706 lines
25 KiB
Go
706 lines
25 KiB
Go
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package service
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import (
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"bufio"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"strings"
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"time"
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"github.com/Wei-Shaw/sub2api/internal/config"
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"github.com/Wei-Shaw/sub2api/internal/pkg/apicompat"
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"github.com/gin-gonic/gin"
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"github.com/tidwall/gjson"
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)
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const (
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openAIWSClientReadLimitBytesDefault int64 = 64 * 1024 * 1024
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openAIWSHTTPBridgeThresholdBytesDefault int64 = 15 * 1024 * 1024
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openAIWSHTTPBridgeErrorBodyLimitBytes = 64 * 1024
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)
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const openAIWSHTTPBridgeToolStateContextKey = "openai_ws_http_bridge_tool_state"
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type openAIWSHTTPBridgeToolState struct {
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ClientMapping apicompat.ResponsesClientToolMapping
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LoweredTools json.RawMessage
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}
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func openAIWSHTTPBridgeToolStateFromContext(c *gin.Context) (openAIWSHTTPBridgeToolState, bool) {
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if c == nil {
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return openAIWSHTTPBridgeToolState{}, false
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}
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value, ok := c.Get(openAIWSHTTPBridgeToolStateContextKey)
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state, typed := value.(openAIWSHTTPBridgeToolState)
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return state, ok && typed
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}
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func setOpenAIWSHTTPBridgeToolState(c *gin.Context, state openAIWSHTTPBridgeToolState) {
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if c == nil {
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return
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}
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state.LoweredTools = append(json.RawMessage(nil), state.LoweredTools...)
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c.Set(openAIWSHTTPBridgeToolStateContextKey, state)
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}
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func decodeOpenAIWSHTTPBridgeLoweredTools(raw json.RawMessage) []any {
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if len(raw) == 0 {
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return nil
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}
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var tools []any
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if err := json.Unmarshal(raw, &tools); err != nil {
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return nil
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}
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return tools
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}
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func openAIWSHTTPBridgeRawField(body []byte, name string) (json.RawMessage, bool) {
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var fields map[string]json.RawMessage
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if err := json.Unmarshal(body, &fields); err != nil {
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return nil, false
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}
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raw, present := fields[name]
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return append(json.RawMessage(nil), raw...), present
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}
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func openAIWSHTTPBridgeToolUpstreamName(account *Account) string {
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if account != nil && account.Platform == PlatformGrok {
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return "Grok WS HTTP bridge"
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}
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return "OpenAI WS HTTP bridge"
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}
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// ResolveOpenAIWSClientFirstMessageTimeout returns the effective client ingress deadline.
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func ResolveOpenAIWSClientFirstMessageTimeout(cfg *config.Config) time.Duration {
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seconds := config.DefaultOpenAIWSClientFirstMessageTimeoutSeconds
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if cfg != nil && cfg.Gateway.OpenAIWS.ClientFirstMessageTimeoutSeconds > 0 {
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seconds = cfg.Gateway.OpenAIWS.ClientFirstMessageTimeoutSeconds
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}
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return time.Duration(seconds) * time.Second
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}
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func ResolveOpenAIWSClientReadLimitBytes(cfg *config.Config) int64 {
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if cfg == nil || cfg.Gateway.OpenAIWS.ClientReadLimitBytes <= 0 {
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return openAIWSClientReadLimitBytesDefault
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}
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return cfg.Gateway.OpenAIWS.ClientReadLimitBytes
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}
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func (s *OpenAIGatewayService) openAIWSHTTPBridgeEnabled() bool {
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return s != nil && s.cfg != nil && s.cfg.Gateway.OpenAIWS.HTTPBridgeEnabled
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}
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func (s *OpenAIGatewayService) openAIWSHTTPBridgeThresholdBytes() int64 {
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if s == nil || s.cfg == nil || s.cfg.Gateway.OpenAIWS.HTTPBridgeThresholdBytes <= 0 {
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return openAIWSHTTPBridgeThresholdBytesDefault
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}
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return s.cfg.Gateway.OpenAIWS.HTTPBridgeThresholdBytes
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}
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func (s *OpenAIGatewayService) shouldBridgeOpenAIWSHTTP(account *Account, payloadBytes int, previousResponseID string) bool {
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if account != nil && account.Platform == PlatformGrok {
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return true
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}
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if !s.openAIWSHTTPBridgeEnabled() {
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return false
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}
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if strings.TrimSpace(previousResponseID) != "" {
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return false
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}
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threshold := s.openAIWSHTTPBridgeThresholdBytes()
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return threshold > 0 && int64(payloadBytes) >= threshold
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}
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func prepareOpenAIWSHTTPBridgeBody(payload []byte) ([]byte, error) {
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var body map[string]any
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if err := json.Unmarshal(payload, &body); err != nil {
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return nil, err
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}
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if body == nil {
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return nil, errors.New("response.create payload must be a JSON object")
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}
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delete(body, "type")
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delete(body, "generate")
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delete(body, "previous_response_id")
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body["stream"] = true
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return json.Marshal(body)
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}
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type openAIWSToolCallReplayCollector struct {
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items []json.RawMessage
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seen map[string]struct{}
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allItems []json.RawMessage
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allSeen map[string]struct{}
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}
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func (c *openAIWSToolCallReplayCollector) AddEvent(eventType string, message []byte) {
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switch strings.TrimSpace(eventType) {
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case "response.output_item.done":
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item := gjson.GetBytes(message, "item")
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c.addAllItem(item)
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c.addItem(item)
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case "response.completed", "response.done":
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output := gjson.GetBytes(message, "response.output")
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if !output.IsArray() {
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return
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}
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for _, item := range output.Array() {
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c.addAllItem(item)
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c.addItem(item)
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}
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}
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}
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func (c *openAIWSToolCallReplayCollector) Items() []json.RawMessage {
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return cloneOpenAIWSRawMessages(c.items)
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}
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func (c *openAIWSToolCallReplayCollector) AllItems() []json.RawMessage {
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return cloneOpenAIWSRawMessages(c.allItems)
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}
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func (c *openAIWSToolCallReplayCollector) addAllItem(item gjson.Result) {
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if !item.Exists() || item.Type != gjson.JSON {
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return
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}
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raw := strings.TrimSpace(item.Raw)
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if raw == "" || !strings.HasPrefix(raw, "{") || strings.TrimSpace(item.Get("type").String()) == "" {
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return
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}
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key := strings.TrimSpace(item.Get("id").String())
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if key == "" {
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key = strings.TrimSpace(item.Get("call_id").String())
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}
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if key == "" {
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key = raw
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}
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if c.allSeen == nil {
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c.allSeen = make(map[string]struct{})
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}
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if _, ok := c.allSeen[key]; ok {
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return
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}
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c.allSeen[key] = struct{}{}
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c.allItems = append(c.allItems, json.RawMessage(raw))
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}
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func (c *openAIWSToolCallReplayCollector) addItem(item gjson.Result) {
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if !item.Exists() || item.Type != gjson.JSON {
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return
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}
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raw := strings.TrimSpace(item.Raw)
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if raw == "" || !strings.HasPrefix(raw, "{") {
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return
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}
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if !isCodexToolCallContextItemType(item.Get("type").String()) {
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return
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}
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key := strings.TrimSpace(item.Get("id").String())
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if key == "" {
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key = strings.TrimSpace(item.Get("call_id").String())
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}
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if key == "" {
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key = raw
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}
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if c.seen == nil {
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c.seen = make(map[string]struct{})
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}
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if _, ok := c.seen[key]; ok {
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return
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}
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c.seen[key] = struct{}{}
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c.items = append(c.items, json.RawMessage(raw))
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}
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func buildOpenAIWSHTTPBridgeErrorEvent(statusCode int, message string) []byte {
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message = strings.TrimSpace(message)
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if message == "" {
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message = http.StatusText(statusCode)
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}
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if message == "" {
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message = "upstream request failed"
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}
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event := map[string]any{
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"type": "error",
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"status": statusCode,
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"error": map[string]any{
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"type": "upstream_error",
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"message": message,
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},
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}
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body, err := json.Marshal(event)
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if err != nil {
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return []byte(`{"type":"error","error":{"type":"upstream_error","message":"upstream request failed"}}`)
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}
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return body
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}
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func (s *OpenAIGatewayService) proxyOpenAIWSHTTPBridgeTurn(
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ctx context.Context,
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c *gin.Context,
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account *Account,
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token string,
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payload []byte,
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payloadBytes int,
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originalModel string,
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imageBillingModel string,
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imageSizeTier string,
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imageInputSize string,
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grokCacheIdentity string,
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turn int,
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writeClientMessage func([]byte) error,
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) (*OpenAIForwardResult, error) {
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if s == nil {
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return nil, errors.New("service is nil")
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}
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if s.httpUpstream == nil {
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return nil, errors.New("openai http upstream is nil")
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}
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if account == nil {
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return nil, errors.New("account is nil")
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}
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if writeClientMessage == nil {
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return nil, errors.New("client websocket writer is nil")
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}
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responseModelObserver := &upstreamResponseModelObserver{}
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body, err := prepareOpenAIWSHTTPBridgeBody(payload)
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if err != nil {
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return nil, fmt.Errorf("prepare http bridge body: %w", err)
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}
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grokIntentSourceBody := append([]byte(nil), body...)
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_, grokExplicitToolsField := openAIWSHTTPBridgeRawField(grokIntentSourceBody, "tools")
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grokExplicitToolIntent := account.Platform == PlatformGrok && hasGrokResponsesToolIntent(grokIntentSourceBody)
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var clientToolMapping apicompat.ResponsesClientToolMapping
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functionToolUpstream := (account.Platform == PlatformOpenAI && account.Type == AccountTypeAPIKey) || account.Platform == PlatformGrok
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if functionToolUpstream {
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if account.Platform == PlatformGrok {
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body, err = sanitizeGrokResponsesInput(body)
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if err != nil {
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return nil, fmt.Errorf("sanitize Grok WS HTTP bridge input: %w", err)
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}
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}
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inheritedState, _ := openAIWSHTTPBridgeToolStateFromContext(c)
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inheritedLoweredTools := decodeOpenAIWSHTTPBridgeLoweredTools(inheritedState.LoweredTools)
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body, clientToolMapping, err = adaptResponsesClientToolsForFunctionUpstreamWithMapping(
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body,
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openAIWSHTTPBridgeToolUpstreamName(account),
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inheritedState.ClientMapping,
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inheritedLoweredTools,
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)
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if err != nil {
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return nil, fmt.Errorf("adapt %s client tools: %w", openAIWSHTTPBridgeToolUpstreamName(account), err)
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}
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if account.Platform == PlatformGrok && !grokExplicitToolsField && !grokExplicitToolIntent && len(inheritedLoweredTools) > 0 && hasGrokResponsesToolIntent(body) {
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// This continuation omitted tools, so the pre-adapter source cannot
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// represent the effective inherited declarations. Cache routing must
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// see the rehydrated tool intent or it will replace client functions
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// with the native-search tool-free route. Explicit current-turn tool
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// intent still uses the original pre-sanitization source above.
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grokIntentSourceBody = append(grokIntentSourceBody[:0], body...)
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}
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loweredTools := inheritedState.LoweredTools
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if currentTools, present := openAIWSHTTPBridgeRawField(body, "tools"); present {
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loweredTools = currentTools
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}
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setOpenAIWSHTTPBridgeToolState(c, openAIWSHTTPBridgeToolState{
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ClientMapping: clientToolMapping,
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LoweredTools: loweredTools,
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})
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}
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upstreamCtx, releaseUpstreamCtx := detachUpstreamContext(ctx)
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var upstreamReq *http.Request
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if account.Platform == PlatformGrok {
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upstreamModel := resolveGrokWSUpstreamModel(account, body, originalModel)
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body, err = patchGrokResponsesBody(body, upstreamModel)
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if err != nil {
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releaseUpstreamCtx()
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return nil, err
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}
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grokMixedCacheIntentBody := append([]byte(nil), body...)
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body, err = applyGrokResponsesCacheIdentity(body, grokIntentSourceBody, grokCacheIdentity, account.IsGrokOAuth())
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if err != nil {
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releaseUpstreamCtx()
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return nil, fmt.Errorf("apply grok prompt cache identity: %w", err)
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}
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body, err = applyGrokFreeRequestToolCacheRoute(c, body, grokMixedCacheIntentBody, account, grokCacheIdentity)
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if err != nil {
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releaseUpstreamCtx()
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return nil, fmt.Errorf("apply grok Free function-tool cache route: %w", err)
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}
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upstreamReq, err = buildGrokResponsesRequest(upstreamCtx, c, account, body, token, grokCacheIdentity, s.cfg, s.settingService)
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} else {
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upstreamReq, err = s.buildUpstreamRequestOpenAIPassthrough(upstreamCtx, c, account, body, token)
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}
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releaseUpstreamCtx()
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if err != nil {
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return nil, err
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}
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if account.Platform != PlatformGrok && isOpenAIResponsesLiteWebSocketPayload(payload) {
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upstreamReq.Header.Set(responsesLiteHeader, "true")
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}
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|
|
proxyURL := ""
|
|||
|
|
if account.ProxyID != nil && account.Proxy != nil {
|
|||
|
|
proxyURL = account.Proxy.URL()
|
|||
|
|
}
|
|||
|
|
if c != nil {
|
|||
|
|
c.Set("openai_passthrough", true)
|
|||
|
|
c.Set("openai_ws_http_bridge", true)
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
turnStart := time.Now()
|
|||
|
|
resp, err := s.httpUpstream.Do(upstreamReq, proxyURL, account.ID, account.Concurrency)
|
|||
|
|
if err != nil {
|
|||
|
|
if turn == 1 {
|
|||
|
|
return nil, s.handleOpenAIUpstreamTransportError(ctx, c, account, err, true)
|
|||
|
|
}
|
|||
|
|
safeErr := sanitizeUpstreamErrorMessage(err.Error())
|
|||
|
|
_ = writeClientMessage(buildOpenAIWSHTTPBridgeErrorEvent(http.StatusBadGateway, "Upstream request failed"))
|
|||
|
|
return nil, fmt.Errorf("upstream http bridge request failed: %s", safeErr)
|
|||
|
|
}
|
|||
|
|
defer func() { _ = resp.Body.Close() }()
|
|||
|
|
|
|||
|
|
if resp.StatusCode >= 400 {
|
|||
|
|
respBody, _ := io.ReadAll(io.LimitReader(resp.Body, openAIWSHTTPBridgeErrorBodyLimitBytes))
|
|||
|
|
upstreamMsg := sanitizeUpstreamErrorMessage(strings.TrimSpace(extractUpstreamErrorMessage(respBody)))
|
|||
|
|
if upstreamMsg == "" {
|
|||
|
|
upstreamMsg = http.StatusText(resp.StatusCode)
|
|||
|
|
}
|
|||
|
|
shouldFailover := s.shouldFailoverOpenAIUpstreamResponse(resp.StatusCode, upstreamMsg, respBody)
|
|||
|
|
if account.Platform == PlatformGrok {
|
|||
|
|
shouldFailover = s.shouldFailoverGrokUpstreamError(resp.StatusCode, respBody)
|
|||
|
|
s.handleGrokAccountUpstreamError(withGrokTeamRateLimitModel(ctx, resolveGrokWSUpstreamModel(account, body, originalModel)), account, resp.StatusCode, resp.Header, respBody)
|
|||
|
|
if shouldFailover && (turn == 1 || resp.StatusCode == http.StatusTooManyRequests) {
|
|||
|
|
return nil, newOpenAIUpstreamFailoverError(resp.StatusCode, resp.Header, respBody, upstreamMsg, false)
|
|||
|
|
}
|
|||
|
|
} else if shouldFailover && (turn == 1 || resp.StatusCode == http.StatusTooManyRequests) {
|
|||
|
|
return nil, s.handleFailoverErrorResponsePassthrough(ctx, resp, c, account, body, respBody)
|
|||
|
|
}
|
|||
|
|
if account.Platform != PlatformGrok && (shouldFailover || shouldCooldownOpenAITransientUpstreamError(resp.StatusCode, respBody)) {
|
|||
|
|
canonicalModel := canonicalOpenAIAccountSchedulingModel(account, originalModel)
|
|||
|
|
s.handleOpenAIAccountUpstreamError(ctx, account, resp.StatusCode, resp.Header, respBody, canonicalModel)
|
|||
|
|
}
|
|||
|
|
_ = writeClientMessage(buildOpenAIWSHTTPBridgeErrorEvent(resp.StatusCode, upstreamMsg))
|
|||
|
|
return nil, fmt.Errorf("upstream http bridge error: status=%d message=%s", resp.StatusCode, upstreamMsg)
|
|||
|
|
}
|
|||
|
|
if account.Platform == PlatformGrok {
|
|||
|
|
s.updateGrokUsageFromResponse(withGrokTeamRateLimitModel(ctx, resolveGrokWSUpstreamModel(account, body, originalModel)), account, resp.Header, resp.StatusCode)
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
responseID := ""
|
|||
|
|
usage := OpenAIUsage{}
|
|||
|
|
imageCounter := newOpenAIImageOutputCounter()
|
|||
|
|
var firstTokenMs *int
|
|||
|
|
reqStream := openAIWSPayloadBoolFromRaw(body, "stream", true)
|
|||
|
|
eventCount := 0
|
|||
|
|
tokenEventCount := 0
|
|||
|
|
terminalEventCount := 0
|
|||
|
|
replayCollector := &openAIWSToolCallReplayCollector{}
|
|||
|
|
firstEventType := ""
|
|||
|
|
lastEventType := ""
|
|||
|
|
upstreamTerminalEvent := ""
|
|||
|
|
sawDone := false
|
|||
|
|
wroteDownstream := false
|
|||
|
|
pendingClientMessages := make([][]byte, 0, 4)
|
|||
|
|
pendingClientMessageBytes := int64(0)
|
|||
|
|
capacityFailoverSuppressedLogged := false
|
|||
|
|
clientDisconnected := false
|
|||
|
|
mappedModel := ""
|
|||
|
|
needModelReplace := false
|
|||
|
|
var mappedModelBytes []byte
|
|||
|
|
if originalModel != "" {
|
|||
|
|
mappedModel = strings.TrimSpace(gjson.GetBytes(body, "model").String())
|
|||
|
|
if mappedModel == "" {
|
|||
|
|
mappedModel = normalizeOpenAIModelForUpstream(account, account.GetMappedModel(originalModel))
|
|||
|
|
}
|
|||
|
|
needModelReplace = mappedModel != "" && mappedModel != originalModel
|
|||
|
|
if needModelReplace {
|
|||
|
|
mappedModelBytes = []byte(mappedModel)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
resultWithUsage := func() *OpenAIForwardResult {
|
|||
|
|
imageCount := imageCounter.Count()
|
|||
|
|
result := &OpenAIForwardResult{
|
|||
|
|
RequestID: responseID,
|
|||
|
|
Usage: usage,
|
|||
|
|
Model: originalModel,
|
|||
|
|
UpstreamModel: mappedModel,
|
|||
|
|
UpstreamResponseModel: responseModelObserver.Model(),
|
|||
|
|
UpstreamResponseModelConflict: responseModelObserver.Conflict(),
|
|||
|
|
ServiceTier: extractOpenAIServiceTierFromBody(body),
|
|||
|
|
ReasoningEffort: ApplyThinkingEnabledFallback(extractOpenAIReasoningEffortFromBody(body, mappedModel, originalModel), body, mappedModel),
|
|||
|
|
Stream: reqStream,
|
|||
|
|
OpenAIWSMode: true,
|
|||
|
|
UpstreamTerminalEvent: upstreamTerminalEvent,
|
|||
|
|
ResponseHeaders: cloneHeader(resp.Header),
|
|||
|
|
Duration: time.Since(turnStart),
|
|||
|
|
FirstTokenMs: firstTokenMs,
|
|||
|
|
}
|
|||
|
|
if replayInput := replayCollector.Items(); len(replayInput) > 0 {
|
|||
|
|
result.wsReplayInput = replayInput
|
|||
|
|
result.wsReplayInputExists = true
|
|||
|
|
}
|
|||
|
|
result.wsAccountFailoverReplayInput = replayCollector.AllItems()
|
|||
|
|
if imageCount > 0 {
|
|||
|
|
result.ImageCount = imageCount
|
|||
|
|
result.ImageSize = imageSizeTier
|
|||
|
|
result.ImageInputSize = imageInputSize
|
|||
|
|
result.ImageOutputSizes = imageCounter.Sizes()
|
|||
|
|
result.BillingModel = imageBillingModel
|
|||
|
|
}
|
|||
|
|
return result
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
maxLineSize := defaultMaxLineSize
|
|||
|
|
if s.cfg != nil && s.cfg.Gateway.MaxLineSize > 0 {
|
|||
|
|
maxLineSize = s.cfg.Gateway.MaxLineSize
|
|||
|
|
}
|
|||
|
|
if hasResponsesClientToolMapping(clientToolMapping) {
|
|||
|
|
resp.Body = newResponsesClientToolStreamBody(resp.Body, clientToolMapping, maxLineSize)
|
|||
|
|
}
|
|||
|
|
scanner := bufio.NewScanner(resp.Body)
|
|||
|
|
scanBuf := getSSEScannerBuf64K()
|
|||
|
|
scanner.Buffer(scanBuf[:0], maxLineSize)
|
|||
|
|
defer putSSEScannerBuf64K(scanBuf)
|
|||
|
|
|
|||
|
|
for scanner.Scan() {
|
|||
|
|
line := scanner.Text()
|
|||
|
|
data, ok := extractOpenAISSEDataLine(line)
|
|||
|
|
if !ok {
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
trimmedData := strings.TrimSpace(data)
|
|||
|
|
if trimmedData == "" {
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
if trimmedData == "[DONE]" {
|
|||
|
|
sawDone = true
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
upstreamMessage := []byte(trimmedData)
|
|||
|
|
if normalized, changed := normalizeCompletedImageGenerationStatus(upstreamMessage); changed {
|
|||
|
|
upstreamMessage = normalized
|
|||
|
|
}
|
|||
|
|
eventType, eventResponseID, _ := parseOpenAIWSEventEnvelope(upstreamMessage)
|
|||
|
|
responseModelObserver.ObserveOpenAI(upstreamMessage, eventType)
|
|||
|
|
if responseID == "" && eventResponseID != "" {
|
|||
|
|
responseID = eventResponseID
|
|||
|
|
}
|
|||
|
|
if eventType != "" {
|
|||
|
|
eventCount++
|
|||
|
|
if firstEventType == "" {
|
|||
|
|
firstEventType = eventType
|
|||
|
|
}
|
|||
|
|
lastEventType = eventType
|
|||
|
|
}
|
|||
|
|
if isOpenAIWSTokenEvent(eventType) {
|
|||
|
|
tokenEventCount++
|
|||
|
|
if firstTokenMs == nil {
|
|||
|
|
ms := int(time.Since(turnStart).Milliseconds())
|
|||
|
|
firstTokenMs = &ms
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if openAIWSEventShouldParseUsage(eventType) {
|
|||
|
|
parseOpenAIWSResponseUsageFromCompletedEvent(upstreamMessage, &usage)
|
|||
|
|
}
|
|||
|
|
imageCounter.AddSSEData(upstreamMessage)
|
|||
|
|
|
|||
|
|
if needModelReplace && len(mappedModelBytes) > 0 && openAIWSEventMayContainModel(eventType) && strings.Contains(trimmedData, mappedModel) {
|
|||
|
|
upstreamMessage = replaceOpenAIWSMessageModel(upstreamMessage, mappedModel, originalModel)
|
|||
|
|
}
|
|||
|
|
if s.toolCorrector != nil && openAIWSEventMayContainToolCalls(eventType) && openAIWSMessageLikelyContainsToolCalls(upstreamMessage) {
|
|||
|
|
if corrected, changed := s.toolCorrector.CorrectToolCallsInSSEBytes(upstreamMessage); changed {
|
|||
|
|
upstreamMessage = corrected
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
replayCollector.AddEvent(eventType, upstreamMessage)
|
|||
|
|
|
|||
|
|
var upstreamEventErr error
|
|||
|
|
if eventType == "error" || eventType == "response.failed" {
|
|||
|
|
errMessage := extractOpenAISSEErrorMessage(upstreamMessage)
|
|||
|
|
if errMessage == "" {
|
|||
|
|
errMessage = "upstream error event"
|
|||
|
|
}
|
|||
|
|
statusCode := openAIStreamFailureStatus(upstreamMessage, errMessage)
|
|||
|
|
shouldFailover := openAIStreamFailedEventShouldFailover(upstreamMessage, errMessage)
|
|||
|
|
if eventType == "error" {
|
|||
|
|
errCodeRaw, errTypeRaw, _ := parseOpenAIWSErrorEventFields(upstreamMessage)
|
|||
|
|
statusCode = openAIWSErrorHTTPStatusFromRaw(errCodeRaw, errTypeRaw)
|
|||
|
|
shouldFailover = s.shouldFailoverOpenAIUpstreamResponse(statusCode, errMessage, upstreamMessage)
|
|||
|
|
}
|
|||
|
|
requestScopedCapacity := isOpenAIUpstreamCapacityShedEvent(upstreamMessage)
|
|||
|
|
if account.Platform == PlatformGrok && eventType == "error" {
|
|||
|
|
// SSE error events do not carry an HTTP status. The local status
|
|||
|
|
// mapper therefore defaults unknown xAI codes (for example
|
|||
|
|
// new_sensitive) to 502; classify the body as a request-scoped
|
|||
|
|
// 403 before applying status-based failover or account state.
|
|||
|
|
if isGrokContentPolicyRejection(http.StatusForbidden, upstreamMessage) {
|
|||
|
|
shouldFailover = false
|
|||
|
|
} else {
|
|||
|
|
shouldFailover = s.shouldFailoverGrokUpstreamError(statusCode, upstreamMessage)
|
|||
|
|
s.handleGrokAccountUpstreamError(ctx, account, statusCode, resp.Header, upstreamMessage)
|
|||
|
|
}
|
|||
|
|
} else if eventType == "error" && shouldFailover && !requestScopedCapacity {
|
|||
|
|
accountStatus := statusCode
|
|||
|
|
if transientStatus := openAIWSPayloadTransientStatus(upstreamMessage); transientStatus != 0 {
|
|||
|
|
accountStatus = transientStatus
|
|||
|
|
}
|
|||
|
|
canonicalModel := canonicalOpenAIAccountSchedulingModel(account, originalModel)
|
|||
|
|
s.handleOpenAIAccountUpstreamError(ctx, account, accountStatus, resp.Header, upstreamMessage, canonicalModel)
|
|||
|
|
}
|
|||
|
|
if !wroteDownstream && shouldFailover && (turn == 1 || statusCode == http.StatusTooManyRequests) {
|
|||
|
|
if account.Platform == PlatformGrok {
|
|||
|
|
return nil, newOpenAIUpstreamFailoverError(statusCode, resp.Header, upstreamMessage, errMessage, false)
|
|||
|
|
}
|
|||
|
|
return nil, s.newOpenAIStreamFailoverError(c, account, true, resp.Header.Get("x-request-id"), upstreamMessage, errMessage, resp.Header)
|
|||
|
|
}
|
|||
|
|
if wroteDownstream && requestScopedCapacity && !capacityFailoverSuppressedLogged {
|
|||
|
|
logOpenAICapacityFailoverSuppressed(ctx, account, "ws_http_bridge", resp.Header.Get("x-request-id"), eventType)
|
|||
|
|
capacityFailoverSuppressedLogged = true
|
|||
|
|
}
|
|||
|
|
if eventType == "error" {
|
|||
|
|
upstreamEventErr = errors.New(errMessage)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 客户端写出副本改写容量降载码：Codex 对 error/response.failed 中的
|
|||
|
|
// server_is_overloaded / slow_down 判致命并终止会话，改写后走客户端内置
|
|||
|
|
// 重试。账号状态与终止事件判定（下方 handleOpenAIWSTerminalTransientFailure）
|
|||
|
|
// 仍使用未改写的 upstreamMessage。
|
|||
|
|
clientMessage := upstreamMessage
|
|||
|
|
if eventType == "error" || eventType == "response.failed" {
|
|||
|
|
if rewritten, changed := sanitizeOpenAICapacityShedErrorCodeForClient(clientMessage); changed {
|
|||
|
|
clientMessage = rewritten
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if !clientDisconnected {
|
|||
|
|
stageBeforeSemanticOutput := turn == 1 && account.Platform == PlatformOpenAI && !wroteDownstream
|
|||
|
|
commitStagedMessages := !stageBeforeSemanticOutput ||
|
|||
|
|
openAIStreamDataStartsClientOutput(string(clientMessage), eventType) ||
|
|||
|
|
isOpenAIWSTerminalEvent(eventType)
|
|||
|
|
if stageBeforeSemanticOutput && !commitStagedMessages {
|
|||
|
|
if pendingClientMessageBytes+int64(len(clientMessage)) > openAIFirstOutputStageMaxBytes {
|
|||
|
|
return nil, s.newOpenAIStreamFailoverError(
|
|||
|
|
c,
|
|||
|
|
account,
|
|||
|
|
true,
|
|||
|
|
resp.Header.Get("x-request-id"),
|
|||
|
|
nil,
|
|||
|
|
"OpenAI WS HTTP bridge first-output staging limit exceeded",
|
|||
|
|
resp.Header,
|
|||
|
|
)
|
|||
|
|
}
|
|||
|
|
pendingClientMessages = append(pendingClientMessages, append([]byte(nil), clientMessage...))
|
|||
|
|
pendingClientMessageBytes += int64(len(clientMessage))
|
|||
|
|
} else {
|
|||
|
|
messages := append(pendingClientMessages, clientMessage)
|
|||
|
|
pendingClientMessages = nil
|
|||
|
|
pendingClientMessageBytes = 0
|
|||
|
|
for _, message := range messages {
|
|||
|
|
if err := writeClientMessage(message); err != nil {
|
|||
|
|
if isOpenAIWSClientDisconnectError(err) {
|
|||
|
|
clientDisconnected = true
|
|||
|
|
closeStatus, closeReason := summarizeOpenAIWSReadCloseError(err)
|
|||
|
|
logOpenAIWSModeInfo(
|
|||
|
|
"ingress_ws_http_bridge_client_disconnected_drain account_id=%d turn=%d close_status=%s close_reason=%s",
|
|||
|
|
account.ID,
|
|||
|
|
turn,
|
|||
|
|
closeStatus,
|
|||
|
|
truncateOpenAIWSLogValue(closeReason, openAIWSHeaderValueMaxLen),
|
|||
|
|
)
|
|||
|
|
break
|
|||
|
|
}
|
|||
|
|
return nil, wrapOpenAIWSIngressTurnError(
|
|||
|
|
"write_client",
|
|||
|
|
fmt.Errorf("write client websocket event: %w", err),
|
|||
|
|
wroteDownstream,
|
|||
|
|
)
|
|||
|
|
}
|
|||
|
|
wroteDownstream = true
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if upstreamEventErr != nil {
|
|||
|
|
return resultWithUsage(), upstreamEventErr
|
|||
|
|
}
|
|||
|
|
if isOpenAIWSTerminalEvent(eventType) {
|
|||
|
|
upstreamTerminalEvent = s.handleOpenAIWSTerminalTransientFailure(ctx, account, canonicalOpenAIAccountSchedulingModel(account, originalModel), resp.Header, upstreamMessage)
|
|||
|
|
terminalEventCount++
|
|||
|
|
firstTokenMsValue := -1
|
|||
|
|
if firstTokenMs != nil {
|
|||
|
|
firstTokenMsValue = *firstTokenMs
|
|||
|
|
}
|
|||
|
|
logOpenAIWSModeInfo(
|
|||
|
|
"ingress_ws_http_bridge_turn_completed account_id=%d turn=%d response_id=%s payload_bytes=%d duration_ms=%d events=%d token_events=%d terminal_events=%d first_event=%s last_event=%s first_token_ms=%d client_disconnected=%v",
|
|||
|
|
account.ID,
|
|||
|
|
turn,
|
|||
|
|
truncateOpenAIWSLogValue(responseID, openAIWSIDValueMaxLen),
|
|||
|
|
payloadBytes,
|
|||
|
|
time.Since(turnStart).Milliseconds(),
|
|||
|
|
eventCount,
|
|||
|
|
tokenEventCount,
|
|||
|
|
terminalEventCount,
|
|||
|
|
truncateOpenAIWSLogValue(firstEventType, openAIWSLogValueMaxLen),
|
|||
|
|
truncateOpenAIWSLogValue(lastEventType, openAIWSLogValueMaxLen),
|
|||
|
|
firstTokenMsValue,
|
|||
|
|
clientDisconnected,
|
|||
|
|
)
|
|||
|
|
return resultWithUsage(), nil
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if err := scanner.Err(); err != nil {
|
|||
|
|
streamErr := fmt.Errorf("read upstream http bridge stream: %w", err)
|
|||
|
|
if turn == 1 && !wroteDownstream {
|
|||
|
|
return nil, s.handleOpenAIUpstreamTransportError(ctx, c, account, streamErr, true)
|
|||
|
|
}
|
|||
|
|
return resultWithUsage(), streamErr
|
|||
|
|
}
|
|||
|
|
terminalErr := errors.New("upstream http bridge stream ended before terminal event")
|
|||
|
|
if sawDone {
|
|||
|
|
terminalErr = errors.New("upstream http bridge stream sent [DONE] before terminal event")
|
|||
|
|
}
|
|||
|
|
if turn == 1 && !wroteDownstream {
|
|||
|
|
return nil, s.handleOpenAIUpstreamTransportError(ctx, c, account, terminalErr, true)
|
|||
|
|
}
|
|||
|
|
return resultWithUsage(), terminalErr
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func resolveGrokWSCacheIdentity(c *gin.Context, account *Account, seedPayload, currentPayload []byte, originalModel string) (string, error) {
|
|||
|
|
body, err := prepareOpenAIWSHTTPBridgeBody(seedPayload)
|
|||
|
|
if err != nil {
|
|||
|
|
return "", err
|
|||
|
|
}
|
|||
|
|
upstreamModel := resolveGrokWSUpstreamModel(account, currentPayload, originalModel)
|
|||
|
|
body, err = patchGrokResponsesBody(body, upstreamModel)
|
|||
|
|
if err != nil {
|
|||
|
|
return "", err
|
|||
|
|
}
|
|||
|
|
return resolveGrokCacheIdentity(c, body, "", upstreamModel), nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func resolveGrokWSUpstreamModel(account *Account, body []byte, originalModel string) string {
|
|||
|
|
upstreamModel := strings.TrimSpace(gjson.GetBytes(body, "model").String())
|
|||
|
|
originalModel = strings.TrimSpace(originalModel)
|
|||
|
|
// Shared ingress has already applied channel and account mappings when the
|
|||
|
|
// body model differs from the client-facing model. Only resolve from the
|
|||
|
|
// original model when the body still carries that original value.
|
|||
|
|
if account != nil && originalModel != "" && (upstreamModel == "" || upstreamModel == originalModel) {
|
|||
|
|
if mappedModel := normalizeOpenAIModelForUpstream(account, account.GetMappedModel(originalModel)); mappedModel != "" {
|
|||
|
|
upstreamModel = mappedModel
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if upstreamModel == "" {
|
|||
|
|
upstreamModel = grokDefaultResponsesModel
|
|||
|
|
}
|
|||
|
|
return upstreamModel
|
|||
|
|
}
|