ProductsQueryset manager execute duplicated channel queries

saleor/graphql/attribute/filters.py

@@ -4,6 +4,7 @@
 
 from ...attribute import AttributeInputType
 from ...attribute.models import Attribute, AttributeValue
+from ...channel.models import Channel
 from ...permission.utils import has_one_of_permissions
 from ...product import models
 from ...product.models import ALL_PRODUCTS_PERMISSIONS
@@ -42,8 +43,12 @@ def filter_attributes_by_product_types(qs, field, value, requestor, channel_slug
     if not value:
         return qs
 
+    channel = None
+    if channel_slug is not None:
+        channel = Channel.objects.using(qs.db).filter(slug=str(channel_slug)).first()
+    limited_channel_access = False if channel_slug is None else True
     product_qs = models.Product.objects.using(qs.db).visible_to_user(
-        requestor, channel_slug
+        requestor, channel, limited_channel_access
     )
 
     if field == "in_category":
@@ -57,7 +62,7 @@ def filter_attributes_by_product_types(qs, field, value, requestor, channel_slug
         product_qs = product_qs.filter(category__in=tree)
 
         if not has_one_of_permissions(requestor, ALL_PRODUCTS_PERMISSIONS):
-            product_qs = product_qs.annotate_visible_in_listings(channel_slug).exclude(
+            product_qs = product_qs.annotate_visible_in_listings(channel).exclude(
                 visible_in_listings=False
             )
 

saleor/graphql/order/utils.py

@@ -209,7 +209,7 @@ def validate_product_is_published(
     unpublished_product = (
         Product.objects.using(database_connection_name)
         .filter(variants__id__in=variant_ids)
-        .not_published(channel.slug)
+        .not_published(channel)
     )
     if unpublished_product.exists():
         errors["lines"].append(
@@ -238,7 +238,7 @@ def validate_product_is_published_in_channel(
     unpublished_product = list(
         Product.objects.using(database_connection_name)
         .filter(variants__id__in=variant_ids)
-        .not_published(channel.slug)
+        .not_published(channel)
     )
     if unpublished_product:
         unpublished_variants = (
@@ -398,9 +398,9 @@ def prepare_insufficient_stock_order_validation_errors(exc):
                 "Insufficient product stock.",
                 code=OrderErrorCode.INSUFFICIENT_STOCK.value,
                 params={
-                    "order_lines": [order_line_global_id]
-                    if order_line_global_id
-                    else [],
+                    "order_lines": (
+                        [order_line_global_id] if order_line_global_id else []
+                    ),
                     "warehouse": warehouse_global_id,
                 },
             )

saleor/graphql/product/resolvers.py

@@ -1,3 +1,5 @@
+from typing import Optional
+
 from django.db.models import Exists, OuterRef, Sum
 
 from ...channel.models import Channel
@@ -66,11 +68,17 @@ def resolve_digital_contents(info: ResolveInfo):
 
 
 def resolve_product(
-    info: ResolveInfo, id, slug, external_reference, channel_slug, requestor
+    info: ResolveInfo,
+    id,
+    slug,
+    external_reference,
+    channel: Optional[Channel],
+    limited_channel_access: bool,
+    requestor,
 ):
     database_connection_name = get_database_connection_name(info.context)
     qs = models.Product.objects.using(database_connection_name).visible_to_user(
-        requestor, channel_slug=channel_slug
+        requestor, channel, limited_channel_access
     )
     if id:
         _type, id = from_global_id_or_error(id, "Product")
@@ -83,18 +91,17 @@ def resolve_product(
 
 @traced_resolver
 def resolve_products(
-    info: ResolveInfo, requestor, channel_slug=None
+    info: ResolveInfo,
+    requestor,
+    channel: Optional[Channel],
+    limited_channel_access: bool,
 ) -> ChannelQsContext:
     connection_name = get_database_connection_name(info.context)
     qs = models.Product.objects.using(connection_name).visible_to_user(
-        requestor, channel_slug
+        requestor, channel, limited_channel_access
     )
     if not has_one_of_permissions(requestor, ALL_PRODUCTS_PERMISSIONS):
-        if channel := (
-            Channel.objects.using(connection_name)
-            .filter(slug=str(channel_slug))
-            .first()
-        ):
+        if channel:
             product_channel_listings = (
                 models.ProductChannelListing.objects.using(connection_name)
                 .filter(channel_id=channel.id, visible_in_listings=True)
@@ -105,6 +112,7 @@ def resolve_products(
             )
         else:
             qs = models.Product.objects.none()
+    channel_slug = channel.slug if channel else None
     return ChannelQsContext(qs=qs, channel_slug=channel_slug)
 
 
@@ -129,21 +137,22 @@ def resolve_variant(
     sku,
     external_reference,
     *,
-    channel_slug,
+    channel: Optional[Channel],
+    limited_channel_access: bool,
     requestor,
     requestor_has_access_to_all,
 ):
     connection_name = get_database_connection_name(info.context)
     visible_products = (
         models.Product.objects.using(connection_name)
-        .visible_to_user(requestor, channel_slug)
+        .visible_to_user(requestor, channel, limited_channel_access)
         .values_list("pk", flat=True)
     )
     qs = models.ProductVariant.objects.using(connection_name).filter(
         product__id__in=visible_products
     )
     if not requestor_has_access_to_all:
-        qs = qs.available_in_channel(channel_slug)
+        qs = qs.available_in_channel(channel)
     if id:
         _, id = from_global_id_or_error(id, "ProductVariant")
         return qs.filter(pk=id).first()
@@ -159,24 +168,26 @@ def resolve_product_variants(
     requestor_has_access_to_all,
     requestor,
     ids=None,
-    channel_slug=None,
+    channel: Optional[Channel] = None,
+    limited_channel_access: bool = False,
 ) -> ChannelQsContext:
     connection_name = get_database_connection_name(info.context)
     visible_products = models.Product.objects.using(connection_name).visible_to_user(
-        requestor, channel_slug
+        requestor, channel, limited_channel_access
     )
     qs = models.ProductVariant.objects.using(connection_name).filter(
         product__id__in=visible_products
     )
 
+    channel_slug = channel.slug if channel else None
     if not requestor_has_access_to_all:
         visible_products = visible_products.annotate_visible_in_listings(
-            channel_slug
+            channel
         ).exclude(visible_in_listings=False)
         qs = (
             qs.using(connection_name)
             .filter(product__in=visible_products)
-            .available_in_channel(channel_slug)
+            .available_in_channel(channel)
         )
     if ids:
         db_ids = [

saleor/graphql/product/schema.py

@@ -5,6 +5,7 @@
 from ...product.models import ALL_PRODUCTS_PERMISSIONS
 from ...product.search import search_products
 from ..channel import ChannelContext, ChannelQsContext
+from ..channel.dataloaders import ChannelBySlugLoader
 from ..channel.utils import get_default_channel_slug_or_graphql_error
 from ..core import ResolveInfo
 from ..core.connection import create_connection_slice, filter_connection_queryset
@@ -436,21 +437,35 @@ def resolve_product(
             requestor, ALL_PRODUCTS_PERMISSIONS
         )
 
+        limited_channel_access = False if channel is None else True
         if channel is None and not has_required_permissions:
             channel = get_default_channel_slug_or_graphql_error(
                 allow_replica=info.context.allow_replica
             )
 
-        product = resolve_product(
-            info,
-            id=id,
-            slug=slug,
-            external_reference=external_reference,
-            channel_slug=channel,
-            requestor=requestor,
-        )
+        def _resolve_product(channel_obj):
+            product = resolve_product(
+                info,
+                id=id,
+                slug=slug,
+                external_reference=external_reference,
+                channel=channel_obj,
+                limited_channel_access=limited_channel_access,
+                requestor=requestor,
+            )
 
-        return ChannelContext(node=product, channel_slug=channel) if product else None
+            return (
+                ChannelContext(node=product, channel_slug=channel) if product else None
+            )
+
+        if channel:
+            return (
+                ChannelBySlugLoader(info.context)
+                .load(str(channel))
+                .then(_resolve_product)
+            )
+        else:
+            return _resolve_product(None)
 
     @staticmethod
     @traced_resolver
@@ -462,20 +477,32 @@ def resolve_products(_root, info: ResolveInfo, *, channel=None, **kwargs):
         has_required_permissions = has_one_of_permissions(
             requestor, ALL_PRODUCTS_PERMISSIONS
         )
+        limited_channel_access = False if channel is None else True
         if channel is None and not has_required_permissions:
             channel = get_default_channel_slug_or_graphql_error(
                 allow_replica=info.context.allow_replica
             )
-        qs = resolve_products(info, requestor, channel_slug=channel)
-        if search:
-            qs = ChannelQsContext(
-                qs=search_products(qs.qs, search), channel_slug=channel
+
+        def _resolve_products(channel_obj):
+            qs = resolve_products(info, requestor, channel_obj, limited_channel_access)
+            if search:
+                qs = ChannelQsContext(
+                    qs=search_products(qs.qs, search), channel_slug=channel
+                )
+            kwargs["channel"] = channel
+            qs = filter_connection_queryset(
+                qs, kwargs, allow_replica=info.context.allow_replica
             )
-        kwargs["channel"] = channel
-        qs = filter_connection_queryset(
-            qs, kwargs, allow_replica=info.context.allow_replica
-        )
-        return create_connection_slice(qs, info, kwargs, ProductCountableConnection)
+            return create_connection_slice(qs, info, kwargs, ProductCountableConnection)
+
+        if channel:
+            return (
+                ChannelBySlugLoader(info.context)
+                .load(str(channel))
+                .then(_resolve_products)
+            )
+        else:
+            return _resolve_products(None)
 
     @staticmethod
     def resolve_product_type(_root, info: ResolveInfo, *, id):
@@ -509,22 +536,35 @@ def resolve_product_variant(
             requestor, ALL_PRODUCTS_PERMISSIONS
         )
 
+        limited_channel_access = False if channel is None else True
         if channel is None and not has_required_permissions:
             channel = get_default_channel_slug_or_graphql_error(
                 allow_replica=info.context.allow_replica
             )
 
-        variant = resolve_variant(
-            info,
-            id,
-            sku,
-            external_reference,
-            channel_slug=channel,
-            requestor=requestor,
-            requestor_has_access_to_all=has_required_permissions,
-        )
+        def _resolve_product_variant(channel_obj):
+            variant = resolve_variant(
+                info,
+                id,
+                sku,
+                external_reference,
+                channel=channel_obj,
+                limited_channel_access=limited_channel_access,
+                requestor=requestor,
+                requestor_has_access_to_all=has_required_permissions,
+            )
+            return (
+                ChannelContext(node=variant, channel_slug=channel) if variant else None
+            )
 
-        return ChannelContext(node=variant, channel_slug=channel) if variant else None
+        if channel:
+            return (
+                ChannelBySlugLoader(info.context)
+                .load(str(channel))
+                .then(_resolve_product_variant)
+            )
+        else:
+            return _resolve_product_variant(None)
 
     @staticmethod
     def resolve_product_variants(
@@ -534,24 +574,37 @@ def resolve_product_variants(
         has_required_permissions = has_one_of_permissions(
             requestor, ALL_PRODUCTS_PERMISSIONS
         )
+        limited_channel_access = False if channel is None else True
         if channel is None and not has_required_permissions:
             channel = get_default_channel_slug_or_graphql_error(
                 allow_replica=info.context.allow_replica
             )
-        qs = resolve_product_variants(
-            info,
-            ids=ids,
-            channel_slug=channel,
-            requestor_has_access_to_all=has_required_permissions,
-            requestor=requestor,
-        )
-        kwargs["channel"] = qs.channel_slug
-        qs = filter_connection_queryset(
-            qs, kwargs, allow_replica=info.context.allow_replica
-        )
-        return create_connection_slice(
-            qs, info, kwargs, ProductVariantCountableConnection
-        )
+
+        def _resolve_product_variants(channel_obj):
+            qs = resolve_product_variants(
+                info,
+                ids=ids,
+                channel=channel_obj,
+                limited_channel_access=limited_channel_access,
+                requestor_has_access_to_all=has_required_permissions,
+                requestor=requestor,
+            )
+            kwargs["channel"] = qs.channel_slug
+            qs = filter_connection_queryset(
+                qs, kwargs, allow_replica=info.context.allow_replica
+            )
+            return create_connection_slice(
+                qs, info, kwargs, ProductVariantCountableConnection
+            )
+
+        if channel:
+            return (
+                ChannelBySlugLoader(info.context)
+                .load(str(channel))
+                .then(_resolve_product_variants)
+            )
+        else:
+            return _resolve_product_variants(None)
 
     @staticmethod
     @traced_resolver

saleor/graphql/product/tests/benchmark/test_product.py

@@ -743,7 +743,7 @@ def test_products_for_federation_query_count(
         ],
     }
 
-    with django_assert_num_queries(5):
+    with django_assert_num_queries(3):
         response = api_client.post_graphql(query, variables)
         content = get_graphql_content(response)
         assert len(content["data"]["_entities"]) == 1
@@ -765,7 +765,7 @@ def test_products_for_federation_query_count(
         ],
     }
 
-    with django_assert_num_queries(5):
+    with django_assert_num_queries(3):
         response = api_client.post_graphql(query, variables)
         content = get_graphql_content(response)
         assert len(content["data"]["_entities"]) == 2