Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/store/localcachelayer/scheme_layer.go

@@ -0,0 +1,61 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package localcachelayer
+
+import (
+	"bytes"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/channels/store"
+)
+
+type LocalCacheSchemeStore struct {
+	store.SchemeStore
+	rootStore *LocalCacheStore
+}
+
+func (s *LocalCacheSchemeStore) handleClusterInvalidateScheme(msg *model.ClusterMessage) {
+	if bytes.Equal(msg.Data, clearCacheMessageData) {
+		s.rootStore.schemeCache.Purge()
+	} else {
+		s.rootStore.schemeCache.Remove(string(msg.Data))
+	}
+}
+
+func (s LocalCacheSchemeStore) Save(scheme *model.Scheme) (*model.Scheme, error) {
+	if scheme.Id != "" {
+		defer s.rootStore.doInvalidateCacheCluster(s.rootStore.schemeCache, scheme.Id)
+	}
+	return s.SchemeStore.Save(scheme)
+}
+
+func (s LocalCacheSchemeStore) Get(schemeId string) (*model.Scheme, error) {
+	var scheme *model.Scheme
+	if err := s.rootStore.doStandardReadCache(s.rootStore.schemeCache, schemeId, &scheme); err == nil {
+		return scheme, nil
+	}
+
+	scheme, err := s.SchemeStore.Get(schemeId)
+	if err != nil {
+		return nil, err
+	}
+
+	s.rootStore.doStandardAddToCache(s.rootStore.schemeCache, schemeId, scheme)
+
+	return scheme, nil
+}
+
+func (s LocalCacheSchemeStore) Delete(schemeId string) (*model.Scheme, error) {
+	defer s.rootStore.doInvalidateCacheCluster(s.rootStore.schemeCache, schemeId)
+	defer s.rootStore.doClearCacheCluster(s.rootStore.roleCache)
+	defer s.rootStore.doClearCacheCluster(s.rootStore.rolePermissionsCache)
+	return s.SchemeStore.Delete(schemeId)
+}
+
+func (s LocalCacheSchemeStore) PermanentDeleteAll() error {
+	defer s.rootStore.doClearCacheCluster(s.rootStore.schemeCache)
+	defer s.rootStore.doClearCacheCluster(s.rootStore.roleCache)
+	defer s.rootStore.doClearCacheCluster(s.rootStore.rolePermissionsCache)
+	return s.SchemeStore.PermanentDeleteAll()
+}