fix: replicate mistral prompt

replicate.go

@@ -19,6 +19,7 @@ var replicate_model_url_template = "https://api.replicate.com/v1/models/%s/predi
 func processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record *Record, shouldResponse bool) error {
 	err := _processReplicateRequest(c, upstream, record, shouldResponse)
 	if shouldResponse {
+		sendCORSHeaders(c)
 		if err != nil {
 			c.AbortWithError(502, err)
 		}
@@ -85,7 +86,7 @@ func _processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record
 			Top_k:            50,
 			FrequencyPenalty: 0.0,
 			PresencePenalty:  0.0,
-			PromptTemplate:   "<s>[INST] {prompt} [/INST] ",
+			PromptTemplate:   "{prompt}",
 		},
 	}
 
@@ -96,9 +97,58 @@ func _processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record
 	outRequest.Input.PresencePenalty = inRequest.PresencePenalty
 
 	// render prompt
+	systemMessage := ""
+	userMessage := ""
+	assistantMessage := ""
 	for _, message := range inRequest.Messages {
-		outRequest.Input.Prompt += message.Content + "\n"
+		if message.Role == "system" {
+			if systemMessage != "" {
+				systemMessage += "\n"
+			}
+			systemMessage += message.Content
+			continue
+		}
+		if message.Role == "user" {
+			if userMessage != "" {
+				userMessage += "\n"
+			}
+			userMessage += message.Content
+			if systemMessage != "" {
+				userMessage = systemMessage + "\n" + userMessage
+				systemMessage = ""
+			}
+			continue
+		}
+		if message.Role == "assistant" {
+			if assistantMessage != "" {
+				assistantMessage += "\n"
+			}
+			assistantMessage += message.Content
+
+			if outRequest.Input.Prompt != "" {
+				outRequest.Input.Prompt += "\n"
+			}
+			if userMessage != "" {
+				outRequest.Input.Prompt += fmt.Sprintf("<s> [INST] %s [/INST] %s </s>", userMessage, assistantMessage)
+			} else {
+				outRequest.Input.Prompt += fmt.Sprintf("<s> %s </s>", assistantMessage)
+			}
+			userMessage = ""
+			assistantMessage = ""
+		}
+		// unknown role
+		log.Println("[processReplicateRequest]: Warning: unknown role", message.Role)
 	}
+	// final user message
+	if userMessage != "" {
+		outRequest.Input.Prompt += fmt.Sprintf("<s> [INST] %s [/INST] ", userMessage)
+		userMessage = ""
+	}
+	// final assistant message
+	if assistantMessage != "" {
+		outRequest.Input.Prompt += fmt.Sprintf("<s> %s </s>", assistantMessage)
+	}
+	log.Println("[processReplicateRequest]: outRequest.Input.Prompt:", outRequest.Input.Prompt)
 
 	// send request
 	outBody, err := json.Marshal(outRequest)
@@ -189,14 +239,10 @@ func _processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record
 
 			// parse chunk to ReplicateModelResultChunk object
 			chunkObj := &ReplicateModelResultChunk{}
-			log.Println("[processReplicateRequest]: chunk:", chunk)
 			lines := strings.Split(chunk, "\n")
-			log.Println("[processReplicateRequest]: lines:", lines)
 			// first line is event
 			chunkObj.Event = strings.TrimSpace(lines[0])
 			chunkObj.Event = strings.TrimPrefix(chunkObj.Event, "event: ")
-			fmt.Printf("[processReplicateRequest]: chunkObj.Event: '%s'\n", chunkObj.Event)
-			fmt.Printf("Length: %d\n", len(chunkObj.Event))
 			// second line is id
 			chunkObj.ID = strings.TrimSpace(lines[1])
 			chunkObj.ID = strings.TrimPrefix(chunkObj.ID, "id: ")
@@ -212,14 +258,16 @@ func _processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record
 				break
 			}
 
+			sendCORSHeaders(c)
+
 			// create OpenAI response chunk
-			c.SSEvent("", &OpenAIChatResponse{
-				ID:    chunkObj.Event,
+			c.SSEvent("", &OpenAIChatResponseChunk{
+				ID:    "",
 				Model: outResponse.Model,
-				Choices: []OpenAIChatResponseChoice{
+				Choices: []OpenAIChatResponseChunkChoice{
 					{
 						Index: indexCount,
-						Message: OpenAIChatMessage{
+						Delta: OpenAIChatMessage{
 							Role:    "assistant",
 							Content: chunkObj.Data,
 						},
@@ -229,13 +277,14 @@ func _processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record
 			c.Writer.Flush()
 			indexCount += 1
 		}
-		c.SSEvent("", &OpenAIChatResponse{
+		sendCORSHeaders(c)
+		c.SSEvent("", &OpenAIChatResponseChunk{
 			ID:    "",
 			Model: outResponse.Model,
-			Choices: []OpenAIChatResponseChoice{
+			Choices: []OpenAIChatResponseChunkChoice{
 				{
 					Index: indexCount,
-					Message: OpenAIChatMessage{
+					Delta: OpenAIChatMessage{
 						Role:    "assistant",
 						Content: "",
 					},
@@ -273,8 +322,6 @@ func _processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record
 				return errors.New("[processReplicateRequest]: failed to read response body " + err.Error())
 			}
 
-			log.Println("[processReplicateRequest]: resultBody:", string(resultBody))
-
 			// parse reponse body
 			result = &ReplicateModelResultGet{}
 			err = json.Unmarshal(resultBody, result)
@@ -282,7 +329,6 @@ func _processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record
 				c.Request.Body = io.NopCloser(bytes.NewBuffer(inBody))
 				return errors.New("[processReplicateRequest]: failed to parse response body " + err.Error())
 			}
-			log.Println("[processReplicateRequest]: result:", result)
 
 			if result.Status == "processing" || result.Status == "starting" {
 				time.Sleep(3 * time.Second)
@@ -315,6 +361,7 @@ func _processReplicateRequest(c *gin.Context, upstream *OPENAI_UPSTREAM, record
 		record.Status = 200
 
 		// gin return
+		sendCORSHeaders(c)
 		c.JSON(200, openAIResult)
 
 	}

structure.go

@@ -62,11 +62,11 @@ func readConfig(filepath string) Config {
 			log.Fatalf("Can't parse upstream endpoint URL '%s': %s", upstream.Endpoint, err)
 		}
 		config.Upstreams[i].URL = endpoint
-		if upstream.Type == "" {
-			upstream.Type = "openai"
+		if config.Upstreams[i].Type == "" {
+			config.Upstreams[i].Type = "openai"
 		}
-		if (upstream.Type != "openai") && (upstream.Type != "replicate") {
-			log.Fatalf("Unsupported upstream type '%s'", upstream.Type)
+		if (config.Upstreams[i].Type != "openai") && (config.Upstreams[i].Type != "replicate") {
+			log.Fatalf("Unsupported upstream type '%s'", config.Upstreams[i].Type)
 		}
 	}
 
@@ -85,7 +85,7 @@ type OpenAIChatRequest struct {
 
 type OpenAIChatRequestMessage struct {
 	Content string `json:"content"`
-	User    string `json:"user"`
+	Role    string `json:"role"`
 }
 
 type ReplicateModelRequest struct {
@@ -176,5 +176,5 @@ type OpenAIChatResponseChunk struct {
 type OpenAIChatResponseChunkChoice struct {
 	Index        int64             `json:"index"`
 	Delta        OpenAIChatMessage `json:"delta"`
-	FinishReason *string           `json:"finish_reason"`
+	FinishReason string            `json:"finish_reason"`
 }