将flask改成fastapi

sdk/python/ragflow_sdk/modules/session.py

@@ -0,0 +1,103 @@
+#
+#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+import json
+
+from .base import Base
+
+
+class Session(Base):
+    def __init__(self, rag, res_dict):
+        self.id = None
+        self.name = "New session"
+        self.messages = [{"role": "assistant", "content": "Hi! I am your assistant, can I help you?"}]
+        for key, value in res_dict.items():
+            if key == "chat_id" and value is not None:
+                self.chat_id = None
+                self.__session_type = "chat"
+            if key == "agent_id" and value is not None:
+                self.agent_id = None
+                self.__session_type = "agent"
+        super().__init__(rag, res_dict)
+
+    def ask(self, question="", stream=True, **kwargs):
+        if self.__session_type == "agent":
+            res = self._ask_agent(question, stream)
+        elif self.__session_type == "chat":
+            res = self._ask_chat(question, stream, **kwargs)
+
+        if stream:
+            for line in res.iter_lines():
+                line = line.decode("utf-8")
+                if line.startswith("{"):
+                    json_data = json.loads(line)
+                    raise Exception(json_data["message"])
+                if not line.startswith("data:"):
+                    continue
+                json_data = json.loads(line[5:])
+                if json_data["data"] is True or json_data["data"].get("running_status"):
+                    continue
+                message = self._structure_answer(json_data)
+                yield message
+        else:
+            try:
+                json_data = json.loads(res.text)
+            except ValueError:
+                raise Exception(f"Invalid response {res}")
+            return self._structure_answer(json_data)
+        
+
+    def _structure_answer(self, json_data):
+        answer = json_data["data"]["answer"]
+        reference = json_data["data"].get("reference", {})
+        temp_dict = {
+            "content": answer,
+            "role": "assistant"
+        }
+        if reference and "chunks" in reference:
+            chunks = reference["chunks"]
+            temp_dict["reference"] = chunks
+        message = Message(self.rag, temp_dict)
+        return message
+
+    def _ask_chat(self, question: str, stream: bool, **kwargs):
+        json_data = {"question": question, "stream": stream, "session_id": self.id}
+        json_data.update(kwargs)
+        res = self.post(f"/chats/{self.chat_id}/completions",
+                        json_data, stream=stream)
+        return res
+
+    def _ask_agent(self, question: str, stream: bool):
+        res = self.post(f"/agents/{self.agent_id}/completions",
+                        {"question": question, "stream": stream, "session_id": self.id}, stream=stream)
+        return res
+
+    def update(self, update_message):
+        res = self.put(f"/chats/{self.chat_id}/sessions/{self.id}",
+                       update_message)
+        res = res.json()
+        if res.get("code") != 0:
+            raise Exception(res.get("message"))
+
+
+class Message(Base):
+    def __init__(self, rag, res_dict):
+        self.content = "Hi! I am your assistant, can I help you?"
+        self.reference = None
+        self.role = "assistant"
+        self.prompt = None
+        self.id = None
+        super().__init__(rag, res_dict)