Create dynamic config for max service error message length (#10151)

## What changed?
Create dynamic config for max service error message length

## Why?
Replacing constant max length with dynamic config for added flexibility.

## How did you test it?
- [x] built
- [ ] run locally and tested manually
- [x] covered by existing tests
- [ ] added new unit test(s)
- [ ] added new functional test(s)

## Potential risks

common/dynamicconfig/constants.go

@@ -3225,6 +3225,12 @@ WorkerActivitiesPerSecond, MaxConcurrentActivityTaskPollers.
 		`MaxUserMetadataDetailsSize is the maximum size of user metadata details payloads in bytes.`,
 	)
 
+	MaxServiceErrorMessageLength = NewGlobalIntSetting(
+		"system.maxServiceErrorMessageLength",
+		4000,
+		"MaxServiceErrorMessageLength is the max length of service error message. If it's longer, it will be truncated.",
+	)
+
 	LogAllReqErrors = NewNamespaceBoolSetting(
 		"system.logAllReqErrors",
 		false,

common/rpc/interceptor/service_error_interceptor.go

@@ -5,24 +5,33 @@ import (
 	"errors"
 
 	"go.temporal.io/api/serviceerror"
+	"go.temporal.io/server/common/dynamicconfig"
 	"go.temporal.io/server/common/persistence/serialization"
 	"go.temporal.io/server/common/util"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/status"
 )
 
-const (
-	maxMessageLength = 4000
-	truncatedSuffix  = "... <truncated>"
-)
+const truncatedSuffix = "... <truncated>"
 
-func ServiceErrorInterceptor(
+type ServiceErrorInterceptor struct {
+	maxMessageLength dynamicconfig.IntPropertyFn
+}
+
+func NewServiceErrorInterceptor(
+	maxMessageLength dynamicconfig.IntPropertyFn,
+) *ServiceErrorInterceptor {
+	return &ServiceErrorInterceptor{
+		maxMessageLength: maxMessageLength,
+	}
+}
+
+func (i *ServiceErrorInterceptor) Intercept(
 	ctx context.Context,
 	req any,
 	_ *grpc.UnaryServerInfo,
 	handler grpc.UnaryHandler,
 ) (any, error) {
-
 	resp, err := handler(ctx, req)
 
 	var deserializationError *serialization.DeserializationError
@@ -33,10 +42,11 @@ func ServiceErrorInterceptor(
 	}
 
 	// truncate message length if needed
+	maxLength := i.maxMessageLength()
 	st := serviceerror.ToStatus(err)
-	if len(st.Message()) > maxMessageLength {
+	if len(st.Message()) > maxLength {
 		p := st.Proto()
-		p.Message = util.TruncateUTF8(p.Message, maxMessageLength-len(truncatedSuffix)) + truncatedSuffix
+		p.Message = util.TruncateUTF8(p.Message, maxLength-len(truncatedSuffix)) + truncatedSuffix
 		st = status.FromProto(p)
 	}
 

common/rpc/interceptor/service_error_interceptor_test.go

@@ -8,11 +8,14 @@ import (
 	"github.com/stretchr/testify/require"
 	enumspb "go.temporal.io/api/enums/v1"
 	"go.temporal.io/api/serviceerror"
+	"go.temporal.io/server/common/dynamicconfig"
 	"go.temporal.io/server/common/persistence/serialization"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )
 
+const testMaxMessageLength = 4000
+
 type UnaryHandler func(ctx context.Context, req any) (any, error)
 
 type (
@@ -28,8 +31,9 @@ func (e *ErrorWithoutStatus) Error() string {
 
 // Error returns string message.
 func TestServiceErrorInterceptorUnknown(t *testing.T) {
+	interceptor := NewServiceErrorInterceptor(dynamicconfig.GetIntPropertyFn(testMaxMessageLength))
 
-	_, err := ServiceErrorInterceptor(t.Context(), nil, nil,
+	_, err := interceptor.Intercept(t.Context(), nil, nil,
 		func(ctx context.Context, req any) (any, error) {
 			return nil, status.Error(codes.InvalidArgument, "invalid argument")
 		})
@@ -37,7 +41,7 @@ func TestServiceErrorInterceptorUnknown(t *testing.T) {
 	require.Error(t, err)
 	require.Equal(t, codes.InvalidArgument, status.Code(err))
 
-	_, err = ServiceErrorInterceptor(t.Context(), nil, nil,
+	_, err = interceptor.Intercept(t.Context(), nil, nil,
 		func(ctx context.Context, req any) (any, error) {
 			errWithoutStatus := &ErrorWithoutStatus{
 				Message: "unknown error without status",
@@ -50,12 +54,13 @@ func TestServiceErrorInterceptorUnknown(t *testing.T) {
 }
 
 func TestServiceErrorInterceptorSer(t *testing.T) {
+	interceptor := NewServiceErrorInterceptor(dynamicconfig.GetIntPropertyFn(testMaxMessageLength))
 	serErrors := []error{
 		serialization.NewDeserializationError(enumspb.ENCODING_TYPE_PROTO3, nil),
 		serialization.NewSerializationError(enumspb.ENCODING_TYPE_PROTO3, nil),
 	}
 	for _, inErr := range serErrors {
-		_, err := ServiceErrorInterceptor(t.Context(), nil, nil,
+		_, err := interceptor.Intercept(t.Context(), nil, nil,
 			func(_ context.Context, _ any) (any, error) {
 				return nil, inErr
 			})
@@ -64,8 +69,10 @@ func TestServiceErrorInterceptorSer(t *testing.T) {
 }
 
 func TestServiceErrorInterceptorTruncation(t *testing.T) {
+	interceptor := NewServiceErrorInterceptor(dynamicconfig.GetIntPropertyFn(testMaxMessageLength))
+
 	t.Run("nil error is not affected", func(t *testing.T) {
-		_, err := ServiceErrorInterceptor(t.Context(), nil, nil,
+		_, err := interceptor.Intercept(t.Context(), nil, nil,
 			func(_ context.Context, _ any) (any, error) {
 				return "ok", nil
 			})
@@ -74,7 +81,7 @@ func TestServiceErrorInterceptorTruncation(t *testing.T) {
 
 	t.Run("short message is not truncated", func(t *testing.T) {
 		msg := "short error"
-		_, err := ServiceErrorInterceptor(t.Context(), nil, nil,
+		_, err := interceptor.Intercept(t.Context(), nil, nil,
 			func(_ context.Context, _ any) (any, error) {
 				return nil, serviceerror.NewInternal(msg)
 			})
@@ -84,8 +91,8 @@ func TestServiceErrorInterceptorTruncation(t *testing.T) {
 	})
 
 	t.Run("message at exact limit is not truncated", func(t *testing.T) {
-		msg := strings.Repeat("a", maxMessageLength)
-		_, err := ServiceErrorInterceptor(t.Context(), nil, nil,
+		msg := strings.Repeat("a", testMaxMessageLength)
+		_, err := interceptor.Intercept(t.Context(), nil, nil,
 			func(_ context.Context, _ any) (any, error) {
 				return nil, serviceerror.NewInternal(msg)
 			})
@@ -95,20 +102,20 @@ func TestServiceErrorInterceptorTruncation(t *testing.T) {
 	})
 
 	t.Run("message over limit is truncated", func(t *testing.T) {
-		msg := strings.Repeat("a", maxMessageLength+100)
-		_, err := ServiceErrorInterceptor(t.Context(), nil, nil,
+		msg := strings.Repeat("a", testMaxMessageLength+100)
+		_, err := interceptor.Intercept(t.Context(), nil, nil,
 			func(_ context.Context, _ any) (any, error) {
 				return nil, serviceerror.NewInternal(msg)
 			})
 		require.Error(t, err)
 		st := status.Convert(err)
-		require.LessOrEqual(t, len(st.Message()), maxMessageLength)
+		require.LessOrEqual(t, len(st.Message()), testMaxMessageLength)
 		require.True(t, strings.HasSuffix(st.Message(), truncatedSuffix))
 	})
 
 	t.Run("truncation preserves error code", func(t *testing.T) {
-		msg := strings.Repeat("x", maxMessageLength+500)
-		_, err := ServiceErrorInterceptor(t.Context(), nil, nil,
+		msg := strings.Repeat("x", testMaxMessageLength+500)
+		_, err := interceptor.Intercept(t.Context(), nil, nil,
 			func(_ context.Context, _ any) (any, error) {
 				return nil, serviceerror.NewNotFound(msg)
 			})
@@ -119,15 +126,15 @@ func TestServiceErrorInterceptorTruncation(t *testing.T) {
 	t.Run("truncation respects multi-byte UTF-8 boundary", func(t *testing.T) {
 		// Fill up to near the limit with multi-byte characters (3 bytes each for '€')
 		// then push over the limit so truncation must split within the repeated chars.
-		euroCount := maxMessageLength / len("€") // each '€' is 3 bytes
+		euroCount := testMaxMessageLength / len("€") // each '€' is 3 bytes
 		msg := strings.Repeat("€", euroCount+100)
-		_, err := ServiceErrorInterceptor(t.Context(), nil, nil,
+		_, err := interceptor.Intercept(t.Context(), nil, nil,
 			func(_ context.Context, _ any) (any, error) {
 				return nil, serviceerror.NewInternal(msg)
 			})
 		require.Error(t, err)
 		st := status.Convert(err)
-		require.LessOrEqual(t, len(st.Message()), maxMessageLength)
+		require.LessOrEqual(t, len(st.Message()), testMaxMessageLength)
 		require.True(t, strings.HasSuffix(st.Message(), truncatedSuffix))
 		// Verify the truncated body (without suffix) is valid UTF-8 by checking
 		// that no partial rune was left behind — the full message should be valid.

service/frontend/fx.go

@@ -77,6 +77,7 @@ var Module = fx.Options(
 	// A more robust approach would require using fx groups but we shouldn't overcomplicate until this becomes an issue.
 	fx.Provide(MuxRouterProvider),
 	fx.Provide(ConfigProvider),
+	fx.Provide(ServiceErrorInterceptorProvider),
 	fx.Provide(NamespaceLogInterceptorProvider),
 	fx.Provide(NamespaceHandoverInterceptorProvider),
 	fx.Provide(interceptor.NewRoutingKeyExtractor),
@@ -218,6 +219,7 @@ func GrpcServerOptionsProvider(
 	serviceConfig *Config,
 	serviceName primitives.ServiceName,
 	rpcFactory common.RPCFactory,
+	serviceErrorInterceptor *interceptor.ServiceErrorInterceptor,
 	namespaceLogInterceptor *interceptor.NamespaceLogInterceptor,
 	namespaceRateLimiterInterceptor interceptor.NamespaceRateLimitInterceptor,
 	namespaceCountLimiterInterceptor *interceptor.ConcurrentRequestLimitInterceptor,
@@ -271,7 +273,7 @@ func GrpcServerOptionsProvider(
 		// Mask error interceptor should be the most outer interceptor since it handle the errors format
 		// Service Error Interceptor should be the next most outer interceptor on error handling
 		maskInternalErrorDetailsInterceptor.Intercept,
-		interceptor.ServiceErrorInterceptor,
+		serviceErrorInterceptor.Intercept,
 		interceptor.NewFrontendServiceErrorInterceptor(logger),
 		// BusinessID interceptor extracts business ID and adds it to context for use, must be before any interceptor that touches namespaces (namespaceValidator, handoverInterceptor)
 		businessIDInterceptor.Intercept,
@@ -342,6 +344,14 @@ func ConfigProvider(
 	)
 }
 
+func ServiceErrorInterceptorProvider(
+	dc *dynamicconfig.Collection,
+) *interceptor.ServiceErrorInterceptor {
+	return interceptor.NewServiceErrorInterceptor(
+		dynamicconfig.MaxServiceErrorMessageLength.Get(dc),
+	)
+}
+
 func ThrottledLoggerRpsFnProvider(serviceConfig *Config) resource.ThrottledLoggerRpsFn {
 	return func() float64 { return float64(serviceConfig.ThrottledLogRPS()) }
 }

service/frontend/fx_test.go

@@ -12,6 +12,7 @@ import (
 	enumspb "go.temporal.io/api/enums/v1"
 	"go.temporal.io/api/serviceerror"
 	"go.temporal.io/api/workflowservice/v1"
+	"go.temporal.io/server/common/dynamicconfig"
 	"go.temporal.io/server/common/log"
 	"go.temporal.io/server/common/membership"
 	"go.temporal.io/server/common/metrics"
@@ -205,6 +206,10 @@ func TestRateLimitInterceptorProvider(t *testing.T) {
 			}
 			tc.configure(&tc)
 
+			serviceErrorInterceptor := interceptor.NewServiceErrorInterceptor(
+				dynamicconfig.GetIntPropertyFn(4000),
+			)
+
 			// Create a rate limit interceptor which uses the per-instance and global RPS limits from the test case.
 			rateLimitInterceptor := RateLimitInterceptorProvider(&Config{
 				RPS: func() int {
@@ -225,7 +230,7 @@ func TestRateLimitInterceptorProvider(t *testing.T) {
 			// Create a gRPC server for the fake workflow service.
 			svc := &testSvc{}
 			server := grpc.NewServer(grpc.ChainUnaryInterceptor(
-				interceptor.ServiceErrorInterceptor,
+				serviceErrorInterceptor.Intercept,
 				interceptor.NewFrontendServiceErrorInterceptor(log.NewTestLogger()),
 				rateLimitInterceptor.Intercept,
 			))
@@ -569,6 +574,10 @@ func TestNamespaceRateLimitInterceptorProvider(t *testing.T) {
 
 			config := getTestConfig(tc)
 
+			serviceErrorInterceptor := interceptor.NewServiceErrorInterceptor(
+				dynamicconfig.GetIntPropertyFn(4000),
+			)
+
 			// Create a rate limit interceptor.
 			rateLimitInterceptor := NamespaceRateLimitInterceptorProvider(
 				primitives.FrontendService,
@@ -582,7 +591,7 @@ func TestNamespaceRateLimitInterceptorProvider(t *testing.T) {
 			// Create a gRPC server for the fake workflow service.
 			svc := &testSvc{}
 			server := grpc.NewServer(grpc.ChainUnaryInterceptor(
-				interceptor.ServiceErrorInterceptor,
+				serviceErrorInterceptor.Intercept,
 				interceptor.NewFrontendServiceErrorInterceptor(log.NewTestLogger()),
 				rateLimitInterceptor.Intercept,
 			))
@@ -764,13 +773,17 @@ func TestNamespaceRateLimitMetrics(t *testing.T) {
 				},
 			}
 
+			serviceErrorInterceptor := interceptor.NewServiceErrorInterceptor(
+				dynamicconfig.GetIntPropertyFn(4000),
+			)
+
 			// Create a rate limit interceptor which uses the per-instance and global RPS limits from the test case.
 			rateLimitInterceptor := RateLimitInterceptorProvider(config, serviceResolver, metricsHandler, log.NewTestLogger())
 
 			// Create a gRPC server for the fake workflow service.
 			svc := &testSvc{}
 			server := grpc.NewServer(grpc.ChainUnaryInterceptor(
-				interceptor.ServiceErrorInterceptor,
+				serviceErrorInterceptor.Intercept,
 				interceptor.NewFrontendServiceErrorInterceptor(log.NewTestLogger()),
 				rateLimitInterceptor.Intercept,
 			))

service/fx.go

@@ -40,6 +40,7 @@ type (
 
 		Logger                        log.Logger
 		RPCFactory                    common.RPCFactory
+		ServiceErrorInterceptor       *interceptor.ServiceErrorInterceptor
 		RetryableInterceptor          *interceptor.RetryableInterceptor
 		TelemetryInterceptor          *interceptor.TelemetryInterceptor
 		NamespaceRateLimitInterceptor interceptor.NamespaceRateLimitInterceptor `optional:"true"`
@@ -157,7 +158,7 @@ func GrpcServerOptionsProvider(
 
 func getUnaryInterceptors(params GrpcServerOptionsParams) []grpc.UnaryServerInterceptor {
 	interceptors := []grpc.UnaryServerInterceptor{
-		interceptor.ServiceErrorInterceptor,
+		params.ServiceErrorInterceptor.Intercept,
 		metrics.NewServerMetricsContextInjectorInterceptor(),
 		metrics.NewServerMetricsTrailerPropagatorInterceptor(params.Logger),
 		params.TelemetryInterceptor.UnaryIntercept,

service/history/fx.go

@@ -64,6 +64,7 @@ var Module = fx.Options(
 	ChasmEngineModule,
 	fx.Provide(ConfigProvider), // might be worth just using provider for configs.Config directly
 	fx.Provide(workflow.NewCommandHandlerRegistry),
+	fx.Provide(ServiceErrorInterceptorProvider),
 	fx.Provide(RetryableInterceptorProvider),
 	fx.Provide(ErrorHandlerProvider),
 	fx.Provide(TelemetryInterceptorProvider),
@@ -196,6 +197,14 @@ func ConfigProvider(
 	)
 }
 
+func ServiceErrorInterceptorProvider(
+	dc *dynamicconfig.Collection,
+) *interceptor.ServiceErrorInterceptor {
+	return interceptor.NewServiceErrorInterceptor(
+		dynamicconfig.MaxServiceErrorMessageLength.Get(dc),
+	)
+}
+
 func ThrottledLoggerRpsFnProvider(serviceConfig *configs.Config) resource.ThrottledLoggerRpsFn {
 	return func() float64 { return float64(serviceConfig.ThrottledLogRPS()) }
 }

service/matching/fx.go

@@ -35,6 +35,7 @@ var Module = fx.Options(
 	fx.Provide(PersistenceRateLimitingParamsProvider),
 	service.PersistenceLazyLoadedServiceResolverModule,
 	fx.Provide(ThrottledLoggerRpsFnProvider),
+	fx.Provide(ServiceErrorInterceptorProvider),
 	fx.Provide(ContextMetadataInterceptorProvider),
 	fx.Provide(RetryableInterceptorProvider),
 	fx.Provide(ErrorHandlerProvider),
@@ -62,6 +63,14 @@ func ConfigProvider(
 	return NewConfig(dc)
 }
 
+func ServiceErrorInterceptorProvider(
+	dc *dynamicconfig.Collection,
+) *interceptor.ServiceErrorInterceptor {
+	return interceptor.NewServiceErrorInterceptor(
+		dynamicconfig.MaxServiceErrorMessageLength.Get(dc),
+	)
+}
+
 func RetryableInterceptorProvider() *interceptor.RetryableInterceptor {
 	return interceptor.NewRetryableInterceptor(
 		common.CreateMatchingHandlerRetryPolicy(),