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type memberDoc struct {
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Body `json:",inline"`
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Invite bool `json:"_invite"`
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InviteExpire int64 `json:"_invite_exp"`
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}
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type InvitationFail bson.M
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type groupDoc struct {
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Body `json:",inline"`
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Members map[string]*memberDoc `json:"_members"`
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InCharge string `json:"_incharge"`
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rh *RedisonHandler
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id groupID
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idhex string
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}
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type groupDocWithId struct {
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*groupDoc `json:",inline"`
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Gid string `json:"_gid"`
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}
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func (gd *groupDoc) strid() string {
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if len(gd.idhex) == 0 {
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gd.idhex = gd.id.Hex()
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}
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return gd.idhex
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}
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func (gd *groupDoc) tid(in accountID) string {
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return makeTid(gd.id, in)
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}
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func (gd *groupDoc) mid(tid string) accountID {
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tidobj, _ := primitive.ObjectIDFromHex(tid)
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var out primitive.ObjectID
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for i := range tidobj {
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out[12-i-1] = gd.id[i] ^ tidobj[12-i-1]
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}
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return out
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}
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func (gd *groupDoc) addInvite(inviteeDoc bson.M, ttl time.Duration, max int) (*memberDoc, error) {
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targetmid := inviteeDoc["_mid"].(accountID)
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targetbody := inviteeDoc["body"].(bson.M)
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// 초대 가능한 빈 자리가 있나
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tids, err := gd.rh.JSONObjKeys(gd.strid(), "$._members")
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if err != nil {
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return nil, err
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}
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now := time.Now().UTC()
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createNewDoc := func() *memberDoc {
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return &memberDoc{
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Body: targetbody,
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Invite: true,
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InviteExpire: now.Add(ttl).Unix(),
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}
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}
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newtid := gd.tid(targetmid)
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if len(tids) < max {
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// 빈자리를 찾았다.
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newdoc := createNewDoc()
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_, err := gd.rh.JSONSet(gd.strid(), "$._members."+newtid, newdoc)
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return newdoc, err
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}
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expires, err := gd.rh.JSONGetInt64(gd.strid(), "$._members.._invite_exp")
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if err != nil {
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return nil, err
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}
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var delpaths []string
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for i, expire := range expires {
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if expire < now.Unix() {
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// 만료된 초대가 있네? 지우자
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delpaths = append(delpaths, "$._members."+tids[i])
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}
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}
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if len(delpaths) == 0 {
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// 빈자리가 없다
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return nil, nil
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}
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if err := gd.rh.JSONMDel(gd.strid(), delpaths); err != nil {
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return nil, err
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}
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newdoc := createNewDoc()
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_, err = gd.rh.JSONSet(gd.strid(), "$._members."+newtid, newdoc)
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return newdoc, err
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}
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func (gd *groupDoc) addMember(mid accountID, doc bson.M) (*memberDoc, error) {
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memdoc := &memberDoc{
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Body: doc,
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Invite: false,
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InviteExpire: 0,
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}
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if _, err := gd.rh.JSONSet(gd.strid(), "$._members."+gd.tid(mid), memdoc, SetOptionXX); err != nil {
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return nil, err
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}
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return memdoc, nil
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}
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func (gd *groupDoc) removeMember(mid accountID) error {
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_, err := gd.rh.JSONDel(gd.strid(), "$._members."+gd.tid(mid))
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return err
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}
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type groupInMemory struct {
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*groupConfig
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sendUpstreamMessage func(*wshandler.UpstreamMessage)
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sendEnterRoomMessage func(groupID, accountID)
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sendLeaveRoomMessage func(groupID, accountID)
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rh *RedisonHandler
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}
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func (gm *groupInMemory) createGroup(newid groupID, charge accountID, chargeDoc bson.M) (*groupDoc, error) {
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tid := makeTid(newid, charge)
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gd := &groupDoc{
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Body: bson.M{},
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Members: map[string]*memberDoc{
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tid: {
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Body: chargeDoc,
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Invite: false,
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InviteExpire: 0,
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},
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},
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InCharge: tid,
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rh: gm.rh,
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id: newid,
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}
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_, err := gm.rh.JSONSet(gd.strid(), "$", gd, SetOptionNX)
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if err != nil {
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return nil, err
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}
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return gd, nil
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}
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func (gm *groupInMemory) find(id groupID) (*groupDoc, error) {
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if id.IsZero() {
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return nil, nil
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}
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_, err := gm.rh.JSONObjLen(id.Hex(), "$")
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if err == redis.Nil {
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return nil, nil
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}
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if err != nil {
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return nil, err
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}
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return &groupDoc{
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rh: gm.rh,
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id: id,
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}, nil
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}
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func (gm *groupInMemory) Create(form url.Values, base bson.M) (groupID, error) {
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return primitive.NilObjectID, nil
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}
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func (gm *groupInMemory) Candidate(gid groupID, mid accountID, doc bson.M) error {
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logger.Error("not implemented func : Canidate")
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return nil
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}
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var errGroupNotExist = errors.New("group does not exist")
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func (gm *groupInMemory) Join(gid groupID, mid accountID, doc bson.M) error {
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group, err := gm.find(gid)
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if err != nil {
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return err
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}
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if group == nil {
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// 그룹이 없다. 실패
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return errGroupNotExist
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}
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// 내 정보 업데이트할 때에도 사용됨
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_, err = group.addMember(mid, doc)
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return err
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}
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var errInviteeDocMidMissing = errors.New("inviteeDoc must have '_mid' field")
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var errAlreadyInvited = errors.New("this target is already invited by someone or me")
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func (gm *groupInMemory) Invite(gid groupID, mid accountID, inviterDoc bson.M, inviteeDoc bson.M) (string, error) {
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targetid, ok := inviteeDoc["_mid"].(accountID)
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if !ok {
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return "", errInviteeDocMidMissing
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}
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// targetid에 초대한 mid가 들어있다.
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already, err := gm.rh.Get(gm.rh.ctx, targetid.Hex()).Result()
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if err != nil && err != redis.Nil {
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return "", err
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}
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if len(already) > 0 {
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if already != mid.Hex() {
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// 이미 초대 중이다.
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// inviter한테 알려줘야 한다.
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gm.sendUpstreamMessage(&wshandler.UpstreamMessage{
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Target: "@" + mid.Hex(),
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Body: inviteeDoc,
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Tag: []string{"InvitationFail"},
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})
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}
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return "", errAlreadyInvited
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}
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gd, err := gm.find(gid)
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if err != nil {
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return "", err
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}
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if gd == nil {
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gd, err = gm.createGroup(gid, mid, inviterDoc)
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if err != nil {
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return "", err
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}
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// 내가 wshandler room에 입장
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gm.sendEnterRoomMessage(gid, mid)
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gm.sendUpstreamMessage(&wshandler.UpstreamMessage{
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Target: "@" + mid.Hex(),
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Body: groupDocWithId{
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groupDoc: gd,
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Gid: gd.strid(),
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},
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Tag: []string{"GroupDocFull"},
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})
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}
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newdoc, err := gd.addInvite(inviteeDoc, time.Duration(gm.InviteExpire+1)*time.Second, gm.MaxMember)
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if err != nil {
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return "", err
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}
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// 초대 중 표시
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success, err := gm.rh.SetNX(gm.rh.ctx, targetid.Hex(), mid.Hex(), time.Duration(gm.InviteExpire)*time.Second).Result()
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if err != nil {
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return "", err
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}
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logger.Println("invitation key :", targetid.Hex(), success)
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// invitee에게 알림
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gm.sendUpstreamMessage(&wshandler.UpstreamMessage{
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Target: "@" + targetid.Hex(),
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Body: Invitation{
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GroupID: gid,
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TicketID: gd.tid(targetid),
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Inviter: inviterDoc,
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ExpireAtUTC: newdoc.InviteExpire,
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},
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Tag: []string{"Invitation"},
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})
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return gd.strid(), nil
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}
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func (gm *groupInMemory) CancelInvitation(gid groupID, tid ticketID) error {
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return nil
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}
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var errInvitationExpired = errors.New("invitation is already expired")
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func (gm *groupInMemory) AcceptInvitation(gid groupID, mid accountID, member bson.M) error {
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logger.Println("accept invitation key :", mid.Hex())
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cnt, err := gm.rh.Del(gm.rh.ctx, mid.Hex()).Result()
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if err != nil {
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return err
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}
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if cnt == 0 {
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// 만료됨
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return errInvitationExpired
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}
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gd := groupDoc{
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id: gid,
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rh: gm.rh,
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}
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memberDoc, err := gd.addMember(mid, member)
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if err == nil {
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// 기존 멤버에게 새 멤버를 알림
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gm.sendUpstreamMessage(&wshandler.UpstreamMessage{
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Target: "#" + gid.Hex(),
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Body: map[string]any{
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gd.tid(mid): memberDoc,
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},
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Tag: []string{"MemberDocFull"},
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})
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gm.sendEnterRoomMessage(gid, mid)
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// 새 멤버에 그룹 전체를 알림
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full, err := gm.rh.JSONGet(gd.strid(), "$")
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if err != nil {
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return err
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}
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logger.Println(full)
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var temp []groupDoc
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err = json.Unmarshal([]byte(full.(string)), &temp)
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if err != nil {
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return err
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}
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gm.sendUpstreamMessage(&wshandler.UpstreamMessage{
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Target: "@" + mid.Hex(),
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Body: groupDocWithId{
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groupDoc: &temp[0],
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Gid: gd.strid(),
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},
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Tag: []string{"GroupDocFull"},
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})
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}
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// 실패
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return err
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}
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func (gm *groupInMemory) DenyInvitation(gid groupID, mid accountID, tid ticketID) error {
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gm.rh.Del(gm.rh.ctx, mid.Hex()).Result()
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gd := groupDoc{
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id: gid,
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rh: gm.rh,
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}
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return gd.removeMember(mid)
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}
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func (gm *groupInMemory) QueryInvitations(mid accountID, after primitive.Timestamp) ([]bson.M, error) {
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return nil, nil
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}
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func (gm *groupInMemory) Exist(gid groupID, filter bson.M) (bool, error) {
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return false, nil
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}
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func (gm *groupInMemory) FindAll(filter bson.M, projection string, after primitive.Timestamp) ([]bson.M, error) {
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return nil, nil
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}
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func (gm *groupInMemory) FindOne(gid groupID, projection string) (bson.M, error) {
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return nil, nil
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}
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func (gm *groupInMemory) Leave(gid groupID, mid accountID) error {
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gd := groupDoc{
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id: gid,
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rh: gm.rh,
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}
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if err := gd.removeMember(mid); err != nil {
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return err
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}
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// 나한테는 빈 GroupDocFull을 보낸다. 그러면 지워짐
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gm.sendUpstreamMessage(&wshandler.UpstreamMessage{
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Target: "@" + mid.Hex(),
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Body: bson.M{"gid": gid},
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Tag: []string{"GroupDocFull", gid.Hex()},
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})
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gm.sendLeaveRoomMessage(gid, mid)
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return nil
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}
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func (gm *groupInMemory) UpdateMemberDocument(gid groupID, mid accountID, doc bson.M) error {
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gd := groupDoc{
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id: gid,
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rh: gm.rh,
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}
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prefixPath := fmt.Sprintf("$._members.%s.", gd.tid(mid))
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err := gm.rh.JSONMSetRel(gd.strid(), prefixPath, doc)
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if err != nil {
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return err
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}
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gm.sendUpstreamMessage(&wshandler.UpstreamMessage{
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Target: "#" + gid.Hex(),
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Body: map[string]any{
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gd.tid(mid): doc,
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},
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Tag: []string{"MemberDocFragment"},
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})
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return nil
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}
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func (gm *groupInMemory) Dismiss(gid groupID) error {
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return nil
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}
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func (gm *groupInMemory) UpdateGroupDocument(gid groupID, frag bson.M) error {
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gd := groupDoc{
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id: gid,
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rh: gm.rh,
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}
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if err := gm.rh.JSONMSetRel(gd.strid(), "$.", frag); err != nil {
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return err
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}
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// 업데이트 알림
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gm.sendUpstreamMessage(&wshandler.UpstreamMessage{
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Target: "#" + gid.Hex(),
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Body: frag,
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Tag: []string{"GroupDocFragment"},
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})
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return nil
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}
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func (cfg *groupConfig) prepareInMemory(ctx context.Context, typename string, sub *subTavern) (group, error) {
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// group document
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// member document
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region := sub.region
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wsh := sub.wsh
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storage := config.RegionStorage[sub.region]
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redisClient, err := gocommon.NewRedisClient(storage.Redis["tavern"])
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if err != nil {
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return nil, err
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}
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// 여기서는 subscribe channel
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// 각 함수에서는 publish
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gm := &groupInMemory{
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groupConfig: cfg,
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rh: NewRedisonHandler(ctx, redisClient),
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sendUpstreamMessage: func(msg *wshandler.UpstreamMessage) {
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wsh.SendUpstreamMessage(region, msg)
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},
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sendEnterRoomMessage: func(gid groupID, accid accountID) {
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wsh.EnterRoom(region, gid.Hex(), accid)
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},
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sendLeaveRoomMessage: func(gid groupID, accid accountID) {
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wsh.LeaveRoom(region, gid.Hex(), accid)
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},
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}
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return gm, nil
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}
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