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cluster_handlers.go
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cluster_handlers.go
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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package app
import (
"bytes"
"encoding/json"
"github.com/mattermost/mattermost-server/v6/model"
"github.com/mattermost/mattermost-server/v6/plugin"
"github.com/mattermost/mattermost-server/v6/shared/mlog"
)
func (s *Server) clusterInstallPluginHandler(msg *model.ClusterMessage) {
var data model.PluginEventData
if jsonErr := json.Unmarshal(msg.Data, &data); jsonErr != nil {
mlog.Warn("Failed to decode from JSON", mlog.Err(jsonErr))
}
s.installPluginFromData(data)
}
func (s *Server) clusterRemovePluginHandler(msg *model.ClusterMessage) {
var data model.PluginEventData
if jsonErr := json.Unmarshal(msg.Data, &data); jsonErr != nil {
mlog.Warn("Failed to decode from JSON", mlog.Err(jsonErr))
}
s.removePluginFromData(data)
}
func (s *Server) clusterPluginEventHandler(msg *model.ClusterMessage) {
env := s.GetPluginsEnvironment()
if env == nil {
return
}
if msg.Props == nil {
mlog.Warn("ClusterMessage.Props for plugin event should not be nil")
return
}
pluginID := msg.Props["PluginID"]
eventID := msg.Props["EventID"]
if pluginID == "" || eventID == "" {
mlog.Warn("Invalid ClusterMessage.Props values for plugin event",
mlog.String("plugin_id", pluginID), mlog.String("event_id", eventID))
return
}
hooks, err := env.HooksForPlugin(pluginID)
if err != nil {
mlog.Warn("Getting hooks for plugin failed", mlog.String("plugin_id", pluginID), mlog.Err(err))
return
}
hooks.OnPluginClusterEvent(&plugin.Context{}, model.PluginClusterEvent{
Id: eventID,
Data: msg.Data,
})
}
// registerClusterHandlers registers the cluster message handlers that are handled by the server.
//
// The cluster event handlers are spread across this function and NewLocalCacheLayer.
// Be careful to not have duplicated handlers here and there.
func (s *Server) registerClusterHandlers() {
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventPublish, s.clusterPublishHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventUpdateStatus, s.clusterUpdateStatusHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventInvalidateAllCaches, s.clusterInvalidateAllCachesHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventInvalidateCacheForChannelMembersNotifyProps, s.clusterInvalidateCacheForChannelMembersNotifyPropHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventInvalidateCacheForChannelByName, s.clusterInvalidateCacheForChannelByNameHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventInvalidateCacheForUser, s.clusterInvalidateCacheForUserHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventInvalidateCacheForUserTeams, s.clusterInvalidateCacheForUserTeamsHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventBusyStateChanged, s.clusterBusyStateChgHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventClearSessionCacheForUser, s.clusterClearSessionCacheForUserHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventClearSessionCacheForAllUsers, s.clusterClearSessionCacheForAllUsersHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventInstallPlugin, s.clusterInstallPluginHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventRemovePlugin, s.clusterRemovePluginHandler)
s.Cluster.RegisterClusterMessageHandler(model.ClusterEventPluginEvent, s.clusterPluginEventHandler)
}
func (s *Server) clusterPublishHandler(msg *model.ClusterMessage) {
event, err := model.WebSocketEventFromJSON(bytes.NewReader(msg.Data))
if err != nil {
mlog.Warn("Failed to decode event from JSON", mlog.Err(err))
return
}
s.PublishSkipClusterSend(event)
}
func (s *Server) clusterUpdateStatusHandler(msg *model.ClusterMessage) {
var status model.Status
if jsonErr := json.Unmarshal(msg.Data, &status); jsonErr != nil {
mlog.Warn("Failed to decode status from JSON")
}
s.statusCache.Set(status.UserId, status)
}
func (s *Server) clusterInvalidateAllCachesHandler(msg *model.ClusterMessage) {
s.InvalidateAllCachesSkipSend()
}
func (s *Server) clusterInvalidateCacheForChannelMembersNotifyPropHandler(msg *model.ClusterMessage) {
s.invalidateCacheForChannelMembersNotifyPropsSkipClusterSend(string(msg.Data))
}
func (s *Server) clusterInvalidateCacheForChannelByNameHandler(msg *model.ClusterMessage) {
s.invalidateCacheForChannelByNameSkipClusterSend(msg.Props["id"], msg.Props["name"])
}
func (s *Server) clusterInvalidateCacheForUserHandler(msg *model.ClusterMessage) {
s.invalidateCacheForUserSkipClusterSend(string(msg.Data))
}
func (s *Server) clusterInvalidateCacheForUserTeamsHandler(msg *model.ClusterMessage) {
s.invalidateWebConnSessionCacheForUser(string(msg.Data))
}
func (s *Server) clearSessionCacheForUserSkipClusterSend(userID string) {
s.userService.ClearUserSessionCacheLocal(userID)
s.invalidateWebConnSessionCacheForUser(userID)
}
func (s *Server) clearSessionCacheForAllUsersSkipClusterSend() {
mlog.Info("Purging sessions cache")
s.userService.ClearAllUsersSessionCacheLocal()
}
func (s *Server) clusterClearSessionCacheForUserHandler(msg *model.ClusterMessage) {
s.clearSessionCacheForUserSkipClusterSend(string(msg.Data))
}
func (s *Server) clusterClearSessionCacheForAllUsersHandler(msg *model.ClusterMessage) {
s.clearSessionCacheForAllUsersSkipClusterSend()
}
func (s *Server) clusterBusyStateChgHandler(msg *model.ClusterMessage) {
var sbs model.ServerBusyState
if jsonErr := json.Unmarshal(msg.Data, &sbs); jsonErr != nil {
mlog.Warn("Failed to decode server busy state from JSON", mlog.Err(jsonErr))
}
s.serverBusyStateChanged(&sbs)
}
func (s *Server) invalidateCacheForChannelMembersNotifyPropsSkipClusterSend(channelID string) {
s.Store.Channel().InvalidateCacheForChannelMembersNotifyProps(channelID)
}
func (s *Server) invalidateCacheForChannelByNameSkipClusterSend(teamID, name string) {
if teamID == "" {
teamID = "dm"
}
s.Store.Channel().InvalidateChannelByName(teamID, name)
}
func (s *Server) invalidateCacheForUserSkipClusterSend(userID string) {
s.Store.Channel().InvalidateAllChannelMembersForUser(userID)
s.invalidateWebConnSessionCacheForUser(userID)
}
func (s *Server) invalidateWebConnSessionCacheForUser(userID string) {
hub := s.GetHubForUserId(userID)
if hub != nil {
hub.InvalidateUser(userID)
}
}