feat: 新增全局错误透传规则功能

支持管理员配置上游错误如何返回给客户端：
- 新增 ErrorPassthroughRule 数据模型和 Ent Schema
- 实现规则的 CRUD API（/admin/error-passthrough-rules）
- 支持按错误码、关键词匹配，支持 any/all 匹配模式
- 支持按平台过滤（anthropic/openai/gemini/antigravity）
- 支持透传或自定义响应状态码和错误消息
- 实现两级缓存（Redis + 本地内存）和多实例同步
- 集成到 gateway_handler 的错误处理流程
- 新增前端管理界面组件
- 新增单元测试覆盖核心匹配逻辑

优化：
- 移除 refreshLocalCache 中的冗余排序（数据库已排序）
- 后端 Validate() 增加匹配条件非空校验

backend/cmd/server/wire_gen.go

@@ -174,9 +174,13 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	userAttributeValueRepository := repository.NewUserAttributeValueRepository(client)
 	userAttributeService := service.NewUserAttributeService(userAttributeDefinitionRepository, userAttributeValueRepository)
 	userAttributeHandler := admin.NewUserAttributeHandler(userAttributeService)
-	adminHandlers := handler.ProvideAdminHandlers(dashboardHandler, adminUserHandler, groupHandler, accountHandler, adminAnnouncementHandler, oAuthHandler, openAIOAuthHandler, geminiOAuthHandler, antigravityOAuthHandler, proxyHandler, adminRedeemHandler, promoHandler, settingHandler, opsHandler, systemHandler, adminSubscriptionHandler, adminUsageHandler, userAttributeHandler)
-	gatewayHandler := handler.NewGatewayHandler(gatewayService, geminiMessagesCompatService, antigravityGatewayService, userService, concurrencyService, billingCacheService, usageService, apiKeyService, configConfig)
-	openAIGatewayHandler := handler.NewOpenAIGatewayHandler(openAIGatewayService, concurrencyService, billingCacheService, apiKeyService, configConfig)
+	errorPassthroughRepository := repository.NewErrorPassthroughRepository(client)
+	errorPassthroughCache := repository.NewErrorPassthroughCache(redisClient)
+	errorPassthroughService := service.NewErrorPassthroughService(errorPassthroughRepository, errorPassthroughCache)
+	errorPassthroughHandler := admin.NewErrorPassthroughHandler(errorPassthroughService)
+	adminHandlers := handler.ProvideAdminHandlers(dashboardHandler, adminUserHandler, groupHandler, accountHandler, adminAnnouncementHandler, oAuthHandler, openAIOAuthHandler, geminiOAuthHandler, antigravityOAuthHandler, proxyHandler, adminRedeemHandler, promoHandler, settingHandler, opsHandler, systemHandler, adminSubscriptionHandler, adminUsageHandler, userAttributeHandler, errorPassthroughHandler)
+	gatewayHandler := handler.NewGatewayHandler(gatewayService, geminiMessagesCompatService, antigravityGatewayService, userService, concurrencyService, billingCacheService, usageService, apiKeyService, errorPassthroughService, configConfig)
+	openAIGatewayHandler := handler.NewOpenAIGatewayHandler(openAIGatewayService, concurrencyService, billingCacheService, apiKeyService, errorPassthroughService, configConfig)
 	handlerSettingHandler := handler.ProvideSettingHandler(settingService, buildInfo)
 	totpHandler := handler.NewTotpHandler(totpService)
 	handlers := handler.ProvideHandlers(authHandler, userHandler, apiKeyHandler, usageHandler, redeemHandler, subscriptionHandler, announcementHandler, adminHandlers, gatewayHandler, openAIGatewayHandler, handlerSettingHandler, totpHandler)

backend/ent/client.go

@@ -20,6 +20,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/announcement"
 	"github.com/Wei-Shaw/sub2api/ent/announcementread"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
+	"github.com/Wei-Shaw/sub2api/ent/errorpassthroughrule"
 	"github.com/Wei-Shaw/sub2api/ent/group"
 	"github.com/Wei-Shaw/sub2api/ent/promocode"
 	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
@@ -52,6 +53,8 @@ type Client struct {
 	Announcement *AnnouncementClient
 	// AnnouncementRead is the client for interacting with the AnnouncementRead builders.
 	AnnouncementRead *AnnouncementReadClient
+	// ErrorPassthroughRule is the client for interacting with the ErrorPassthroughRule builders.
+	ErrorPassthroughRule *ErrorPassthroughRuleClient
 	// Group is the client for interacting with the Group builders.
 	Group *GroupClient
 	// PromoCode is the client for interacting with the PromoCode builders.
@@ -94,6 +97,7 @@ func (c *Client) init() {
 	c.AccountGroup = NewAccountGroupClient(c.config)
 	c.Announcement = NewAnnouncementClient(c.config)
 	c.AnnouncementRead = NewAnnouncementReadClient(c.config)
+	c.ErrorPassthroughRule = NewErrorPassthroughRuleClient(c.config)
 	c.Group = NewGroupClient(c.config)
 	c.PromoCode = NewPromoCodeClient(c.config)
 	c.PromoCodeUsage = NewPromoCodeUsageClient(c.config)
@@ -204,6 +208,7 @@ func (c *Client) Tx(ctx context.Context) (*Tx, error) {
 		AccountGroup:            NewAccountGroupClient(cfg),
 		Announcement:            NewAnnouncementClient(cfg),
 		AnnouncementRead:        NewAnnouncementReadClient(cfg),
+		ErrorPassthroughRule:    NewErrorPassthroughRuleClient(cfg),
 		Group:                   NewGroupClient(cfg),
 		PromoCode:               NewPromoCodeClient(cfg),
 		PromoCodeUsage:          NewPromoCodeUsageClient(cfg),
@@ -241,6 +246,7 @@ func (c *Client) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error)
 		AccountGroup:            NewAccountGroupClient(cfg),
 		Announcement:            NewAnnouncementClient(cfg),
 		AnnouncementRead:        NewAnnouncementReadClient(cfg),
+		ErrorPassthroughRule:    NewErrorPassthroughRuleClient(cfg),
 		Group:                   NewGroupClient(cfg),
 		PromoCode:               NewPromoCodeClient(cfg),
 		PromoCodeUsage:          NewPromoCodeUsageClient(cfg),
@@ -284,9 +290,10 @@ func (c *Client) Close() error {
 func (c *Client) Use(hooks ...Hook) {
 	for _, n := range []interface{ Use(...Hook) }{
 		c.APIKey, c.Account, c.AccountGroup, c.Announcement, c.AnnouncementRead,
-		c.Group, c.PromoCode, c.PromoCodeUsage, c.Proxy, c.RedeemCode, c.Setting,
-		c.UsageCleanupTask, c.UsageLog, c.User, c.UserAllowedGroup,
-		c.UserAttributeDefinition, c.UserAttributeValue, c.UserSubscription,
+		c.ErrorPassthroughRule, c.Group, c.PromoCode, c.PromoCodeUsage, c.Proxy,
+		c.RedeemCode, c.Setting, c.UsageCleanupTask, c.UsageLog, c.User,
+		c.UserAllowedGroup, c.UserAttributeDefinition, c.UserAttributeValue,
+		c.UserSubscription,
 	} {
 		n.Use(hooks...)
 	}
@@ -297,9 +304,10 @@ func (c *Client) Use(hooks ...Hook) {
 func (c *Client) Intercept(interceptors ...Interceptor) {
 	for _, n := range []interface{ Intercept(...Interceptor) }{
 		c.APIKey, c.Account, c.AccountGroup, c.Announcement, c.AnnouncementRead,
-		c.Group, c.PromoCode, c.PromoCodeUsage, c.Proxy, c.RedeemCode, c.Setting,
-		c.UsageCleanupTask, c.UsageLog, c.User, c.UserAllowedGroup,
-		c.UserAttributeDefinition, c.UserAttributeValue, c.UserSubscription,
+		c.ErrorPassthroughRule, c.Group, c.PromoCode, c.PromoCodeUsage, c.Proxy,
+		c.RedeemCode, c.Setting, c.UsageCleanupTask, c.UsageLog, c.User,
+		c.UserAllowedGroup, c.UserAttributeDefinition, c.UserAttributeValue,
+		c.UserSubscription,
 	} {
 		n.Intercept(interceptors...)
 	}
@@ -318,6 +326,8 @@ func (c *Client) Mutate(ctx context.Context, m Mutation) (Value, error) {
 		return c.Announcement.mutate(ctx, m)
 	case *AnnouncementReadMutation:
 		return c.AnnouncementRead.mutate(ctx, m)
+	case *ErrorPassthroughRuleMutation:
+		return c.ErrorPassthroughRule.mutate(ctx, m)
 	case *GroupMutation:
 		return c.Group.mutate(ctx, m)
 	case *PromoCodeMutation:
@@ -1161,6 +1171,139 @@ func (c *AnnouncementReadClient) mutate(ctx context.Context, m *AnnouncementRead
 	}
 }
 
+// ErrorPassthroughRuleClient is a client for the ErrorPassthroughRule schema.
+type ErrorPassthroughRuleClient struct {
+	config
+}
+
+// NewErrorPassthroughRuleClient returns a client for the ErrorPassthroughRule from the given config.
+func NewErrorPassthroughRuleClient(c config) *ErrorPassthroughRuleClient {
+	return &ErrorPassthroughRuleClient{config: c}
+}
+
+// Use adds a list of mutation hooks to the hooks stack.
+// A call to `Use(f, g, h)` equals to `errorpassthroughrule.Hooks(f(g(h())))`.
+func (c *ErrorPassthroughRuleClient) Use(hooks ...Hook) {
+	c.hooks.ErrorPassthroughRule = append(c.hooks.ErrorPassthroughRule, hooks...)
+}
+
+// Intercept adds a list of query interceptors to the interceptors stack.
+// A call to `Intercept(f, g, h)` equals to `errorpassthroughrule.Intercept(f(g(h())))`.
+func (c *ErrorPassthroughRuleClient) Intercept(interceptors ...Interceptor) {
+	c.inters.ErrorPassthroughRule = append(c.inters.ErrorPassthroughRule, interceptors...)
+}
+
+// Create returns a builder for creating a ErrorPassthroughRule entity.
+func (c *ErrorPassthroughRuleClient) Create() *ErrorPassthroughRuleCreate {
+	mutation := newErrorPassthroughRuleMutation(c.config, OpCreate)
+	return &ErrorPassthroughRuleCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// CreateBulk returns a builder for creating a bulk of ErrorPassthroughRule entities.
+func (c *ErrorPassthroughRuleClient) CreateBulk(builders ...*ErrorPassthroughRuleCreate) *ErrorPassthroughRuleCreateBulk {
+	return &ErrorPassthroughRuleCreateBulk{config: c.config, builders: builders}
+}
+
+// MapCreateBulk creates a bulk creation builder from the given slice. For each item in the slice, the function creates
+// a builder and applies setFunc on it.
+func (c *ErrorPassthroughRuleClient) MapCreateBulk(slice any, setFunc func(*ErrorPassthroughRuleCreate, int)) *ErrorPassthroughRuleCreateBulk {
+	rv := reflect.ValueOf(slice)
+	if rv.Kind() != reflect.Slice {
+		return &ErrorPassthroughRuleCreateBulk{err: fmt.Errorf("calling to ErrorPassthroughRuleClient.MapCreateBulk with wrong type %T, need slice", slice)}
+	}
+	builders := make([]*ErrorPassthroughRuleCreate, rv.Len())
+	for i := 0; i < rv.Len(); i++ {
+		builders[i] = c.Create()
+		setFunc(builders[i], i)
+	}
+	return &ErrorPassthroughRuleCreateBulk{config: c.config, builders: builders}
+}
+
+// Update returns an update builder for ErrorPassthroughRule.
+func (c *ErrorPassthroughRuleClient) Update() *ErrorPassthroughRuleUpdate {
+	mutation := newErrorPassthroughRuleMutation(c.config, OpUpdate)
+	return &ErrorPassthroughRuleUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOne returns an update builder for the given entity.
+func (c *ErrorPassthroughRuleClient) UpdateOne(_m *ErrorPassthroughRule) *ErrorPassthroughRuleUpdateOne {
+	mutation := newErrorPassthroughRuleMutation(c.config, OpUpdateOne, withErrorPassthroughRule(_m))
+	return &ErrorPassthroughRuleUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOneID returns an update builder for the given id.
+func (c *ErrorPassthroughRuleClient) UpdateOneID(id int64) *ErrorPassthroughRuleUpdateOne {
+	mutation := newErrorPassthroughRuleMutation(c.config, OpUpdateOne, withErrorPassthroughRuleID(id))
+	return &ErrorPassthroughRuleUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// Delete returns a delete builder for ErrorPassthroughRule.
+func (c *ErrorPassthroughRuleClient) Delete() *ErrorPassthroughRuleDelete {
+	mutation := newErrorPassthroughRuleMutation(c.config, OpDelete)
+	return &ErrorPassthroughRuleDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// DeleteOne returns a builder for deleting the given entity.
+func (c *ErrorPassthroughRuleClient) DeleteOne(_m *ErrorPassthroughRule) *ErrorPassthroughRuleDeleteOne {
+	return c.DeleteOneID(_m.ID)
+}
+
+// DeleteOneID returns a builder for deleting the given entity by its id.
+func (c *ErrorPassthroughRuleClient) DeleteOneID(id int64) *ErrorPassthroughRuleDeleteOne {
+	builder := c.Delete().Where(errorpassthroughrule.ID(id))
+	builder.mutation.id = &id
+	builder.mutation.op = OpDeleteOne
+	return &ErrorPassthroughRuleDeleteOne{builder}
+}
+
+// Query returns a query builder for ErrorPassthroughRule.
+func (c *ErrorPassthroughRuleClient) Query() *ErrorPassthroughRuleQuery {
+	return &ErrorPassthroughRuleQuery{
+		config: c.config,
+		ctx:    &QueryContext{Type: TypeErrorPassthroughRule},
+		inters: c.Interceptors(),
+	}
+}
+
+// Get returns a ErrorPassthroughRule entity by its id.
+func (c *ErrorPassthroughRuleClient) Get(ctx context.Context, id int64) (*ErrorPassthroughRule, error) {
+	return c.Query().Where(errorpassthroughrule.ID(id)).Only(ctx)
+}
+
+// GetX is like Get, but panics if an error occurs.
+func (c *ErrorPassthroughRuleClient) GetX(ctx context.Context, id int64) *ErrorPassthroughRule {
+	obj, err := c.Get(ctx, id)
+	if err != nil {
+		panic(err)
+	}
+	return obj
+}
+
+// Hooks returns the client hooks.
+func (c *ErrorPassthroughRuleClient) Hooks() []Hook {
+	return c.hooks.ErrorPassthroughRule
+}
+
+// Interceptors returns the client interceptors.
+func (c *ErrorPassthroughRuleClient) Interceptors() []Interceptor {
+	return c.inters.ErrorPassthroughRule
+}
+
+func (c *ErrorPassthroughRuleClient) mutate(ctx context.Context, m *ErrorPassthroughRuleMutation) (Value, error) {
+	switch m.Op() {
+	case OpCreate:
+		return (&ErrorPassthroughRuleCreate{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpUpdate:
+		return (&ErrorPassthroughRuleUpdate{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpUpdateOne:
+		return (&ErrorPassthroughRuleUpdateOne{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpDelete, OpDeleteOne:
+		return (&ErrorPassthroughRuleDelete{config: c.config, hooks: c.Hooks(), mutation: m}).Exec(ctx)
+	default:
+		return nil, fmt.Errorf("ent: unknown ErrorPassthroughRule mutation op: %q", m.Op())
+	}
+}
+
 // GroupClient is a client for the Group schema.
 type GroupClient struct {
 	config
@@ -3462,16 +3605,16 @@ func (c *UserSubscriptionClient) mutate(ctx context.Context, m *UserSubscription
 // hooks and interceptors per client, for fast access.
 type (
 	hooks struct {
-		APIKey, Account, AccountGroup, Announcement, AnnouncementRead, Group, PromoCode,
-		PromoCodeUsage, Proxy, RedeemCode, Setting, UsageCleanupTask, UsageLog, User,
-		UserAllowedGroup, UserAttributeDefinition, UserAttributeValue,
-		UserSubscription []ent.Hook
+		APIKey, Account, AccountGroup, Announcement, AnnouncementRead,
+		ErrorPassthroughRule, Group, PromoCode, PromoCodeUsage, Proxy, RedeemCode,
+		Setting, UsageCleanupTask, UsageLog, User, UserAllowedGroup,
+		UserAttributeDefinition, UserAttributeValue, UserSubscription []ent.Hook
 	}
 	inters struct {
-		APIKey, Account, AccountGroup, Announcement, AnnouncementRead, Group, PromoCode,
-		PromoCodeUsage, Proxy, RedeemCode, Setting, UsageCleanupTask, UsageLog, User,
-		UserAllowedGroup, UserAttributeDefinition, UserAttributeValue,
-		UserSubscription []ent.Interceptor
+		APIKey, Account, AccountGroup, Announcement, AnnouncementRead,
+		ErrorPassthroughRule, Group, PromoCode, PromoCodeUsage, Proxy, RedeemCode,
+		Setting, UsageCleanupTask, UsageLog, User, UserAllowedGroup,
+		UserAttributeDefinition, UserAttributeValue, UserSubscription []ent.Interceptor
 	}
 )
 

backend/ent/ent.go

@@ -17,6 +17,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/announcement"
 	"github.com/Wei-Shaw/sub2api/ent/announcementread"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
+	"github.com/Wei-Shaw/sub2api/ent/errorpassthroughrule"
 	"github.com/Wei-Shaw/sub2api/ent/group"
 	"github.com/Wei-Shaw/sub2api/ent/promocode"
 	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
@@ -95,6 +96,7 @@ func checkColumn(t, c string) error {
 			accountgroup.Table:            accountgroup.ValidColumn,
 			announcement.Table:            announcement.ValidColumn,
 			announcementread.Table:        announcementread.ValidColumn,
+			errorpassthroughrule.Table:    errorpassthroughrule.ValidColumn,
 			group.Table:                   group.ValidColumn,
 			promocode.Table:               promocode.ValidColumn,
 			promocodeusage.Table:          promocodeusage.ValidColumn,

backend/ent/errorpassthroughrule.go

+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"github.com/Wei-Shaw/sub2api/ent/errorpassthroughrule"
+)
+
+// ErrorPassthroughRule is the model entity for the ErrorPassthroughRule schema.
+type ErrorPassthroughRule struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int64 `json:"id,omitempty"`
+	// CreatedAt holds the value of the "created_at" field.
+	CreatedAt time.Time `json:"created_at,omitempty"`
+	// UpdatedAt holds the value of the "updated_at" field.
+	UpdatedAt time.Time `json:"updated_at,omitempty"`
+	// Name holds the value of the "name" field.
+	Name string `json:"name,omitempty"`
+	// Enabled holds the value of the "enabled" field.
+	Enabled bool `json:"enabled,omitempty"`
+	// Priority holds the value of the "priority" field.
+	Priority int `json:"priority,omitempty"`
+	// ErrorCodes holds the value of the "error_codes" field.
+	ErrorCodes []int `json:"error_codes,omitempty"`
+	// Keywords holds the value of the "keywords" field.
+	Keywords []string `json:"keywords,omitempty"`
+	// MatchMode holds the value of the "match_mode" field.
+	MatchMode string `json:"match_mode,omitempty"`
+	// Platforms holds the value of the "platforms" field.
+	Platforms []string `json:"platforms,omitempty"`
+	// PassthroughCode holds the value of the "passthrough_code" field.
+	PassthroughCode bool `json:"passthrough_code,omitempty"`
+	// ResponseCode holds the value of the "response_code" field.
+	ResponseCode *int `json:"response_code,omitempty"`
+	// PassthroughBody holds the value of the "passthrough_body" field.
+	PassthroughBody bool `json:"passthrough_body,omitempty"`
+	// CustomMessage holds the value of the "custom_message" field.
+	CustomMessage *string `json:"custom_message,omitempty"`
+	// Description holds the value of the "description" field.
+	Description  *string `json:"description,omitempty"`
+	selectValues sql.SelectValues
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*ErrorPassthroughRule) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case errorpassthroughrule.FieldErrorCodes, errorpassthroughrule.FieldKeywords, errorpassthroughrule.FieldPlatforms:
+			values[i] = new([]byte)
+		case errorpassthroughrule.FieldEnabled, errorpassthroughrule.FieldPassthroughCode, errorpassthroughrule.FieldPassthroughBody:
+			values[i] = new(sql.NullBool)
+		case errorpassthroughrule.FieldID, errorpassthroughrule.FieldPriority, errorpassthroughrule.FieldResponseCode:
+			values[i] = new(sql.NullInt64)
+		case errorpassthroughrule.FieldName, errorpassthroughrule.FieldMatchMode, errorpassthroughrule.FieldCustomMessage, errorpassthroughrule.FieldDescription:
+			values[i] = new(sql.NullString)
+		case errorpassthroughrule.FieldCreatedAt, errorpassthroughrule.FieldUpdatedAt:
+			values[i] = new(sql.NullTime)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the ErrorPassthroughRule fields.
+func (_m *ErrorPassthroughRule) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case errorpassthroughrule.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int64(value.Int64)
+		case errorpassthroughrule.FieldCreatedAt:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field created_at", values[i])
+			} else if value.Valid {
+				_m.CreatedAt = value.Time
+			}
+		case errorpassthroughrule.FieldUpdatedAt:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field updated_at", values[i])
+			} else if value.Valid {
+				_m.UpdatedAt = value.Time
+			}
+		case errorpassthroughrule.FieldName:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field name", values[i])
+			} else if value.Valid {
+				_m.Name = value.String
+			}
+		case errorpassthroughrule.FieldEnabled:
+			if value, ok := values[i].(*sql.NullBool); !ok {
+				return fmt.Errorf("unexpected type %T for field enabled", values[i])
+			} else if value.Valid {
+				_m.Enabled = value.Bool
+			}
+		case errorpassthroughrule.FieldPriority:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field priority", values[i])
+			} else if value.Valid {
+				_m.Priority = int(value.Int64)
+			}
+		case errorpassthroughrule.FieldErrorCodes:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field error_codes", values[i])
+			} else if value != nil && len(*value) > 0 {
+				if err := json.Unmarshal(*value, &_m.ErrorCodes); err != nil {
+					return fmt.Errorf("unmarshal field error_codes: %w", err)
+				}
+			}
+		case errorpassthroughrule.FieldKeywords:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field keywords", values[i])
+			} else if value != nil && len(*value) > 0 {
+				if err := json.Unmarshal(*value, &_m.Keywords); err != nil {
+					return fmt.Errorf("unmarshal field keywords: %w", err)
+				}
+			}
+		case errorpassthroughrule.FieldMatchMode:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field match_mode", values[i])
+			} else if value.Valid {
+				_m.MatchMode = value.String
+			}
+		case errorpassthroughrule.FieldPlatforms:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field platforms", values[i])
+			} else if value != nil && len(*value) > 0 {
+				if err := json.Unmarshal(*value, &_m.Platforms); err != nil {
+					return fmt.Errorf("unmarshal field platforms: %w", err)
+				}
+			}
+		case errorpassthroughrule.FieldPassthroughCode:
+			if value, ok := values[i].(*sql.NullBool); !ok {
+				return fmt.Errorf("unexpected type %T for field passthrough_code", values[i])
+			} else if value.Valid {
+				_m.PassthroughCode = value.Bool
+			}
+		case errorpassthroughrule.FieldResponseCode:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field response_code", values[i])
+			} else if value.Valid {
+				_m.ResponseCode = new(int)
+				*_m.ResponseCode = int(value.Int64)
+			}
+		case errorpassthroughrule.FieldPassthroughBody:
+			if value, ok := values[i].(*sql.NullBool); !ok {
+				return fmt.Errorf("unexpected type %T for field passthrough_body", values[i])
+			} else if value.Valid {
+				_m.PassthroughBody = value.Bool
+			}
+		case errorpassthroughrule.FieldCustomMessage:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field custom_message", values[i])
+			} else if value.Valid {
+				_m.CustomMessage = new(string)
+				*_m.CustomMessage = value.String
+			}
+		case errorpassthroughrule.FieldDescription:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field description", values[i])
+			} else if value.Valid {
+				_m.Description = new(string)
+				*_m.Description = value.String
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the ErrorPassthroughRule.
+// This includes values selected through modifiers, order, etc.
+func (_m *ErrorPassthroughRule) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// Update returns a builder for updating this ErrorPassthroughRule.
+// Note that you need to call ErrorPassthroughRule.Unwrap() before calling this method if this ErrorPassthroughRule
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *ErrorPassthroughRule) Update() *ErrorPassthroughRuleUpdateOne {
+	return NewErrorPassthroughRuleClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the ErrorPassthroughRule entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *ErrorPassthroughRule) Unwrap() *ErrorPassthroughRule {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("ent: ErrorPassthroughRule is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *ErrorPassthroughRule) String() string {
+	var builder strings.Builder
+	builder.WriteString("ErrorPassthroughRule(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("created_at=")
+	builder.WriteString(_m.CreatedAt.Format(time.ANSIC))
+	builder.WriteString(", ")
+	builder.WriteString("updated_at=")
+	builder.WriteString(_m.UpdatedAt.Format(time.ANSIC))
+	builder.WriteString(", ")
+	builder.WriteString("name=")
+	builder.WriteString(_m.Name)
+	builder.WriteString(", ")
+	builder.WriteString("enabled=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Enabled))
+	builder.WriteString(", ")
+	builder.WriteString("priority=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Priority))
+	builder.WriteString(", ")
+	builder.WriteString("error_codes=")
+	builder.WriteString(fmt.Sprintf("%v", _m.ErrorCodes))
+	builder.WriteString(", ")
+	builder.WriteString("keywords=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Keywords))
+	builder.WriteString(", ")
+	builder.WriteString("match_mode=")
+	builder.WriteString(_m.MatchMode)
+	builder.WriteString(", ")
+	builder.WriteString("platforms=")
+	builder.WriteString(fmt.Sprintf("%v", _m.Platforms))
+	builder.WriteString(", ")
+	builder.WriteString("passthrough_code=")
+	builder.WriteString(fmt.Sprintf("%v", _m.PassthroughCode))
+	builder.WriteString(", ")
+	if v := _m.ResponseCode; v != nil {
+		builder.WriteString("response_code=")
+		builder.WriteString(fmt.Sprintf("%v", *v))
+	}
+	builder.WriteString(", ")
+	builder.WriteString("passthrough_body=")
+	builder.WriteString(fmt.Sprintf("%v", _m.PassthroughBody))
+	builder.WriteString(", ")
+	if v := _m.CustomMessage; v != nil {
+		builder.WriteString("custom_message=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
+	if v := _m.Description; v != nil {
+		builder.WriteString("description=")
+		builder.WriteString(*v)
+	}
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// ErrorPassthroughRules is a parsable slice of ErrorPassthroughRule.
+type ErrorPassthroughRules []*ErrorPassthroughRule

backend/ent/errorpassthroughrule/errorpassthroughrule.go

+// Code generated by ent, DO NOT EDIT.
+
+package errorpassthroughrule
+
+import (
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+)
+
+const (
+	// Label holds the string label denoting the errorpassthroughrule type in the database.
+	Label = "error_passthrough_rule"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldCreatedAt holds the string denoting the created_at field in the database.
+	FieldCreatedAt = "created_at"
+	// FieldUpdatedAt holds the string denoting the updated_at field in the database.
+	FieldUpdatedAt = "updated_at"
+	// FieldName holds the string denoting the name field in the database.
+	FieldName = "name"
+	// FieldEnabled holds the string denoting the enabled field in the database.
+	FieldEnabled = "enabled"
+	// FieldPriority holds the string denoting the priority field in the database.
+	FieldPriority = "priority"
+	// FieldErrorCodes holds the string denoting the error_codes field in the database.
+	FieldErrorCodes = "error_codes"
+	// FieldKeywords holds the string denoting the keywords field in the database.
+	FieldKeywords = "keywords"
+	// FieldMatchMode holds the string denoting the match_mode field in the database.
+	FieldMatchMode = "match_mode"
+	// FieldPlatforms holds the string denoting the platforms field in the database.
+	FieldPlatforms = "platforms"
+	// FieldPassthroughCode holds the string denoting the passthrough_code field in the database.
+	FieldPassthroughCode = "passthrough_code"
+	// FieldResponseCode holds the string denoting the response_code field in the database.
+	FieldResponseCode = "response_code"
+	// FieldPassthroughBody holds the string denoting the passthrough_body field in the database.
+	FieldPassthroughBody = "passthrough_body"
+	// FieldCustomMessage holds the string denoting the custom_message field in the database.
+	FieldCustomMessage = "custom_message"
+	// FieldDescription holds the string denoting the description field in the database.
+	FieldDescription = "description"
+	// Table holds the table name of the errorpassthroughrule in the database.
+	Table = "error_passthrough_rules"
+)
+
+// Columns holds all SQL columns for errorpassthroughrule fields.
+var Columns = []string{
+	FieldID,
+	FieldCreatedAt,
+	FieldUpdatedAt,
+	FieldName,
+	FieldEnabled,
+	FieldPriority,
+	FieldErrorCodes,
+	FieldKeywords,
+	FieldMatchMode,
+	FieldPlatforms,
+	FieldPassthroughCode,
+	FieldResponseCode,
+	FieldPassthroughBody,
+	FieldCustomMessage,
+	FieldDescription,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+var (
+	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
+	DefaultCreatedAt func() time.Time
+	// DefaultUpdatedAt holds the default value on creation for the "updated_at" field.
+	DefaultUpdatedAt func() time.Time
+	// UpdateDefaultUpdatedAt holds the default value on update for the "updated_at" field.
+	UpdateDefaultUpdatedAt func() time.Time
+	// NameValidator is a validator for the "name" field. It is called by the builders before save.
+	NameValidator func(string) error
+	// DefaultEnabled holds the default value on creation for the "enabled" field.
+	DefaultEnabled bool
+	// DefaultPriority holds the default value on creation for the "priority" field.
+	DefaultPriority int
+	// DefaultMatchMode holds the default value on creation for the "match_mode" field.
+	DefaultMatchMode string
+	// MatchModeValidator is a validator for the "match_mode" field. It is called by the builders before save.
+	MatchModeValidator func(string) error
+	// DefaultPassthroughCode holds the default value on creation for the "passthrough_code" field.
+	DefaultPassthroughCode bool
+	// DefaultPassthroughBody holds the default value on creation for the "passthrough_body" field.
+	DefaultPassthroughBody bool
+)
+
+// OrderOption defines the ordering options for the ErrorPassthroughRule queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByCreatedAt orders the results by the created_at field.
+func ByCreatedAt(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldCreatedAt, opts...).ToFunc()
+}
+
+// ByUpdatedAt orders the results by the updated_at field.
+func ByUpdatedAt(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUpdatedAt, opts...).ToFunc()
+}
+
+// ByName orders the results by the name field.
+func ByName(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldName, opts...).ToFunc()
+}
+
+// ByEnabled orders the results by the enabled field.
+func ByEnabled(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldEnabled, opts...).ToFunc()
+}
+
+// ByPriority orders the results by the priority field.
+func ByPriority(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldPriority, opts...).ToFunc()
+}
+
+// ByMatchMode orders the results by the match_mode field.
+func ByMatchMode(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldMatchMode, opts...).ToFunc()
+}
+
+// ByPassthroughCode orders the results by the passthrough_code field.
+func ByPassthroughCode(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldPassthroughCode, opts...).ToFunc()
+}
+
+// ByResponseCode orders the results by the response_code field.
+func ByResponseCode(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldResponseCode, opts...).ToFunc()
+}
+
+// ByPassthroughBody orders the results by the passthrough_body field.
+func ByPassthroughBody(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldPassthroughBody, opts...).ToFunc()
+}
+
+// ByCustomMessage orders the results by the custom_message field.
+func ByCustomMessage(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldCustomMessage, opts...).ToFunc()
+}
+
+// ByDescription orders the results by the description field.
+func ByDescription(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldDescription, opts...).ToFunc()
+}

backend/ent/errorpassthroughrule_delete.go

+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/errorpassthroughrule"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+)
+
+// ErrorPassthroughRuleDelete is the builder for deleting a ErrorPassthroughRule entity.
+type ErrorPassthroughRuleDelete struct {
+	config
+	hooks    []Hook
+	mutation *ErrorPassthroughRuleMutation
+}
+
+// Where appends a list predicates to the ErrorPassthroughRuleDelete builder.
+func (_d *ErrorPassthroughRuleDelete) Where(ps ...predicate.ErrorPassthroughRule) *ErrorPassthroughRuleDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *ErrorPassthroughRuleDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *ErrorPassthroughRuleDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *ErrorPassthroughRuleDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(errorpassthroughrule.Table, sqlgraph.NewFieldSpec(errorpassthroughrule.FieldID, field.TypeInt64))
+	if ps := _d.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// ErrorPassthroughRuleDeleteOne is the builder for deleting a single ErrorPassthroughRule entity.
+type ErrorPassthroughRuleDeleteOne struct {
+	_d *ErrorPassthroughRuleDelete
+}
+
+// Where appends a list predicates to the ErrorPassthroughRuleDelete builder.
+func (_d *ErrorPassthroughRuleDeleteOne) Where(ps ...predicate.ErrorPassthroughRule) *ErrorPassthroughRuleDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *ErrorPassthroughRuleDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{errorpassthroughrule.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *ErrorPassthroughRuleDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

backend/ent/errorpassthroughrule_query.go

+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/errorpassthroughrule"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+)
+
+// ErrorPassthroughRuleQuery is the builder for querying ErrorPassthroughRule entities.
+type ErrorPassthroughRuleQuery struct {
+	config
+	ctx        *QueryContext
+	order      []errorpassthroughrule.OrderOption
+	inters     []Interceptor
+	predicates []predicate.ErrorPassthroughRule
+	modifiers  []func(*sql.Selector)
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the ErrorPassthroughRuleQuery builder.
+func (_q *ErrorPassthroughRuleQuery) Where(ps ...predicate.ErrorPassthroughRule) *ErrorPassthroughRuleQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *ErrorPassthroughRuleQuery) Limit(limit int) *ErrorPassthroughRuleQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *ErrorPassthroughRuleQuery) Offset(offset int) *ErrorPassthroughRuleQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *ErrorPassthroughRuleQuery) Unique(unique bool) *ErrorPassthroughRuleQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *ErrorPassthroughRuleQuery) Order(o ...errorpassthroughrule.OrderOption) *ErrorPassthroughRuleQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// First returns the first ErrorPassthroughRule entity from the query.
+// Returns a *NotFoundError when no ErrorPassthroughRule was found.
+func (_q *ErrorPassthroughRuleQuery) First(ctx context.Context) (*ErrorPassthroughRule, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{errorpassthroughrule.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *ErrorPassthroughRuleQuery) FirstX(ctx context.Context) *ErrorPassthroughRule {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first ErrorPassthroughRule ID from the query.
+// Returns a *NotFoundError when no ErrorPassthroughRule ID was found.
+func (_q *ErrorPassthroughRuleQuery) FirstID(ctx context.Context) (id int64, err error) {
+	var ids []int64
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{errorpassthroughrule.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *ErrorPassthroughRuleQuery) FirstIDX(ctx context.Context) int64 {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single ErrorPassthroughRule entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one ErrorPassthroughRule entity is found.
+// Returns a *NotFoundError when no ErrorPassthroughRule entities are found.
+func (_q *ErrorPassthroughRuleQuery) Only(ctx context.Context) (*ErrorPassthroughRule, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{errorpassthroughrule.Label}
+	default:
+		return nil, &NotSingularError{errorpassthroughrule.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *ErrorPassthroughRuleQuery) OnlyX(ctx context.Context) *ErrorPassthroughRule {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only ErrorPassthroughRule ID in the query.
+// Returns a *NotSingularError when more than one ErrorPassthroughRule ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *ErrorPassthroughRuleQuery) OnlyID(ctx context.Context) (id int64, err error) {
+	var ids []int64
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{errorpassthroughrule.Label}
+	default:
+		err = &NotSingularError{errorpassthroughrule.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *ErrorPassthroughRuleQuery) OnlyIDX(ctx context.Context) int64 {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of ErrorPassthroughRules.
+func (_q *ErrorPassthroughRuleQuery) All(ctx context.Context) ([]*ErrorPassthroughRule, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*ErrorPassthroughRule, *ErrorPassthroughRuleQuery]()
+	return withInterceptors[[]*ErrorPassthroughRule](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *ErrorPassthroughRuleQuery) AllX(ctx context.Context) []*ErrorPassthroughRule {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of ErrorPassthroughRule IDs.
+func (_q *ErrorPassthroughRuleQuery) IDs(ctx context.Context) (ids []int64, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(errorpassthroughrule.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *ErrorPassthroughRuleQuery) IDsX(ctx context.Context) []int64 {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *ErrorPassthroughRuleQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*ErrorPassthroughRuleQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *ErrorPassthroughRuleQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *ErrorPassthroughRuleQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("ent: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *ErrorPassthroughRuleQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the ErrorPassthroughRuleQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *ErrorPassthroughRuleQuery) Clone() *ErrorPassthroughRuleQuery {
+	if _q == nil {
+		return nil
+	}
+	return &ErrorPassthroughRuleQuery{
+		config:     _q.config,
+		ctx:        _q.ctx.Clone(),
+		order:      append([]errorpassthroughrule.OrderOption{}, _q.order...),
+		inters:     append([]Interceptor{}, _q.inters...),
+		predicates: append([]predicate.ErrorPassthroughRule{}, _q.predicates...),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		CreatedAt time.Time `json:"created_at,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.ErrorPassthroughRule.Query().
+//		GroupBy(errorpassthroughrule.FieldCreatedAt).
+//		Aggregate(ent.Count()).
+//		Scan(ctx, &v)
+func (_q *ErrorPassthroughRuleQuery) GroupBy(field string, fields ...string) *ErrorPassthroughRuleGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &ErrorPassthroughRuleGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = errorpassthroughrule.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		CreatedAt time.Time `json:"created_at,omitempty"`
+//	}
+//
+//	client.ErrorPassthroughRule.Query().
+//		Select(errorpassthroughrule.FieldCreatedAt).
+//		Scan(ctx, &v)
+func (_q *ErrorPassthroughRuleQuery) Select(fields ...string) *ErrorPassthroughRuleSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &ErrorPassthroughRuleSelect{ErrorPassthroughRuleQuery: _q}
+	sbuild.label = errorpassthroughrule.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a ErrorPassthroughRuleSelect configured with the given aggregations.
+func (_q *ErrorPassthroughRuleQuery) Aggregate(fns ...AggregateFunc) *ErrorPassthroughRuleSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *ErrorPassthroughRuleQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("ent: uninitialized interceptor (forgotten import ent/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !errorpassthroughrule.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *ErrorPassthroughRuleQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*ErrorPassthroughRule, error) {
+	var (
+		nodes = []*ErrorPassthroughRule{}
+		_spec = _q.querySpec()
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*ErrorPassthroughRule).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &ErrorPassthroughRule{config: _q.config}
+		nodes = append(nodes, node)
+		return node.assignValues(columns, values)
+	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	return nodes, nil
+}
+
+func (_q *ErrorPassthroughRuleQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *ErrorPassthroughRuleQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(errorpassthroughrule.Table, errorpassthroughrule.Columns, sqlgraph.NewFieldSpec(errorpassthroughrule.FieldID, field.TypeInt64))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, errorpassthroughrule.FieldID)
+		for i := range fields {
+			if fields[i] != errorpassthroughrule.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *ErrorPassthroughRuleQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(errorpassthroughrule.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = errorpassthroughrule.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *ErrorPassthroughRuleQuery) ForUpdate(opts ...sql.LockOption) *ErrorPassthroughRuleQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *ErrorPassthroughRuleQuery) ForShare(opts ...sql.LockOption) *ErrorPassthroughRuleQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
+// ErrorPassthroughRuleGroupBy is the group-by builder for ErrorPassthroughRule entities.
+type ErrorPassthroughRuleGroupBy struct {
+	selector
+	build *ErrorPassthroughRuleQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *ErrorPassthroughRuleGroupBy) Aggregate(fns ...AggregateFunc) *ErrorPassthroughRuleGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *ErrorPassthroughRuleGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*ErrorPassthroughRuleQuery, *ErrorPassthroughRuleGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *ErrorPassthroughRuleGroupBy) sqlScan(ctx context.Context, root *ErrorPassthroughRuleQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// ErrorPassthroughRuleSelect is the builder for selecting fields of ErrorPassthroughRule entities.
+type ErrorPassthroughRuleSelect struct {
+	*ErrorPassthroughRuleQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *ErrorPassthroughRuleSelect) Aggregate(fns ...AggregateFunc) *ErrorPassthroughRuleSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *ErrorPassthroughRuleSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*ErrorPassthroughRuleQuery, *ErrorPassthroughRuleSelect](ctx, _s.ErrorPassthroughRuleQuery, _s, _s.inters, v)
+}
+
+func (_s *ErrorPassthroughRuleSelect) sqlScan(ctx context.Context, root *ErrorPassthroughRuleQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

backend/ent/hook/hook.go

@@ -69,6 +69,18 @@ func (f AnnouncementReadFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.V
 	return nil, fmt.Errorf("unexpected mutation type %T. expect *ent.AnnouncementReadMutation", m)
 }
 
+// The ErrorPassthroughRuleFunc type is an adapter to allow the use of ordinary
+// function as ErrorPassthroughRule mutator.
+type ErrorPassthroughRuleFunc func(context.Context, *ent.ErrorPassthroughRuleMutation) (ent.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f ErrorPassthroughRuleFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.Value, error) {
+	if mv, ok := m.(*ent.ErrorPassthroughRuleMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *ent.ErrorPassthroughRuleMutation", m)
+}
+
 // The GroupFunc type is an adapter to allow the use of ordinary
 // function as Group mutator.
 type GroupFunc func(context.Context, *ent.GroupMutation) (ent.Value, error)

backend/ent/intercept/intercept.go

@@ -13,6 +13,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/announcement"
 	"github.com/Wei-Shaw/sub2api/ent/announcementread"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
+	"github.com/Wei-Shaw/sub2api/ent/errorpassthroughrule"
 	"github.com/Wei-Shaw/sub2api/ent/group"
 	"github.com/Wei-Shaw/sub2api/ent/predicate"
 	"github.com/Wei-Shaw/sub2api/ent/promocode"
@@ -220,6 +221,33 @@ func (f TraverseAnnouncementRead) Traverse(ctx context.Context, q ent.Query) err
 	return fmt.Errorf("unexpected query type %T. expect *ent.AnnouncementReadQuery", q)
 }
 
+// The ErrorPassthroughRuleFunc type is an adapter to allow the use of ordinary function as a Querier.
+type ErrorPassthroughRuleFunc func(context.Context, *ent.ErrorPassthroughRuleQuery) (ent.Value, error)
+
+// Query calls f(ctx, q).
+func (f ErrorPassthroughRuleFunc) Query(ctx context.Context, q ent.Query) (ent.Value, error) {
+	if q, ok := q.(*ent.ErrorPassthroughRuleQuery); ok {
+		return f(ctx, q)
+	}
+	return nil, fmt.Errorf("unexpected query type %T. expect *ent.ErrorPassthroughRuleQuery", q)
+}
+
+// The TraverseErrorPassthroughRule type is an adapter to allow the use of ordinary function as Traverser.
+type TraverseErrorPassthroughRule func(context.Context, *ent.ErrorPassthroughRuleQuery) error
+
+// Intercept is a dummy implementation of Intercept that returns the next Querier in the pipeline.
+func (f TraverseErrorPassthroughRule) Intercept(next ent.Querier) ent.Querier {
+	return next
+}
+
+// Traverse calls f(ctx, q).
+func (f TraverseErrorPassthroughRule) Traverse(ctx context.Context, q ent.Query) error {
+	if q, ok := q.(*ent.ErrorPassthroughRuleQuery); ok {
+		return f(ctx, q)
+	}
+	return fmt.Errorf("unexpected query type %T. expect *ent.ErrorPassthroughRuleQuery", q)
+}
+
 // The GroupFunc type is an adapter to allow the use of ordinary function as a Querier.
 type GroupFunc func(context.Context, *ent.GroupQuery) (ent.Value, error)
 
@@ -584,6 +612,8 @@ func NewQuery(q ent.Query) (Query, error) {
 		return &query[*ent.AnnouncementQuery, predicate.Announcement, announcement.OrderOption]{typ: ent.TypeAnnouncement, tq: q}, nil
 	case *ent.AnnouncementReadQuery:
 		return &query[*ent.AnnouncementReadQuery, predicate.AnnouncementRead, announcementread.OrderOption]{typ: ent.TypeAnnouncementRead, tq: q}, nil
+	case *ent.ErrorPassthroughRuleQuery:
+		return &query[*ent.ErrorPassthroughRuleQuery, predicate.ErrorPassthroughRule, errorpassthroughrule.OrderOption]{typ: ent.TypeErrorPassthroughRule, tq: q}, nil
 	case *ent.GroupQuery:
 		return &query[*ent.GroupQuery, predicate.Group, group.OrderOption]{typ: ent.TypeGroup, tq: q}, nil
 	case *ent.PromoCodeQuery:

backend/ent/migrate/schema.go

@@ -309,6 +309,42 @@ var (
 			},
 		},
 	}
+	// ErrorPassthroughRulesColumns holds the columns for the "error_passthrough_rules" table.
+	ErrorPassthroughRulesColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt64, Increment: true},
+		{Name: "created_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
+		{Name: "updated_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
+		{Name: "name", Type: field.TypeString, Size: 100},
+		{Name: "enabled", Type: field.TypeBool, Default: true},
+		{Name: "priority", Type: field.TypeInt, Default: 0},
+		{Name: "error_codes", Type: field.TypeJSON, Nullable: true, SchemaType: map[string]string{"postgres": "jsonb"}},
+		{Name: "keywords", Type: field.TypeJSON, Nullable: true, SchemaType: map[string]string{"postgres": "jsonb"}},
+		{Name: "match_mode", Type: field.TypeString, Size: 10, Default: "any"},
+		{Name: "platforms", Type: field.TypeJSON, Nullable: true, SchemaType: map[string]string{"postgres": "jsonb"}},
+		{Name: "passthrough_code", Type: field.TypeBool, Default: true},
+		{Name: "response_code", Type: field.TypeInt, Nullable: true},
+		{Name: "passthrough_body", Type: field.TypeBool, Default: true},
+		{Name: "custom_message", Type: field.TypeString, Nullable: true, Size: 2147483647},
+		{Name: "description", Type: field.TypeString, Nullable: true, Size: 2147483647},
+	}
+	// ErrorPassthroughRulesTable holds the schema information for the "error_passthrough_rules" table.
+	ErrorPassthroughRulesTable = &schema.Table{
+		Name:       "error_passthrough_rules",
+		Columns:    ErrorPassthroughRulesColumns,
+		PrimaryKey: []*schema.Column{ErrorPassthroughRulesColumns[0]},
+		Indexes: []*schema.Index{
+			{
+				Name:    "errorpassthroughrule_enabled",
+				Unique:  false,
+				Columns: []*schema.Column{ErrorPassthroughRulesColumns[4]},
+			},
+			{
+				Name:    "errorpassthroughrule_priority",
+				Unique:  false,
+				Columns: []*schema.Column{ErrorPassthroughRulesColumns[5]},
+			},
+		},
+	}
 	// GroupsColumns holds the columns for the "groups" table.
 	GroupsColumns = []*schema.Column{
 		{Name: "id", Type: field.TypeInt64, Increment: true},
@@ -950,6 +986,7 @@ var (
 		AccountGroupsTable,
 		AnnouncementsTable,
 		AnnouncementReadsTable,
+		ErrorPassthroughRulesTable,
 		GroupsTable,
 		PromoCodesTable,
 		PromoCodeUsagesTable,
@@ -989,6 +1026,9 @@ func init() {
 	AnnouncementReadsTable.Annotation = &entsql.Annotation{
 		Table: "announcement_reads",
 	}
+	ErrorPassthroughRulesTable.Annotation = &entsql.Annotation{
+		Table: "error_passthrough_rules",
+	}
 	GroupsTable.Annotation = &entsql.Annotation{
 		Table: "groups",
 	}

backend/ent/predicate/predicate.go

@@ -21,6 +21,9 @@ type Announcement func(*sql.Selector)
 // AnnouncementRead is the predicate function for announcementread builders.
 type AnnouncementRead func(*sql.Selector)
 
+// ErrorPassthroughRule is the predicate function for errorpassthroughrule builders.
+type ErrorPassthroughRule func(*sql.Selector)
+
 // Group is the predicate function for group builders.
 type Group func(*sql.Selector)
 

backend/ent/runtime/runtime.go

@@ -10,6 +10,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/announcement"
 	"github.com/Wei-Shaw/sub2api/ent/announcementread"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
+	"github.com/Wei-Shaw/sub2api/ent/errorpassthroughrule"
 	"github.com/Wei-Shaw/sub2api/ent/group"
 	"github.com/Wei-Shaw/sub2api/ent/promocode"
 	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
@@ -270,6 +271,61 @@ func init() {
 	announcementreadDescCreatedAt := announcementreadFields[3].Descriptor()
 	// announcementread.DefaultCreatedAt holds the default value on creation for the created_at field.
 	announcementread.DefaultCreatedAt = announcementreadDescCreatedAt.Default.(func() time.Time)
+	errorpassthroughruleMixin := schema.ErrorPassthroughRule{}.Mixin()
+	errorpassthroughruleMixinFields0 := errorpassthroughruleMixin[0].Fields()
+	_ = errorpassthroughruleMixinFields0
+	errorpassthroughruleFields := schema.ErrorPassthroughRule{}.Fields()
+	_ = errorpassthroughruleFields
+	// errorpassthroughruleDescCreatedAt is the schema descriptor for created_at field.
+	errorpassthroughruleDescCreatedAt := errorpassthroughruleMixinFields0[0].Descriptor()
+	// errorpassthroughrule.DefaultCreatedAt holds the default value on creation for the created_at field.
+	errorpassthroughrule.DefaultCreatedAt = errorpassthroughruleDescCreatedAt.Default.(func() time.Time)
+	// errorpassthroughruleDescUpdatedAt is the schema descriptor for updated_at field.
+	errorpassthroughruleDescUpdatedAt := errorpassthroughruleMixinFields0[1].Descriptor()
+	// errorpassthroughrule.DefaultUpdatedAt holds the default value on creation for the updated_at field.
+	errorpassthroughrule.DefaultUpdatedAt = errorpassthroughruleDescUpdatedAt.Default.(func() time.Time)
+	// errorpassthroughrule.UpdateDefaultUpdatedAt holds the default value on update for the updated_at field.
+	errorpassthroughrule.UpdateDefaultUpdatedAt = errorpassthroughruleDescUpdatedAt.UpdateDefault.(func() time.Time)
+	// errorpassthroughruleDescName is the schema descriptor for name field.
+	errorpassthroughruleDescName := errorpassthroughruleFields[0].Descriptor()
+	// errorpassthroughrule.NameValidator is a validator for the "name" field. It is called by the builders before save.
+	errorpassthroughrule.NameValidator = func() func(string) error {
+		validators := errorpassthroughruleDescName.Validators
+		fns := [...]func(string) error{
+			validators[0].(func(string) error),
+			validators[1].(func(string) error),
+		}
+		return func(name string) error {
+			for _, fn := range fns {
+				if err := fn(name); err != nil {
+					return err
+				}
+			}
+			return nil
+		}
+	}()
+	// errorpassthroughruleDescEnabled is the schema descriptor for enabled field.
+	errorpassthroughruleDescEnabled := errorpassthroughruleFields[1].Descriptor()
+	// errorpassthroughrule.DefaultEnabled holds the default value on creation for the enabled field.
+	errorpassthroughrule.DefaultEnabled = errorpassthroughruleDescEnabled.Default.(bool)
+	// errorpassthroughruleDescPriority is the schema descriptor for priority field.
+	errorpassthroughruleDescPriority := errorpassthroughruleFields[2].Descriptor()
+	// errorpassthroughrule.DefaultPriority holds the default value on creation for the priority field.
+	errorpassthroughrule.DefaultPriority = errorpassthroughruleDescPriority.Default.(int)
+	// errorpassthroughruleDescMatchMode is the schema descriptor for match_mode field.
+	errorpassthroughruleDescMatchMode := errorpassthroughruleFields[5].Descriptor()
+	// errorpassthroughrule.DefaultMatchMode holds the default value on creation for the match_mode field.
+	errorpassthroughrule.DefaultMatchMode = errorpassthroughruleDescMatchMode.Default.(string)
+	// errorpassthroughrule.MatchModeValidator is a validator for the "match_mode" field. It is called by the builders before save.
+	errorpassthroughrule.MatchModeValidator = errorpassthroughruleDescMatchMode.Validators[0].(func(string) error)
+	// errorpassthroughruleDescPassthroughCode is the schema descriptor for passthrough_code field.
+	errorpassthroughruleDescPassthroughCode := errorpassthroughruleFields[7].Descriptor()
+	// errorpassthroughrule.DefaultPassthroughCode holds the default value on creation for the passthrough_code field.
+	errorpassthroughrule.DefaultPassthroughCode = errorpassthroughruleDescPassthroughCode.Default.(bool)
+	// errorpassthroughruleDescPassthroughBody is the schema descriptor for passthrough_body field.
+	errorpassthroughruleDescPassthroughBody := errorpassthroughruleFields[9].Descriptor()
+	// errorpassthroughrule.DefaultPassthroughBody holds the default value on creation for the passthrough_body field.
+	errorpassthroughrule.DefaultPassthroughBody = errorpassthroughruleDescPassthroughBody.Default.(bool)
 	groupMixin := schema.Group{}.Mixin()
 	groupMixinHooks1 := groupMixin[1].Hooks()
 	group.Hooks[0] = groupMixinHooks1[0]

backend/ent/schema/error_passthrough_rule.go

+// Package schema 定义 Ent ORM 的数据库 schema。
+package schema
+
+import (
+	"github.com/Wei-Shaw/sub2api/ent/schema/mixins"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+)
+
+// ErrorPassthroughRule 定义全局错误透传规则的 schema。
+//
+// 错误透传规则用于控制上游错误如何返回给客户端：
+//   - 匹配条件：错误码 + 关键词组合
+//   - 响应行为：透传原始信息 或 自定义错误信息
+//   - 响应状态码：可指定返回给客户端的状态码
+//   - 平台范围：规则适用的平台（Anthropic、OpenAI、Gemini、Antigravity）
+type ErrorPassthroughRule struct {
+	ent.Schema
+}
+
+// Annotations 返回 schema 的注解配置。
+func (ErrorPassthroughRule) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Annotation{Table: "error_passthrough_rules"},
+	}
+}
+
+// Mixin 返回该 schema 使用的混入组件。
+func (ErrorPassthroughRule) Mixin() []ent.Mixin {
+	return []ent.Mixin{
+		mixins.TimeMixin{},
+	}
+}
+
+// Fields 定义错误透传规则实体的所有字段。
+func (ErrorPassthroughRule) Fields() []ent.Field {
+	return []ent.Field{
+		// name: 规则名称，用于在界面中标识规则
+		field.String("name").
+			MaxLen(100).
+			NotEmpty(),
+
+		// enabled: 是否启用该规则
+		field.Bool("enabled").
+			Default(true),
+
+		// priority: 规则优先级，数值越小优先级越高
+		// 匹配时按优先级顺序检查，命中第一个匹配的规则
+		field.Int("priority").
+			Default(0),
+
+		// error_codes: 匹配的错误码列表（OR关系）
+		// 例如：[422, 400] 表示匹配 422 或 400 错误码
+		field.JSON("error_codes", []int{}).
+			Optional().
+			SchemaType(map[string]string{dialect.Postgres: "jsonb"}),
+
+		// keywords: 匹配的关键词列表（OR关系）
+		// 例如：["context limit", "model not supported"]
+		// 关键词匹配不区分大小写
+		field.JSON("keywords", []string{}).
+			Optional().
+			SchemaType(map[string]string{dialect.Postgres: "jsonb"}),
+
+		// match_mode: 匹配模式
+		// - "any": 错误码匹配 OR 关键词匹配（任一条件满足即可）
+		// - "all": 错误码匹配 AND 关键词匹配（所有条件都必须满足）
+		field.String("match_mode").
+			MaxLen(10).
+			Default("any"),
+
+		// platforms: 适用平台列表
+		// 例如：["anthropic", "openai", "gemini", "antigravity"]
+		// 空列表表示适用于所有平台
+		field.JSON("platforms", []string{}).
+			Optional().
+			SchemaType(map[string]string{dialect.Postgres: "jsonb"}),
+
+		// passthrough_code: 是否透传上游原始状态码
+		// true: 使用上游返回的状态码
+		// false: 使用 response_code 指定的状态码
+		field.Bool("passthrough_code").
+			Default(true),
+
+		// response_code: 自定义响应状态码
+		// 当 passthrough_code=false 时使用此状态码
+		field.Int("response_code").
+			Optional().
+			Nillable(),
+
+		// passthrough_body: 是否透传上游原始错误信息
+		// true: 使用上游返回的错误信息
+		// false: 使用 custom_message 指定的错误信息
+		field.Bool("passthrough_body").
+			Default(true),
+
+		// custom_message: 自定义错误信息
+		// 当 passthrough_body=false 时使用此错误信息
+		field.Text("custom_message").
+			Optional().
+			Nillable(),
+
+		// description: 规则描述，用于说明规则的用途
+		field.Text("description").
+			Optional().
+			Nillable(),
+	}
+}
+
+// Indexes 定义数据库索引，优化查询性能。
+func (ErrorPassthroughRule) Indexes() []ent.Index {
+	return []ent.Index{
+		index.Fields("enabled"),  // 筛选启用的规则
+		index.Fields("priority"), // 按优先级排序
+	}
+}

backend/ent/tx.go

@@ -24,6 +24,8 @@ type Tx struct {
 	Announcement *AnnouncementClient
 	// AnnouncementRead is the client for interacting with the AnnouncementRead builders.
 	AnnouncementRead *AnnouncementReadClient
+	// ErrorPassthroughRule is the client for interacting with the ErrorPassthroughRule builders.
+	ErrorPassthroughRule *ErrorPassthroughRuleClient
 	// Group is the client for interacting with the Group builders.
 	Group *GroupClient
 	// PromoCode is the client for interacting with the PromoCode builders.
@@ -186,6 +188,7 @@ func (tx *Tx) init() {
 	tx.AccountGroup = NewAccountGroupClient(tx.config)
 	tx.Announcement = NewAnnouncementClient(tx.config)
 	tx.AnnouncementRead = NewAnnouncementReadClient(tx.config)
+	tx.ErrorPassthroughRule = NewErrorPassthroughRuleClient(tx.config)
 	tx.Group = NewGroupClient(tx.config)
 	tx.PromoCode = NewPromoCodeClient(tx.config)
 	tx.PromoCodeUsage = NewPromoCodeUsageClient(tx.config)

backend/internal/handler/admin/error_passthrough_handler.go

+package admin
+
+import (
+	"strconv"
+
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/gin-gonic/gin"
+)
+
+// ErrorPassthroughHandler 处理错误透传规则的 HTTP 请求
+type ErrorPassthroughHandler struct {
+	service *service.ErrorPassthroughService
+}
+
+// NewErrorPassthroughHandler 创建错误透传规则处理器
+func NewErrorPassthroughHandler(service *service.ErrorPassthroughService) *ErrorPassthroughHandler {
+	return &ErrorPassthroughHandler{service: service}
+}
+
+// CreateErrorPassthroughRuleRequest 创建规则请求
+type CreateErrorPassthroughRuleRequest struct {
+	Name            string   `json:"name" binding:"required"`
+	Enabled         *bool    `json:"enabled"`
+	Priority        int      `json:"priority"`
+	ErrorCodes      []int    `json:"error_codes"`
+	Keywords        []string `json:"keywords"`
+	MatchMode       string   `json:"match_mode"`
+	Platforms       []string `json:"platforms"`
+	PassthroughCode *bool    `json:"passthrough_code"`
+	ResponseCode    *int     `json:"response_code"`
+	PassthroughBody *bool    `json:"passthrough_body"`
+	CustomMessage   *string  `json:"custom_message"`
+	Description     *string  `json:"description"`
+}
+
+// UpdateErrorPassthroughRuleRequest 更新规则请求（部分更新，所有字段可选）
+type UpdateErrorPassthroughRuleRequest struct {
+	Name            *string  `json:"name"`
+	Enabled         *bool    `json:"enabled"`
+	Priority        *int     `json:"priority"`
+	ErrorCodes      []int    `json:"error_codes"`
+	Keywords        []string `json:"keywords"`
+	MatchMode       *string  `json:"match_mode"`
+	Platforms       []string `json:"platforms"`
+	PassthroughCode *bool    `json:"passthrough_code"`
+	ResponseCode    *int     `json:"response_code"`
+	PassthroughBody *bool    `json:"passthrough_body"`
+	CustomMessage   *string  `json:"custom_message"`
+	Description     *string  `json:"description"`
+}
+
+// List 获取所有规则
+// GET /api/v1/admin/error-passthrough-rules
+func (h *ErrorPassthroughHandler) List(c *gin.Context) {
+	rules, err := h.service.List(c.Request.Context())
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+	response.Success(c, rules)
+}
+
+// GetByID 根据 ID 获取规则
+// GET /api/v1/admin/error-passthrough-rules/:id
+func (h *ErrorPassthroughHandler) GetByID(c *gin.Context) {
+	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
+	if err != nil {
+		response.BadRequest(c, "Invalid rule ID")
+		return
+	}
+
+	rule, err := h.service.GetByID(c.Request.Context(), id)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+	if rule == nil {
+		response.NotFound(c, "Rule not found")
+		return
+	}
+
+	response.Success(c, rule)
+}
+
+// Create 创建规则
+// POST /api/v1/admin/error-passthrough-rules
+func (h *ErrorPassthroughHandler) Create(c *gin.Context) {
+	var req CreateErrorPassthroughRuleRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	rule := &model.ErrorPassthroughRule{
+		Name:       req.Name,
+		Priority:   req.Priority,
+		ErrorCodes: req.ErrorCodes,
+		Keywords:   req.Keywords,
+		Platforms:  req.Platforms,
+	}
+
+	// 设置默认值
+	if req.Enabled != nil {
+		rule.Enabled = *req.Enabled
+	} else {
+		rule.Enabled = true
+	}
+	if req.MatchMode != "" {
+		rule.MatchMode = req.MatchMode
+	} else {
+		rule.MatchMode = model.MatchModeAny
+	}
+	if req.PassthroughCode != nil {
+		rule.PassthroughCode = *req.PassthroughCode
+	} else {
+		rule.PassthroughCode = true
+	}
+	if req.PassthroughBody != nil {
+		rule.PassthroughBody = *req.PassthroughBody
+	} else {
+		rule.PassthroughBody = true
+	}
+	rule.ResponseCode = req.ResponseCode
+	rule.CustomMessage = req.CustomMessage
+	rule.Description = req.Description
+
+	// 确保切片不为 nil
+	if rule.ErrorCodes == nil {
+		rule.ErrorCodes = []int{}
+	}
+	if rule.Keywords == nil {
+		rule.Keywords = []string{}
+	}
+	if rule.Platforms == nil {
+		rule.Platforms = []string{}
+	}
+
+	created, err := h.service.Create(c.Request.Context(), rule)
+	if err != nil {
+		if _, ok := err.(*model.ValidationError); ok {
+			response.BadRequest(c, err.Error())
+			return
+		}
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	response.Success(c, created)
+}
+
+// Update 更新规则（支持部分更新）
+// PUT /api/v1/admin/error-passthrough-rules/:id
+func (h *ErrorPassthroughHandler) Update(c *gin.Context) {
+	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
+	if err != nil {
+		response.BadRequest(c, "Invalid rule ID")
+		return
+	}
+
+	var req UpdateErrorPassthroughRuleRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	// 先获取现有规则
+	existing, err := h.service.GetByID(c.Request.Context(), id)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+	if existing == nil {
+		response.NotFound(c, "Rule not found")
+		return
+	}
+
+	// 部分更新：只更新请求中提供的字段
+	rule := &model.ErrorPassthroughRule{
+		ID:              id,
+		Name:            existing.Name,
+		Enabled:         existing.Enabled,
+		Priority:        existing.Priority,
+		ErrorCodes:      existing.ErrorCodes,
+		Keywords:        existing.Keywords,
+		MatchMode:       existing.MatchMode,
+		Platforms:       existing.Platforms,
+		PassthroughCode: existing.PassthroughCode,
+		ResponseCode:    existing.ResponseCode,
+		PassthroughBody: existing.PassthroughBody,
+		CustomMessage:   existing.CustomMessage,
+		Description:     existing.Description,
+	}
+
+	// 应用请求中提供的更新
+	if req.Name != nil {
+		rule.Name = *req.Name
+	}
+	if req.Enabled != nil {
+		rule.Enabled = *req.Enabled
+	}
+	if req.Priority != nil {
+		rule.Priority = *req.Priority
+	}
+	if req.ErrorCodes != nil {
+		rule.ErrorCodes = req.ErrorCodes
+	}
+	if req.Keywords != nil {
+		rule.Keywords = req.Keywords
+	}
+	if req.MatchMode != nil {
+		rule.MatchMode = *req.MatchMode
+	}
+	if req.Platforms != nil {
+		rule.Platforms = req.Platforms
+	}
+	if req.PassthroughCode != nil {
+		rule.PassthroughCode = *req.PassthroughCode
+	}
+	if req.ResponseCode != nil {
+		rule.ResponseCode = req.ResponseCode
+	}
+	if req.PassthroughBody != nil {
+		rule.PassthroughBody = *req.PassthroughBody
+	}
+	if req.CustomMessage != nil {
+		rule.CustomMessage = req.CustomMessage
+	}
+	if req.Description != nil {
+		rule.Description = req.Description
+	}
+
+	// 确保切片不为 nil
+	if rule.ErrorCodes == nil {
+		rule.ErrorCodes = []int{}
+	}
+	if rule.Keywords == nil {
+		rule.Keywords = []string{}
+	}
+	if rule.Platforms == nil {
+		rule.Platforms = []string{}
+	}
+
+	updated, err := h.service.Update(c.Request.Context(), rule)
+	if err != nil {
+		if _, ok := err.(*model.ValidationError); ok {
+			response.BadRequest(c, err.Error())
+			return
+		}
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	response.Success(c, updated)
+}
+
+// Delete 删除规则
+// DELETE /api/v1/admin/error-passthrough-rules/:id
+func (h *ErrorPassthroughHandler) Delete(c *gin.Context) {
+	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
+	if err != nil {
+		response.BadRequest(c, "Invalid rule ID")
+		return
+	}
+
+	if err := h.service.Delete(c.Request.Context(), id); err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	response.Success(c, gin.H{"message": "Rule deleted successfully"})
+}

backend/internal/handler/gateway_handler.go

@@ -33,6 +33,7 @@ type GatewayHandler struct {
 	billingCacheService       *service.BillingCacheService
 	usageService              *service.UsageService
 	apiKeyService             *service.APIKeyService
+	errorPassthroughService   *service.ErrorPassthroughService
 	concurrencyHelper         *ConcurrencyHelper
 	maxAccountSwitches        int
 	maxAccountSwitchesGemini  int
@@ -48,6 +49,7 @@ func NewGatewayHandler(
 	billingCacheService *service.BillingCacheService,
 	usageService *service.UsageService,
 	apiKeyService *service.APIKeyService,
+	errorPassthroughService *service.ErrorPassthroughService,
 	cfg *config.Config,
 ) *GatewayHandler {
 	pingInterval := time.Duration(0)
@@ -70,6 +72,7 @@ func NewGatewayHandler(
 		billingCacheService:       billingCacheService,
 		usageService:              usageService,
 		apiKeyService:             apiKeyService,
+		errorPassthroughService:   errorPassthroughService,
 		concurrencyHelper:         NewConcurrencyHelper(concurrencyService, SSEPingFormatClaude, pingInterval),
 		maxAccountSwitches:        maxAccountSwitches,
 		maxAccountSwitchesGemini:  maxAccountSwitchesGemini,
@@ -201,7 +204,7 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 		maxAccountSwitches := h.maxAccountSwitchesGemini
 		switchCount := 0
 		failedAccountIDs := make(map[int64]struct{})
-		lastFailoverStatus := 0
+		var lastFailoverErr *service.UpstreamFailoverError
 
 		for {
 			selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionKey, reqModel, failedAccountIDs, "") // Gemini 不使用会话限制
@@ -210,7 +213,11 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 					h.handleStreamingAwareError(c, http.StatusServiceUnavailable, "api_error", "No available accounts: "+err.Error(), streamStarted)
 					return
 				}
-				h.handleFailoverExhausted(c, lastFailoverStatus, streamStarted)
+				if lastFailoverErr != nil {
+					h.handleFailoverExhausted(c, lastFailoverErr, service.PlatformGemini, streamStarted)
+				} else {
+					h.handleFailoverExhaustedSimple(c, 502, streamStarted)
+				}
 				return
 			}
 			account := selection.Account
@@ -301,9 +308,9 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 				var failoverErr *service.UpstreamFailoverError
 				if errors.As(err, &failoverErr) {
 					failedAccountIDs[account.ID] = struct{}{}
-					lastFailoverStatus = failoverErr.StatusCode
+					lastFailoverErr = failoverErr
 					if switchCount >= maxAccountSwitches {
-						h.handleFailoverExhausted(c, lastFailoverStatus, streamStarted)
+						h.handleFailoverExhausted(c, failoverErr, service.PlatformGemini, streamStarted)
 						return
 					}
 					switchCount++
@@ -352,7 +359,7 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 		maxAccountSwitches := h.maxAccountSwitches
 		switchCount := 0
 		failedAccountIDs := make(map[int64]struct{})
-		lastFailoverStatus := 0
+		var lastFailoverErr *service.UpstreamFailoverError
 		retryWithFallback := false
 
 		for {
@@ -363,7 +370,11 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 					h.handleStreamingAwareError(c, http.StatusServiceUnavailable, "api_error", "No available accounts: "+err.Error(), streamStarted)
 					return
 				}
-				h.handleFailoverExhausted(c, lastFailoverStatus, streamStarted)
+				if lastFailoverErr != nil {
+					h.handleFailoverExhausted(c, lastFailoverErr, platform, streamStarted)
+				} else {
+					h.handleFailoverExhaustedSimple(c, 502, streamStarted)
+				}
 				return
 			}
 			account := selection.Account
@@ -487,9 +498,9 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 				var failoverErr *service.UpstreamFailoverError
 				if errors.As(err, &failoverErr) {
 					failedAccountIDs[account.ID] = struct{}{}
-					lastFailoverStatus = failoverErr.StatusCode
+					lastFailoverErr = failoverErr
 					if switchCount >= maxAccountSwitches {
-						h.handleFailoverExhausted(c, lastFailoverStatus, streamStarted)
+						h.handleFailoverExhausted(c, failoverErr, account.Platform, streamStarted)
 						return
 					}
 					switchCount++
@@ -755,7 +766,37 @@ func (h *GatewayHandler) handleConcurrencyError(c *gin.Context, err error, slotT
 		fmt.Sprintf("Concurrency limit exceeded for %s, please retry later", slotType), streamStarted)
 }
 
-func (h *GatewayHandler) handleFailoverExhausted(c *gin.Context, statusCode int, streamStarted bool) {
+func (h *GatewayHandler) handleFailoverExhausted(c *gin.Context, failoverErr *service.UpstreamFailoverError, platform string, streamStarted bool) {
+	statusCode := failoverErr.StatusCode
+	responseBody := failoverErr.ResponseBody
+
+	// 先检查透传规则
+	if h.errorPassthroughService != nil && len(responseBody) > 0 {
+		if rule := h.errorPassthroughService.MatchRule(platform, statusCode, responseBody); rule != nil {
+			// 确定响应状态码
+			respCode := statusCode
+			if !rule.PassthroughCode && rule.ResponseCode != nil {
+				respCode = *rule.ResponseCode
+			}
+
+			// 确定响应消息
+			msg := service.ExtractUpstreamErrorMessage(responseBody)
+			if !rule.PassthroughBody && rule.CustomMessage != nil {
+				msg = *rule.CustomMessage
+			}
+
+			h.handleStreamingAwareError(c, respCode, "upstream_error", msg, streamStarted)
+			return
+		}
+	}
+
+	// 使用默认的错误映射
+	status, errType, errMsg := h.mapUpstreamError(statusCode)
+	h.handleStreamingAwareError(c, status, errType, errMsg, streamStarted)
+}
+
+// handleFailoverExhaustedSimple 简化版本，用于没有响应体的情况
+func (h *GatewayHandler) handleFailoverExhaustedSimple(c *gin.Context, statusCode int, streamStarted bool) {
 	status, errType, errMsg := h.mapUpstreamError(statusCode)
 	h.handleStreamingAwareError(c, status, errType, errMsg, streamStarted)
 }