diff options
Diffstat (limited to 'app/cluster.go')
-rw-r--r-- | app/cluster.go | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/app/cluster.go b/app/cluster.go new file mode 100644 index 000000000..020e57c61 --- /dev/null +++ b/app/cluster.go @@ -0,0 +1,29 @@ +// Copyright (c) 2018-present Mattermost, Inc. All Rights Reserved. +// See License.txt for license information. + +package app + +import "github.com/mattermost/mattermost-server/model" + +// Registers a given function to be called when the cluster leader may have changed. Returns a unique ID for the +// listener which can later be used to remove it. If clustering is not enabled in this build, the callback will never +// be called. +func (a *App) AddClusterLeaderChangedListener(listener func()) string { + id := model.NewId() + a.clusterLeaderListeners.Store(id, listener) + return id +} + +// Removes a listener function by the unique ID returned when AddConfigListener was called +func (a *App) RemoveClusterLeaderChangedListener(id string) { + a.clusterLeaderListeners.Delete(id) +} + +func (a *App) InvokeClusterLeaderChangedListeners() { + a.Go(func() { + a.clusterLeaderListeners.Range(func(_, listener interface{}) bool { + listener.(func())() + return true + }) + }) +} |