Support for thrift annotation auth.actor_uuidAnnotate

encoding/thrift/thriftrw-plugin-yarpc/internal/tests/NOSERVICES.thrift

@@ -13,4 +13,5 @@ exception ExWithoutAnnotation {
 
 struct Struct {
     1: optional string baz
+    2: optional string UserIdentifier (auth.actor_uuid = "true")
 }

encoding/thrift/thriftrw-plugin-yarpc/internal/uuid_test_thrift/broken.thrift

@@ -0,0 +1,6 @@
+
+// We cannot have 2 fields annotated with actor uuid in the same struct.
+struct BadStruct {
+    1: optional string baz (auth.actor_uuid = "true")
+    2: optional string UserIdentifier (auth.actor_uuid = "true")
+}

encoding/thrift/thriftrw-plugin-yarpc/internal/uuid_test_thrift/happy.thrift

@@ -0,0 +1,5 @@
+
+struct Struct {
+    1: optional string baz
+    2: optional string UserIdentifier (auth.actor_uuid = "true")
+}

encoding/thrift/thriftrw-plugin-yarpc/internal/uuid_test_thrift/multipleAnnotatedStructs.thrift

@@ -0,0 +1,10 @@
+
+struct RedStruct {
+    1: optional string baz
+    2: optional string UserIdentifier (auth.actor_uuid = "true")
+}
+
+struct GreenStruct {
+    1: optional string baz
+    2: optional string CatIdentifier (auth.actor_uuid = "true")
+}

encoding/thrift/thriftrw-plugin-yarpc/main.go

@@ -103,7 +103,7 @@ type g struct {
 func (g g) Generate(req *api.GenerateServiceRequest) (*api.GenerateServiceResponse, error) {
 	// moduleGenerators apply to all Thrift IDL files, even when no service
 	// definition exists
-	moduleGenerators := []moduleGenFunc{yarpcErrorGenerator}
+	moduleGenerators := []moduleGenFunc{yarpcErrorGenerator, yarpcUUIDGenerator}
 
 	// serviceGenerators apply only when one or more services are defined in the
 	// Thrift IDL file.

encoding/thrift/thriftrw-plugin-yarpc/uuid_test.go

@@ -0,0 +1,84 @@
+// Copyright (c) 2026 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package main
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"go.uber.org/thriftrw/compile"
+	"go.uber.org/thriftrw/ptr"
+	noservices "go.uber.org/yarpc/encoding/thrift/thriftrw-plugin-yarpc/internal/tests/NOSERVICES"
+)
+
+func TestGetUUID(t *testing.T) {
+	t.Run("happyCase", func(t *testing.T) {
+		assert.NotPanics(t, func() {
+			spec, err := compile.Compile("internal/uuid_test_thrift/happy.thrift")
+			assert.NoError(t, err)
+			annotatedTypes, err := anyAnnotatedTypes(spec.Types)
+			assert.NoError(t, err)
+			assert.Equal(t, 1, len(annotatedTypes))
+			for k, v := range annotatedTypes {
+				assert.Equal(t, "Struct", k.Name)
+				assert.Equal(t, v, "UserIdentifier")
+			}
+
+		})
+	})
+	t.Run("multipleAnnotatedStructs", func(t *testing.T) {
+		assert.NotPanics(t, func() {
+			spec, err := compile.Compile("internal/uuid_test_thrift/multipleAnnotatedStructs.thrift")
+			assert.NoError(t, err)
+			annotatedTypes, err := anyAnnotatedTypes(spec.Types)
+			assert.NoError(t, err)
+			assert.Equal(t, 2, len(annotatedTypes))
+			uuidFields := map[string]string{
+				"RedStruct":   "UserIdentifier",
+				"GreenStruct": "CatIdentifier",
+			}
+			for k, v := range annotatedTypes {
+				assert.Equal(t, uuidFields[k.Name], v)
+			}
+
+		})
+	})
+
+	t.Run("errorCase", func(t *testing.T) {
+		assert.NotPanics(t, func() {
+			spec, err := compile.Compile("internal/uuid_test_thrift/broken.thrift")
+			assert.NoError(t, err)
+			_, err = anyAnnotatedTypes(spec.Types)
+			assert.Error(t, err)
+
+		})
+	})
+}
+
+func TestGetGeneratedUUID(t *testing.T) {
+	t.Run("Found the UUID", func(t *testing.T) {
+		st := noservices.Struct{
+			Baz:            ptr.String("asdf"),
+			UserIdentifier: ptr.String("my-uuid"),
+		}
+		assert.Equal(t, "my-uuid", st.ActorUUID())
+	})
+}