app/product: block products to be initialized with the feature flag (#21875)

app/product.go

@@ -17,6 +17,9 @@ func (s *Server) initializeProducts(
 	// create a product map to consume
 	pmap := make(map[string]struct{})
 	for name := range productMap {
+		if !s.shouldStart(name) {
+			continue
+		}
 		pmap[name] = struct{}{}
 	}
 
@@ -64,3 +67,11 @@ func (s *Server) initializeProducts(
 
 	return nil
 }
+
+func (s *Server) shouldStart(product string) bool {
+	if !s.Config().FeatureFlags.BoardsProduct && product == "boards" {
+		return false
+	}
+
+	return true
+}

app/product_test.go

@@ -6,6 +6,8 @@ package app
 import (
 	"testing"
 
+	"github.com/mattermost/mattermost-server/v6/app/platform"
+	"github.com/mattermost/mattermost-server/v6/config"
 	"github.com/mattermost/mattermost-server/v6/product"
 	"github.com/stretchr/testify/require"
 )
@@ -36,6 +38,9 @@ func (p *productB) Start() error { return nil }
 func (p *productB) Stop() error  { return nil }
 
 func TestInitializeProducts(t *testing.T) {
+	ps, err := platform.New(platform.ServiceConfig{ConfigStore: config.NewTestMemoryStore()})
+	require.NoError(t, err)
+
 	t.Run("2 products and no circular dependency", func(t *testing.T) {
 		serviceMap := map[product.ServiceKey]any{
 			product.ConfigKey:    nil,
@@ -64,11 +69,13 @@ func TestInitializeProducts(t *testing.T) {
 				},
 			},
 		}
+
 		server := &Server{
 			products: make(map[string]product.Product),
+			platform: ps,
 		}
 
-		err := server.initializeProducts(products, serviceMap)
+		err = server.initializeProducts(products, serviceMap)
 		require.NoError(t, err)
 		require.Len(t, server.products, 2)
 	})
@@ -104,6 +111,7 @@ func TestInitializeProducts(t *testing.T) {
 		}
 		server := &Server{
 			products: make(map[string]product.Product),
+			platform: ps,
 		}
 
 		err := server.initializeProducts(products, serviceMap)
@@ -132,10 +140,31 @@ func TestInitializeProducts(t *testing.T) {
 		}
 		server := &Server{
 			products: make(map[string]product.Product),
+			platform: ps,
 		}
 
 		err := server.initializeProducts(products, serviceMap)
 		require.NoError(t, err)
 		require.Len(t, server.products, 2)
 	})
+
+	t.Run("boards product to be blocked", func(t *testing.T) {
+		products := map[string]product.Manifest{
+			"productA": {
+				Initializer: newProductA,
+			},
+			"boards": {
+				Initializer: newProductB,
+			},
+		}
+
+		server := &Server{
+			products: make(map[string]product.Product),
+			platform: ps,
+		}
+
+		err := server.initializeProducts(products, map[product.ServiceKey]any{})
+		require.NoError(t, err)
+		require.Len(t, server.products, 1)
+	})
 }