将flask改成fastapi

api/apps/conversation_app.py

@@ -0,0 +1,419 @@
+#
+#  Copyright 2024 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
+import re
+import logging
+from copy import deepcopy
+from flask import Response, request
+from flask_login import current_user, login_required
+from api import settings
+from api.db import LLMType
+from api.db.db_models import APIToken
+from api.db.services.conversation_service import ConversationService, structure_answer
+from api.db.services.dialog_service import DialogService, ask, chat, gen_mindmap
+from api.db.services.llm_service import LLMBundle
+from api.db.services.search_service import SearchService
+from api.db.services.tenant_llm_service import TenantLLMService
+from api.db.services.user_service import TenantService, UserTenantService
+from api.utils.api_utils import get_data_error_result, get_json_result, server_error_response, validate_request
+from rag.prompts.template import load_prompt
+from rag.prompts.generator import chunks_format
+
+
+@manager.route("/set", methods=["POST"])  # noqa: F821
+@login_required
+def set_conversation():
+    req = request.json
+    conv_id = req.get("conversation_id")
+    is_new = req.get("is_new")
+    name = req.get("name", "New conversation")
+    req["user_id"] = current_user.id
+
+    if len(name) > 255:
+        name = name[0:255]
+
+    del req["is_new"]
+    if not is_new:
+        del req["conversation_id"]
+        try:
+            if not ConversationService.update_by_id(conv_id, req):
+                return get_data_error_result(message="Conversation not found!")
+            e, conv = ConversationService.get_by_id(conv_id)
+            if not e:
+                return get_data_error_result(message="Fail to update a conversation!")
+            conv = conv.to_dict()
+            return get_json_result(data=conv)
+        except Exception as e:
+            return server_error_response(e)
+
+    try:
+        e, dia = DialogService.get_by_id(req["dialog_id"])
+        if not e:
+            return get_data_error_result(message="Dialog not found")
+        conv = {
+            "id": conv_id,
+            "dialog_id": req["dialog_id"],
+            "name": name,
+            "message": [{"role": "assistant", "content": dia.prompt_config["prologue"]}],
+            "user_id": current_user.id,
+            "reference": [],
+        }
+        ConversationService.save(**conv)
+        return get_json_result(data=conv)
+    except Exception as e:
+        return server_error_response(e)
+
+
+@manager.route("/get", methods=["GET"])  # noqa: F821
+@login_required
+def get():
+    conv_id = request.args["conversation_id"]
+    try:
+        e, conv = ConversationService.get_by_id(conv_id)
+        if not e:
+            return get_data_error_result(message="Conversation not found!")
+        tenants = UserTenantService.query(user_id=current_user.id)
+        avatar = None
+        for tenant in tenants:
+            dialog = DialogService.query(tenant_id=tenant.tenant_id, id=conv.dialog_id)
+            if dialog and len(dialog) > 0:
+                avatar = dialog[0].icon
+                break
+        else:
+            return get_json_result(data=False, message="Only owner of conversation authorized for this operation.", code=settings.RetCode.OPERATING_ERROR)
+
+        for ref in conv.reference:
+            if isinstance(ref, list):
+                continue
+            ref["chunks"] = chunks_format(ref)
+
+        conv = conv.to_dict()
+        conv["avatar"] = avatar
+        return get_json_result(data=conv)
+    except Exception as e:
+        return server_error_response(e)
+
+
+@manager.route("/getsse/<dialog_id>", methods=["GET"])  # type: ignore # noqa: F821
+def getsse(dialog_id):
+    token = request.headers.get("Authorization").split()
+    if len(token) != 2:
+        return get_data_error_result(message='Authorization is not valid!"')
+    token = token[1]
+    objs = APIToken.query(beta=token)
+    if not objs:
+        return get_data_error_result(message='Authentication error: API key is invalid!"')
+    try:
+        e, conv = DialogService.get_by_id(dialog_id)
+        if not e:
+            return get_data_error_result(message="Dialog not found!")
+        conv = conv.to_dict()
+        conv["avatar"] = conv["icon"]
+        del conv["icon"]
+        return get_json_result(data=conv)
+    except Exception as e:
+        return server_error_response(e)
+
+
+@manager.route("/rm", methods=["POST"])  # noqa: F821
+@login_required
+def rm():
+    conv_ids = request.json["conversation_ids"]
+    try:
+        for cid in conv_ids:
+            exist, conv = ConversationService.get_by_id(cid)
+            if not exist:
+                return get_data_error_result(message="Conversation not found!")
+            tenants = UserTenantService.query(user_id=current_user.id)
+            for tenant in tenants:
+                if DialogService.query(tenant_id=tenant.tenant_id, id=conv.dialog_id):
+                    break
+            else:
+                return get_json_result(data=False, message="Only owner of conversation authorized for this operation.", code=settings.RetCode.OPERATING_ERROR)
+            ConversationService.delete_by_id(cid)
+        return get_json_result(data=True)
+    except Exception as e:
+        return server_error_response(e)
+
+
+@manager.route("/list", methods=["GET"])  # noqa: F821
+@login_required
+def list_conversation():
+    dialog_id = request.args["dialog_id"]
+    try:
+        if not DialogService.query(tenant_id=current_user.id, id=dialog_id):
+            return get_json_result(data=False, message="Only owner of dialog authorized for this operation.", code=settings.RetCode.OPERATING_ERROR)
+        convs = ConversationService.query(dialog_id=dialog_id, order_by=ConversationService.model.create_time, reverse=True)
+
+        convs = [d.to_dict() for d in convs]
+        return get_json_result(data=convs)
+    except Exception as e:
+        return server_error_response(e)
+
+
+@manager.route("/completion", methods=["POST"])  # noqa: F821
+@login_required
+@validate_request("conversation_id", "messages")
+def completion():
+    req = request.json
+    msg = []
+    for m in req["messages"]:
+        if m["role"] == "system":
+            continue
+        if m["role"] == "assistant" and not msg:
+            continue
+        msg.append(m)
+    message_id = msg[-1].get("id")
+    chat_model_id = req.get("llm_id", "")
+    req.pop("llm_id", None)
+
+    chat_model_config = {}
+    for model_config in [
+        "temperature",
+        "top_p",
+        "frequency_penalty",
+        "presence_penalty",
+        "max_tokens",
+    ]:
+        config = req.get(model_config)
+        if config:
+            chat_model_config[model_config] = config
+
+    try:
+        e, conv = ConversationService.get_by_id(req["conversation_id"])
+        if not e:
+            return get_data_error_result(message="Conversation not found!")
+        conv.message = deepcopy(req["messages"])
+        e, dia = DialogService.get_by_id(conv.dialog_id)
+        if not e:
+            return get_data_error_result(message="Dialog not found!")
+        del req["conversation_id"]
+        del req["messages"]
+
+        if not conv.reference:
+            conv.reference = []
+        conv.reference = [r for r in conv.reference if r]
+        conv.reference.append({"chunks": [], "doc_aggs": []})
+
+        if chat_model_id:
+            if not TenantLLMService.get_api_key(tenant_id=dia.tenant_id, model_name=chat_model_id):
+                req.pop("chat_model_id", None)
+                req.pop("chat_model_config", None)
+                return get_data_error_result(message=f"Cannot use specified model {chat_model_id}.")
+            dia.llm_id = chat_model_id
+            dia.llm_setting = chat_model_config
+
+        is_embedded = bool(chat_model_id)
+        def stream():
+            nonlocal dia, msg, req, conv
+            try:
+                for ans in chat(dia, msg, True, **req):
+                    ans = structure_answer(conv, ans, message_id, conv.id)
+                    yield "data:" + json.dumps({"code": 0, "message": "", "data": ans}, ensure_ascii=False) + "\n\n"
+                if not is_embedded:
+                    ConversationService.update_by_id(conv.id, conv.to_dict())
+            except Exception as e:
+                logging.exception(e)
+                yield "data:" + json.dumps({"code": 500, "message": str(e), "data": {"answer": "**ERROR**: " + str(e), "reference": []}}, ensure_ascii=False) + "\n\n"
+            yield "data:" + json.dumps({"code": 0, "message": "", "data": True}, ensure_ascii=False) + "\n\n"
+
+        if req.get("stream", True):
+            resp = Response(stream(), mimetype="text/event-stream")
+            resp.headers.add_header("Cache-control", "no-cache")
+            resp.headers.add_header("Connection", "keep-alive")
+            resp.headers.add_header("X-Accel-Buffering", "no")
+            resp.headers.add_header("Content-Type", "text/event-stream; charset=utf-8")
+            return resp
+
+        else:
+            answer = None
+            for ans in chat(dia, msg, **req):
+                answer = structure_answer(conv, ans, message_id, conv.id)
+                if not is_embedded:
+                    ConversationService.update_by_id(conv.id, conv.to_dict())
+                break
+            return get_json_result(data=answer)
+    except Exception as e:
+        return server_error_response(e)
+
+
+@manager.route("/tts", methods=["POST"])  # noqa: F821
+@login_required
+def tts():
+    req = request.json
+    text = req["text"]
+
+    tenants = TenantService.get_info_by(current_user.id)
+    if not tenants:
+        return get_data_error_result(message="Tenant not found!")
+
+    tts_id = tenants[0]["tts_id"]
+    if not tts_id:
+        return get_data_error_result(message="No default TTS model is set")
+
+    tts_mdl = LLMBundle(tenants[0]["tenant_id"], LLMType.TTS, tts_id)
+
+    def stream_audio():
+        try:
+            for txt in re.split(r"[，。/《》？；：！\n\r:;]+", text):
+                for chunk in tts_mdl.tts(txt):
+                    yield chunk
+        except Exception as e:
+            yield ("data:" + json.dumps({"code": 500, "message": str(e), "data": {"answer": "**ERROR**: " + str(e)}}, ensure_ascii=False)).encode("utf-8")
+
+    resp = Response(stream_audio(), mimetype="audio/mpeg")
+    resp.headers.add_header("Cache-Control", "no-cache")
+    resp.headers.add_header("Connection", "keep-alive")
+    resp.headers.add_header("X-Accel-Buffering", "no")
+
+    return resp
+
+
+@manager.route("/delete_msg", methods=["POST"])  # noqa: F821
+@login_required
+@validate_request("conversation_id", "message_id")
+def delete_msg():
+    req = request.json
+    e, conv = ConversationService.get_by_id(req["conversation_id"])
+    if not e:
+        return get_data_error_result(message="Conversation not found!")
+
+    conv = conv.to_dict()
+    for i, msg in enumerate(conv["message"]):
+        if req["message_id"] != msg.get("id", ""):
+            continue
+        assert conv["message"][i + 1]["id"] == req["message_id"]
+        conv["message"].pop(i)
+        conv["message"].pop(i)
+        conv["reference"].pop(max(0, i // 2 - 1))
+        break
+
+    ConversationService.update_by_id(conv["id"], conv)
+    return get_json_result(data=conv)
+
+
+@manager.route("/thumbup", methods=["POST"])  # noqa: F821
+@login_required
+@validate_request("conversation_id", "message_id")
+def thumbup():
+    req = request.json
+    e, conv = ConversationService.get_by_id(req["conversation_id"])
+    if not e:
+        return get_data_error_result(message="Conversation not found!")
+    up_down = req.get("thumbup")
+    feedback = req.get("feedback", "")
+    conv = conv.to_dict()
+    for i, msg in enumerate(conv["message"]):
+        if req["message_id"] == msg.get("id", "") and msg.get("role", "") == "assistant":
+            if up_down:
+                msg["thumbup"] = True
+                if "feedback" in msg:
+                    del msg["feedback"]
+            else:
+                msg["thumbup"] = False
+                if feedback:
+                    msg["feedback"] = feedback
+            break
+
+    ConversationService.update_by_id(conv["id"], conv)
+    return get_json_result(data=conv)
+
+
+@manager.route("/ask", methods=["POST"])  # noqa: F821
+@login_required
+@validate_request("question", "kb_ids")
+def ask_about():
+    req = request.json
+    uid = current_user.id
+
+    search_id = req.get("search_id", "")
+    search_app = None
+    search_config = {}
+    if search_id:
+        search_app = SearchService.get_detail(search_id)
+    if search_app:
+        search_config = search_app.get("search_config", {})
+
+    def stream():
+        nonlocal req, uid
+        try:
+            for ans in ask(req["question"], req["kb_ids"], uid, search_config=search_config):
+                yield "data:" + json.dumps({"code": 0, "message": "", "data": ans}, ensure_ascii=False) + "\n\n"
+        except Exception as e:
+            yield "data:" + json.dumps({"code": 500, "message": str(e), "data": {"answer": "**ERROR**: " + str(e), "reference": []}}, ensure_ascii=False) + "\n\n"
+        yield "data:" + json.dumps({"code": 0, "message": "", "data": True}, ensure_ascii=False) + "\n\n"
+
+    resp = Response(stream(), mimetype="text/event-stream")
+    resp.headers.add_header("Cache-control", "no-cache")
+    resp.headers.add_header("Connection", "keep-alive")
+    resp.headers.add_header("X-Accel-Buffering", "no")
+    resp.headers.add_header("Content-Type", "text/event-stream; charset=utf-8")
+    return resp
+
+
+@manager.route("/mindmap", methods=["POST"])  # noqa: F821
+@login_required
+@validate_request("question", "kb_ids")
+def mindmap():
+    req = request.json
+    search_id = req.get("search_id", "")
+    search_app = SearchService.get_detail(search_id) if search_id else {}
+    search_config = search_app.get("search_config", {}) if search_app else {}
+    kb_ids = search_config.get("kb_ids", [])
+    kb_ids.extend(req["kb_ids"])
+    kb_ids = list(set(kb_ids))
+
+    mind_map = gen_mindmap(req["question"], kb_ids, search_app.get("tenant_id", current_user.id), search_config)
+    if "error" in mind_map:
+        return server_error_response(Exception(mind_map["error"]))
+    return get_json_result(data=mind_map)
+
+
+@manager.route("/related_questions", methods=["POST"])  # noqa: F821
+@login_required
+@validate_request("question")
+def related_questions():
+    req = request.json
+
+    search_id = req.get("search_id", "")
+    search_config = {}
+    if search_id:
+        if search_app := SearchService.get_detail(search_id):
+            search_config = search_app.get("search_config", {})
+
+    question = req["question"]
+
+    chat_id = search_config.get("chat_id", "")
+    chat_mdl = LLMBundle(current_user.id, LLMType.CHAT, chat_id)
+
+    gen_conf = search_config.get("llm_setting", {"temperature": 0.9})
+    if "parameter" in gen_conf:
+        del gen_conf["parameter"]
+    prompt = load_prompt("related_question")
+    ans = chat_mdl.chat(
+        prompt,
+        [
+            {
+                "role": "user",
+                "content": f"""
+Keywords: {question}
+Related search terms:
+    """,
+            }
+        ],
+        gen_conf,
+    )
+    return get_json_result(data=[re.sub(r"^[0-9]\. ", "", a) for a in ans.split("\n") if re.match(r"^[0-9]\. ", a)])