mirror of
https://github.com/mattermost/mattermost.git
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98 lines
2.8 KiB
Go
98 lines
2.8 KiB
Go
// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
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// See License.txt for license information.
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package app
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import (
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"fmt"
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"time"
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"github.com/mattermost/mattermost-server/mlog"
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"github.com/mattermost/mattermost-server/model"
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)
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const (
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DISCOVERY_SERVICE_WRITE_PING = 60 * time.Second
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)
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type ClusterDiscoveryService struct {
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model.ClusterDiscovery
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app *App
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stop chan bool
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}
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func (a *App) NewClusterDiscoveryService() *ClusterDiscoveryService {
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ds := &ClusterDiscoveryService{
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ClusterDiscovery: model.ClusterDiscovery{},
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app: a,
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stop: make(chan bool),
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}
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return ds
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}
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func (me *ClusterDiscoveryService) Start() {
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err := me.app.Srv.Store.ClusterDiscovery().Cleanup()
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if err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to cleanup the outdated cluster discovery information err=%v", err))
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}
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exists, err := me.app.Srv.Store.ClusterDiscovery().Exists(&me.ClusterDiscovery)
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if err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to check if row exists for %v with err=%v", me.ClusterDiscovery.ToJson(), err))
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} else {
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if exists {
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if _, err := me.app.Srv.Store.ClusterDiscovery().Delete(&me.ClusterDiscovery); err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to start clean for %v with err=%v", me.ClusterDiscovery.ToJson(), err))
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}
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}
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}
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if err := me.app.Srv.Store.ClusterDiscovery().Save(&me.ClusterDiscovery); err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to save for %v with err=%v", me.ClusterDiscovery.ToJson(), err))
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return
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}
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go func() {
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mlog.Debug(fmt.Sprintf("ClusterDiscoveryService ping writer started for %v", me.ClusterDiscovery.ToJson()))
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ticker := time.NewTicker(DISCOVERY_SERVICE_WRITE_PING)
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defer func() {
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ticker.Stop()
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if _, err := me.app.Srv.Store.ClusterDiscovery().Delete(&me.ClusterDiscovery); err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to cleanup for %v with err=%v", me.ClusterDiscovery.ToJson(), err))
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}
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mlog.Debug(fmt.Sprintf("ClusterDiscoveryService ping writer stopped for %v", me.ClusterDiscovery.ToJson()))
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}()
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for {
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select {
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case <-ticker.C:
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if err := me.app.Srv.Store.ClusterDiscovery().SetLastPingAt(&me.ClusterDiscovery); err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to write ping for %v with err=%v", me.ClusterDiscovery.ToJson(), err))
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}
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case <-me.stop:
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return
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}
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}
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}()
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}
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func (me *ClusterDiscoveryService) Stop() {
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me.stop <- true
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}
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func (a *App) IsLeader() bool {
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if a.License() != nil && *a.Config().ClusterSettings.Enable && a.Cluster != nil {
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return a.Cluster.IsLeader()
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}
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return true
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}
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func (a *App) GetClusterId() string {
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if a.Cluster == nil {
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return ""
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}
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return a.Cluster.GetClusterId()
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}
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