MM-32693: Use master when emoji_layer is invalidated (#16951)

We add a map which tracks invalidations to the emoji caches
and use master whenever a fresh item is fetched from DB.

https://mattermost.atlassian.net/browse/MM-32693

```release-note
NONE
```

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

store/storetest/emoji_store.go

@@ -4,6 +4,7 @@
 package storetest
 
 import (
+	"context"
 	"testing"
 	"time"
 
@@ -80,12 +81,12 @@ func testEmojiGet(t *testing.T, ss store.Store) {
 	}()
 
 	for _, emoji := range emojis {
-		_, err := ss.Emoji().Get(emoji.Id, false)
+		_, err := ss.Emoji().Get(context.Background(), emoji.Id, false)
 		require.NoErrorf(t, err, "failed to get emoji with id %v", emoji.Id)
 	}
 
 	for _, emoji := range emojis {
-		_, err := ss.Emoji().Get(emoji.Id, true)
+		_, err := ss.Emoji().Get(context.Background(), emoji.Id, true)
 		require.NoErrorf(t, err, "failed to get emoji with id %v", emoji.Id)
 	}
 }
@@ -119,7 +120,7 @@ func testEmojiGetByName(t *testing.T, ss store.Store) {
 	}()
 
 	for _, emoji := range emojis {
-		_, err := ss.Emoji().GetByName(emoji.Name, true)
+		_, err := ss.Emoji().GetByName(context.Background(), emoji.Name, true)
 		require.NoErrorf(t, err, "failed to get emoji with name %v", emoji.Name)
 	}
 }

store/storetest/mocks/EmojiStore.go

@@ -5,6 +5,8 @@
 package mocks
 
 import (
+	context "context"
+
 	model "github.com/mattermost/mattermost-server/v5/model"
 	mock "github.com/stretchr/testify/mock"
 )
@@ -28,13 +30,13 @@ func (_m *EmojiStore) Delete(emoji *model.Emoji, time int64) error {
 	return r0
 }
 
-// Get provides a mock function with given fields: id, allowFromCache
-func (_m *EmojiStore) Get(id string, allowFromCache bool) (*model.Emoji, error) {
-	ret := _m.Called(id, allowFromCache)
+// Get provides a mock function with given fields: ctx, id, allowFromCache
+func (_m *EmojiStore) Get(ctx context.Context, id string, allowFromCache bool) (*model.Emoji, error) {
+	ret := _m.Called(ctx, id, allowFromCache)
 
 	var r0 *model.Emoji
-	if rf, ok := ret.Get(0).(func(string, bool) *model.Emoji); ok {
-		r0 = rf(id, allowFromCache)
+	if rf, ok := ret.Get(0).(func(context.Context, string, bool) *model.Emoji); ok {
+		r0 = rf(ctx, id, allowFromCache)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*model.Emoji)
@@ -42,8 +44,8 @@ func (_m *EmojiStore) Get(id string, allowFromCache bool) (*model.Emoji, error)
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(string, bool) error); ok {
-		r1 = rf(id, allowFromCache)
+	if rf, ok := ret.Get(1).(func(context.Context, string, bool) error); ok {
+		r1 = rf(ctx, id, allowFromCache)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -51,13 +53,13 @@ func (_m *EmojiStore) Get(id string, allowFromCache bool) (*model.Emoji, error)
 	return r0, r1
 }
 
-// GetByName provides a mock function with given fields: name, allowFromCache
-func (_m *EmojiStore) GetByName(name string, allowFromCache bool) (*model.Emoji, error) {
-	ret := _m.Called(name, allowFromCache)
+// GetByName provides a mock function with given fields: ctx, name, allowFromCache
+func (_m *EmojiStore) GetByName(ctx context.Context, name string, allowFromCache bool) (*model.Emoji, error) {
+	ret := _m.Called(ctx, name, allowFromCache)
 
 	var r0 *model.Emoji
-	if rf, ok := ret.Get(0).(func(string, bool) *model.Emoji); ok {
-		r0 = rf(name, allowFromCache)
+	if rf, ok := ret.Get(0).(func(context.Context, string, bool) *model.Emoji); ok {
+		r0 = rf(ctx, name, allowFromCache)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).(*model.Emoji)
@@ -65,8 +67,8 @@ func (_m *EmojiStore) GetByName(name string, allowFromCache bool) (*model.Emoji,
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(string, bool) error); ok {
-		r1 = rf(name, allowFromCache)
+	if rf, ok := ret.Get(1).(func(context.Context, string, bool) error); ok {
+		r1 = rf(ctx, name, allowFromCache)
 	} else {
 		r1 = ret.Error(1)
 	}