NET-2903 Normalize weight for http routes

agent/structs/config_entry_routes.go

@@ -100,7 +100,9 @@ func (e *HTTPRouteConfigEntry) Normalize() error {
 
 func normalizeHTTPService(service HTTPService) HTTPService {
 	service.EnterpriseMeta.Normalize()
-
+	if service.Weight <= 0 {
+		service.Weight = 1
+	}
 	return service
 }
 

agent/structs/config_entry_routes_test.go

@@ -262,6 +262,28 @@ func TestHTTPRoute(t *testing.T) {
 				}},
 			},
 		},
+		"rule normalizes service weight": {
+			entry: &HTTPRouteConfigEntry{
+				Kind: HTTPRoute,
+				Name: "route-one",
+				Rules: []HTTPRouteRule{{
+					Services: []HTTPService{
+						{
+							Name:   "test",
+							Weight: 0,
+						},
+						{
+							Name:   "test2",
+							Weight: -1,
+						}},
+				}},
+			},
+			check: func(t *testing.T, entry ConfigEntry) {
+				route := entry.(*HTTPRouteConfigEntry)
+				require.Equal(t, 1, route.Rules[0].Services[0].Weight)
+				require.Equal(t, 1, route.Rules[0].Services[1].Weight)
+			},
+		},
 	}
 	testConfigEntryNormalizeAndValidate(t, cases)
 }

website/content/docs/connect/gateways/api-gateway/configuration/http-route.mdx

@@ -630,7 +630,8 @@ Specifies the Enterprise [admin partition](/consul/docs/enterprise/admin-partiti
 
 ### `Rules[].Services[].Weight`
 
-Specifies the proportion of requests forwarded to the specified service. The
+Specifies the proportion of requests forwarded to the specified service. If no weight is specified, or if the specified
+weight is set to less than or equal to 0, it will be normalized to 1. The
 proportion is determined by dividing the value of the weight by the sum of all
 weights in the service list. For non-zero values, there may be some deviation
 from the exact proportion depending on the precision an implementation