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Fix double posting of edited messages by using lru cache (mattermost)

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This commit is contained in:
Wim 2017-07-25 23:57:27 +02:00
parent a97804548e
commit 41195c8e48
1 changed files with 19 additions and 1 deletions
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20
matterclient/matterclient.go
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@ -1,6 +1,7 @@
package matterclient
import (
"crypto/md5"
"crypto/tls"
"encoding/json"
"errors"
@ -16,6 +17,7 @@ import (
log "github.com/Sirupsen/logrus"
"github.com/gorilla/websocket"
"github.com/hashicorp/golang-lru"
"github.com/jpillora/backoff"
"github.com/mattermost/platform/model"
)
@ -66,6 +68,7 @@ type MMClient struct {
WsPingChan chan *model.WebSocketResponse
ServerVersion string
OnWsConnect func()
lruCache *lru.Cache
}
func New(login, pass, team, server string) *MMClient {
@ -73,6 +76,7 @@ func New(login, pass, team, server string) *MMClient {
mmclient := &MMClient{Credentials: cred, MessageChan: make(chan *Message, 100), Users: make(map[string]*model.User)}
mmclient.log = log.WithFields(log.Fields{"module": "matterclient"})
log.SetFormatter(&log.TextFormatter{FullTimestamp: true})
mmclient.lruCache, _ = lru.New(500)
return mmclient
}
@ -270,7 +274,10 @@ func (m *MMClient) WsReceiver() {
m.log.Debugf("WsReceiver event: %#v", event)
msg := &Message{Raw: &event, Team: m.Credentials.Team}
m.parseMessage(msg)
m.MessageChan <- msg
// check if we didn't empty the message
if msg.Text != "" {
m.MessageChan <- msg
}
continue
}
@ -306,6 +313,13 @@ func (m *MMClient) parseResponse(rmsg model.WebSocketResponse) {
}
func (m *MMClient) parseActionPost(rmsg *Message) {
// add post to cache, if it already exists don't relay this again.
// this should fix reposts
if ok, _ := m.lruCache.ContainsOrAdd(digestString(rmsg.Raw.Data["post"].(string)), true); ok {
m.log.Debugf("message %#v in cache, not processing again", rmsg.Raw.Data["post"].(string))
rmsg.Text = ""
return
}
data := model.PostFromJson(strings.NewReader(rmsg.Raw.Data["post"].(string)))
// we don't have the user, refresh the userlist
if m.GetUser(data.UserId) == nil {
@ -860,3 +874,7 @@ func supportedVersion(version string) bool {
}
return false
}
func digestString(s string) string {
return fmt.Sprintf("%x", md5.Sum([]byte(s)))
}