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author | George Goldberg <george@gberg.me> | 2018-07-31 15:40:23 +0100 |
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committer | Christopher Speller <crspeller@gmail.com> | 2018-07-31 07:40:23 -0700 |
commit | 8766690c81fcefdbe0c9d85590de1eea07a908d7 (patch) | |
tree | ab37e369a2c8afc87a3238bbf028aa82ef1bc125 /app/cluster.go | |
parent | fcb4ee935ef97ca5c79c7433b2be2709fc62e87f (diff) | |
download | chat-8766690c81fcefdbe0c9d85590de1eea07a908d7.tar.gz chat-8766690c81fcefdbe0c9d85590de1eea07a908d7.tar.bz2 chat-8766690c81fcefdbe0c9d85590de1eea07a908d7.zip |
MM-10502: Only cluster master should run job schedulers. (#9174)
* MM-10502: Only cluster master should run job schedulers.
* Use sync.Map for thread safety.
* Fix tests.
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 + }) + }) +} |