mirror of
https://github.com/router-for-me/CLIProxyAPI.git
synced 2026-02-03 04:50:52 +08:00
Add openai codex support
This commit is contained in:
@@ -1,208 +0,0 @@
|
||||
// Package claude provides HTTP handlers for Claude API code-related functionality.
|
||||
// This package implements Claude-compatible streaming chat completions with sophisticated
|
||||
// client rotation and quota management systems to ensure high availability and optimal
|
||||
// resource utilization across multiple backend clients. It handles request translation
|
||||
// between Claude API format and the underlying Gemini backend, providing seamless
|
||||
// API compatibility while maintaining robust error handling and connection management.
|
||||
package claude
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"github.com/gin-gonic/gin"
|
||||
"github.com/luispater/CLIProxyAPI/internal/api/handlers"
|
||||
"github.com/luispater/CLIProxyAPI/internal/api/translator/claude/code"
|
||||
"github.com/luispater/CLIProxyAPI/internal/client"
|
||||
log "github.com/sirupsen/logrus"
|
||||
"net/http"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// ClaudeCodeAPIHandlers contains the handlers for Claude API endpoints.
|
||||
// It holds a pool of clients to interact with the backend service.
|
||||
type ClaudeCodeAPIHandlers struct {
|
||||
*handlers.APIHandlers
|
||||
}
|
||||
|
||||
// NewClaudeCodeAPIHandlers creates a new Claude API handlers instance.
|
||||
// It takes an APIHandlers instance as input and returns a ClaudeCodeAPIHandlers.
|
||||
func NewClaudeCodeAPIHandlers(apiHandlers *handlers.APIHandlers) *ClaudeCodeAPIHandlers {
|
||||
return &ClaudeCodeAPIHandlers{
|
||||
APIHandlers: apiHandlers,
|
||||
}
|
||||
}
|
||||
|
||||
// ClaudeMessages handles Claude-compatible streaming chat completions.
|
||||
// This function implements a sophisticated client rotation and quota management system
|
||||
// to ensure high availability and optimal resource utilization across multiple backend clients.
|
||||
func (h *ClaudeCodeAPIHandlers) ClaudeMessages(c *gin.Context) {
|
||||
// Extract raw JSON data from the incoming request
|
||||
rawJSON, err := c.GetRawData()
|
||||
// If data retrieval fails, return a 400 Bad Request error.
|
||||
if err != nil {
|
||||
c.JSON(http.StatusBadRequest, handlers.ErrorResponse{
|
||||
Error: handlers.ErrorDetail{
|
||||
Message: fmt.Sprintf("Invalid request: %v", err),
|
||||
Type: "invalid_request_error",
|
||||
},
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
// Set up Server-Sent Events (SSE) headers for streaming response
|
||||
// These headers are essential for maintaining a persistent connection
|
||||
// and enabling real-time streaming of chat completions
|
||||
c.Header("Content-Type", "text/event-stream")
|
||||
c.Header("Cache-Control", "no-cache")
|
||||
c.Header("Connection", "keep-alive")
|
||||
c.Header("Access-Control-Allow-Origin", "*")
|
||||
|
||||
// Get the http.Flusher interface to manually flush the response.
|
||||
// This is crucial for streaming as it allows immediate sending of data chunks
|
||||
flusher, ok := c.Writer.(http.Flusher)
|
||||
if !ok {
|
||||
c.JSON(http.StatusInternalServerError, handlers.ErrorResponse{
|
||||
Error: handlers.ErrorDetail{
|
||||
Message: "Streaming not supported",
|
||||
Type: "server_error",
|
||||
},
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
// Parse and prepare the Claude request, extracting model name, system instructions,
|
||||
// conversation contents, and available tools from the raw JSON
|
||||
modelName, systemInstruction, contents, tools := code.PrepareClaudeRequest(rawJSON)
|
||||
|
||||
// Map Claude model names to corresponding Gemini models
|
||||
// This allows the proxy to handle Claude API calls using Gemini backend
|
||||
if modelName == "claude-sonnet-4-20250514" {
|
||||
modelName = "gemini-2.5-pro"
|
||||
} else if modelName == "claude-3-5-haiku-20241022" {
|
||||
modelName = "gemini-2.5-flash"
|
||||
}
|
||||
|
||||
// Create a cancellable context for the backend client request
|
||||
// This allows proper cleanup and cancellation of ongoing requests
|
||||
cliCtx, cliCancel := context.WithCancel(context.Background())
|
||||
var cliClient *client.Client
|
||||
defer func() {
|
||||
// Ensure the client's mutex is unlocked on function exit.
|
||||
// This prevents deadlocks and ensures proper resource cleanup
|
||||
if cliClient != nil {
|
||||
cliClient.RequestMutex.Unlock()
|
||||
}
|
||||
}()
|
||||
|
||||
// Main client rotation loop with quota management
|
||||
// This loop implements a sophisticated load balancing and failover mechanism
|
||||
outLoop:
|
||||
for {
|
||||
var errorResponse *client.ErrorMessage
|
||||
cliClient, errorResponse = h.GetClient(modelName)
|
||||
if errorResponse != nil {
|
||||
c.Status(errorResponse.StatusCode)
|
||||
_, _ = fmt.Fprint(c.Writer, errorResponse.Error)
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
return
|
||||
}
|
||||
|
||||
// Determine the authentication method being used by the selected client
|
||||
// This affects how responses are formatted and logged
|
||||
isGlAPIKey := false
|
||||
if glAPIKey := cliClient.GetGenerativeLanguageAPIKey(); glAPIKey != "" {
|
||||
log.Debugf("Request use generative language API Key: %s", glAPIKey)
|
||||
isGlAPIKey = true
|
||||
} else {
|
||||
log.Debugf("Request use account: %s, project id: %s", cliClient.GetEmail(), cliClient.GetProjectID())
|
||||
}
|
||||
// Initiate streaming communication with the backend client
|
||||
// This returns two channels: one for response chunks and one for errors
|
||||
|
||||
includeThoughts := false
|
||||
if userAgent, hasKey := c.Request.Header["User-Agent"]; hasKey {
|
||||
includeThoughts = !strings.Contains(userAgent[0], "claude-cli")
|
||||
}
|
||||
|
||||
respChan, errChan := cliClient.SendMessageStream(cliCtx, rawJSON, modelName, systemInstruction, contents, tools, includeThoughts)
|
||||
|
||||
// Track response state for proper Claude format conversion
|
||||
hasFirstResponse := false
|
||||
responseType := 0
|
||||
responseIndex := 0
|
||||
|
||||
// Main streaming loop - handles multiple concurrent events using Go channels
|
||||
// This select statement manages four different types of events simultaneously
|
||||
for {
|
||||
select {
|
||||
// Case 1: Handle client disconnection
|
||||
// Detects when the HTTP client has disconnected and cleans up resources
|
||||
case <-c.Request.Context().Done():
|
||||
if c.Request.Context().Err().Error() == "context canceled" {
|
||||
log.Debugf("Client disconnected: %v", c.Request.Context().Err())
|
||||
cliCancel() // Cancel the backend request to prevent resource leaks
|
||||
return
|
||||
}
|
||||
|
||||
// Case 2: Process incoming response chunks from the backend
|
||||
// This handles the actual streaming data from the AI model
|
||||
case chunk, okStream := <-respChan:
|
||||
if !okStream {
|
||||
// Stream has ended - send the final message_stop event
|
||||
// This follows the Claude API specification for stream termination
|
||||
_, _ = c.Writer.Write([]byte(`event: message_stop`))
|
||||
_, _ = c.Writer.Write([]byte("\n"))
|
||||
_, _ = c.Writer.Write([]byte(`data: {"type":"message_stop"}`))
|
||||
_, _ = c.Writer.Write([]byte("\n\n\n"))
|
||||
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
return
|
||||
}
|
||||
// Convert the backend response to Claude-compatible format
|
||||
// This translation layer ensures API compatibility
|
||||
claudeFormat := code.ConvertCliToClaude(chunk, isGlAPIKey, hasFirstResponse, &responseType, &responseIndex)
|
||||
if claudeFormat != "" {
|
||||
_, _ = c.Writer.Write([]byte(claudeFormat))
|
||||
flusher.Flush() // Immediately send the chunk to the client
|
||||
}
|
||||
hasFirstResponse = true
|
||||
|
||||
// Case 3: Handle errors from the backend
|
||||
// This manages various error conditions and implements retry logic
|
||||
case errInfo, okError := <-errChan:
|
||||
if okError {
|
||||
// Special handling for quota exceeded errors
|
||||
// If configured, attempt to switch to a different project/client
|
||||
if errInfo.StatusCode == 429 && h.Cfg.QuotaExceeded.SwitchProject {
|
||||
continue outLoop // Restart the client selection process
|
||||
} else {
|
||||
// Forward other errors directly to the client
|
||||
c.Status(errInfo.StatusCode)
|
||||
_, _ = fmt.Fprint(c.Writer, errInfo.Error.Error())
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Case 4: Send periodic keep-alive signals
|
||||
// Prevents connection timeouts during long-running requests
|
||||
case <-time.After(500 * time.Millisecond):
|
||||
if hasFirstResponse {
|
||||
// Send a ping event to maintain the connection
|
||||
// This is especially important for slow AI model responses
|
||||
output := "event: ping\n"
|
||||
output = output + `data: {"type": "ping"}`
|
||||
output = output + "\n\n\n"
|
||||
_, _ = c.Writer.Write([]byte(output))
|
||||
|
||||
flusher.Flush()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
382
internal/api/handlers/claude/code_handlers.go
Normal file
382
internal/api/handlers/claude/code_handlers.go
Normal file
@@ -0,0 +1,382 @@
|
||||
// Package claude provides HTTP handlers for Claude API code-related functionality.
|
||||
// This package implements Claude-compatible streaming chat completions with sophisticated
|
||||
// client rotation and quota management systems to ensure high availability and optimal
|
||||
// resource utilization across multiple backend clients. It handles request translation
|
||||
// between Claude API format and the underlying Gemini backend, providing seamless
|
||||
// API compatibility while maintaining robust error handling and connection management.
|
||||
package claude
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/gin-gonic/gin"
|
||||
"github.com/luispater/CLIProxyAPI/internal/api/handlers"
|
||||
"github.com/luispater/CLIProxyAPI/internal/client"
|
||||
translatorClaudeCodeToCodex "github.com/luispater/CLIProxyAPI/internal/translator/codex/claude/code"
|
||||
translatorClaudeCodeToGeminiCli "github.com/luispater/CLIProxyAPI/internal/translator/gemini-cli/claude/code"
|
||||
"github.com/luispater/CLIProxyAPI/internal/util"
|
||||
log "github.com/sirupsen/logrus"
|
||||
"github.com/tidwall/gjson"
|
||||
"github.com/tidwall/sjson"
|
||||
)
|
||||
|
||||
// ClaudeCodeAPIHandlers contains the handlers for Claude API endpoints.
|
||||
// It holds a pool of clients to interact with the backend service.
|
||||
type ClaudeCodeAPIHandlers struct {
|
||||
*handlers.APIHandlers
|
||||
}
|
||||
|
||||
// NewClaudeCodeAPIHandlers creates a new Claude API handlers instance.
|
||||
// It takes an APIHandlers instance as input and returns a ClaudeCodeAPIHandlers.
|
||||
func NewClaudeCodeAPIHandlers(apiHandlers *handlers.APIHandlers) *ClaudeCodeAPIHandlers {
|
||||
return &ClaudeCodeAPIHandlers{
|
||||
APIHandlers: apiHandlers,
|
||||
}
|
||||
}
|
||||
|
||||
// ClaudeMessages handles Claude-compatible streaming chat completions.
|
||||
// This function implements a sophisticated client rotation and quota management system
|
||||
// to ensure high availability and optimal resource utilization across multiple backend clients.
|
||||
func (h *ClaudeCodeAPIHandlers) ClaudeMessages(c *gin.Context) {
|
||||
// Extract raw JSON data from the incoming request
|
||||
rawJSON, err := c.GetRawData()
|
||||
// If data retrieval fails, return a 400 Bad Request error.
|
||||
if err != nil {
|
||||
c.JSON(http.StatusBadRequest, handlers.ErrorResponse{
|
||||
Error: handlers.ErrorDetail{
|
||||
Message: fmt.Sprintf("Invalid request: %v", err),
|
||||
Type: "invalid_request_error",
|
||||
},
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
// h.handleGeminiStreamingResponse(c, rawJSON)
|
||||
// h.handleCodexStreamingResponse(c, rawJSON)
|
||||
modelName := gjson.GetBytes(rawJSON, "model")
|
||||
provider := util.GetProviderName(modelName.String())
|
||||
if provider == "gemini" {
|
||||
h.handleGeminiStreamingResponse(c, rawJSON)
|
||||
} else if provider == "gpt" {
|
||||
h.handleCodexStreamingResponse(c, rawJSON)
|
||||
} else {
|
||||
h.handleGeminiStreamingResponse(c, rawJSON)
|
||||
}
|
||||
}
|
||||
|
||||
// handleGeminiStreamingResponse streams Claude-compatible responses backed by Gemini.
|
||||
// It sets up SSE, selects a backend client with rotation/quota logic,
|
||||
// forwards chunks, and translates them to Claude CLI format.
|
||||
func (h *ClaudeCodeAPIHandlers) handleGeminiStreamingResponse(c *gin.Context, rawJSON []byte) {
|
||||
// Set up Server-Sent Events (SSE) headers for streaming response
|
||||
// These headers are essential for maintaining a persistent connection
|
||||
// and enabling real-time streaming of chat completions
|
||||
c.Header("Content-Type", "text/event-stream")
|
||||
c.Header("Cache-Control", "no-cache")
|
||||
c.Header("Connection", "keep-alive")
|
||||
c.Header("Access-Control-Allow-Origin", "*")
|
||||
|
||||
// Get the http.Flusher interface to manually flush the response.
|
||||
// This is crucial for streaming as it allows immediate sending of data chunks
|
||||
flusher, ok := c.Writer.(http.Flusher)
|
||||
if !ok {
|
||||
c.JSON(http.StatusInternalServerError, handlers.ErrorResponse{
|
||||
Error: handlers.ErrorDetail{
|
||||
Message: "Streaming not supported",
|
||||
Type: "server_error",
|
||||
},
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
// Parse and prepare the Claude request, extracting model name, system instructions,
|
||||
// conversation contents, and available tools from the raw JSON
|
||||
modelName, systemInstruction, contents, tools := translatorClaudeCodeToGeminiCli.ConvertClaudeCodeRequestToCli(rawJSON)
|
||||
|
||||
// Map Claude model names to corresponding Gemini models
|
||||
// This allows the proxy to handle Claude API calls using Gemini backend
|
||||
if modelName == "claude-sonnet-4-20250514" {
|
||||
modelName = "gemini-2.5-pro"
|
||||
} else if modelName == "claude-3-5-haiku-20241022" {
|
||||
modelName = "gemini-2.5-flash"
|
||||
}
|
||||
|
||||
// Create a cancellable context for the backend client request
|
||||
// This allows proper cleanup and cancellation of ongoing requests
|
||||
cliCtx, cliCancel := context.WithCancel(context.Background())
|
||||
var cliClient client.Client
|
||||
cliClient = client.NewGeminiClient(nil, nil, nil)
|
||||
defer func() {
|
||||
// Ensure the client's mutex is unlocked on function exit.
|
||||
// This prevents deadlocks and ensures proper resource cleanup
|
||||
if cliClient != nil {
|
||||
cliClient.GetRequestMutex().Unlock()
|
||||
}
|
||||
}()
|
||||
|
||||
// Main client rotation loop with quota management
|
||||
// This loop implements a sophisticated load balancing and failover mechanism
|
||||
outLoop:
|
||||
for {
|
||||
var errorResponse *client.ErrorMessage
|
||||
cliClient, errorResponse = h.GetClient(modelName)
|
||||
if errorResponse != nil {
|
||||
c.Status(errorResponse.StatusCode)
|
||||
_, _ = fmt.Fprint(c.Writer, errorResponse.Error)
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
return
|
||||
}
|
||||
|
||||
// Determine the authentication method being used by the selected client
|
||||
// This affects how responses are formatted and logged
|
||||
isGlAPIKey := false
|
||||
if glAPIKey := cliClient.(*client.GeminiClient).GetGenerativeLanguageAPIKey(); glAPIKey != "" {
|
||||
log.Debugf("Request use gemini generative language API Key: %s", glAPIKey)
|
||||
isGlAPIKey = true
|
||||
} else {
|
||||
log.Debugf("Request use gemini account: %s, project id: %s", cliClient.GetEmail(), cliClient.(*client.GeminiClient).GetProjectID())
|
||||
}
|
||||
// Initiate streaming communication with the backend client
|
||||
// This returns two channels: one for response chunks and one for errors
|
||||
|
||||
includeThoughts := false
|
||||
if userAgent, hasKey := c.Request.Header["User-Agent"]; hasKey {
|
||||
includeThoughts = !strings.Contains(userAgent[0], "claude-cli")
|
||||
}
|
||||
|
||||
respChan, errChan := cliClient.SendMessageStream(cliCtx, rawJSON, modelName, systemInstruction, contents, tools, includeThoughts)
|
||||
|
||||
// Track response state for proper Claude format conversion
|
||||
hasFirstResponse := false
|
||||
responseType := 0
|
||||
responseIndex := 0
|
||||
|
||||
// Main streaming loop - handles multiple concurrent events using Go channels
|
||||
// This select statement manages four different types of events simultaneously
|
||||
for {
|
||||
select {
|
||||
// Case 1: Handle client disconnection
|
||||
// Detects when the HTTP client has disconnected and cleans up resources
|
||||
case <-c.Request.Context().Done():
|
||||
if c.Request.Context().Err().Error() == "context canceled" {
|
||||
log.Debugf("GeminiClient disconnected: %v", c.Request.Context().Err())
|
||||
cliCancel() // Cancel the backend request to prevent resource leaks
|
||||
return
|
||||
}
|
||||
|
||||
// Case 2: Process incoming response chunks from the backend
|
||||
// This handles the actual streaming data from the AI model
|
||||
case chunk, okStream := <-respChan:
|
||||
if !okStream {
|
||||
// Stream has ended - send the final message_stop event
|
||||
// This follows the Claude API specification for stream termination
|
||||
_, _ = c.Writer.Write([]byte(`event: message_stop`))
|
||||
_, _ = c.Writer.Write([]byte("\n"))
|
||||
_, _ = c.Writer.Write([]byte(`data: {"type":"message_stop"}`))
|
||||
_, _ = c.Writer.Write([]byte("\n\n\n"))
|
||||
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
return
|
||||
}
|
||||
// Convert the backend response to Claude-compatible format
|
||||
// This translation layer ensures API compatibility
|
||||
claudeFormat := translatorClaudeCodeToGeminiCli.ConvertCliResponseToClaudeCode(chunk, isGlAPIKey, hasFirstResponse, &responseType, &responseIndex)
|
||||
if claudeFormat != "" {
|
||||
_, _ = c.Writer.Write([]byte(claudeFormat))
|
||||
flusher.Flush() // Immediately send the chunk to the client
|
||||
}
|
||||
hasFirstResponse = true
|
||||
|
||||
// Case 3: Handle errors from the backend
|
||||
// This manages various error conditions and implements retry logic
|
||||
case errInfo, okError := <-errChan:
|
||||
if okError {
|
||||
// Special handling for quota exceeded errors
|
||||
// If configured, attempt to switch to a different project/client
|
||||
if errInfo.StatusCode == 429 && h.Cfg.QuotaExceeded.SwitchProject {
|
||||
continue outLoop // Restart the client selection process
|
||||
} else {
|
||||
// Forward other errors directly to the client
|
||||
c.Status(errInfo.StatusCode)
|
||||
_, _ = fmt.Fprint(c.Writer, errInfo.Error.Error())
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Case 4: Send periodic keep-alive signals
|
||||
// Prevents connection timeouts during long-running requests
|
||||
case <-time.After(500 * time.Millisecond):
|
||||
if hasFirstResponse {
|
||||
// Send a ping event to maintain the connection
|
||||
// This is especially important for slow AI model responses
|
||||
output := "event: ping\n"
|
||||
output = output + `data: {"type": "ping"}`
|
||||
output = output + "\n\n\n"
|
||||
_, _ = c.Writer.Write([]byte(output))
|
||||
|
||||
flusher.Flush()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// handleCodexStreamingResponse streams Claude-compatible responses backed by OpenAI.
|
||||
// It converts the Claude request into Codex/OpenAI responses format, establishes SSE,
|
||||
// and translates streaming chunks back into Claude CLI events.
|
||||
func (h *ClaudeCodeAPIHandlers) handleCodexStreamingResponse(c *gin.Context, rawJSON []byte) {
|
||||
// Set up Server-Sent Events (SSE) headers for streaming response
|
||||
// These headers are essential for maintaining a persistent connection
|
||||
// and enabling real-time streaming of chat completions
|
||||
c.Header("Content-Type", "text/event-stream")
|
||||
c.Header("Cache-Control", "no-cache")
|
||||
c.Header("Connection", "keep-alive")
|
||||
c.Header("Access-Control-Allow-Origin", "*")
|
||||
|
||||
// Get the http.Flusher interface to manually flush the response.
|
||||
// This is crucial for streaming as it allows immediate sending of data chunks
|
||||
flusher, ok := c.Writer.(http.Flusher)
|
||||
if !ok {
|
||||
c.JSON(http.StatusInternalServerError, handlers.ErrorResponse{
|
||||
Error: handlers.ErrorDetail{
|
||||
Message: "Streaming not supported",
|
||||
Type: "server_error",
|
||||
},
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
// Parse and prepare the Claude request, extracting model name, system instructions,
|
||||
// conversation contents, and available tools from the raw JSON
|
||||
newRequestJSON := translatorClaudeCodeToCodex.ConvertClaudeCodeRequestToCodex(rawJSON)
|
||||
modelName := gjson.GetBytes(rawJSON, "model").String()
|
||||
// Map Claude model names to corresponding Gemini models
|
||||
// This allows the proxy to handle Claude API calls using Gemini backend
|
||||
if modelName == "claude-sonnet-4-20250514" {
|
||||
modelName = "gpt-5"
|
||||
} else if modelName == "claude-3-5-haiku-20241022" {
|
||||
modelName = "gpt-5"
|
||||
}
|
||||
newRequestJSON, _ = sjson.Set(newRequestJSON, "model", modelName)
|
||||
// log.Debugf(string(rawJSON))
|
||||
// log.Debugf(newRequestJSON)
|
||||
// return
|
||||
// Create a cancellable context for the backend client request
|
||||
// This allows proper cleanup and cancellation of ongoing requests
|
||||
cliCtx, cliCancel := context.WithCancel(context.Background())
|
||||
var cliClient client.Client
|
||||
defer func() {
|
||||
// Ensure the client's mutex is unlocked on function exit.
|
||||
// This prevents deadlocks and ensures proper resource cleanup
|
||||
if cliClient != nil {
|
||||
cliClient.GetRequestMutex().Unlock()
|
||||
}
|
||||
}()
|
||||
|
||||
// Main client rotation loop with quota management
|
||||
// This loop implements a sophisticated load balancing and failover mechanism
|
||||
outLoop:
|
||||
for {
|
||||
var errorResponse *client.ErrorMessage
|
||||
cliClient, errorResponse = h.GetClient(modelName)
|
||||
if errorResponse != nil {
|
||||
c.Status(errorResponse.StatusCode)
|
||||
_, _ = fmt.Fprint(c.Writer, errorResponse.Error)
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
return
|
||||
}
|
||||
|
||||
log.Debugf("Request use codex account: %s", cliClient.GetEmail())
|
||||
|
||||
// Initiate streaming communication with the backend client
|
||||
// This returns two channels: one for response chunks and one for errors
|
||||
respChan, errChan := cliClient.SendRawMessageStream(cliCtx, []byte(newRequestJSON), "")
|
||||
|
||||
// Track response state for proper Claude format conversion
|
||||
hasFirstResponse := false
|
||||
hasToolCall := false
|
||||
|
||||
// Main streaming loop - handles multiple concurrent events using Go channels
|
||||
// This select statement manages four different types of events simultaneously
|
||||
for {
|
||||
select {
|
||||
// Case 1: Handle client disconnection
|
||||
// Detects when the HTTP client has disconnected and cleans up resources
|
||||
case <-c.Request.Context().Done():
|
||||
if c.Request.Context().Err().Error() == "context canceled" {
|
||||
log.Debugf("CodexClient disconnected: %v", c.Request.Context().Err())
|
||||
cliCancel() // Cancel the backend request to prevent resource leaks
|
||||
return
|
||||
}
|
||||
|
||||
// Case 2: Process incoming response chunks from the backend
|
||||
// This handles the actual streaming data from the AI model
|
||||
case chunk, okStream := <-respChan:
|
||||
if !okStream {
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
return
|
||||
}
|
||||
// Convert the backend response to Claude-compatible format
|
||||
// This translation layer ensures API compatibility
|
||||
if bytes.HasPrefix(chunk, []byte("data: ")) {
|
||||
jsonData := chunk[6:]
|
||||
var claudeFormat string
|
||||
claudeFormat, hasToolCall = translatorClaudeCodeToCodex.ConvertCodexResponseToClaude(jsonData, hasToolCall)
|
||||
// log.Debugf("claudeFormat: %s", claudeFormat)
|
||||
if claudeFormat != "" {
|
||||
_, _ = c.Writer.Write([]byte(claudeFormat))
|
||||
_, _ = c.Writer.Write([]byte("\n"))
|
||||
}
|
||||
flusher.Flush() // Immediately send the chunk to the client
|
||||
hasFirstResponse = true
|
||||
} else {
|
||||
// log.Debugf("chunk: %s", string(chunk))
|
||||
}
|
||||
// Case 3: Handle errors from the backend
|
||||
// This manages various error conditions and implements retry logic
|
||||
case errInfo, okError := <-errChan:
|
||||
if okError {
|
||||
// log.Debugf("Code: %d, Error: %v", errInfo.StatusCode, errInfo.Error)
|
||||
// Special handling for quota exceeded errors
|
||||
// If configured, attempt to switch to a different project/client
|
||||
if errInfo.StatusCode == 429 && h.Cfg.QuotaExceeded.SwitchProject {
|
||||
log.Debugf("quota exceeded, switch client")
|
||||
continue outLoop // Restart the client selection process
|
||||
} else {
|
||||
// Forward other errors directly to the client
|
||||
c.Status(errInfo.StatusCode)
|
||||
_, _ = fmt.Fprint(c.Writer, errInfo.Error.Error())
|
||||
flusher.Flush()
|
||||
cliCancel()
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Case 4: Send periodic keep-alive signals
|
||||
// Prevents connection timeouts during long-running requests
|
||||
case <-time.After(3000 * time.Millisecond):
|
||||
if hasFirstResponse {
|
||||
// Send a ping event to maintain the connection
|
||||
// This is especially important for slow AI model responses
|
||||
output := "event: ping\n"
|
||||
output = output + `data: {"type": "ping"}`
|
||||
output = output + "\n\n"
|
||||
_, _ = c.Writer.Write([]byte(output))
|
||||
|
||||
flusher.Flush()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user