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/webhook_layer.go

@@ -0,0 +1,89 @@
+// 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 LocalCacheWebhookStore struct {
+	store.WebhookStore
+	rootStore *LocalCacheStore
+}
+
+func (s *LocalCacheWebhookStore) handleClusterInvalidateWebhook(msg *model.ClusterMessage) {
+	if bytes.Equal(msg.Data, clearCacheMessageData) {
+		s.rootStore.webhookCache.Purge()
+	} else {
+		s.rootStore.webhookCache.Remove(string(msg.Data))
+	}
+}
+
+func (s LocalCacheWebhookStore) ClearCaches() {
+	s.rootStore.doClearCacheCluster(s.rootStore.webhookCache)
+
+	if s.rootStore.metrics != nil {
+		s.rootStore.metrics.IncrementMemCacheInvalidationCounter("Webhook - Purge")
+	}
+}
+
+func (s LocalCacheWebhookStore) InvalidateWebhookCache(webhookId string) {
+	s.rootStore.doInvalidateCacheCluster(s.rootStore.webhookCache, webhookId)
+	if s.rootStore.metrics != nil {
+		s.rootStore.metrics.IncrementMemCacheInvalidationCounter("Webhook - Remove by WebhookId")
+	}
+}
+
+func (s LocalCacheWebhookStore) GetIncoming(id string, allowFromCache bool) (*model.IncomingWebhook, error) {
+	if !allowFromCache {
+		return s.WebhookStore.GetIncoming(id, allowFromCache)
+	}
+
+	var incomingWebhook *model.IncomingWebhook
+	if err := s.rootStore.doStandardReadCache(s.rootStore.webhookCache, id, &incomingWebhook); err == nil {
+		return incomingWebhook, nil
+	}
+
+	incomingWebhook, err := s.WebhookStore.GetIncoming(id, allowFromCache)
+	if err != nil {
+		return nil, err
+	}
+
+	s.rootStore.doStandardAddToCache(s.rootStore.webhookCache, id, incomingWebhook)
+
+	return incomingWebhook, nil
+}
+
+func (s LocalCacheWebhookStore) DeleteIncoming(webhookId string, time int64) error {
+	err := s.WebhookStore.DeleteIncoming(webhookId, time)
+	if err != nil {
+		return err
+	}
+
+	s.InvalidateWebhookCache(webhookId)
+	return nil
+}
+
+func (s LocalCacheWebhookStore) PermanentDeleteIncomingByUser(userId string) error {
+	err := s.WebhookStore.PermanentDeleteIncomingByUser(userId)
+	if err != nil {
+		return err
+	}
+
+	s.ClearCaches()
+	return nil
+}
+
+func (s LocalCacheWebhookStore) PermanentDeleteIncomingByChannel(channelId string) error {
+	err := s.WebhookStore.PermanentDeleteIncomingByChannel(channelId)
+	if err != nil {
+		return err
+	}
+
+	s.ClearCaches()
+	return nil
+}