修复glm-4 无法流式输出的bug

server/model_workers/zhipu.py

@@ -11,7 +11,7 @@
 from typing import List, Dict, Iterator, Literal, Any
 import jwt
 import time
-
+import json
 
 @contextmanager
 def connect_sse(client: httpx.Client, method: str, url: str, **kwargs: Any):
@@ -68,23 +68,26 @@ def do_chat(self, params: ApiChatParams) -> Iterator[Dict]:
             "messages": params.messages,
             "max_tokens": params.max_tokens,
             "temperature": params.temperature,
-            "stream": False
+            "stream": True
         }
 
         url = "https://open.bigmodel.cn/api/paas/v4/chat/completions"
-        with httpx.Client(headers=headers) as client:
-            response = client.post(url, json=data)
-            response.raise_for_status()
-            chunk = response.json()
-            print(chunk)
-            yield {"error_code": 0, "text": chunk["choices"][0]["message"]["content"]}
-
-            # with connect_sse(client, "POST", url, json=data) as event_source:
-            #     for sse in event_source.iter_sse():
-            #         chunk = json.loads(sse.data)
-            #         if len(chunk["choices"]) != 0:
-            #             text += chunk["choices"][0]["delta"]["content"]
-            #             yield {"error_code": 0, "text": text}
+        text = ""
+        response = requests.post(url, headers=headers, json=data, stream=True)
+        for chunk in response.iter_lines():
+            if  chunk:
+                if chunk.startswith(b'data:'):
+                    json_str = chunk.decode('utf-8')[6:]
+                    try:
+                        data = json.loads(json_str)
+                        if 'finish_reason' in data and data.get('finish_reason') =="stop":
+                            break
+                        else:
+                            msg = data['choices'][0]['delta']['content']
+                            text += msg
+                            yield {"error_code": 0, "text": text}
+                    except json.JSONDecodeError as e:
+                        pass
 
 
     def do_embeddings(self, params: ApiEmbeddingsParams) -> Dict: