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Parallelize mattermost room loading; mutexes

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This commit is contained in:
Alex 2020-02-26 15:26:57 +01:00
parent ec9bc9b752
commit e6fa715b81
3 changed files with 113 additions and 40 deletions
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32
appservice/db.go
View file

@ -2,12 +2,14 @@ package appservice
import (
"fmt"
"sync"
"github.com/jinzhu/gorm"
_ "github.com/jinzhu/gorm/dialects/mysql"
_ "github.com/jinzhu/gorm/dialects/postgres"
_ "github.com/jinzhu/gorm/dialects/sqlite"
log "github.com/sirupsen/logrus"
"golang.org/x/crypto/blake2b"
"git.deuxfleurs.fr/Deuxfleurs/easybridge/connector"
"git.deuxfleurs.fr/Deuxfleurs/easybridge/mxlib"
@ -84,6 +86,20 @@ type DbPmRoomMap struct {
MxRoomID string `gorm:"index:mxroomoid"`
}
// ---- Simple locking mechanism
var dbLocks [256]sync.Mutex
func dbLockSlot(key string) {
slot := blake2b.Sum512([]byte(key))[0]
dbLocks[slot].Lock()
}
func dbUnlockSlot(key string) {
slot := blake2b.Sum512([]byte(key))[0]
dbLocks[slot].Unlock()
}
// ----
func dbCacheGet(key string) string {
@ -101,7 +117,9 @@ func dbCachePut(key string, value string) {
}
func dbCacheTestAndSet(key string, value string) bool {
// TODO make this really an atomic operation
dbLockSlot(key)
defer dbUnlockSlot(key)
// True if value was changed, false if was already set
if dbCacheGet(key) != value {
dbCachePut(key, value)
@ -111,6 +129,10 @@ func dbCacheTestAndSet(key string, value string) bool {
}
func dbGetMxRoom(protocol string, roomId connector.RoomID) (string, error) {
slot_key := fmt.Sprintf("room: %s / %s", protocol, roomId)
dbLockSlot(slot_key)
defer dbUnlockSlot(slot_key)
var room DbRoomMap
// Check if room exists in our mapping,
@ -148,6 +170,10 @@ func dbGetMxRoom(protocol string, roomId connector.RoomID) (string, error) {
}
func dbGetMxPmRoom(protocol string, them connector.UserID, themMxId string, usMxId string, usAccount string) (string, error) {
slot_key := fmt.Sprintf("pmroom: %s / %s / %s / %s", protocol, usMxId, usAccount, them)
dbLockSlot(slot_key)
defer dbUnlockSlot(slot_key)
var room DbPmRoomMap
must_create := db.First(&room, DbPmRoomMap{
@ -186,6 +212,10 @@ func dbGetMxPmRoom(protocol string, them connector.UserID, themMxId string, usMx
}
func dbGetMxUser(protocol string, userId connector.UserID) (string, error) {
slot_key := fmt.Sprintf("user: %s / %s", protocol, userId)
dbLockSlot(slot_key)
defer dbUnlockSlot(slot_key)
var user DbUserMap
must_create := db.First(&user, DbUserMap{

82
connector/mattermost/mattermost.go
View file

@ -7,6 +7,7 @@ import (
"net/http"
_ "os"
"strings"
"sync"
"time"
"github.com/42wim/matterbridge/matterclient"
@ -29,9 +30,15 @@ type Mattermost struct {
conn *matterclient.MMClient
handlerStopChan chan bool
usermap map[string]string // map username to mm user id
sentjoinedmap map[string]bool // map username/room name to bool
userdisplaynamemap map[UserID]string // map username to last displayname
caches mmCaches
}
type mmCaches struct {
sync.Mutex
mmusers map[string]string // map mm username to mm user id
sentjoined map[string]bool // map username/room name to bool
displayname map[UserID]string // map username to last displayname
}
func (mm *Mattermost) SetHandler(h Handler) {
@ -162,14 +169,20 @@ func (mm *Mattermost) checkUserId(id UserID) (string, error) {
if len(x) != 2 || x[1] != mm.server {
return "", fmt.Errorf("Invalid user ID: %s", id)
}
if user_id, ok := mm.usermap[x[0]]; ok {
mm.caches.Lock()
defer mm.caches.Unlock()
if user_id, ok := mm.caches.mmusers[x[0]]; ok {
return user_id, nil
}
u, resp := mm.conn.Client.GetUserByUsername(x[0], "")
if u == nil || resp.Error != nil {
return "", fmt.Errorf("Not found: %s (%s)", x[0], resp.Error)
}
mm.usermap[x[0]] = u.Id
mm.caches.mmusers[x[0]] = u.Id
return u.Id, nil
}
@ -294,24 +307,45 @@ func (mm *Mattermost) Close() {
}
func (mm *Mattermost) handleConnected() {
// Reinitialize shared data structures
mm.handlerStopChan = make(chan bool)
mm.usermap = make(map[string]string)
mm.sentjoinedmap = make(map[string]bool)
mm.userdisplaynamemap = make(map[UserID]string)
go mm.handleLoop(mm.conn.MessageChan, mm.handlerStopChan)
mm.caches.mmusers = make(map[string]string)
mm.caches.sentjoined = make(map[string]bool)
mm.caches.displayname = make(map[UserID]string)
fmt.Printf("Connected to mattermost\n")
chans := mm.conn.GetChannels()
for _, ch := range chans {
if len(strings.Split(ch.Name, "__")) == 2 {
continue // This is a DM channel
}
// Handle incoming messages
go mm.handleLoop(mm.conn.MessageChan, mm.handlerStopChan)
// Initial channel sync
chans := mm.conn.GetChannels()
doneCh := make(map[string]bool)
for _, ch := range chans {
if _, ok := doneCh[ch.Id]; !ok {
doneCh[ch.Id] = true
go mm.initSyncChannel(ch)
}
}
}
func (mm *Mattermost) initSyncChannel(ch *model.Channel) {
if len(strings.Split(ch.Name, "__")) == 2 {
// DM channel
// Update remote user info
users := strings.Split(ch.Name, "__")
for _, uid := range users {
user := mm.conn.GetUser(uid)
if user != nil && uid != mm.conn.User.Id {
mm.updateUserInfo(user)
}
}
} else {
interested, id := mm.reverseRoomId(ch.Id)
if !interested {
// Skip channels that are not in teams we want to bridge
continue
return
}
mm.handler.Joined(id)
@ -368,9 +402,11 @@ func (mm *Mattermost) handleConnected() {
} else {
log.Warnf("Could not get channel members: %s", resp.Error.Error())
}
}
// Read backlog
var backlog *model.PostList
var resp *model.Response
last_seen_post := mm.handler.CacheGet(fmt.Sprintf("last_seen_%s", ch.Id))
if last_seen_post != "" {
backlog, resp = mm.conn.Client.GetPostsAfter(ch.Id, last_seen_post, 0, 1000, "")
@ -390,7 +426,6 @@ func (mm *Mattermost) handleConnected() {
} else {
log.Warnf("Could not get channel backlog: %s", resp.Error)
}
}
}
func (mm *Mattermost) handleLoop(msgCh chan *matterclient.Message, quitCh chan bool) {
@ -413,7 +448,10 @@ func (mm *Mattermost) updateUserInfo(user *model.User) {
userId := UserID(fmt.Sprintf("%s@%s", user.Username, mm.server))
userDisp := user.GetDisplayName(model.SHOW_NICKNAME_FULLNAME)
if lastdn, ok := mm.userdisplaynamemap[userId]; !ok || lastdn != userDisp {
mm.caches.Lock()
defer mm.caches.Unlock()
if lastdn, ok := mm.caches.displayname[userId]; !ok || lastdn != userDisp {
ui := &UserInfo{
DisplayName: userDisp,
}
@ -435,20 +473,24 @@ func (mm *Mattermost) updateUserInfo(user *model.User) {
}
}
mm.handler.UserInfoUpdated(userId, ui)
mm.userdisplaynamemap[userId] = userDisp
mm.caches.displayname[userId] = userDisp
}
}
func (mm *Mattermost) ensureJoined(user *model.User, roomId RoomID) {
userId := UserID(fmt.Sprintf("%s@%s", user.Username, mm.server))
cache_key := fmt.Sprintf("%s / %s", userId, roomId)
if _, ok := mm.sentjoinedmap[cache_key]; !ok {
mm.caches.Lock()
defer mm.caches.Unlock()
if _, ok := mm.caches.sentjoined[cache_key]; !ok {
mm.handler.Event(&Event{
Author: userId,
Room: roomId,
Type: EVENT_JOIN,
})
mm.sentjoinedmap[cache_key] = true
mm.caches.sentjoined[cache_key] = true
}
}

1
go.mod
View file

@ -14,6 +14,7 @@ require (
github.com/mattermost/mattermost-server v5.11.1+incompatible
github.com/mattn/go-xmpp v0.0.0-20200128155807-a86b6abcb3ad
github.com/sirupsen/logrus v1.4.2
golang.org/x/crypto v0.0.0-20191227163750-53104e6ec876
gopkg.in/asn1-ber.v1 v1.0.0-20181015200546-f715ec2f112d // indirect
gopkg.in/yaml.v2 v2.2.8
)