Merge pull request #978 from cyhasuka/main

Feat: Support Non-streaming chat in Ollama backend

ktransformers/server/api/ollama/completions.py

@@ -49,7 +49,10 @@ class OllamaGenerationStreamResponse(BaseModel):
     done: bool = Field(...)
 
 class OllamaGenerationResponse(BaseModel):
-    pass
+    model: str
+    created_at: str
+    response: str
+    done: bool
 
 @router.post("/generate", tags=['ollama'])
 async def generate(request: Request, input: OllamaGenerateCompletionRequest):
@@ -81,7 +84,20 @@ async def generate(request: Request, input: OllamaGenerateCompletionRequest):
             yield d.model_dump_json() + '\n'
         return check_link_response(request, inner())
     else:
-        raise NotImplementedError
+        complete_response = ""
+        async for res in interface.inference(input.prompt, id):
+            if isinstance(res, RawUsage):
+                raw_usage = res
+            else: 
+                token, finish_reason = res
+                complete_response += token
+        response = OllamaGenerationResponse(
+            model=config.model_name,
+            created_at=str(datetime.now()),
+            response=complete_response,
+            done=True
+        )
+        return response
     
 # https://github.com/ollama/ollama/blob/main/docs/api.md#generate-a-chat-completion
 class OllamaChatCompletionMessage(BaseModel):
@@ -106,10 +122,17 @@ class OllamaChatCompletionStreamResponse(BaseModel):
     eval_count: Optional[int] = Field(None, description="Number of tokens generated")
     eval_duration: Optional[int] = Field(None, description="Time spent generating response in nanoseconds")
 
-
-
 class OllamaChatCompletionResponse(BaseModel):
-    pass
+    model: str
+    created_at: str
+    message: dict
+    done: bool
+    total_duration: Optional[int] = Field(None, description="Total time spent in nanoseconds")
+    load_duration: Optional[int] = Field(None, description="Time spent loading model in nanoseconds")
+    prompt_eval_count: Optional[int] = Field(None, description="Number of tokens in prompt")
+    prompt_eval_duration: Optional[int] = Field(None, description="Time spent evaluating prompt in nanoseconds")
+    eval_count: Optional[int] = Field(None, description="Number of tokens generated")
+    eval_duration: Optional[int] = Field(None, description="Time spent generating response in nanoseconds")
 
 @router.post("/chat", tags=['ollama'])
 async def chat(request: Request, input: OllamaChatCompletionRequest):
@@ -164,7 +187,38 @@ async def chat(request: Request, input: OllamaChatCompletionRequest):
             yield d.model_dump_json() + '\n'
         return check_link_response(request, inner())
     else:
-        raise NotImplementedError("Non-streaming chat is not implemented.")
+        start_time = time()
+        complete_response = ""
+        eval_count = 0 
+
+        async for res in interface.inference(prompt, id):
+            if isinstance(res, RawUsage):
+                raw_usage = res
+            else: 
+                token, finish_reason = res
+                complete_response += token
+            eval_count += 1
+
+        end_time = time()
+        total_duration = int((end_time - start_time) * 1_000_000_000)
+        prompt_eval_count = len(prompt.split())
+        eval_duration = total_duration
+        prompt_eval_duration = 0
+        load_duration = 0
+
+        response = OllamaChatCompletionResponse(
+            model=config.model_name,
+            created_at=str(datetime.now()),
+            message={"role": "assistant", "content": complete_response},
+            done=True,
+            total_duration=total_duration,
+            load_duration=load_duration,
+            prompt_eval_count=prompt_eval_count,
+            prompt_eval_duration=prompt_eval_duration,
+            eval_count=eval_count,
+            eval_duration=eval_duration
+        )
+        return response
     
 # https://github.com/ollama/ollama/blob/main/docs/api.md#list-local-models
 class OllamaModel(BaseModel):