Merge branch 'feat/universal-chat' into deploy/dev

README.md

@@ -17,9 +17,15 @@ A single API encompassing plugin capabilities, context enhancement, and more, sa
 Visual data analysis, log review, and annotation for applications
 Dify is compatible with Langchain, meaning we'll gradually support multiple LLMs, currently supported:
 
-- GPT 3 (text-davinci-003)
-- GPT 3.5 Turbo(ChatGPT)
-- GPT-4
+* **OpenAI** ：GPT4、GPT3.5-turbo、GPT3.5-turbo-16k、text-davinci-003
+
+* **Azure OpenAI**
+
+* **Antropic**：Claude2、Claude-instant
+> We've got 1000 free trial credits available for all cloud service users to try out the Claude model.Visit [Dify.ai](https://dify.ai) and
+try it now.
+
+* **hugging face Hub**：Coming soon.
 
 ## Use Cloud Services
 

README_CN.md

@@ -17,11 +17,16 @@
 - 一套 API 即可包含插件、上下文增强等能力，替你省下了后端代码的编写工作
 - 可视化的对应用进行数据分析，查阅日志或进行标注
 
-Dify 兼容 Langchain，这意味着我们将逐步支持多种 LLMs ，目前已支持：
+Dify 兼容 Langchain，这意味着我们将逐步支持多种 LLMs ，目前支持的模型供应商：
 
-- GPT 3 (text-davinci-003)
-- GPT 3.5 Turbo(ChatGPT)
-- GPT-4
+* **OpenAI**：GPT4、GPT3.5-turbo、GPT3.5-turbo-16k、text-davinci-003 
+
+* **Azure OpenAI Service**
+* **Anthropic**：Claude2、Claude-instant
+
+> 我们为所有注册云端版的用户免费提供了 1000 次 Claude 模型的消息调用额度，登录 [dify.ai](https://cloud.dify.ai) 即可使用。
+
+* **Hugging Face Hub**（即将推出）
 
 ## 使用云服务
 

api/app.py

@@ -22,7 +22,7 @@ from extensions.ext_database import db
 from extensions.ext_login import login_manager
 
 # DO NOT REMOVE BELOW
-from models import model, account, dataset, web, task, source
+from models import model, account, dataset, web, task, source, tool
 from events import event_handlers
 # DO NOT REMOVE ABOVE
 

api/controllers/console/__init__.py

@@ -18,7 +18,10 @@ from .auth import login, oauth, data_source_oauth, activate
 from .datasets import datasets, datasets_document, datasets_segments, file, hit_testing, data_source
 
 # Import workspace controllers
-from .workspace import workspace, members, providers, account
+from .workspace import workspace, members, model_providers, account, tool_providers
 
 # Import explore controllers
 from .explore import installed_app, recommended_app, completion, conversation, message, parameter, saved_message, audio
+
+# Import universal chat controllers
+from .universal_chat import chat, conversation, message, parameter, audio

api/controllers/console/app/app.py

@@ -24,6 +24,7 @@ model_config_fields = {
     'suggested_questions_after_answer': fields.Raw(attribute='suggested_questions_after_answer_dict'),
     'speech_to_text': fields.Raw(attribute='speech_to_text_dict'),
     'more_like_this': fields.Raw(attribute='more_like_this_dict'),
+    'sensitive_word_avoidance': fields.Raw(attribute='sensitive_word_avoidance_dict'),
     'model': fields.Raw(attribute='model_dict'),
     'user_input_form': fields.Raw(attribute='user_input_form_list'),
     'pre_prompt': fields.String,
@@ -96,7 +97,8 @@ class AppListApi(Resource):
         args = parser.parse_args()
 
         app_models = db.paginate(
-            db.select(App).where(App.tenant_id == current_user.current_tenant_id).order_by(App.created_at.desc()),
+            db.select(App).where(App.tenant_id == current_user.current_tenant_id,
+                                 App.is_universal == False).order_by(App.created_at.desc()),
             page=args['page'],
             per_page=args['limit'],
             error_out=False)
@@ -147,6 +149,7 @@ class AppListApi(Resource):
                 suggested_questions_after_answer=json.dumps(model_configuration['suggested_questions_after_answer']),
                 speech_to_text=json.dumps(model_configuration['speech_to_text']),
                 more_like_this=json.dumps(model_configuration['more_like_this']),
+                sensitive_word_avoidance=json.dumps(model_configuration['sensitive_word_avoidance']),
                 model=json.dumps(model_configuration['model']),
                 user_input_form=json.dumps(model_configuration['user_input_form']),
                 pre_prompt=model_configuration['pre_prompt'],
@@ -438,6 +441,7 @@ class AppCopy(Resource):
             suggested_questions_after_answer=app_config.suggested_questions_after_answer,
             speech_to_text=app_config.speech_to_text,
             more_like_this=app_config.more_like_this,
+            sensitive_word_avoidance=app_config.sensitive_word_avoidance,
             model=app_config.model,
             user_input_form=app_config.user_input_form,
             pre_prompt=app_config.pre_prompt,

api/controllers/console/app/model_config.py

@@ -43,6 +43,7 @@ class ModelConfigResource(Resource):
             suggested_questions_after_answer=json.dumps(model_configuration['suggested_questions_after_answer']),
             speech_to_text=json.dumps(model_configuration['speech_to_text']),
             more_like_this=json.dumps(model_configuration['more_like_this']),
+            sensitive_word_avoidance=json.dumps(model_configuration['sensitive_word_avoidance']),
             model=json.dumps(model_configuration['model']),
             user_input_form=json.dumps(model_configuration['user_input_form']),
             pre_prompt=model_configuration['pre_prompt'],

api/controllers/console/explore/conversation.py

@@ -65,7 +65,10 @@ class ConversationApi(InstalledAppResource):
             raise NotChatAppError()
 
         conversation_id = str(c_id)
-        ConversationService.delete(app_model, conversation_id, current_user)
+        try:
+            ConversationService.delete(app_model, conversation_id, current_user)
+        except ConversationNotExistsError:
+            raise NotFound("Conversation Not Exists.")
         WebConversationService.unpin(app_model, conversation_id, current_user)
 
         return {"result": "success"}, 204

api/controllers/console/universal_chat/audio.py

+# -*- coding:utf-8 -*-
+import logging
+
+from flask import request
+from werkzeug.exceptions import InternalServerError
+
+import services
+from controllers.console import api
+from controllers.console.app.error import AppUnavailableError, ProviderNotInitializeError, \
+    ProviderQuotaExceededError, ProviderModelCurrentlyNotSupportError, CompletionRequestError, \
+    NoAudioUploadedError, AudioTooLargeError, \
+    UnsupportedAudioTypeError, ProviderNotSupportSpeechToTextError
+from controllers.console.universal_chat.wraps import UniversalChatResource
+from core.llm.error import LLMBadRequestError, LLMAPIUnavailableError, LLMAuthorizationError, LLMAPIConnectionError, \
+    LLMRateLimitError, ProviderTokenNotInitError, QuotaExceededError, ModelCurrentlyNotSupportError
+from services.audio_service import AudioService
+from services.errors.audio import NoAudioUploadedServiceError, AudioTooLargeServiceError, \
+    UnsupportedAudioTypeServiceError, ProviderNotSupportSpeechToTextServiceError
+from models.model import AppModelConfig
+
+
+class UniversalChatAudioApi(UniversalChatResource):
+    def post(self, universal_app):
+        app_model = universal_app
+        app_model_config: AppModelConfig = app_model.app_model_config
+
+        if not app_model_config.speech_to_text_dict['enabled']:
+            raise AppUnavailableError()
+
+        file = request.files['file']
+
+        try:
+            response = AudioService.transcript(
+                tenant_id=app_model.tenant_id,
+                file=file,
+            )
+
+            return response
+        except services.errors.app_model_config.AppModelConfigBrokenError:
+            logging.exception("App model config broken.")
+            raise AppUnavailableError()
+        except NoAudioUploadedServiceError:
+            raise NoAudioUploadedError()
+        except AudioTooLargeServiceError as e:
+            raise AudioTooLargeError(str(e))
+        except UnsupportedAudioTypeServiceError:
+            raise UnsupportedAudioTypeError()
+        except ProviderNotSupportSpeechToTextServiceError:
+            raise ProviderNotSupportSpeechToTextError()
+        except ProviderTokenNotInitError:
+            raise ProviderNotInitializeError()
+        except QuotaExceededError:
+            raise ProviderQuotaExceededError()
+        except ModelCurrentlyNotSupportError:
+            raise ProviderModelCurrentlyNotSupportError()
+        except (LLMBadRequestError, LLMAPIConnectionError, LLMAPIUnavailableError,
+                LLMRateLimitError, LLMAuthorizationError) as e:
+            raise CompletionRequestError(str(e))
+        except ValueError as e:
+            raise e
+        except Exception as e:
+            logging.exception("internal server error.")
+            raise InternalServerError()
+        
+
+api.add_resource(UniversalChatAudioApi, '/universal-chat/audio-to-text')
\ No newline at end of file

api/controllers/console/universal_chat/chat.py

+import json
+import logging
+from typing import Generator, Union
+
+from flask import Response, stream_with_context
+from flask_login import current_user
+from flask_restful import reqparse
+from werkzeug.exceptions import InternalServerError, NotFound
+
+import services
+from controllers.console import api
+from controllers.console.app.error import ConversationCompletedError, AppUnavailableError, ProviderNotInitializeError, \
+    ProviderQuotaExceededError, ProviderModelCurrentlyNotSupportError, CompletionRequestError
+from controllers.console.universal_chat.wraps import UniversalChatResource
+from core.constant import llm_constant
+from core.conversation_message_task import PubHandler
+from core.llm.error import ProviderTokenNotInitError, QuotaExceededError, ModelCurrentlyNotSupportError, \
+    LLMBadRequestError, LLMAPIConnectionError, LLMAPIUnavailableError, LLMRateLimitError, LLMAuthorizationError
+from libs.helper import uuid_value
+from services.completion_service import CompletionService
+
+
+class UniversalChatApi(UniversalChatResource):
+    def post(self, universal_app):
+        app_model = universal_app
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('query', type=str, required=True, location='json')
+        parser.add_argument('conversation_id', type=uuid_value, location='json')
+        parser.add_argument('model', type=str, required=True, location='json')
+        parser.add_argument('tools', type=list, required=True, location='json')
+        args = parser.parse_args()
+
+        app_model_config = app_model.app_model_config
+
+        # update app model config
+        args['model_config'] = app_model_config.to_dict()
+        args['model_config']['model']['name'] = args['model']
+
+        if not llm_constant.models[args['model']]:
+            raise ValueError("Model not exists.")
+
+        args['model_config']['model']['provider'] = llm_constant.models[args['model']]
+        args['model_config']['agent_mode']['tools'] = args['tools']
+
+        args['inputs'] = {}
+
+        del args['model']
+        del args['tools']
+
+        try:
+            response = CompletionService.completion(
+                app_model=app_model,
+                user=current_user,
+                args=args,
+                from_source='console',
+                streaming=True,
+                is_model_config_override=True,
+            )
+
+            return compact_response(response)
+        except services.errors.conversation.ConversationNotExistsError:
+            raise NotFound("Conversation Not Exists.")
+        except services.errors.conversation.ConversationCompletedError:
+            raise ConversationCompletedError()
+        except services.errors.app_model_config.AppModelConfigBrokenError:
+            logging.exception("App model config broken.")
+            raise AppUnavailableError()
+        except ProviderTokenNotInitError:
+            raise ProviderNotInitializeError()
+        except QuotaExceededError:
+            raise ProviderQuotaExceededError()
+        except ModelCurrentlyNotSupportError:
+            raise ProviderModelCurrentlyNotSupportError()
+        except (LLMBadRequestError, LLMAPIConnectionError, LLMAPIUnavailableError,
+                LLMRateLimitError, LLMAuthorizationError) as e:
+            raise CompletionRequestError(str(e))
+        except ValueError as e:
+            raise e
+        except Exception as e:
+            logging.exception("internal server error.")
+            raise InternalServerError()
+
+
+class UniversalChatStopApi(UniversalChatResource):
+    def post(self, universal_app, task_id):
+        PubHandler.stop(current_user, task_id)
+
+        return {'result': 'success'}, 200
+
+
+def compact_response(response: Union[dict | Generator]) -> Response:
+    if isinstance(response, dict):
+        return Response(response=json.dumps(response), status=200, mimetype='application/json')
+    else:
+        def generate() -> Generator:
+            try:
+                for chunk in response:
+                    yield chunk
+            except services.errors.conversation.ConversationNotExistsError:
+                yield "data: " + json.dumps(api.handle_error(NotFound("Conversation Not Exists.")).get_json()) + "\n\n"
+            except services.errors.conversation.ConversationCompletedError:
+                yield "data: " + json.dumps(api.handle_error(ConversationCompletedError()).get_json()) + "\n\n"
+            except services.errors.app_model_config.AppModelConfigBrokenError:
+                logging.exception("App model config broken.")
+                yield "data: " + json.dumps(api.handle_error(AppUnavailableError()).get_json()) + "\n\n"
+            except ProviderTokenNotInitError:
+                yield "data: " + json.dumps(api.handle_error(ProviderNotInitializeError()).get_json()) + "\n\n"
+            except QuotaExceededError:
+                yield "data: " + json.dumps(api.handle_error(ProviderQuotaExceededError()).get_json()) + "\n\n"
+            except ModelCurrentlyNotSupportError:
+                yield "data: " + json.dumps(api.handle_error(ProviderModelCurrentlyNotSupportError()).get_json()) + "\n\n"
+            except (LLMBadRequestError, LLMAPIConnectionError, LLMAPIUnavailableError,
+                    LLMRateLimitError, LLMAuthorizationError) as e:
+                yield "data: " + json.dumps(api.handle_error(CompletionRequestError(str(e))).get_json()) + "\n\n"
+            except ValueError as e:
+                yield "data: " + json.dumps(api.handle_error(e).get_json()) + "\n\n"
+            except Exception:
+                logging.exception("internal server error.")
+                yield "data: " + json.dumps(api.handle_error(InternalServerError()).get_json()) + "\n\n"
+
+        return Response(stream_with_context(generate()), status=200,
+                        mimetype='text/event-stream')
+
+
+api.add_resource(UniversalChatApi, '/universal-chat/messages')
+api.add_resource(UniversalChatStopApi, 'universal-chat/messages/<string:task_id>/stop')

api/controllers/console/universal_chat/conversation.py

+# -*- coding:utf-8 -*-
+from flask_login import current_user
+from flask_restful import fields, reqparse, marshal_with
+from flask_restful.inputs import int_range
+from werkzeug.exceptions import NotFound
+
+from controllers.console import api
+from controllers.console.universal_chat.wraps import UniversalChatResource
+from libs.helper import TimestampField, uuid_value
+from services.conversation_service import ConversationService
+from services.errors.conversation import LastConversationNotExistsError, ConversationNotExistsError
+from services.web_conversation_service import WebConversationService
+
+conversation_fields = {
+    'id': fields.String,
+    'name': fields.String,
+    'inputs': fields.Raw,
+    'status': fields.String,
+    'introduction': fields.String,
+    'created_at': TimestampField,
+    'model_config': fields.Raw,
+}
+
+conversation_infinite_scroll_pagination_fields = {
+    'limit': fields.Integer,
+    'has_more': fields.Boolean,
+    'data': fields.List(fields.Nested(conversation_fields))
+}
+
+
+class UniversalChatConversationListApi(UniversalChatResource):
+
+    @marshal_with(conversation_infinite_scroll_pagination_fields)
+    def get(self, universal_app):
+        app_model = universal_app
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('last_id', type=uuid_value, location='args')
+        parser.add_argument('limit', type=int_range(1, 100), required=False, default=20, location='args')
+        parser.add_argument('pinned', type=str, choices=['true', 'false', None], location='args')
+        args = parser.parse_args()
+
+        pinned = None
+        if 'pinned' in args and args['pinned'] is not None:
+            pinned = True if args['pinned'] == 'true' else False
+
+        try:
+            return WebConversationService.pagination_by_last_id(
+                app_model=app_model,
+                user=current_user,
+                last_id=args['last_id'],
+                limit=args['limit'],
+                pinned=pinned
+            )
+        except LastConversationNotExistsError:
+            raise NotFound("Last Conversation Not Exists.")
+
+
+class UniversalChatConversationApi(UniversalChatResource):
+    def delete(self, universal_app, c_id):
+        app_model = universal_app
+        conversation_id = str(c_id)
+
+        try:
+            ConversationService.delete(app_model, conversation_id, current_user)
+        except ConversationNotExistsError:
+            raise NotFound("Conversation Not Exists.")
+
+        WebConversationService.unpin(app_model, conversation_id, current_user)
+
+        return {"result": "success"}, 204
+
+
+class UniversalChatConversationRenameApi(UniversalChatResource):
+
+    @marshal_with(conversation_fields)
+    def post(self, universal_app, c_id):
+        app_model = universal_app
+        conversation_id = str(c_id)
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('name', type=str, required=True, location='json')
+        args = parser.parse_args()
+
+        try:
+            return ConversationService.rename(app_model, conversation_id, current_user, args['name'])
+        except ConversationNotExistsError:
+            raise NotFound("Conversation Not Exists.")
+
+
+class UniversalChatConversationPinApi(UniversalChatResource):
+
+    def patch(self, universal_app, c_id):
+        app_model = universal_app
+        conversation_id = str(c_id)
+
+        try:
+            WebConversationService.pin(app_model, conversation_id, current_user)
+        except ConversationNotExistsError:
+            raise NotFound("Conversation Not Exists.")
+
+        return {"result": "success"}
+
+
+class UniversalChatConversationUnPinApi(UniversalChatResource):
+    def patch(self, universal_app, c_id):
+        app_model = universal_app
+        conversation_id = str(c_id)
+        WebConversationService.unpin(app_model, conversation_id, current_user)
+
+        return {"result": "success"}
+
+
+api.add_resource(UniversalChatConversationRenameApi, '/universal-chat/conversations/<uuid:c_id>/name')
+api.add_resource(UniversalChatConversationListApi, '/universal-chat/conversations')
+api.add_resource(UniversalChatConversationApi, '/universal-chat/conversations/<uuid:c_id>')
+api.add_resource(UniversalChatConversationPinApi, '/universal-chat/conversations/<uuid:c_id>/pin')
+api.add_resource(UniversalChatConversationUnPinApi, '/universal-chat/conversations/<uuid:c_id>/unpin')

api/controllers/console/universal_chat/message.py

+# -*- coding:utf-8 -*-
+import logging
+
+from flask_login import current_user
+from flask_restful import reqparse, fields, marshal_with
+from flask_restful.inputs import int_range
+from werkzeug.exceptions import NotFound, InternalServerError
+
+import services
+from controllers.console import api
+from controllers.console.app.error import ProviderNotInitializeError, \
+    ProviderQuotaExceededError, ProviderModelCurrentlyNotSupportError, CompletionRequestError
+from controllers.console.explore.error import AppSuggestedQuestionsAfterAnswerDisabledError
+from controllers.console.universal_chat.wraps import UniversalChatResource
+from core.llm.error import LLMRateLimitError, LLMBadRequestError, LLMAuthorizationError, LLMAPIConnectionError, \
+    ProviderTokenNotInitError, LLMAPIUnavailableError, QuotaExceededError, ModelCurrentlyNotSupportError
+from libs.helper import uuid_value, TimestampField
+from services.errors.conversation import ConversationNotExistsError
+from services.errors.message import MessageNotExistsError, SuggestedQuestionsAfterAnswerDisabledError
+from services.message_service import MessageService
+
+
+class UniversalChatMessageListApi(UniversalChatResource):
+    feedback_fields = {
+        'rating': fields.String
+    }
+
+    agent_thought_fields = {
+        'id': fields.String,
+        'chain_id': fields.String,
+        'message_id': fields.String,
+        'position': fields.Integer,
+        'thought': fields.String,
+        'tool': fields.String,
+        'tool_input': fields.String,
+        'created_at': TimestampField
+    }
+
+    message_fields = {
+        'id': fields.String,
+        'conversation_id': fields.String,
+        'inputs': fields.Raw,
+        'query': fields.String,
+        'answer': fields.String,
+        'feedback': fields.Nested(feedback_fields, attribute='user_feedback', allow_null=True),
+        'created_at': TimestampField,
+        'agent_thoughts': fields.List(fields.Nested(agent_thought_fields))
+    }
+
+    message_infinite_scroll_pagination_fields = {
+        'limit': fields.Integer,
+        'has_more': fields.Boolean,
+        'data': fields.List(fields.Nested(message_fields))
+    }
+
+    @marshal_with(message_infinite_scroll_pagination_fields)
+    def get(self, universal_app):
+        app_model = universal_app
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('conversation_id', required=True, type=uuid_value, location='args')
+        parser.add_argument('first_id', type=uuid_value, location='args')
+        parser.add_argument('limit', type=int_range(1, 100), required=False, default=20, location='args')
+        args = parser.parse_args()
+
+        try:
+            return MessageService.pagination_by_first_id(app_model, current_user,
+                                                     args['conversation_id'], args['first_id'], args['limit'])
+        except services.errors.conversation.ConversationNotExistsError:
+            raise NotFound("Conversation Not Exists.")
+        except services.errors.message.FirstMessageNotExistsError:
+            raise NotFound("First Message Not Exists.")
+
+
+class UniversalChatMessageFeedbackApi(UniversalChatResource):
+    def post(self, universal_app, message_id):
+        app_model = universal_app
+        message_id = str(message_id)
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('rating', type=str, choices=['like', 'dislike', None], location='json')
+        args = parser.parse_args()
+
+        try:
+            MessageService.create_feedback(app_model, message_id, current_user, args['rating'])
+        except services.errors.message.MessageNotExistsError:
+            raise NotFound("Message Not Exists.")
+
+        return {'result': 'success'}
+
+
+class UniversalChatMessageSuggestedQuestionApi(UniversalChatResource):
+    def get(self, universal_app, message_id):
+        app_model = universal_app
+        message_id = str(message_id)
+
+        try:
+            questions = MessageService.get_suggested_questions_after_answer(
+                app_model=app_model,
+                user=current_user,
+                message_id=message_id
+            )
+        except MessageNotExistsError:
+            raise NotFound("Message not found")
+        except ConversationNotExistsError:
+            raise NotFound("Conversation not found")
+        except SuggestedQuestionsAfterAnswerDisabledError:
+            raise AppSuggestedQuestionsAfterAnswerDisabledError()
+        except ProviderTokenNotInitError:
+            raise ProviderNotInitializeError()
+        except QuotaExceededError:
+            raise ProviderQuotaExceededError()
+        except ModelCurrentlyNotSupportError:
+            raise ProviderModelCurrentlyNotSupportError()
+        except (LLMBadRequestError, LLMAPIConnectionError, LLMAPIUnavailableError,
+                LLMRateLimitError, LLMAuthorizationError) as e:
+            raise CompletionRequestError(str(e))
+        except Exception:
+            logging.exception("internal server error.")
+            raise InternalServerError()
+
+        return {'data': questions}
+
+
+api.add_resource(UniversalChatMessageListApi, '/universal-chat/messages')
+api.add_resource(UniversalChatMessageFeedbackApi, '/universal-chat/messages/<uuid:message_id>/feedbacks')
+api.add_resource(UniversalChatMessageSuggestedQuestionApi, '/universal-chat/messages/<uuid:message_id>/suggested-questions')

api/controllers/console/universal_chat/parameter.py

+# -*- coding:utf-8 -*-
+from flask_restful import marshal_with, fields
+
+from controllers.console import api
+from controllers.console.universal_chat.wraps import UniversalChatResource
+
+
+class UniversalChatParameterApi(UniversalChatResource):
+    """Resource for app variables."""
+    parameters_fields = {
+        'opening_statement': fields.String,
+        'suggested_questions': fields.Raw,
+        'suggested_questions_after_answer': fields.Raw,
+        'speech_to_text': fields.Raw,
+    }
+
+    @marshal_with(parameters_fields)
+    def get(self, universal_app):
+        """Retrieve app parameters."""
+        app_model = universal_app
+        app_model_config = app_model.app_model_config
+
+        return {
+            'opening_statement': app_model_config.opening_statement,
+            'suggested_questions': app_model_config.suggested_questions_list,
+            'suggested_questions_after_answer': app_model_config.suggested_questions_after_answer_dict,
+            'speech_to_text': app_model_config.speech_to_text_dict,
+        }
+
+
+api.add_resource(UniversalChatParameterApi, '/universal-chat/parameters')

api/controllers/console/universal_chat/wraps.py

+import json
+from functools import wraps
+
+from flask_login import login_required, current_user
+from flask_restful import Resource
+from controllers.console.setup import setup_required
+from controllers.console.wraps import account_initialization_required
+from extensions.ext_database import db
+from models.model import App, AppModelConfig
+
+
+def universal_chat_app_required(view=None):
+    def decorator(view):
+        @wraps(view)
+        def decorated(*args, **kwargs):
+            # get universal chat app
+            universal_app = db.session.query(App).filter(
+                App.tenant_id == current_user.current_tenant_id,
+                App.is_universal == True
+            ).first()
+
+            if universal_app is None:
+                # create universal app if not exists
+                universal_app = App(
+                    tenant_id=current_user.current_tenant_id,
+                    name='Universal Chat',
+                    mode='chat',
+                    is_universal=True,
+                    icon='',
+                    icon_background='',
+                    api_rpm=0,
+                    api_rph=0,
+                    enable_site=False,
+                    enable_api=False,
+                    status='normal'
+                )
+
+                db.session.add(universal_app)
+                db.session.flush()
+
+                app_model_config = AppModelConfig(
+                    provider="",
+                    model_id="",
+                    configs={},
+                    opening_statement='',
+                    suggested_questions=json.dumps([]),
+                    suggested_questions_after_answer=json.dumps({'enabled': True}),
+                    speech_to_text=json.dumps({'enabled': True}),
+                    more_like_this=None,
+                    sensitive_word_avoidance=None,
+                    model=json.dumps({
+                        "provider": "openai",
+                        "name": "gpt-3.5-turbo-16k",
+                        "completion_params": {
+                            "max_tokens": 800,
+                            "temperature": 0.8,
+                            "top_p": 1,
+                            "presence_penalty": 0,
+                            "frequency_penalty": 0
+                        }
+                    }),
+                    user_input_form=json.dumps([]),
+                    pre_prompt=None,
+                    agent_mode=json.dumps({"enabled": True, "strategy": "function_call", "tools": []}),
+                )
+
+                app_model_config.app_id = universal_app.id
+                db.session.add(app_model_config)
+                db.session.flush()
+
+                universal_app.app_model_config_id = app_model_config.id
+                db.session.commit()
+
+            return view(universal_app, *args, **kwargs)
+        return decorated
+
+    if view:
+        return decorator(view)
+    return decorator
+
+
+class UniversalChatResource(Resource):
+    # must be reversed if there are multiple decorators
+    method_decorators = [universal_chat_app_required, account_initialization_required, login_required, setup_required]

api/controllers/console/workspace/tool_providers.py

+import json
+
+from flask_login import login_required, current_user
+from flask_restful import Resource, abort, reqparse
+from werkzeug.exceptions import Forbidden
+
+from controllers.console import api
+from controllers.console.setup import setup_required
+from controllers.console.wraps import account_initialization_required
+from core.tool.provider.errors import ToolValidateFailedError
+from core.tool.provider.tool_provider_service import ToolProviderService
+from extensions.ext_database import db
+from models.tool import ToolProvider, ToolProviderName
+
+
+class ToolProviderListApi(Resource):
+
+    @setup_required
+    @login_required
+    @account_initialization_required
+    def get(self):
+        tenant_id = current_user.current_tenant_id
+
+        tool_credential_dict = {}
+        for tool_name in ToolProviderName:
+            tool_credential_dict[tool_name.value] = {
+                'tool_name': tool_name.value,
+                'is_enabled': False,
+                'credentials': None
+            }
+
+        tool_providers = db.session.query(ToolProvider).filter(ToolProvider.tenant_id == tenant_id).all()
+
+        for p in tool_providers:
+            if p.is_enabled:
+                tool_credential_dict[p.tool_name] = {
+                    'tool_name': p.tool_name,
+                    'is_enabled': p.is_enabled,
+                    'credentials': ToolProviderService(tenant_id, p.tool_name).get_credentials(obfuscated=True)
+                }
+
+        return list(tool_credential_dict.values())
+
+
+class ToolProviderCredentialsApi(Resource):
+
+    @setup_required
+    @login_required
+    @account_initialization_required
+    def post(self, provider):
+        if provider not in [p.value for p in ToolProviderName]:
+            abort(404)
+
+        # The role of the current user in the ta table must be admin or owner
+        if current_user.current_tenant.current_role not in ['admin', 'owner']:
+            raise Forbidden(f'User {current_user.id} is not authorized to update provider token, '
+                            f'current_role is {current_user.current_tenant.current_role}')
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('credentials', type=dict, required=True, nullable=False, location='json')
+        args = parser.parse_args()
+
+        tenant_id = current_user.current_tenant_id
+
+        tool_provider_service = ToolProviderService(tenant_id, provider)
+
+        try:
+            tool_provider_service.credentials_validate(args['credentials'])
+        except ToolValidateFailedError as ex:
+            raise ValueError(str(ex))
+
+        encrypted_credentials = json.dumps(tool_provider_service.encrypt_credentials(args['credentials']))
+
+        tenant = current_user.current_tenant
+
+        tool_provider_model = db.session.query(ToolProvider).filter(
+                ToolProvider.tenant_id == tenant.id,
+                ToolProvider.tool_name == provider,
+            ).first()
+
+        # Only allow updating token for CUSTOM provider type
+        if tool_provider_model:
+            tool_provider_model.encrypted_credentials = encrypted_credentials
+            tool_provider_model.is_enabled = True
+        else:
+            tool_provider_model = ToolProvider(
+                tenant_id=tenant.id,
+                tool_name=provider,
+                encrypted_credentials=encrypted_credentials,
+                is_enabled=True
+            )
+            db.session.add(tool_provider_model)
+
+        db.session.commit()
+
+        return {'result': 'success'}, 201
+
+
+class ToolProviderCredentialsValidateApi(Resource):
+
+    @setup_required
+    @login_required
+    @account_initialization_required
+    def post(self, provider):
+        if provider not in [p.value for p in ToolProviderName]:
+            abort(404)
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('credentials', type=dict, required=True, nullable=False, location='json')
+        args = parser.parse_args()
+
+        result = True
+        error = None
+
+        tenant_id = current_user.current_tenant_id
+
+        tool_provider_service = ToolProviderService(tenant_id, provider)
+
+        try:
+            tool_provider_service.credentials_validate(args['credentials'])
+        except ToolValidateFailedError as ex:
+            result = False
+            error = str(ex)
+
+        response = {'result': 'success' if result else 'error'}
+
+        if not result:
+            response['error'] = error
+
+        return response
+
+
+api.add_resource(ToolProviderListApi, '/workspaces/current/tool-providers')
+api.add_resource(ToolProviderCredentialsApi, '/workspaces/current/tool-providers/<provider>/credentials')
+api.add_resource(ToolProviderCredentialsValidateApi,
+                 '/workspaces/current/tool-providers/<provider>/credentials-validate')

api/controllers/web/conversation.py

@@ -62,7 +62,10 @@ class ConversationApi(WebApiResource):
             raise NotChatAppError()
 
         conversation_id = str(c_id)
-        ConversationService.delete(app_model, conversation_id, end_user)
+        try:
+            ConversationService.delete(app_model, conversation_id, end_user)
+        except ConversationNotExistsError:
+            raise NotFound("Conversation Not Exists.")
         WebConversationService.unpin(app_model, conversation_id, end_user)
 
         return {"result": "success"}, 204

api/core/agent/agent/calc_token_mixin.py

+from typing import cast, List
+
+from langchain import OpenAI
+from langchain.base_language import BaseLanguageModel
+from langchain.chat_models.openai import ChatOpenAI
+from langchain.schema import BaseMessage
+
+from core.constant import llm_constant
+
+
+class CalcTokenMixin:
+
+    def get_num_tokens_from_messages(self, llm: BaseLanguageModel, messages: List[BaseMessage], **kwargs) -> int:
+        llm = cast(ChatOpenAI, llm)
+        return llm.get_num_tokens_from_messages(messages)
+
+    def get_message_rest_tokens(self, llm: BaseLanguageModel, messages: List[BaseMessage], **kwargs) -> int:
+        """
+        Got the rest tokens available for the model after excluding messages tokens and completion max tokens
+
+        :param llm:
+        :param messages:
+        :return:
+        """
+        llm = cast(ChatOpenAI, llm)
+        llm_max_tokens = llm_constant.max_context_token_length[llm.model_name]
+        completion_max_tokens = llm.max_tokens
+        used_tokens = self.get_num_tokens_from_messages(llm, messages, **kwargs)
+        rest_tokens = llm_max_tokens - completion_max_tokens - used_tokens
+
+        return rest_tokens
+
+
+class ExceededLLMTokensLimitError(Exception):
+    pass

api/core/agent/agent/multi_dataset_router_agent.py

+from typing import Tuple, List, Any, Union, Sequence, Optional, cast
+
+from langchain.agents import OpenAIFunctionsAgent, BaseSingleActionAgent
+from langchain.callbacks.base import BaseCallbackManager
+from langchain.callbacks.manager import Callbacks
+from langchain.prompts.chat import BaseMessagePromptTemplate
+from langchain.schema import AgentAction, AgentFinish, BaseLanguageModel, SystemMessage
+from langchain.tools import BaseTool
+
+from core.tool.dataset_retriever_tool import DatasetRetrieverTool
+
+
+class MultiDatasetRouterAgent(OpenAIFunctionsAgent):
+    """
+    An Multi Dataset Retrieve Agent driven by Router.
+    """
+
+    def should_use_agent(self, query: str):
+        """
+        return should use agent
+
+        :param query:
+        :return:
+        """
+        return True
+
+    def plan(
+        self,
+        intermediate_steps: List[Tuple[AgentAction, str]],
+        callbacks: Callbacks = None,
+        **kwargs: Any,
+    ) -> Union[AgentAction, AgentFinish]:
+        """Given input, decided what to do.
+
+        Args:
+            intermediate_steps: Steps the LLM has taken to date, along with observations
+            **kwargs: User inputs.
+
+        Returns:
+            Action specifying what tool to use.
+        """
+        if len(self.tools) == 0:
+            return AgentFinish(return_values={"output": ''}, log='')
+        elif len(self.tools) == 1:
+            tool = next(iter(self.tools))
+            tool = cast(DatasetRetrieverTool, tool)
+            rst = tool.run(tool_input={'dataset_id': tool.dataset_id, 'query': kwargs['input']})
+            return AgentFinish(return_values={"output": rst}, log=rst)
+
+        if intermediate_steps:
+            _, observation = intermediate_steps[-1]
+            return AgentFinish(return_values={"output": observation}, log=observation)
+
+        return super().plan(intermediate_steps, callbacks, **kwargs)
+
+    async def aplan(
+            self,
+            intermediate_steps: List[Tuple[AgentAction, str]],
+            callbacks: Callbacks = None,
+            **kwargs: Any,
+    ) -> Union[AgentAction, AgentFinish]:
+        raise NotImplementedError()
+
+    @classmethod
+    def from_llm_and_tools(
+            cls,
+            llm: BaseLanguageModel,
+            tools: Sequence[BaseTool],
+            callback_manager: Optional[BaseCallbackManager] = None,
+            extra_prompt_messages: Optional[List[BaseMessagePromptTemplate]] = None,
+            system_message: Optional[SystemMessage] = SystemMessage(
+                content="You are a helpful AI assistant."
+            ),
+            **kwargs: Any,
+    ) -> BaseSingleActionAgent:
+        llm.model_name = 'gpt-3.5-turbo'
+        return super().from_llm_and_tools(
+            llm=llm,
+            tools=tools,
+            callback_manager=callback_manager,
+            extra_prompt_messages=extra_prompt_messages,
+            system_message=system_message,
+            **kwargs,
+        )

api/core/agent/agent/openai_function_call.py

+from datetime import datetime
+from typing import List, Tuple, Any, Union, Sequence, Optional
+
+import pytz
+from langchain.agents import OpenAIFunctionsAgent, BaseSingleActionAgent
+from langchain.agents.openai_functions_agent.base import _parse_ai_message, \
+    _format_intermediate_steps
+from langchain.callbacks.base import BaseCallbackManager
+from langchain.callbacks.manager import Callbacks
+from langchain.prompts.chat import BaseMessagePromptTemplate
+from langchain.schema import AgentAction, AgentFinish, SystemMessage, BaseLanguageModel
+from langchain.tools import BaseTool
+
+from core.agent.agent.calc_token_mixin import ExceededLLMTokensLimitError
+from core.agent.agent.openai_function_call_summarize_mixin import OpenAIFunctionCallSummarizeMixin
+
+
+class AutoSummarizingOpenAIFunctionCallAgent(OpenAIFunctionsAgent, OpenAIFunctionCallSummarizeMixin):
+
+    @classmethod
+    def from_llm_and_tools(
+            cls,
+            llm: BaseLanguageModel,
+            tools: Sequence[BaseTool],
+            callback_manager: Optional[BaseCallbackManager] = None,
+            extra_prompt_messages: Optional[List[BaseMessagePromptTemplate]] = None,
+            system_message: Optional[SystemMessage] = SystemMessage(
+                content="You are a helpful AI assistant."
+            ),
+            **kwargs: Any,
+    ) -> BaseSingleActionAgent:
+        return super().from_llm_and_tools(
+            llm=llm,
+            tools=tools,
+            callback_manager=callback_manager,
+            extra_prompt_messages=extra_prompt_messages,
+            system_message=cls.get_system_message(),
+            **kwargs,
+        )
+
+    def should_use_agent(self, query: str):
+        """
+        return should use agent
+
+        :param query:
+        :return:
+        """
+        original_max_tokens = self.llm.max_tokens
+        self.llm.max_tokens = 6
+
+        prompt = self.prompt.format_prompt(input=query, agent_scratchpad=[])
+        messages = prompt.to_messages()
+
+        predicted_message = self.llm.predict_messages(
+            messages, functions=self.functions, callbacks=None
+        )
+
+        function_call = predicted_message.additional_kwargs.get("function_call", {})
+
+        self.llm.max_tokens = original_max_tokens
+
+        return True if function_call else False
+
+    def plan(
+            self,
+            intermediate_steps: List[Tuple[AgentAction, str]],
+            callbacks: Callbacks = None,
+            **kwargs: Any,
+    ) -> Union[AgentAction, AgentFinish]:
+        """Given input, decided what to do.
+
+        Args:
+            intermediate_steps: Steps the LLM has taken to date, along with observations
+            **kwargs: User inputs.
+
+        Returns:
+            Action specifying what tool to use.
+        """
+        agent_scratchpad = _format_intermediate_steps(intermediate_steps)
+        selected_inputs = {
+            k: kwargs[k] for k in self.prompt.input_variables if k != "agent_scratchpad"
+        }
+        full_inputs = dict(**selected_inputs, agent_scratchpad=agent_scratchpad)
+        prompt = self.prompt.format_prompt(**full_inputs)
+        messages = prompt.to_messages()
+
+        # summarize messages if rest_tokens < 0
+        try:
+            messages = self.summarize_messages_if_needed(self.llm, messages, functions=self.functions)
+        except ExceededLLMTokensLimitError as e:
+            return AgentFinish(return_values={"output": str(e)}, log=str(e))
+
+        predicted_message = self.llm.predict_messages(
+            messages, functions=self.functions, callbacks=callbacks
+        )
+        agent_decision = _parse_ai_message(predicted_message)
+        return agent_decision
+
+    @classmethod
+    def get_system_message(cls):
+        # get current time
+        current_time = datetime.now()
+        current_timezone = pytz.timezone('UTC')
+        current_time = current_timezone.localize(current_time)
+
+        return SystemMessage(content="You are a helpful AI assistant.\n"
+                                     "Current time: {}\n"
+                                     "Respond directly if appropriate.".format(
+            current_time.strftime("%Y-%m-%d %H:%M:%S %Z%z")))

api/core/agent/agent/openai_function_call_summarize_mixin.py

+from typing import cast, List
+
+from langchain.chat_models import ChatOpenAI
+from langchain.chat_models.openai import _convert_message_to_dict
+from langchain.memory.summary import SummarizerMixin
+from langchain.schema import SystemMessage, HumanMessage, BaseMessage, AIMessage, BaseLanguageModel
+
+from core.agent.agent.calc_token_mixin import ExceededLLMTokensLimitError, CalcTokenMixin
+
+
+class OpenAIFunctionCallSummarizeMixin(CalcTokenMixin):
+    moving_summary_buffer: str = ""
+    moving_summary_index: int = 0
+    summary_llm: BaseLanguageModel
+
+    def summarize_messages_if_needed(self, llm: BaseLanguageModel, messages: List[BaseMessage], **kwargs) -> List[BaseMessage]:
+        # calculate rest tokens and summarize previous function observation messages if rest_tokens < 0
+        rest_tokens = self.get_message_rest_tokens(llm, messages, **kwargs)
+        rest_tokens = rest_tokens - 20  # to deal with the inaccuracy of rest_tokens
+        if rest_tokens >= 0:
+            return messages
+
+        system_message = None
+        human_message = None
+        should_summary_messages = []
+        for message in messages:
+            if isinstance(message, SystemMessage):
+                system_message = message
+            elif isinstance(message, HumanMessage):
+                human_message = message
+            else:
+                should_summary_messages.append(message)
+
+        if len(should_summary_messages) > 2:
+            ai_message = should_summary_messages[-2]
+            function_message = should_summary_messages[-1]
+            should_summary_messages = should_summary_messages[self.moving_summary_index:-2]
+            self.moving_summary_index = len(should_summary_messages)
+        else:
+            error_msg = "Exceeded LLM tokens limit, stopped."
+            raise ExceededLLMTokensLimitError(error_msg)
+
+        new_messages = [system_message, human_message]
+
+        if self.moving_summary_index == 0:
+            should_summary_messages.insert(0, human_message)
+
+        summary_handler = SummarizerMixin(llm=self.summary_llm)
+        self.moving_summary_buffer = summary_handler.predict_new_summary(
+            messages=should_summary_messages,
+            existing_summary=self.moving_summary_buffer
+        )
+
+        new_messages.append(AIMessage(content=self.moving_summary_buffer))
+        new_messages.append(ai_message)
+        new_messages.append(function_message)
+
+        return new_messages
+
+    def get_num_tokens_from_messages(self, llm: BaseLanguageModel, messages: List[BaseMessage], **kwargs) -> int:
+        """Calculate num tokens for gpt-3.5-turbo and gpt-4 with tiktoken package.
+
+        Official documentation: https://github.com/openai/openai-cookbook/blob/
+        main/examples/How_to_format_inputs_to_ChatGPT_models.ipynb"""
+        llm = cast(ChatOpenAI, llm)
+        model, encoding = llm._get_encoding_model()
+        if model.startswith("gpt-3.5-turbo"):
+            # every message follows <im_start>{role/name}\n{content}<im_end>\n
+            tokens_per_message = 4
+            # if there's a name, the role is omitted
+            tokens_per_name = -1
+        elif model.startswith("gpt-4"):
+            tokens_per_message = 3
+            tokens_per_name = 1
+        else:
+            raise NotImplementedError(
+                f"get_num_tokens_from_messages() is not presently implemented "
+                f"for model {model}."
+                "See https://github.com/openai/openai-python/blob/main/chatml.md for "
+                "information on how messages are converted to tokens."
+            )
+        num_tokens = 0
+        for m in messages:
+            message = _convert_message_to_dict(m)
+            num_tokens += tokens_per_message
+            for key, value in message.items():
+                if key == "function_call":
+                    for f_key, f_value in value.items():
+                        num_tokens += len(encoding.encode(f_key))
+                        num_tokens += len(encoding.encode(f_value))
+                else:
+                    num_tokens += len(encoding.encode(value))
+
+                if key == "name":
+                    num_tokens += tokens_per_name
+        # every reply is primed with <im_start>assistant
+        num_tokens += 3
+
+        if kwargs.get('functions'):
+            for function in kwargs.get('functions'):
+                num_tokens += len(encoding.encode('name'))
+                num_tokens += len(encoding.encode(function.get("name")))
+                num_tokens += len(encoding.encode('description'))
+                num_tokens += len(encoding.encode(function.get("description")))
+                parameters = function.get("parameters")
+                num_tokens += len(encoding.encode('parameters'))
+                if 'title' in parameters:
+                    num_tokens += len(encoding.encode('title'))
+                    num_tokens += len(encoding.encode(parameters.get("title")))
+                num_tokens += len(encoding.encode('type'))
+                num_tokens += len(encoding.encode(parameters.get("type")))
+                if 'properties' in parameters:
+                    num_tokens += len(encoding.encode('properties'))
+                    for key, value in parameters.get('properties').items():
+                        num_tokens += len(encoding.encode(key))
+                        for field_key, field_value in value.items():
+                            num_tokens += len(encoding.encode(field_key))
+                            if field_key == 'enum':
+                                for enum_field in field_value:
+                                    num_tokens += 3
+                                    num_tokens += len(encoding.encode(enum_field))
+                            else:
+                                num_tokens += len(encoding.encode(field_key))
+                                num_tokens += len(encoding.encode(str(field_value)))
+                if 'required' in parameters:
+                    num_tokens += len(encoding.encode('required'))
+                    for required_field in parameters['required']:
+                        num_tokens += 3
+                        num_tokens += len(encoding.encode(required_field))
+
+        return num_tokens

api/core/agent/agent/openai_multi_function_call.py

+from datetime import datetime
+from typing import List, Tuple, Any, Union, Sequence, Optional
+
+import pytz
+from langchain.agents import BaseMultiActionAgent
+from langchain.agents.openai_functions_multi_agent.base import OpenAIMultiFunctionsAgent, _format_intermediate_steps, \
+    _parse_ai_message
+from langchain.callbacks.base import BaseCallbackManager
+from langchain.callbacks.manager import Callbacks
+from langchain.prompts.chat import BaseMessagePromptTemplate
+from langchain.schema import AgentAction, AgentFinish, SystemMessage, BaseLanguageModel
+from langchain.tools import BaseTool
+
+from core.agent.agent.calc_token_mixin import ExceededLLMTokensLimitError
+from core.agent.agent.openai_function_call_summarize_mixin import OpenAIFunctionCallSummarizeMixin
+
+
+class AutoSummarizingOpenMultiAIFunctionCallAgent(OpenAIMultiFunctionsAgent, OpenAIFunctionCallSummarizeMixin):
+
+    @classmethod
+    def from_llm_and_tools(
+            cls,
+            llm: BaseLanguageModel,
+            tools: Sequence[BaseTool],
+            callback_manager: Optional[BaseCallbackManager] = None,
+            extra_prompt_messages: Optional[List[BaseMessagePromptTemplate]] = None,
+            system_message: Optional[SystemMessage] = SystemMessage(
+                content="You are a helpful AI assistant."
+            ),
+            **kwargs: Any,
+    ) -> BaseMultiActionAgent:
+        return super().from_llm_and_tools(
+            llm=llm,
+            tools=tools,
+            callback_manager=callback_manager,
+            extra_prompt_messages=extra_prompt_messages,
+            system_message=cls.get_system_message(),
+            **kwargs,
+        )
+
+    def should_use_agent(self, query: str):
+        """
+        return should use agent
+
+        :param query:
+        :return:
+        """
+        original_max_tokens = self.llm.max_tokens
+        self.llm.max_tokens = 6
+
+        prompt = self.prompt.format_prompt(input=query, agent_scratchpad=[])
+        messages = prompt.to_messages()
+
+        predicted_message = self.llm.predict_messages(
+            messages, functions=self.functions, callbacks=None
+        )
+
+        function_call = predicted_message.additional_kwargs.get("function_call", {})
+
+        self.llm.max_tokens = original_max_tokens
+
+        return True if function_call else False
+
+    def plan(
+            self,
+            intermediate_steps: List[Tuple[AgentAction, str]],
+            callbacks: Callbacks = None,
+            **kwargs: Any,
+    ) -> Union[AgentAction, AgentFinish]:
+        """Given input, decided what to do.
+
+        Args:
+            intermediate_steps: Steps the LLM has taken to date, along with observations
+            **kwargs: User inputs.
+
+        Returns:
+            Action specifying what tool to use.
+        """
+        agent_scratchpad = _format_intermediate_steps(intermediate_steps)
+        selected_inputs = {
+            k: kwargs[k] for k in self.prompt.input_variables if k != "agent_scratchpad"
+        }
+        full_inputs = dict(**selected_inputs, agent_scratchpad=agent_scratchpad)
+        prompt = self.prompt.format_prompt(**full_inputs)
+        messages = prompt.to_messages()
+
+        # summarize messages if rest_tokens < 0
+        try:
+            messages = self.summarize_messages_if_needed(self.llm, messages, functions=self.functions)
+        except ExceededLLMTokensLimitError as e:
+            return AgentFinish(return_values={"output": str(e)}, log=str(e))
+
+        predicted_message = self.llm.predict_messages(
+            messages, functions=self.functions, callbacks=callbacks
+        )
+        agent_decision = _parse_ai_message(predicted_message)
+        return agent_decision
+
+    @classmethod
+    def get_system_message(cls):
+        # get current time
+        current_time = datetime.now()
+        current_timezone = pytz.timezone('UTC')
+        current_time = current_timezone.localize(current_time)
+
+        return SystemMessage(content="You are a helpful AI assistant.\n"
+                                     "Current time: {}\n"
+                                     "Respond directly if appropriate.".format(
+            current_time.strftime("%Y-%m-%d %H:%M:%S %Z%z")))

api/core/agent/agent/output_parser/structured_chat.py

+import json
+import re
+from typing import Union
+
+from langchain.agents.structured_chat.output_parser import StructuredChatOutputParser as LCStructuredChatOutputParser, \
+    logger
+from langchain.schema import AgentAction, AgentFinish, OutputParserException
+
+
+class StructuredChatOutputParser(LCStructuredChatOutputParser):
+    def parse(self, text: str) -> Union[AgentAction, AgentFinish]:
+        try:
+            action_match = re.search(r"```(json)?(.*?)```?", text, re.DOTALL)
+            if action_match is not None:
+                response = json.loads(action_match.group(2).strip(), strict=False)
+                if isinstance(response, list):
+                    # gpt turbo frequently ignores the directive to emit a single action
+                    logger.warning("Got multiple action responses: %s", response)
+                    response = response[0]
+                if response["action"] == "Final Answer":
+                    return AgentFinish({"output": response["action_input"]}, text)
+                else:
+                    return AgentAction(
+                        response["action"], response.get("action_input", {}), text
+                    )
+            else:
+                return AgentFinish({"output": text}, text)
+        except Exception as e:
+            raise OutputParserException(f"Could not parse LLM output: {text}") from e

api/core/agent/agent/structured_chat.py

+from typing import List, Tuple, Any, Union
+
+from langchain.agents import StructuredChatAgent
+from langchain.base_language import BaseLanguageModel
+from langchain.callbacks.manager import Callbacks
+from langchain.memory.summary import SummarizerMixin
+from langchain.schema import AgentAction, AgentFinish, AIMessage, HumanMessage
+
+from core.agent.agent.calc_token_mixin import CalcTokenMixin, ExceededLLMTokensLimitError
+
+
+class AutoSummarizingStructuredChatAgent(StructuredChatAgent, CalcTokenMixin):
+    moving_summary_buffer: str = ""
+    moving_summary_index: int = 0
+    summary_llm: BaseLanguageModel
+
+    def should_use_agent(self, query: str):
+        """
+        return should use agent
+        Using the ReACT mode to determine whether an agent is needed is costly,
+        so it's better to just use an Agent for reasoning, which is cheaper.
+
+        :param query:
+        :return:
+        """
+        return True
+
+    def plan(
+        self,
+        intermediate_steps: List[Tuple[AgentAction, str]],
+        callbacks: Callbacks = None,
+        **kwargs: Any,
+    ) -> Union[AgentAction, AgentFinish]:
+        """Given input, decided what to do.
+
+        Args:
+            intermediate_steps: Steps the LLM has taken to date,
+                along with observations
+            callbacks: Callbacks to run.
+            **kwargs: User inputs.
+
+        Returns:
+            Action specifying what tool to use.
+        """
+        full_inputs = self.get_full_inputs(intermediate_steps, **kwargs)
+
+        prompts, _ = self.llm_chain.prep_prompts(input_list=[self.llm_chain.prep_inputs(full_inputs)])
+        messages = []
+        if prompts:
+            messages = prompts[0].to_messages()
+
+        rest_tokens = self.get_message_rest_tokens(self.llm_chain.llm, messages)
+        if rest_tokens < 0:
+            full_inputs = self.summarize_messages(intermediate_steps, **kwargs)
+
+        full_output = self.llm_chain.predict(callbacks=callbacks, **full_inputs)
+        return self.output_parser.parse(full_output)
+
+    def summarize_messages(self, intermediate_steps: List[Tuple[AgentAction, str]], **kwargs):
+        if len(intermediate_steps) >= 2:
+            should_summary_intermediate_steps = intermediate_steps[self.moving_summary_index:-1]
+            should_summary_messages = [AIMessage(content=observation)
+                                       for _, observation in should_summary_intermediate_steps]
+            if self.moving_summary_index == 0:
+                should_summary_messages.insert(0, HumanMessage(content=kwargs.get("input")))
+
+            self.moving_summary_index = len(intermediate_steps)
+        else:
+            error_msg = "Exceeded LLM tokens limit, stopped."
+            raise ExceededLLMTokensLimitError(error_msg)
+
+        summary_handler = SummarizerMixin(llm=self.summary_llm)
+        if self.moving_summary_buffer and 'chat_history' in kwargs:
+            kwargs["chat_history"].pop()
+
+        self.moving_summary_buffer = summary_handler.predict_new_summary(
+            messages=should_summary_messages,
+            existing_summary=self.moving_summary_buffer
+        )
+
+        if 'chat_history' in kwargs:
+            kwargs["chat_history"].append(AIMessage(content=self.moving_summary_buffer))
+
+        return self.get_full_inputs([intermediate_steps[-1]], **kwargs)

api/core/agent/agent_executor.py

+import enum
+from typing import Union, Optional
+
+from langchain.agents import BaseSingleActionAgent, BaseMultiActionAgent
+from langchain.base_language import BaseLanguageModel
+from langchain.callbacks.manager import Callbacks
+from langchain.memory.chat_memory import BaseChatMemory
+from langchain.tools import BaseTool
+from pydantic import BaseModel, Extra
+
+from core.agent.agent.multi_dataset_router_agent import MultiDatasetRouterAgent
+from core.agent.agent.openai_function_call import AutoSummarizingOpenAIFunctionCallAgent
+from core.agent.agent.openai_multi_function_call import AutoSummarizingOpenMultiAIFunctionCallAgent
+from core.agent.agent.output_parser.structured_chat import StructuredChatOutputParser
+from core.agent.agent.structured_chat import AutoSummarizingStructuredChatAgent
+from langchain.agents import AgentExecutor as LCAgentExecutor
+
+from core.tool.dataset_retriever_tool import DatasetRetrieverTool
+
+
+class PlanningStrategy(str, enum.Enum):
+    ROUTER = 'router'
+    REACT = 'react'
+    FUNCTION_CALL = 'function_call'
+    MULTI_FUNCTION_CALL = 'multi_function_call'
+
+
+class AgentConfiguration(BaseModel):
+    strategy: PlanningStrategy
+    llm: BaseLanguageModel
+    tools: list[BaseTool]
+    summary_llm: BaseLanguageModel
+    memory: Optional[BaseChatMemory] = None
+    callbacks: Callbacks = None
+    max_iterations: int = 6
+    max_execution_time: Optional[float] = None
+    early_stopping_method: str = "generate"
+    # `generate` will continue to complete the last inference after reaching the iteration limit or request time limit
+
+    class Config:
+        """Configuration for this pydantic object."""
+
+        extra = Extra.forbid
+        arbitrary_types_allowed = True
+
+
+class AgentExecuteResult(BaseModel):
+    strategy: PlanningStrategy
+    output: str
+    configuration: AgentConfiguration
+
+
+class AgentExecutor:
+    def __init__(self, configuration: AgentConfiguration):
+        self.configuration = configuration
+        self.agent = self._init_agent()
+
+    def _init_agent(self) -> Union[BaseSingleActionAgent | BaseMultiActionAgent]:
+        if self.configuration.strategy == PlanningStrategy.REACT:
+            agent = AutoSummarizingStructuredChatAgent.from_llm_and_tools(
+                llm=self.configuration.llm,
+                tools=self.configuration.tools,
+                output_parser=StructuredChatOutputParser(),
+                summary_llm=self.configuration.summary_llm,
+                verbose=True
+            )
+        elif self.configuration.strategy == PlanningStrategy.FUNCTION_CALL:
+            agent = AutoSummarizingOpenAIFunctionCallAgent.from_llm_and_tools(
+                llm=self.configuration.llm,
+                tools=self.configuration.tools,
+                extra_prompt_messages=self.configuration.memory.buffer if self.configuration.memory else None,  # used for read chat histories memory
+                summary_llm=self.configuration.summary_llm,
+                verbose=True
+            )
+        elif self.configuration.strategy == PlanningStrategy.MULTI_FUNCTION_CALL:
+            agent = AutoSummarizingOpenMultiAIFunctionCallAgent.from_llm_and_tools(
+                llm=self.configuration.llm,
+                tools=self.configuration.tools,
+                extra_prompt_messages=self.configuration.memory.buffer if self.configuration.memory else None,  # used for read chat histories memory
+                summary_llm=self.configuration.summary_llm,
+                verbose=True
+            )
+        elif self.configuration.strategy == PlanningStrategy.ROUTER:
+            self.configuration.tools = [t for t in self.configuration.tools if isinstance(t, DatasetRetrieverTool)]
+            agent = MultiDatasetRouterAgent.from_llm_and_tools(
+                llm=self.configuration.llm,
+                tools=self.configuration.tools,
+                extra_prompt_messages=self.configuration.memory.buffer if self.configuration.memory else None,
+                verbose=True
+            )
+        else:
+            raise NotImplementedError(f"Unknown Agent Strategy: {self.configuration.strategy}")
+
+        return agent
+
+    def should_use_agent(self, query: str) -> bool:
+        return self.agent.should_use_agent(query)
+
+    def run(self, query: str) -> AgentExecuteResult:
+        agent_executor = LCAgentExecutor.from_agent_and_tools(
+            agent=self.agent,
+            tools=self.configuration.tools,
+            memory=self.configuration.memory,
+            max_iterations=self.configuration.max_iterations,
+            max_execution_time=self.configuration.max_execution_time,
+            early_stopping_method=self.configuration.early_stopping_method,
+            callbacks=self.configuration.callbacks
+        )
+
+        output = agent_executor.run(query)
+
+        return AgentExecuteResult(
+            output=output,
+            strategy=self.configuration.strategy,
+            configuration=self.configuration
+        )

api/core/callback_handler/agent_loop_gather_callback_handler.py

+import json
 import logging
 import time
 
 from typing import Any, Dict, List, Union, Optional
 
+from langchain.agents import openai_functions_agent, openai_functions_multi_agent
 from langchain.callbacks.base import BaseCallbackHandler
-from langchain.schema import AgentAction, AgentFinish, LLMResult
+from langchain.schema import AgentAction, AgentFinish, LLMResult, ChatGeneration
 
 from core.callback_handler.entity.agent_loop import AgentLoop
 from core.conversation_message_task import ConversationMessageTask
@@ -20,6 +22,7 @@ class AgentLoopGatherCallbackHandler(BaseCallbackHandler):
         self.conversation_message_task = conversation_message_task
         self._agent_loops = []
         self._current_loop = None
+        self._message_agent_thought = None
         self.current_chain = None
 
     @property
@@ -29,6 +32,7 @@ class AgentLoopGatherCallbackHandler(BaseCallbackHandler):
     def clear_agent_loops(self) -> None:
         self._agent_loops = []
         self._current_loop = None
+        self._message_agent_thought = None
 
     @property
     def always_verbose(self) -> bool:
@@ -61,9 +65,21 @@ class AgentLoopGatherCallbackHandler(BaseCallbackHandler):
         # kwargs={}
         if self._current_loop and self._current_loop.status == 'llm_started':
             self._current_loop.status = 'llm_end'
-            self._current_loop.prompt_tokens = response.llm_output['token_usage']['prompt_tokens']
-            self._current_loop.completion = response.generations[0][0].text
-            self._current_loop.completion_tokens = response.llm_output['token_usage']['completion_tokens']
+            if response.llm_output:
+                self._current_loop.prompt_tokens = response.llm_output['token_usage']['prompt_tokens']
+            completion_generation = response.generations[0][0]
+            if isinstance(completion_generation, ChatGeneration):
+                completion_message = completion_generation.message
+                if 'function_call' in completion_message.additional_kwargs:
+                    self._current_loop.completion \
+                        = json.dumps({'function_call': completion_message.additional_kwargs['function_call']})
+                else:
+                    self._current_loop.completion = response.generations[0][0].text
+            else:
+                self._current_loop.completion = completion_generation.text
+
+            if response.llm_output:
+                self._current_loop.completion_tokens = response.llm_output['token_usage']['completion_tokens']
 
     def on_llm_error(
         self, error: Union[Exception, KeyboardInterrupt], **kwargs: Any
@@ -71,6 +87,7 @@ class AgentLoopGatherCallbackHandler(BaseCallbackHandler):
         logging.error(error)
         self._agent_loops = []
         self._current_loop = None
+        self._message_agent_thought = None
 
     def on_tool_start(
         self,
@@ -89,15 +106,29 @@ class AgentLoopGatherCallbackHandler(BaseCallbackHandler):
     ) -> Any:
         """Run on agent action."""
         tool = action.tool
-        tool_input = action.tool_input
-        action_name_position = action.log.index("\nAction:") + 1 if action.log else -1
-        thought = action.log[:action_name_position].strip() if action.log else ''
+        tool_input = json.dumps({"input": action.tool_input}
+                                if isinstance(action.tool_input, str) else action.tool_input)
+        completion = None
+        if isinstance(action, openai_functions_agent.base._FunctionsAgentAction) \
+                or isinstance(action, openai_functions_multi_agent.base._FunctionsAgentAction):
+            thought = action.log.strip()
+            completion = json.dumps({'function_call': action.message_log[0].additional_kwargs['function_call']})
+        else:
+            action_name_position = action.log.index("Action:") if action.log else -1
+            thought = action.log[:action_name_position].strip() if action.log else ''
 
         if self._current_loop and self._current_loop.status == 'llm_end':
             self._current_loop.status = 'agent_action'
             self._current_loop.thought = thought
             self._current_loop.tool_name = tool
             self._current_loop.tool_input = tool_input
+            if completion is not None:
+                self._current_loop.completion = completion
+
+            self._message_agent_thought = self.conversation_message_task.on_agent_start(
+                self.current_chain,
+                self._current_loop
+            )
 
     def on_tool_end(
         self,
@@ -120,10 +151,13 @@ class AgentLoopGatherCallbackHandler(BaseCallbackHandler):
             self._current_loop.completed_at = time.perf_counter()
             self._current_loop.latency = self._current_loop.completed_at - self._current_loop.started_at
 
-            self.conversation_message_task.on_agent_end(self.current_chain, self.model_name, self._current_loop)
+            self.conversation_message_task.on_agent_end(
+                self._message_agent_thought, self.model_name, self._current_loop
+            )
 
             self._agent_loops.append(self._current_loop)
             self._current_loop = None
+            self._message_agent_thought = None
 
     def on_tool_error(
         self, error: Union[Exception, KeyboardInterrupt], **kwargs: Any
@@ -132,6 +166,7 @@ class AgentLoopGatherCallbackHandler(BaseCallbackHandler):
         logging.error(error)
         self._agent_loops = []
         self._current_loop = None
+        self._message_agent_thought = None
 
     def on_agent_finish(self, finish: AgentFinish, **kwargs: Any) -> Any:
         """Run on agent end."""
@@ -141,10 +176,18 @@ class AgentLoopGatherCallbackHandler(BaseCallbackHandler):
             self._current_loop.completed = True
             self._current_loop.completed_at = time.perf_counter()
             self._current_loop.latency = self._current_loop.completed_at - self._current_loop.started_at
+            self._current_loop.thought = '[DONE]'
+            self._message_agent_thought = self.conversation_message_task.on_agent_start(
+                self.current_chain,
+                self._current_loop
+            )
 
-            self.conversation_message_task.on_agent_end(self.current_chain, self.model_name, self._current_loop)
+            self.conversation_message_task.on_agent_end(
+                self._message_agent_thought, self.model_name, self._current_loop
+            )
 
             self._agent_loops.append(self._current_loop)
             self._current_loop = None
+            self._message_agent_thought = None
         elif not self._current_loop and self._agent_loops:
             self._agent_loops[-1].status = 'agent_finish'

api/core/callback_handler/dataset_tool_callback_handler.py

+import json
 import logging
 
 from typing import Any, Dict, List, Union, Optional
@@ -43,8 +44,9 @@ class DatasetToolCallbackHandler(BaseCallbackHandler):
         input_str: str,
         **kwargs: Any,
     ) -> None:
-        tool_name = serialized.get('name')
-        dataset_id = tool_name[len("dataset-"):]
+        # tool_name = serialized.get('name')
+        input_dict = json.loads(input_str.replace("'", "\""))
+        dataset_id = input_dict.get('dataset_id')
         self.conversation_message_task.on_dataset_query_end(DatasetQueryObj(dataset_id=dataset_id, query=input_str))
 
     def on_tool_end(

api/core/callback_handler/entity/agent_loop.py

@@ -10,9 +10,9 @@ class AgentLoop(BaseModel):
     tool_output: str = None
 
     prompt: str = None
-    prompt_tokens: int = None
+    prompt_tokens: int = 0
     completion: str = None
-    completion_tokens: int = None
+    completion_tokens: int = 0
 
     latency: float = None
 

api/core/callback_handler/llm_callback_handler.py

 import logging
 import time
-from typing import Any, Dict, List, Union, Optional
+from typing import Any, Dict, List, Union
 
 from langchain.callbacks.base import BaseCallbackHandler
-from langchain.schema import AgentAction, AgentFinish, LLMResult, HumanMessage, AIMessage, SystemMessage, BaseMessage
+from langchain.schema import LLMResult, BaseMessage, BaseLanguageModel
 
 from core.callback_handler.entity.llm_message import LLMMessage
 from core.conversation_message_task import ConversationMessageTask, ConversationTaskStoppedException
-from core.llm.streamable_chat_open_ai import StreamableChatOpenAI
-from core.llm.streamable_open_ai import StreamableOpenAI
 
 
 class LLMCallbackHandler(BaseCallbackHandler):
     raise_error: bool = True
 
-    def __init__(self, llm: Union[StreamableOpenAI, StreamableChatOpenAI],
+    def __init__(self, llm: BaseLanguageModel,
                  conversation_message_task: ConversationMessageTask):
         self.llm = llm
         self.llm_message = LLMMessage()
@@ -69,9 +67,8 @@ class LLMCallbackHandler(BaseCallbackHandler):
         if not self.conversation_message_task.streaming:
             self.conversation_message_task.append_message_text(response.generations[0][0].text)
             self.llm_message.completion = response.generations[0][0].text
-            self.llm_message.completion_tokens = response.llm_output['token_usage']['completion_tokens']
-        else:
-            self.llm_message.completion_tokens = self.llm.get_num_tokens(self.llm_message.completion)
+
+        self.llm_message.completion_tokens = self.llm.get_num_tokens(self.llm_message.completion)
 
         self.conversation_message_task.save_message(self.llm_message)
 

api/core/callback_handler/main_chain_gather_callback_handler.py

@@ -20,15 +20,13 @@ class MainChainGatherCallbackHandler(BaseCallbackHandler):
         self._current_chain_result = None
         self._current_chain_message = None
         self.conversation_message_task = conversation_message_task
-        self.agent_loop_gather_callback_handler = AgentLoopGatherCallbackHandler(
-            llm_constant.agent_model_name,
-            conversation_message_task
-        )
+        self.agent_callback = None
 
     def clear_chain_results(self) -> None:
         self._current_chain_result = None
         self._current_chain_message = None
-        self.agent_loop_gather_callback_handler.current_chain = None
+        if self.agent_callback:
+            self.agent_callback.current_chain = None
 
     @property
     def always_verbose(self) -> bool:
@@ -58,7 +56,8 @@ class MainChainGatherCallbackHandler(BaseCallbackHandler):
                     started_at=time.perf_counter()
                 )
                 self._current_chain_message = self.conversation_message_task.init_chain(self._current_chain_result)
-                self.agent_loop_gather_callback_handler.current_chain = self._current_chain_message
+                if self.agent_callback:
+                    self.agent_callback.current_chain = self._current_chain_message
 
     def on_chain_end(self, outputs: Dict[str, Any], **kwargs: Any) -> None:
         """Print out that we finished a chain."""

api/core/chain/chain_builder.py

-from typing import Optional
-
-from core.callback_handler.std_out_callback_handler import DifyStdOutCallbackHandler
-from core.chain.sensitive_word_avoidance_chain import SensitiveWordAvoidanceChain
-from core.chain.tool_chain import ToolChain
-
-
-class ChainBuilder:
-    @classmethod
-    def to_tool_chain(cls, tool, **kwargs) -> ToolChain:
-        return ToolChain(
-            tool=tool,
-            input_key=kwargs.get('input_key', 'input'),
-            output_key=kwargs.get('output_key', 'tool_output'),
-            callbacks=[DifyStdOutCallbackHandler()]
-        )
-
-    @classmethod
-    def to_sensitive_word_avoidance_chain(cls, tool_config: dict, **kwargs) -> Optional[
-        SensitiveWordAvoidanceChain]:
-        sensitive_words = tool_config.get("words", "")
-        if tool_config.get("enabled", False) \
-                and sensitive_words:
-            return SensitiveWordAvoidanceChain(
-                sensitive_words=sensitive_words.split(","),
-                canned_response=tool_config.get("canned_response", ''),
-                output_key="sensitive_word_avoidance_output",
-                callbacks=[DifyStdOutCallbackHandler()],
-                **kwargs
-            )
-
-        return None

api/core/chain/llm_router_chain.py

-"""Base classes for LLM-powered router chains."""
-from __future__ import annotations
-
-from typing import Any, Dict, List, Optional, Type, cast, NamedTuple
-
-from langchain.base_language import BaseLanguageModel
-from langchain.callbacks.manager import CallbackManagerForChainRun
-from langchain.chains.base import Chain
-from pydantic import root_validator
-
-from langchain.chains import LLMChain
-from langchain.prompts import BasePromptTemplate
-from langchain.schema import BaseOutputParser, OutputParserException
-
-from libs.json_in_md_parser import parse_and_check_json_markdown
-
-
-class Route(NamedTuple):
-    destination: Optional[str]
-    next_inputs: Dict[str, Any]
-
-
-class LLMRouterChain(Chain):
-    """A router chain that uses an LLM chain to perform routing."""
-
-    llm_chain: LLMChain
-    """LLM chain used to perform routing"""
-
-    @root_validator()
-    def validate_prompt(cls, values: dict) -> dict:
-        prompt = values["llm_chain"].prompt
-        if prompt.output_parser is None:
-            raise ValueError(
-                "LLMRouterChain requires base llm_chain prompt to have an output"
-                " parser that converts LLM text output to a dictionary with keys"
-                " 'destination' and 'next_inputs'. Received a prompt with no output"
-                " parser."
-            )
-        return values
-
-    @property
-    def input_keys(self) -> List[str]:
-        """Will be whatever keys the LLM chain prompt expects.
-
-        :meta private:
-        """
-        return self.llm_chain.input_keys
-
-    def _validate_outputs(self, outputs: Dict[str, Any]) -> None:
-        super()._validate_outputs(outputs)
-        if not isinstance(outputs["next_inputs"], dict):
-            raise ValueError
-
-    def _call(
-            self,
-            inputs: Dict[str, Any],
-            run_manager: Optional[CallbackManagerForChainRun] = None,
-    ) -> Dict[str, Any]:
-        output = cast(
-            Dict[str, Any],
-            self.llm_chain.predict_and_parse(**inputs),
-        )
-        return output
-
-    @classmethod
-    def from_llm(
-        cls, llm: BaseLanguageModel, prompt: BasePromptTemplate, **kwargs: Any
-    ) -> LLMRouterChain:
-        """Convenience constructor."""
-        llm_chain = LLMChain(llm=llm, prompt=prompt)
-        return cls(llm_chain=llm_chain, **kwargs)
-
-    @property
-    def output_keys(self) -> List[str]:
-        return ["destination", "next_inputs"]
-
-    def route(self, inputs: Dict[str, Any]) -> Route:
-        result = self(inputs)
-        return Route(result["destination"], result["next_inputs"])
-
-
-class RouterOutputParser(BaseOutputParser[Dict[str, str]]):
-    """Parser for output of router chain int he multi-prompt chain."""
-
-    default_destination: str = "DEFAULT"
-    next_inputs_type: Type = str
-    next_inputs_inner_key: str = "input"
-
-    def parse(self, text: str) -> Dict[str, Any]:
-        try:
-            expected_keys = ["destination", "next_inputs"]
-            parsed = parse_and_check_json_markdown(text, expected_keys)
-            if not isinstance(parsed["destination"], str):
-                raise ValueError("Expected 'destination' to be a string.")
-            if not isinstance(parsed["next_inputs"], self.next_inputs_type):
-                raise ValueError(
-                    f"Expected 'next_inputs' to be {self.next_inputs_type}."
-                )
-            parsed["next_inputs"] = {self.next_inputs_inner_key: parsed["next_inputs"]}
-            if (
-                parsed["destination"].strip().lower()
-                == self.default_destination.lower()
-            ):
-                parsed["destination"] = None
-            else:
-                parsed["destination"] = parsed["destination"].strip()
-            return parsed
-        except Exception as e:
-            raise OutputParserException(
-                f"Parsing text\n{text}\n of llm router raised following error:\n{e}"
-            )

api/core/chain/main_chain_builder.py

-from typing import Optional, List, cast
-
-from langchain.chains import SequentialChain
-from langchain.chains.base import Chain
-from langchain.memory.chat_memory import BaseChatMemory
-
-from core.callback_handler.main_chain_gather_callback_handler import MainChainGatherCallbackHandler
-from core.callback_handler.std_out_callback_handler import DifyStdOutCallbackHandler
-from core.chain.chain_builder import ChainBuilder
-from core.chain.multi_dataset_router_chain import MultiDatasetRouterChain
-from core.conversation_message_task import ConversationMessageTask
-from extensions.ext_database import db
-from models.dataset import Dataset
-
-
-class MainChainBuilder:
-    @classmethod
-    def to_langchain_components(cls, tenant_id: str, agent_mode: dict, memory: Optional[BaseChatMemory],
-                                rest_tokens: int,
-                                conversation_message_task: ConversationMessageTask):
-        first_input_key = "input"
-        final_output_key = "output"
-
-        chains = []
-
-        chain_callback_handler = MainChainGatherCallbackHandler(conversation_message_task)
-
-        # agent mode
-        tool_chains, chains_output_key = cls.get_agent_chains(
-            tenant_id=tenant_id,
-            agent_mode=agent_mode,
-            rest_tokens=rest_tokens,
-            memory=memory,
-            conversation_message_task=conversation_message_task
-        )
-        chains += tool_chains
-
-        if chains_output_key:
-            final_output_key = chains_output_key
-
-        if len(chains) == 0:
-            return None
-
-        for chain in chains:
-            chain = cast(Chain, chain)
-            chain.callbacks.append(chain_callback_handler)
-
-        # build main chain
-        overall_chain = SequentialChain(
-            chains=chains,
-            input_variables=[first_input_key],
-            output_variables=[final_output_key],
-            memory=memory,  # only for use the memory prompt input key
-        )
-
-        return overall_chain
-
-    @classmethod
-    def get_agent_chains(cls, tenant_id: str, agent_mode: dict,
-                         rest_tokens: int,
-                         memory: Optional[BaseChatMemory],
-                         conversation_message_task: ConversationMessageTask):
-        # agent mode
-        chains = []
-        if agent_mode and agent_mode.get('enabled'):
-            tools = agent_mode.get('tools', [])
-
-            pre_fixed_chains = []
-            # agent_tools = []
-            datasets = []
-            for tool in tools:
-                tool_type = list(tool.keys())[0]
-                tool_config = list(tool.values())[0]
-                if tool_type == 'sensitive-word-avoidance':
-                    chain = ChainBuilder.to_sensitive_word_avoidance_chain(tool_config)
-                    if chain:
-                        pre_fixed_chains.append(chain)
-                elif tool_type == "dataset":
-                    # get dataset from dataset id
-                    dataset = db.session.query(Dataset).filter(
-                        Dataset.tenant_id == tenant_id,
-                        Dataset.id == tool_config.get("id")
-                    ).first()
-
-                    if dataset:
-                        datasets.append(dataset)
-
-            # add pre-fixed chains
-            chains += pre_fixed_chains
-
-            if len(datasets) > 0:
-                # tool to chain
-                multi_dataset_router_chain = MultiDatasetRouterChain.from_datasets(
-                    tenant_id=tenant_id,
-                    datasets=datasets,
-                    conversation_message_task=conversation_message_task,
-                    rest_tokens=rest_tokens,
-                    callbacks=[DifyStdOutCallbackHandler()]
-                )
-                chains.append(multi_dataset_router_chain)
-
-        final_output_key = cls.get_chains_output_key(chains)
-
-        return chains, final_output_key
-
-    @classmethod
-    def get_chains_output_key(cls, chains: List[Chain]):
-        if len(chains) > 0:
-            return chains[-1].output_keys[0]
-        return None

api/core/chain/multi_dataset_router_chain.py

-import math
-import re
-from typing import Mapping, List, Dict, Any, Optional
-
-from langchain import PromptTemplate
-from langchain.callbacks.manager import CallbackManagerForChainRun
-from langchain.chains.base import Chain
-from pydantic import Extra
-
-from core.callback_handler.dataset_tool_callback_handler import DatasetToolCallbackHandler
-from core.callback_handler.std_out_callback_handler import DifyStdOutCallbackHandler
-from core.chain.llm_router_chain import LLMRouterChain, RouterOutputParser
-from core.conversation_message_task import ConversationMessageTask
-from core.llm.llm_builder import LLMBuilder
-from core.tool.dataset_index_tool import DatasetTool
-from models.dataset import Dataset, DatasetProcessRule
-
-DEFAULT_K = 2
-CONTEXT_TOKENS_PERCENT = 0.3
-MULTI_PROMPT_ROUTER_TEMPLATE = """
-Given a raw text input to a language model select the model prompt best suited for \
-the input. You will be given the names of the available prompts and a description of \
-what the prompt is best suited for. You may also revise the original input if you \
-think that revising it will ultimately lead to a better response from the language \
-model.
-
-<< FORMATTING >>
-Return a markdown code snippet with a JSON object formatted to look like, \
-no any other string out of markdown code snippet:
-```json
-{{{{
-    "destination": string \\ name of the prompt to use or "DEFAULT"
-    "next_inputs": string \\ a potentially modified version of the original input
-}}}}
-```
-
-REMEMBER: "destination" MUST be one of the candidate prompt names specified below OR \
-it can be "DEFAULT" if the input is not well suited for any of the candidate prompts.
-REMEMBER: "next_inputs" can just be the original input if you don't think any \
-modifications are needed.
-
-<< CANDIDATE PROMPTS >>
-{destinations}
-
-<< INPUT >>
-{{input}}
-
-<< OUTPUT >>
-"""
-
-
-class MultiDatasetRouterChain(Chain):
-    """Use a single chain to route an input to one of multiple candidate chains."""
-
-    router_chain: LLMRouterChain
-    """Chain for deciding a destination chain and the input to it."""
-    dataset_tools: Mapping[str, DatasetTool]
-    """Map of name to candidate chains that inputs can be routed to."""
-
-    class Config:
-        """Configuration for this pydantic object."""
-
-        extra = Extra.forbid
-        arbitrary_types_allowed = True
-
-    @property
-    def input_keys(self) -> List[str]:
-        """Will be whatever keys the router chain prompt expects.
-
-        :meta private:
-        """
-        return self.router_chain.input_keys
-
-    @property
-    def output_keys(self) -> List[str]:
-        return ["text"]
-
-    @classmethod
-    def from_datasets(
-            cls,
-            tenant_id: str,
-            datasets: List[Dataset],
-            conversation_message_task: ConversationMessageTask,
-            rest_tokens: int,
-            **kwargs: Any,
-    ):
-        """Convenience constructor for instantiating from destination prompts."""
-        llm = LLMBuilder.to_llm(
-            tenant_id=tenant_id,
-            model_name='gpt-3.5-turbo',
-            temperature=0,
-            max_tokens=1024,
-            callbacks=[DifyStdOutCallbackHandler()]
-        )
-
-        destinations = ["[[{}]]: {}".format(d.id, d.description.replace('\n', ' ') if d.description
-                        else ('useful for when you want to answer queries about the ' + d.name))
-                        for d in datasets]
-        destinations_str = "\n".join(destinations)
-        router_template = MULTI_PROMPT_ROUTER_TEMPLATE.format(
-            destinations=destinations_str
-        )
-
-        router_prompt = PromptTemplate(
-            template=router_template,
-            input_variables=["input"],
-            output_parser=RouterOutputParser(),
-        )
-
-        router_chain = LLMRouterChain.from_llm(llm, router_prompt)
-        dataset_tools = {}
-        for dataset in datasets:
-            # fulfill description when it is empty
-            if dataset.available_document_count == 0 or dataset.available_document_count == 0:
-                continue
-
-            description = dataset.description
-            if not description:
-                description = 'useful for when you want to answer queries about the ' + dataset.name
-
-            k = cls._dynamic_calc_retrieve_k(dataset, rest_tokens)
-            if k == 0:
-                continue
-
-            dataset_tool = DatasetTool(
-                name=f"dataset-{dataset.id}",
-                description=description,
-                k=k,
-                dataset=dataset,
-                callbacks=[DatasetToolCallbackHandler(conversation_message_task), DifyStdOutCallbackHandler()]
-            )
-
-            dataset_tools[str(dataset.id)] = dataset_tool
-
-        return cls(
-            router_chain=router_chain,
-            dataset_tools=dataset_tools,
-            **kwargs,
-        )
-
-    @classmethod
-    def _dynamic_calc_retrieve_k(cls, dataset: Dataset, rest_tokens: int) -> int:
-        processing_rule = dataset.latest_process_rule
-        if not processing_rule:
-            return DEFAULT_K
-
-        if processing_rule.mode == "custom":
-            rules = processing_rule.rules_dict
-            if not rules:
-                return DEFAULT_K
-
-            segmentation = rules["segmentation"]
-            segment_max_tokens = segmentation["max_tokens"]
-        else:
-            segment_max_tokens = DatasetProcessRule.AUTOMATIC_RULES['segmentation']['max_tokens']
-
-        # when rest_tokens is less than default context tokens
-        if rest_tokens < segment_max_tokens * DEFAULT_K:
-            return rest_tokens // segment_max_tokens
-
-        context_limit_tokens = math.floor(rest_tokens * CONTEXT_TOKENS_PERCENT)
-
-        # when context_limit_tokens is less than default context tokens, use default_k
-        if context_limit_tokens <= segment_max_tokens * DEFAULT_K:
-            return DEFAULT_K
-
-        # Expand the k value when there's still some room left in the 30% rest tokens space
-        return context_limit_tokens // segment_max_tokens
-
-    def _call(
-        self,
-        inputs: Dict[str, Any],
-        run_manager: Optional[CallbackManagerForChainRun] = None,
-    ) -> Dict[str, Any]:
-        if len(self.dataset_tools) == 0:
-            return {"text": ''}
-        elif len(self.dataset_tools) == 1:
-            return {"text": next(iter(self.dataset_tools.values())).run(inputs['input'])}
-
-        route = self.router_chain.route(inputs)
-
-        destination = ''
-        if route.destination:
-            pattern = r'\b[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\b'
-            match = re.search(pattern, route.destination, re.IGNORECASE)
-            if match:
-                destination = match.group()
-
-        if not destination:
-            return {"text": ''}
-        elif destination in self.dataset_tools:
-            return {"text": self.dataset_tools[destination].run(
-                route.next_inputs['input']
-            )}
-        else:
-            raise ValueError(
-                f"Received invalid destination chain name '{destination}'"
-            )

api/core/chain/tool_chain.py

-from typing import List, Dict, Optional, Any
-
-from langchain.callbacks.manager import CallbackManagerForChainRun, AsyncCallbackManagerForChainRun
-from langchain.chains.base import Chain
-from langchain.tools import BaseTool
-
-
-class ToolChain(Chain):
-    input_key: str = "input"  #: :meta private:
-    output_key: str = "output"  #: :meta private:
-
-    tool: BaseTool
-
-    @property
-    def _chain_type(self) -> str:
-        return "tool_chain"
-
-    @property
-    def input_keys(self) -> List[str]:
-        """Expect input key.
-
-        :meta private:
-        """
-        return [self.input_key]
-
-    @property
-    def output_keys(self) -> List[str]:
-        """Return output key.
-
-        :meta private:
-        """
-        return [self.output_key]
-
-    def _call(
-            self,
-            inputs: Dict[str, Any],
-            run_manager: Optional[CallbackManagerForChainRun] = None,
-    ) -> Dict[str, Any]:
-        input = inputs[self.input_key]
-        output = self.tool.run(input, self.verbose)
-        return {self.output_key: output}
-
-    async def _acall(
-            self,
-            inputs: Dict[str, Any],
-            run_manager: Optional[AsyncCallbackManagerForChainRun] = None,
-    ) -> Dict[str, Any]:
-        """Run the logic of this chain and return the output."""
-        input = inputs[self.input_key]
-        output = await self.tool.arun(input, self.verbose)
-        return {self.output_key: output}

api/core/completion.py

@@ -8,20 +8,21 @@ from langchain.llms import BaseLLM
 from langchain.schema import BaseMessage, HumanMessage
 from requests.exceptions import ChunkedEncodingError
 
+from core.agent.agent_executor import AgentExecuteResult, PlanningStrategy
+from core.callback_handler.main_chain_gather_callback_handler import MainChainGatherCallbackHandler
 from core.constant import llm_constant
 from core.callback_handler.llm_callback_handler import LLMCallbackHandler
 from core.callback_handler.std_out_callback_handler import DifyStreamingStdOutCallbackHandler, \
     DifyStdOutCallbackHandler
 from core.conversation_message_task import ConversationMessageTask, ConversationTaskStoppedException
 from core.llm.error import LLMBadRequestError
+from core.llm.fake import FakeLLM
 from core.llm.llm_builder import LLMBuilder
-from core.chain.main_chain_builder import MainChainBuilder
 from core.llm.streamable_chat_open_ai import StreamableChatOpenAI
 from core.llm.streamable_open_ai import StreamableOpenAI
 from core.memory.read_only_conversation_token_db_buffer_shared_memory import \
     ReadOnlyConversationTokenDBBufferSharedMemory
-from core.memory.read_only_conversation_token_db_string_buffer_shared_memory import \
-    ReadOnlyConversationTokenDBStringBufferSharedMemory
+from core.orchestrator_rule_parser import OrchestratorRuleParser
 from core.prompt.prompt_builder import PromptBuilder
 from core.prompt.prompt_template import JinjaPromptTemplate
 from core.prompt.prompts import MORE_LIKE_THIS_GENERATE_PROMPT
@@ -69,18 +70,33 @@ class Completion:
             streaming=streaming
         )
 
-        # build main chain include agent
-        main_chain = MainChainBuilder.to_langchain_components(
+        chain_callback = MainChainGatherCallbackHandler(conversation_message_task)
+
+        # init orchestrator rule parser
+        orchestrator_rule_parser = OrchestratorRuleParser(
             tenant_id=app.tenant_id,
-            agent_mode=app_model_config.agent_mode_dict,
+            app_model_config=app_model_config
+        )
+
+        # parse sensitive_word_avoidance_chain
+        sensitive_word_avoidance_chain = orchestrator_rule_parser.to_sensitive_word_avoidance_chain([chain_callback])
+        if sensitive_word_avoidance_chain:
+            query = sensitive_word_avoidance_chain.run(query)
+
+        # get agent executor
+        agent_executor = orchestrator_rule_parser.to_agent_executor(
+            conversation_message_task=conversation_message_task,
+            memory=memory,
             rest_tokens=rest_tokens_for_context_and_memory,
-            memory=ReadOnlyConversationTokenDBStringBufferSharedMemory(memory=memory) if memory else None,
-            conversation_message_task=conversation_message_task
+            chain_callback=chain_callback
         )
 
-        chain_output = ''
-        if main_chain:
-            chain_output = main_chain.run(query)
+        # run agent executor
+        agent_execute_result = None
+        if agent_executor:
+            should_use_agent = agent_executor.should_use_agent(query)
+            if should_use_agent:
+                agent_execute_result = agent_executor.run(query)
 
         # run the final llm
         try:
@@ -90,7 +106,7 @@ class Completion:
                 app_model_config=app_model_config,
                 query=query,
                 inputs=inputs,
-                chain_output=chain_output,
+                agent_execute_result=agent_execute_result,
                 conversation_message_task=conversation_message_task,
                 memory=memory,
                 streaming=streaming
@@ -105,9 +121,20 @@ class Completion:
 
     @classmethod
     def run_final_llm(cls, tenant_id: str, mode: str, app_model_config: AppModelConfig, query: str, inputs: dict,
-                      chain_output: str,
+                      agent_execute_result: Optional[AgentExecuteResult],
                       conversation_message_task: ConversationMessageTask,
                       memory: Optional[ReadOnlyConversationTokenDBBufferSharedMemory], streaming: bool):
+        # When no extra pre prompt is specified,
+        # the output of the agent can be used directly as the main output content without calling LLM again
+        if not app_model_config.pre_prompt and agent_execute_result \
+                and agent_execute_result.strategy != PlanningStrategy.ROUTER:
+            final_llm = FakeLLM(response=agent_execute_result.output,
+                                origin_llm=agent_execute_result.configuration.llm,
+                                streaming=streaming)
+            final_llm.callbacks = cls.get_llm_callbacks(final_llm, streaming, conversation_message_task)
+            response = final_llm.generate([[HumanMessage(content=query)]])
+            return response
+
         final_llm = LLMBuilder.to_llm_from_model(
             tenant_id=tenant_id,
             model=app_model_config.model_dict,
@@ -122,7 +149,7 @@ class Completion:
             pre_prompt=app_model_config.pre_prompt,
             query=query,
             inputs=inputs,
-            chain_output=chain_output,
+            agent_execute_result=agent_execute_result,
             memory=memory
         )
 
@@ -142,16 +169,9 @@ class Completion:
     @classmethod
     def get_main_llm_prompt(cls, mode: str, llm: BaseLanguageModel, model: dict,
                             pre_prompt: str, query: str, inputs: dict,
-                            chain_output: Optional[str],
+                            agent_execute_result: Optional[AgentExecuteResult],
                             memory: Optional[ReadOnlyConversationTokenDBBufferSharedMemory]) -> \
             Tuple[Union[str | List[BaseMessage]], Optional[List[str]]]:
-        # disable template string in query
-        # query_params = JinjaPromptTemplate.from_template(template=query).input_variables
-        # if query_params:
-        #     for query_param in query_params:
-        #         if query_param not in inputs:
-        #             inputs[query_param] = '{{' + query_param + '}}'
-
         if mode == 'completion':
             prompt_template = JinjaPromptTemplate.from_template(
                 template=("""Use the following context as your learned knowledge, inside <context></context> XML tags.
@@ -165,18 +185,13 @@ When answer to user:
 - If you don't know when you are not sure, ask for clarification. 
 Avoid mentioning that you obtained the information from the context.
 And answer according to the language of the user's question.
-""" if chain_output else "")
+""" if agent_execute_result else "")
                          + (pre_prompt + "\n" if pre_prompt else "")
                          + "{{query}}\n"
             )
 
-            if chain_output:
-                inputs['context'] = chain_output
-                # context_params = JinjaPromptTemplate.from_template(template=chain_output).input_variables
-                # if context_params:
-                #     for context_param in context_params:
-                #         if context_param not in inputs:
-                #             inputs[context_param] = '{{' + context_param + '}}'
+            if agent_execute_result:
+                inputs['context'] = agent_execute_result.output
 
             prompt_inputs = {k: inputs[k] for k in prompt_template.input_variables if k in inputs}
             prompt_content = prompt_template.format(
@@ -206,8 +221,8 @@ And answer according to the language of the user's question.
                 if pre_prompt_inputs:
                     human_inputs.update(pre_prompt_inputs)
 
-            if chain_output:
-                human_inputs['context'] = chain_output
+            if agent_execute_result:
+                human_inputs['context'] = agent_execute_result.output
                 human_message_prompt += """Use the following context as your learned knowledge, inside <context></context> XML tags.
 
 <context>
@@ -240,14 +255,6 @@ And answer according to the language of the user's question.
                               - max_tokens - curr_message_tokens
                 rest_tokens = max(rest_tokens, 0)
                 histories = cls.get_history_messages_from_memory(memory, rest_tokens)
-
-                # disable template string in query
-                # histories_params = JinjaPromptTemplate.from_template(template=histories).input_variables
-                # if histories_params:
-                #     for histories_param in histories_params:
-                #         if histories_param not in human_inputs:
-                #             human_inputs[histories_param] = '{{' + histories_param + '}}'
-
                 human_message_prompt += "\n\n" if human_message_prompt else ""
                 human_message_prompt += "Here is the chat histories between human and assistant, " \
                                         "inside <histories></histories> XML tags.\n\n<histories>"
@@ -266,7 +273,7 @@ And answer according to the language of the user's question.
             return messages, ['\nHuman:']
 
     @classmethod
-    def get_llm_callbacks(cls, llm: Union[StreamableOpenAI, StreamableChatOpenAI],
+    def get_llm_callbacks(cls, llm: BaseLanguageModel,
                           streaming: bool,
                           conversation_message_task: ConversationMessageTask) -> List[BaseCallbackHandler]:
         llm_callback_handler = LLMCallbackHandler(llm, conversation_message_task)
@@ -277,8 +284,7 @@ And answer according to the language of the user's question.
 
     @classmethod
     def get_history_messages_from_memory(cls, memory: ReadOnlyConversationTokenDBBufferSharedMemory,
-                                         max_token_limit: int) -> \
-            str:
+                                         max_token_limit: int) -> str:
         """Get memory messages."""
         memory.max_token_limit = max_token_limit
         memory_key = memory.memory_variables[0]
@@ -329,7 +335,7 @@ And answer according to the language of the user's question.
             pre_prompt=app_model_config.pre_prompt,
             query=query,
             inputs=inputs,
-            chain_output=None,
+            agent_execute_result=None,
             memory=None
         )
 
@@ -379,6 +385,7 @@ And answer according to the language of the user's question.
             query=message.query,
             inputs=message.inputs,
             chain_output=None,
+            agent_execute_result=None,
             memory=None
         )
 

api/core/conversation_message_task.py

@@ -52,7 +52,7 @@ class ConversationMessageTask:
             message=self.message,
             conversation=self.conversation,
             chain_pub=False,  # disabled currently
-            agent_thought_pub=False  # disabled currently
+            agent_thought_pub=True
         )
 
     def init(self):
@@ -69,6 +69,7 @@ class ConversationMessageTask:
                 "suggested_questions": self.app_model_config.suggested_questions_list,
                 "suggested_questions_after_answer": self.app_model_config.suggested_questions_after_answer_dict,
                 "more_like_this": self.app_model_config.more_like_this_dict,
+                "sensitive_word_avoidance": self.app_model_config.sensitive_word_avoidance_dict,
                 "user_input_form": self.app_model_config.user_input_form_list,
             }
 
@@ -207,7 +208,28 @@ class ConversationMessageTask:
 
         self._pub_handler.pub_chain(message_chain)
 
-    def on_agent_end(self, message_chain: MessageChain, agent_model_name: str,
+    def on_agent_start(self, message_chain: MessageChain, agent_loop: AgentLoop) -> MessageAgentThought:
+        message_agent_thought = MessageAgentThought(
+            message_id=self.message.id,
+            message_chain_id=message_chain.id,
+            position=agent_loop.position,
+            thought=agent_loop.thought,
+            tool=agent_loop.tool_name,
+            tool_input=agent_loop.tool_input,
+            message=agent_loop.prompt,
+            answer=agent_loop.completion,
+            created_by_role=('account' if isinstance(self.user, Account) else 'end_user'),
+            created_by=self.user.id
+        )
+
+        db.session.add(message_agent_thought)
+        db.session.flush()
+
+        self._pub_handler.pub_agent_thought(message_agent_thought)
+
+        return message_agent_thought
+
+    def on_agent_end(self, message_agent_thought: MessageAgentThought, agent_model_name: str,
                      agent_loop: AgentLoop):
         agent_message_unit_price = llm_constant.model_prices[agent_model_name]['prompt']
         agent_answer_unit_price = llm_constant.model_prices[agent_model_name]['completion']
@@ -222,34 +244,18 @@ class ConversationMessageTask:
             agent_answer_unit_price
         )
 
-        message_agent_loop = MessageAgentThought(
-            message_id=self.message.id,
-            message_chain_id=message_chain.id,
-            position=agent_loop.position,
-            thought=agent_loop.thought,
-            tool=agent_loop.tool_name,
-            tool_input=agent_loop.tool_input,
-            observation=agent_loop.tool_output,
-            tool_process_data='',  # currently not support
-            message=agent_loop.prompt,
-            message_token=loop_message_tokens,
-            message_unit_price=agent_message_unit_price,
-            answer=agent_loop.completion,
-            answer_token=loop_answer_tokens,
-            answer_unit_price=agent_answer_unit_price,
-            latency=agent_loop.latency,
-            tokens=agent_loop.prompt_tokens + agent_loop.completion_tokens,
-            total_price=loop_total_price,
-            currency=llm_constant.model_currency,
-            created_by_role=('account' if isinstance(self.user, Account) else 'end_user'),
-            created_by=self.user.id
-        )
-
-        db.session.add(message_agent_loop)
+        message_agent_thought.observation = agent_loop.tool_output
+        message_agent_thought.tool_process_data = ''  # currently not support
+        message_agent_thought.message_token = loop_message_tokens
+        message_agent_thought.message_unit_price = agent_message_unit_price
+        message_agent_thought.answer_token = loop_answer_tokens
+        message_agent_thought.answer_unit_price = agent_answer_unit_price
+        message_agent_thought.latency = agent_loop.latency
+        message_agent_thought.tokens = agent_loop.prompt_tokens + agent_loop.completion_tokens
+        message_agent_thought.total_price = loop_total_price
+        message_agent_thought.currency = llm_constant.model_currency
         db.session.flush()
 
-        self._pub_handler.pub_agent_thought(message_agent_loop)
-
     def on_dataset_query_end(self, dataset_query_obj: DatasetQueryObj):
         dataset_query = DatasetQuery(
             dataset_id=dataset_query_obj.dataset_id,
@@ -346,16 +352,14 @@ class PubHandler:
             content = {
                 'event': 'agent_thought',
                 'data': {
+                    'id': message_agent_thought.id,
                     'task_id': self._task_id,
                     'message_id': self._message.id,
                     'chain_id': message_agent_thought.message_chain_id,
-                    'agent_thought_id': message_agent_thought.id,
                     'position': message_agent_thought.position,
                     'thought': message_agent_thought.thought,
                     'tool': message_agent_thought.tool,
                     'tool_input': message_agent_thought.tool_input,
-                    'observation': message_agent_thought.observation,
-                    'answer': message_agent_thought.answer,
                     'mode': self._conversation.mode,
                     'conversation_id': self._conversation.id
                 }

api/core/data_loader/file_extractor.py

 import tempfile
 from pathlib import Path
-from typing import List, Union
+from typing import List, Union, Optional
 
+import requests
 from langchain.document_loaders import TextLoader, Docx2txtLoader
 from langchain.schema import Document
 
@@ -13,6 +14,9 @@ from core.data_loader.loader.pdf import PdfLoader
 from extensions.ext_storage import storage
 from models.model import UploadFile
 
+SUPPORT_URL_CONTENT_TYPES = ['application/pdf', 'text/plain']
+USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
+
 
 class FileExtractor:
     @classmethod
@@ -22,22 +26,41 @@ class FileExtractor:
             file_path = f"{temp_dir}/{next(tempfile._get_candidate_names())}{suffix}"
             storage.download(upload_file.key, file_path)
 
-            input_file = Path(file_path)
-            delimiter = '\n'
-            if input_file.suffix == '.xlsx':
-                loader = ExcelLoader(file_path)
-            elif input_file.suffix == '.pdf':
-                loader = PdfLoader(file_path, upload_file=upload_file)
-            elif input_file.suffix in ['.md', '.markdown']:
-                loader = MarkdownLoader(file_path, autodetect_encoding=True)
-            elif input_file.suffix in ['.htm', '.html']:
-                loader = HTMLLoader(file_path)
-            elif input_file.suffix == '.docx':
-                loader = Docx2txtLoader(file_path)
-            elif input_file.suffix == '.csv':
-                loader = CSVLoader(file_path, autodetect_encoding=True)
-            else:
-                # txt
-                loader = TextLoader(file_path, autodetect_encoding=True)
-
-            return delimiter.join([document.page_content for document in loader.load()]) if return_text else loader.load()
+            return cls.load_from_file(file_path, return_text, upload_file)
+
+    @classmethod
+    def load_from_url(cls, url: str, return_text: bool = False) -> Union[List[Document] | str]:
+        response = requests.get(url, headers={
+            "User-Agent": USER_AGENT
+        })
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            suffix = Path(url).suffix
+            file_path = f"{temp_dir}/{next(tempfile._get_candidate_names())}{suffix}"
+            with open(file_path, 'wb') as file:
+                file.write(response.content)
+
+            return cls.load_from_file(file_path, return_text)
+
+    @classmethod
+    def load_from_file(cls, file_path: str, return_text: bool = False,
+                       upload_file: Optional[UploadFile] = None) -> Union[List[Document] | str]:
+        input_file = Path(file_path)
+        delimiter = '\n'
+        if input_file.suffix == '.xlsx':
+            loader = ExcelLoader(file_path)
+        elif input_file.suffix == '.pdf':
+            loader = PdfLoader(file_path, upload_file=upload_file)
+        elif input_file.suffix in ['.md', '.markdown']:
+            loader = MarkdownLoader(file_path, autodetect_encoding=True)
+        elif input_file.suffix in ['.htm', '.html']:
+            loader = HTMLLoader(file_path)
+        elif input_file.suffix == '.docx':
+            loader = Docx2txtLoader(file_path)
+        elif input_file.suffix == '.csv':
+            loader = CSVLoader(file_path, autodetect_encoding=True)
+        else:
+            # txt
+            loader = TextLoader(file_path, autodetect_encoding=True)
+
+        return delimiter.join([document.page_content for document in loader.load()]) if return_text else loader.load()

api/core/llm/fake.py

+import time
+from typing import List, Optional, Any, Mapping
+
+from langchain.callbacks.manager import CallbackManagerForLLMRun
+from langchain.chat_models.base import SimpleChatModel
+from langchain.schema import BaseMessage, ChatResult, AIMessage, ChatGeneration, BaseLanguageModel
+
+
+class FakeLLM(SimpleChatModel):
+    """Fake ChatModel for testing purposes."""
+
+    streaming: bool = False
+    """Whether to stream the results or not."""
+    response: str
+    origin_llm: Optional[BaseLanguageModel] = None
+
+    @property
+    def _llm_type(self) -> str:
+        return "fake-chat-model"
+
+    def _call(
+        self,
+        messages: List[BaseMessage],
+        stop: Optional[List[str]] = None,
+        run_manager: Optional[CallbackManagerForLLMRun] = None,
+        **kwargs: Any,
+    ) -> str:
+        """First try to lookup in queries, else return 'foo' or 'bar'."""
+        return self.response
+
+    @property
+    def _identifying_params(self) -> Mapping[str, Any]:
+        return {"response": self.response}
+
+    def get_num_tokens(self, text: str) -> int:
+        return self.origin_llm.get_num_tokens(text) if self.origin_llm else 0
+
+    def _generate(
+        self,
+        messages: List[BaseMessage],
+        stop: Optional[List[str]] = None,
+        run_manager: Optional[CallbackManagerForLLMRun] = None,
+        **kwargs: Any,
+    ) -> ChatResult:
+        output_str = self._call(messages, stop=stop, run_manager=run_manager, **kwargs)
+        if self.streaming:
+            for token in output_str:
+                if run_manager:
+                    run_manager.on_llm_new_token(token)
+                    time.sleep(0.01)
+
+        message = AIMessage(content=output_str)
+        generation = ChatGeneration(message=message)
+        llm_output = {"token_usage": {
+            'prompt_tokens': 0,
+            'completion_tokens': 0,
+            'total_tokens': 0,
+        }}
+        return ChatResult(generations=[generation], llm_output=llm_output)

api/core/llm/streamable_chat_anthropic.py

@@ -3,6 +3,7 @@ from typing import List, Optional, Any, Dict
 from langchain.callbacks.manager import Callbacks
 from langchain.chat_models import ChatAnthropic
 from langchain.schema import BaseMessage, LLMResult
+from pydantic import root_validator
 
 from core.llm.wrappers.anthropic_wrapper import handle_anthropic_exceptions
 
@@ -12,6 +13,12 @@ class StreamableChatAnthropic(ChatAnthropic):
     Wrapper around Anthropic's large language model.
     """
 
+    @root_validator()
+    def prepare_params(cls, values: Dict) -> Dict:
+        values['model_name'] = values.get('model')
+        values['max_tokens'] = values.get('max_tokens_to_sample')
+        return values
+
     @handle_anthropic_exceptions
     def generate(
             self,

api/core/orchestrator_rule_parser.py

+import math
+from typing import Optional
+
+from langchain import WikipediaAPIWrapper
+from langchain.callbacks.manager import Callbacks
+from langchain.memory.chat_memory import BaseChatMemory
+from langchain.tools import BaseTool, Tool, WikipediaQueryRun
+
+from core.agent.agent_executor import AgentExecutor, PlanningStrategy, AgentConfiguration
+from core.callback_handler.agent_loop_gather_callback_handler import AgentLoopGatherCallbackHandler
+from core.callback_handler.dataset_tool_callback_handler import DatasetToolCallbackHandler
+from core.callback_handler.main_chain_gather_callback_handler import MainChainGatherCallbackHandler
+from core.callback_handler.std_out_callback_handler import DifyStdOutCallbackHandler
+from core.chain.sensitive_word_avoidance_chain import SensitiveWordAvoidanceChain
+from core.conversation_message_task import ConversationMessageTask
+from core.llm.llm_builder import LLMBuilder
+from core.llm.streamable_chat_open_ai import StreamableChatOpenAI
+from core.tool.dataset_retriever_tool import DatasetRetrieverTool
+from core.tool.provider.serpapi_provider import SerpAPIToolProvider
+from core.tool.serpapi_wrapper import OptimizedSerpAPIWrapper
+from core.tool.web_reader_tool import WebReaderTool
+from extensions.ext_database import db
+from models.dataset import Dataset, DatasetProcessRule
+from models.model import AppModelConfig
+
+
+class OrchestratorRuleParser:
+    """Parse the orchestrator rule to entities."""
+
+    def __init__(self, tenant_id: str, app_model_config: AppModelConfig):
+        self.tenant_id = tenant_id
+        self.app_model_config = app_model_config
+
+    def to_agent_executor(self, conversation_message_task: ConversationMessageTask, memory: Optional[BaseChatMemory],
+                       rest_tokens: int, chain_callback: MainChainGatherCallbackHandler) \
+            -> Optional[AgentExecutor]:
+        if not self.app_model_config.agent_mode_dict:
+            return None
+
+        agent_mode_config = self.app_model_config.agent_mode_dict
+        model_dict = self.app_model_config.model_dict
+
+        chain = None
+        if agent_mode_config and agent_mode_config.get('enabled'):
+            tool_configs = agent_mode_config.get('tools', [])
+            agent_model_name = model_dict.get('name', 'gpt-4')
+
+            # add agent callback to record agent thoughts
+            agent_callback = AgentLoopGatherCallbackHandler(
+                model_name=agent_model_name,
+                conversation_message_task=conversation_message_task
+            )
+
+            chain_callback.agent_callback = agent_callback
+
+            agent_llm = LLMBuilder.to_llm(
+                tenant_id=self.tenant_id,
+                model_name=agent_model_name,
+                temperature=0,
+                max_tokens=1500,
+                callbacks=[agent_callback, DifyStdOutCallbackHandler()]
+            )
+
+            planning_strategy = PlanningStrategy(agent_mode_config.get('strategy', 'router'))
+
+            # only OpenAI chat model support function call, use ReACT instead
+            if not isinstance(agent_llm, StreamableChatOpenAI) \
+                    and planning_strategy in [PlanningStrategy.FUNCTION_CALL, PlanningStrategy.MULTI_FUNCTION_CALL]:
+                planning_strategy = PlanningStrategy.REACT
+
+            summary_llm = LLMBuilder.to_llm(
+                tenant_id=self.tenant_id,
+                model_name=agent_model_name,
+                temperature=0,
+                max_tokens=500,
+                callbacks=[DifyStdOutCallbackHandler()]
+            )
+
+            tools = self.to_tools(
+                tool_configs=tool_configs,
+                conversation_message_task=conversation_message_task,
+                rest_tokens=rest_tokens,
+                callbacks=[agent_callback, DifyStdOutCallbackHandler()]
+            )
+
+            if len(tools) == 0:
+                return None
+
+            agent_configuration = AgentConfiguration(
+                strategy=planning_strategy,
+                llm=agent_llm,
+                tools=tools,
+                summary_llm=summary_llm,
+                memory=memory,
+                callbacks=[chain_callback, agent_callback],
+                max_iterations=6,
+                max_execution_time=None,
+                early_stopping_method="generate"
+            )
+
+            return AgentExecutor(agent_configuration)
+
+        return chain
+
+    def to_sensitive_word_avoidance_chain(self, callbacks: Callbacks = None, **kwargs) \
+            -> Optional[SensitiveWordAvoidanceChain]:
+        """
+        Convert app sensitive word avoidance config to chain
+
+        :param kwargs:
+        :return:
+        """
+        if not self.app_model_config.sensitive_word_avoidance_dict:
+            return None
+
+        sensitive_word_avoidance_config = self.app_model_config.sensitive_word_avoidance_dict
+        sensitive_words = sensitive_word_avoidance_config.get("words", "")
+        if sensitive_word_avoidance_config.get("enabled", False) and sensitive_words:
+            return SensitiveWordAvoidanceChain(
+                sensitive_words=sensitive_words.split(","),
+                canned_response=sensitive_word_avoidance_config.get("canned_response", ''),
+                output_key="sensitive_word_avoidance_output",
+                callbacks=callbacks,
+                **kwargs
+            )
+
+        return None
+
+    def to_tools(self, tool_configs: list, conversation_message_task: ConversationMessageTask,
+                 rest_tokens: int, callbacks: Callbacks = None) -> list[BaseTool]:
+        """
+        Convert app agent tool configs to tools
+
+        :param rest_tokens:
+        :param tool_configs: app agent tool configs
+        :param conversation_message_task:
+        :param callbacks:
+        :return:
+        """
+        tools = []
+        for tool_config in tool_configs:
+            tool_type = list(tool_config.keys())[0]
+            tool_val = list(tool_config.values())[0]
+            if not tool_val.get("enabled") or tool_val.get("enabled") is not True:
+                continue
+
+            tool = None
+            if tool_type == "dataset":
+                tool = self.to_dataset_retriever_tool(tool_val, conversation_message_task, rest_tokens)
+            elif tool_type == "web_reader":
+                tool = self.to_web_reader_tool()
+            elif tool_type == "google_search":
+                tool = self.to_google_search_tool()
+            elif tool_type == "wikipedia":
+                tool = self.to_wikipedia_tool()
+
+            if tool:
+                tool.callbacks = callbacks
+                tools.append(tool)
+
+        return tools
+
+    def to_dataset_retriever_tool(self, tool_config: dict, conversation_message_task: ConversationMessageTask,
+                                  rest_tokens: int) \
+            -> Optional[BaseTool]:
+        """
+        A dataset tool is a tool that can be used to retrieve information from a dataset
+        :param rest_tokens:
+        :param tool_config:
+        :param conversation_message_task:
+        :return:
+        """
+        # get dataset from dataset id
+        dataset = db.session.query(Dataset).filter(
+            Dataset.tenant_id == self.tenant_id,
+            Dataset.id == tool_config.get("id")
+        ).first()
+
+        if dataset and dataset.available_document_count == 0 and dataset.available_document_count == 0:
+            return None
+
+        k = self._dynamic_calc_retrieve_k(dataset, rest_tokens)
+        tool = DatasetRetrieverTool.from_dataset(
+            dataset=dataset,
+            k=k,
+            callbacks=[DatasetToolCallbackHandler(conversation_message_task), DifyStdOutCallbackHandler()]
+        )
+
+        return tool
+
+    def to_web_reader_tool(self) -> Optional[BaseTool]:
+        """
+        A tool for reading web pages
+
+        :return:
+        """
+        summary_llm = LLMBuilder.to_llm(
+            tenant_id=self.tenant_id,
+            model_name="gpt-3.5-turbo-16k",
+            temperature=0,
+            max_tokens=500,
+            callbacks=[DifyStdOutCallbackHandler()]
+        )
+
+        tool = WebReaderTool(
+            llm=summary_llm,
+            max_chunk_length=4000,
+            continue_reading=True,
+            callbacks=[DifyStdOutCallbackHandler()]
+        )
+
+        return tool
+
+    def to_google_search_tool(self) -> Optional[BaseTool]:
+        tool_provider = SerpAPIToolProvider(tenant_id=self.tenant_id)
+        func_kwargs = tool_provider.credentials_to_func_kwargs()
+        if not func_kwargs:
+            return None
+
+        tool = Tool(
+            name="google_search",
+            description="A tool for performing a Google search and extracting snippets and webpages "
+                        "when you need to search for something you don't know or when your information "
+                        "is not up to date."
+                        "Input should be a search query.",
+            func=OptimizedSerpAPIWrapper(**func_kwargs).run,
+            callbacks=[DifyStdOutCallbackHandler()]
+        )
+
+        return tool
+
+    def to_wikipedia_tool(self) -> Optional[BaseTool]:
+        return WikipediaQueryRun(
+            name="wikipedia",
+            api_wrapper=WikipediaAPIWrapper(doc_content_chars_max=4000),
+            callbacks=[DifyStdOutCallbackHandler()]
+        )
+
+    @classmethod
+    def _dynamic_calc_retrieve_k(cls, dataset: Dataset, rest_tokens: int) -> int:
+        DEFAULT_K = 2
+        CONTEXT_TOKENS_PERCENT = 0.3
+        processing_rule = dataset.latest_process_rule
+        if not processing_rule:
+            return DEFAULT_K
+
+        if processing_rule.mode == "custom":
+            rules = processing_rule.rules_dict
+            if not rules:
+                return DEFAULT_K
+
+            segmentation = rules["segmentation"]
+            segment_max_tokens = segmentation["max_tokens"]
+        else:
+            segment_max_tokens = DatasetProcessRule.AUTOMATIC_RULES['segmentation']['max_tokens']
+
+        # when rest_tokens is less than default context tokens
+        if rest_tokens < segment_max_tokens * DEFAULT_K:
+            return rest_tokens // segment_max_tokens
+
+        context_limit_tokens = math.floor(rest_tokens * CONTEXT_TOKENS_PERCENT)
+
+        # when context_limit_tokens is less than default context tokens, use default_k
+        if context_limit_tokens <= segment_max_tokens * DEFAULT_K:
+            return DEFAULT_K
+
+        # Expand the k value when there's still some room left in the 30% rest tokens space
+        return context_limit_tokens // segment_max_tokens

api/core/tool/dataset_index_tool.py

-from flask import current_app
-from langchain.embeddings import OpenAIEmbeddings
-from langchain.tools import BaseTool
-
-from core.callback_handler.index_tool_callback_handler import DatasetIndexToolCallbackHandler
-from core.embedding.cached_embedding import CacheEmbedding
-from core.index.keyword_table_index.keyword_table_index import KeywordTableIndex, KeywordTableConfig
-from core.index.vector_index.vector_index import VectorIndex
-from core.llm.llm_builder import LLMBuilder
-from models.dataset import Dataset
-
-
-class DatasetTool(BaseTool):
-    """Tool for querying a Dataset."""
-
-    dataset: Dataset
-    k: int = 2
-
-    def _run(self, tool_input: str) -> str:
-        if self.dataset.indexing_technique == "economy":
-            # use keyword table query
-            kw_table_index = KeywordTableIndex(
-                dataset=self.dataset,
-                config=KeywordTableConfig(
-                    max_keywords_per_chunk=5
-                )
-            )
-
-            documents = kw_table_index.search(tool_input, search_kwargs={'k': self.k})
-        else:
-            model_credentials = LLMBuilder.get_model_credentials(
-                tenant_id=self.dataset.tenant_id,
-                model_provider=LLMBuilder.get_default_provider(self.dataset.tenant_id, 'text-embedding-ada-002'),
-                model_name='text-embedding-ada-002'
-            )
-
-            embeddings = CacheEmbedding(OpenAIEmbeddings(
-                **model_credentials
-            ))
-
-            vector_index = VectorIndex(
-                dataset=self.dataset,
-                config=current_app.config,
-                embeddings=embeddings
-            )
-
-            documents = vector_index.search(
-                tool_input,
-                search_type='similarity',
-                search_kwargs={
-                    'k': self.k
-                }
-            )
-
-            hit_callback = DatasetIndexToolCallbackHandler(self.dataset.id)
-            hit_callback.on_tool_end(documents)
-
-        return str("\n".join([document.page_content for document in documents]))
-
-    async def _arun(self, tool_input: str) -> str:
-        model_credentials = LLMBuilder.get_model_credentials(
-            tenant_id=self.dataset.tenant_id,
-            model_provider=LLMBuilder.get_default_provider(self.dataset.tenant_id, 'text-embedding-ada-002'),
-            model_name='text-embedding-ada-002'
-        )
-
-        embeddings = CacheEmbedding(OpenAIEmbeddings(
-            **model_credentials
-        ))
-
-        vector_index = VectorIndex(
-            dataset=self.dataset,
-            config=current_app.config,
-            embeddings=embeddings
-        )
-
-        documents = await vector_index.asearch(
-            tool_input,
-            search_type='similarity',
-            search_kwargs={
-                'k': 10
-            }
-        )
-
-        hit_callback = DatasetIndexToolCallbackHandler(self.dataset.id)
-        hit_callback.on_tool_end(documents)
-        return str("\n".join([document.page_content for document in documents]))

api/core/tool/dataset_retriever_tool.py

+import re
+from typing import Type
+
+from flask import current_app
+from langchain.embeddings import OpenAIEmbeddings
+from langchain.tools import BaseTool
+from pydantic import Field, BaseModel
+
+from core.callback_handler.index_tool_callback_handler import DatasetIndexToolCallbackHandler
+from core.embedding.cached_embedding import CacheEmbedding
+from core.index.keyword_table_index.keyword_table_index import KeywordTableIndex, KeywordTableConfig
+from core.index.vector_index.vector_index import VectorIndex
+from core.llm.llm_builder import LLMBuilder
+from extensions.ext_database import db
+from models.dataset import Dataset
+
+
+class DatasetRetrieverToolInput(BaseModel):
+    dataset_id: str = Field(..., description="ID of dataset to be queried. MUST be UUID format.")
+    query: str = Field(..., description="Query for the dataset to be used to retrieve the dataset.")
+
+
+class DatasetRetrieverTool(BaseTool):
+    """Tool for querying a Dataset."""
+    name: str = "dataset"
+    args_schema: Type[BaseModel] = DatasetRetrieverToolInput
+    description: str = "use this to retrieve a dataset. "
+
+    tenant_id: str
+    dataset_id: str
+    k: int = 3
+
+    @classmethod
+    def from_dataset(cls, dataset: Dataset, **kwargs):
+        description = dataset.description
+        if not description:
+            description = 'useful for when you want to answer queries about the ' + dataset.name
+
+        description += '\nID of dataset MUST be ' + dataset.id
+        return cls(
+            tenant_id=dataset.tenant_id,
+            dataset_id=dataset.id,
+            description=description,
+            **kwargs
+        )
+
+    def _run(self, dataset_id: str, query: str) -> str:
+        pattern = r'\b[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\b'
+        match = re.search(pattern, dataset_id, re.IGNORECASE)
+        if match:
+            dataset_id = match.group()
+
+        dataset = db.session.query(Dataset).filter(
+            Dataset.tenant_id == self.tenant_id,
+            Dataset.id == dataset_id
+        ).first()
+
+        if not dataset:
+            return f'[{self.name} failed to find dataset with id {dataset_id}.]'
+
+        if dataset.indexing_technique == "economy":
+            # use keyword table query
+            kw_table_index = KeywordTableIndex(
+                dataset=dataset,
+                config=KeywordTableConfig(
+                    max_keywords_per_chunk=5
+                )
+            )
+
+            documents = kw_table_index.search(query, search_kwargs={'k': self.k})
+        else:
+            model_credentials = LLMBuilder.get_model_credentials(
+                tenant_id=dataset.tenant_id,
+                model_provider=LLMBuilder.get_default_provider(dataset.tenant_id, 'text-embedding-ada-002'),
+                model_name='text-embedding-ada-002'
+            )
+
+            embeddings = CacheEmbedding(OpenAIEmbeddings(
+                **model_credentials
+            ))
+
+            vector_index = VectorIndex(
+                dataset=dataset,
+                config=current_app.config,
+                embeddings=embeddings
+            )
+
+            if self.k > 0:
+                documents = vector_index.search(
+                    query,
+                    search_type='similarity',
+                    search_kwargs={
+                        'k': self.k
+                    }
+                )
+            else:
+                documents = []
+
+            hit_callback = DatasetIndexToolCallbackHandler(dataset.id)
+            hit_callback.on_tool_end(documents)
+
+        return str("\n".join([document.page_content for document in documents]))
+
+    async def _arun(self, tool_input: str) -> str:
+        raise NotImplementedError()

api/core/tool/provider/base.py

+import base64
+from abc import ABC, abstractmethod
+from typing import Optional
+
+from extensions.ext_database import db
+from libs import rsa
+from models.account import Tenant
+from models.tool import ToolProvider, ToolProviderName
+
+
+class BaseToolProvider(ABC):
+    def __init__(self, tenant_id: str):
+        self.tenant_id = tenant_id
+
+    @abstractmethod
+    def get_provider_name(self) -> ToolProviderName:
+        raise NotImplementedError
+
+    @abstractmethod
+    def encrypt_credentials(self, credentials: dict) -> Optional[dict]:
+        raise NotImplementedError
+
+    @abstractmethod
+    def get_credentials(self, obfuscated: bool = False) -> Optional[dict]:
+        raise NotImplementedError
+
+    @abstractmethod
+    def credentials_to_func_kwargs(self) -> Optional[dict]:
+        raise NotImplementedError
+
+    @abstractmethod
+    def credentials_validate(self, credentials: dict):
+        raise NotImplementedError
+
+    def get_provider(self, must_enabled: bool = False) -> Optional[ToolProvider]:
+        """
+        Returns the Provider instance for the given tenant_id and tool_name.
+        """
+        query = db.session.query(ToolProvider).filter(
+            ToolProvider.tenant_id == self.tenant_id,
+            ToolProvider.tool_name == self.get_provider_name().value
+        )
+
+        if must_enabled:
+            query = query.filter(ToolProvider.is_enabled == True)
+
+        return query.first()
+
+    def encrypt_token(self, token) -> str:
+        tenant = db.session.query(Tenant).filter(Tenant.id == self.tenant_id).first()
+        encrypted_token = rsa.encrypt(token, tenant.encrypt_public_key)
+        return base64.b64encode(encrypted_token).decode()
+
+    def decrypt_token(self, token: str, obfuscated: bool = False) -> str:
+        token = rsa.decrypt(base64.b64decode(token), self.tenant_id)
+
+        if obfuscated:
+            return self._obfuscated_token(token)
+
+        return token
+
+    def _obfuscated_token(self, token: str) -> str:
+        return token[:6] + '*' * (len(token) - 8) + token[-2:]

api/core/tool/provider/errors.py

+class ToolValidateFailedError(Exception):
+    description = "Tool Provider Validate failed"

api/core/tool/provider/serpapi_provider.py

+from typing import Optional
+
+from core.tool.provider.base import BaseToolProvider
+from core.tool.provider.errors import ToolValidateFailedError
+from core.tool.serpapi_wrapper import OptimizedSerpAPIWrapper
+from models.tool import ToolProviderName
+
+
+class SerpAPIToolProvider(BaseToolProvider):
+    def get_provider_name(self) -> ToolProviderName:
+        """
+        Returns the name of the provider.
+
+        :return:
+        """
+        return ToolProviderName.SERPAPI
+
+    def get_credentials(self, obfuscated: bool = False) -> Optional[dict]:
+        """
+        Returns the credentials for SerpAPI as a dictionary.
+
+        :param obfuscated: obfuscate credentials if True
+        :return:
+        """
+        tool_provider = self.get_provider(must_enabled=True)
+        if not tool_provider:
+            return None
+
+        credentials = tool_provider.credentials
+        if not credentials:
+            return None
+
+        if credentials.get('api_key'):
+            credentials['api_key'] = self.decrypt_token(credentials.get('api_key'), obfuscated)
+
+        return credentials
+
+    def credentials_to_func_kwargs(self) -> Optional[dict]:
+        """
+        Returns the credentials function kwargs as a dictionary.
+
+        :return:
+        """
+        credentials = self.get_credentials()
+        if not credentials:
+            return None
+
+        return {
+            'serpapi_api_key': credentials.get('api_key')
+        }
+
+    def credentials_validate(self, credentials: dict):
+        """
+        Validates the given credentials.
+
+        :param credentials:
+        :return:
+        """
+        if 'api_key' not in credentials or not credentials.get('api_key'):
+            raise ToolValidateFailedError("SerpAPI api_key is required.")
+
+        api_key = credentials.get('api_key')
+
+        try:
+            OptimizedSerpAPIWrapper(serpapi_api_key=api_key).run(query='test')
+        except Exception as e:
+            raise ToolValidateFailedError("SerpAPI api_key is invalid. {}".format(e))
+
+    def encrypt_credentials(self, credentials: dict) -> Optional[dict]:
+        """
+        Encrypts the given credentials.
+
+        :param credentials:
+        :return:
+        """
+        credentials['api_key'] = self.encrypt_token(credentials.get('api_key'))
+        return credentials

api/core/tool/provider/tool_provider_service.py

+from typing import Optional
+
+from core.tool.provider.base import BaseToolProvider
+from core.tool.provider.serpapi_provider import SerpAPIToolProvider
+
+
+class ToolProviderService:
+
+    def __init__(self, tenant_id: str, provider_name: str):
+        self.provider = self._init_provider(tenant_id, provider_name)
+
+    def _init_provider(self, tenant_id: str, provider_name: str) -> BaseToolProvider:
+        if provider_name == 'serpapi':
+            return SerpAPIToolProvider(tenant_id)
+        else:
+            raise Exception('tool provider {} not found'.format(provider_name))
+
+    def get_credentials(self, obfuscated: bool = False) -> Optional[dict]:
+        """
+        Returns the credentials for Tool as a dictionary.
+
+        :param obfuscated:
+        :return:
+        """
+        return self.provider.get_credentials(obfuscated)
+
+    def credentials_validate(self, credentials: dict):
+        """
+        Validates the given credentials.
+
+        :param credentials:
+        :raises: ValidateFailedError
+        """
+        return self.provider.credentials_validate(credentials)
+
+    def encrypt_credentials(self, credentials: dict):
+        """
+        Encrypts the given credentials.
+
+        :param credentials:
+        :return:
+        """
+        return self.provider.encrypt_credentials(credentials)

api/core/tool/serpapi_wrapper.py

+from langchain import SerpAPIWrapper
+
+
+class OptimizedSerpAPIWrapper(SerpAPIWrapper):
+
+    @staticmethod
+    def _process_response(res: dict, num_results: int = 5) -> str:
+        """Process response from SerpAPI."""
+        if "error" in res.keys():
+            raise ValueError(f"Got error from SerpAPI: {res['error']}")
+        if "answer_box" in res.keys() and type(res["answer_box"]) == list:
+            res["answer_box"] = res["answer_box"][0]
+        if "answer_box" in res.keys() and "answer" in res["answer_box"].keys():
+            toret = res["answer_box"]["answer"]
+        elif "answer_box" in res.keys() and "snippet" in res["answer_box"].keys():
+            toret = res["answer_box"]["snippet"]
+        elif (
+            "answer_box" in res.keys()
+            and "snippet_highlighted_words" in res["answer_box"].keys()
+        ):
+            toret = res["answer_box"]["snippet_highlighted_words"][0]
+        elif (
+            "sports_results" in res.keys()
+            and "game_spotlight" in res["sports_results"].keys()
+        ):
+            toret = res["sports_results"]["game_spotlight"]
+        elif (
+            "shopping_results" in res.keys()
+            and "title" in res["shopping_results"][0].keys()
+        ):
+            toret = res["shopping_results"][:3]
+        elif (
+            "knowledge_graph" in res.keys()
+            and "description" in res["knowledge_graph"].keys()
+        ):
+            toret = res["knowledge_graph"]["description"]
+        elif 'organic_results' in res.keys() and len(res['organic_results']) > 0:
+            toret = ""
+            for result in res["organic_results"][:num_results]:
+                if "link" in result:
+                    toret += "----------------\nlink: " + result["link"] + "\n"
+                if "snippet" in result:
+                    toret += "snippet: " + result["snippet"] + "\n"
+        else:
+            toret = "No good search result found"
+        return "search result:\n" + toret

api/core/tool/web_reader_tool.py

+import hashlib
+import json
+import os
+import re
+import site
+import subprocess
+import tempfile
+import unicodedata
+from contextlib import contextmanager
+from typing import Type
+
+import requests
+from bs4 import BeautifulSoup, NavigableString, Comment, CData
+from langchain.base_language import BaseLanguageModel
+from langchain.chains.summarize import load_summarize_chain
+from langchain.schema import Document
+from langchain.text_splitter import RecursiveCharacterTextSplitter
+from langchain.tools.base import BaseTool
+from newspaper import Article
+from pydantic import BaseModel, Field
+from regex import regex
+
+from core.data_loader import file_extractor
+from core.data_loader.file_extractor import FileExtractor
+
+FULL_TEMPLATE = """
+TITLE: {title}
+AUTHORS: {authors}
+PUBLISH DATE: {publish_date}
+TOP_IMAGE_URL: {top_image}
+TEXT:
+
+{text}
+"""
+
+
+class WebReaderToolInput(BaseModel):
+    url: str = Field(..., description="URL of the website to read")
+    summary: bool = Field(
+        default=False,
+        description="When the user's question requires extracting the summarizing content of the webpage, "
+                    "set it to true."
+    )
+    cursor: int = Field(
+        default=0,
+        description="Start reading from this character."
+        "Use when the first response was truncated"
+        "and you want to continue reading the page.",
+    )
+
+
+class WebReaderTool(BaseTool):
+    """Reader tool for getting website title and contents. Gives more control than SimpleReaderTool."""
+
+    name: str = "web_reader"
+    args_schema: Type[BaseModel] = WebReaderToolInput
+    description: str = "use this to read a website. " \
+                       "If you can answer the question based on the information provided, " \
+                       "there is no need to use."
+    page_contents: str = None
+    url: str = None
+    max_chunk_length: int = 4000
+    summary_chunk_tokens: int = 4000
+    summary_chunk_overlap: int = 0
+    summary_separators: list[str] = ["\n\n", "。", ".", " ", ""]
+    continue_reading: bool = True
+    llm: BaseLanguageModel
+
+    def _run(self, url: str, summary: bool = False, cursor: int = 0) -> str:
+        if not self.page_contents or self.url != url:
+            page_contents = get_url(url)
+            self.page_contents = page_contents
+            self.url = url
+        else:
+            page_contents = self.page_contents
+
+        if summary:
+            character_splitter = RecursiveCharacterTextSplitter.from_tiktoken_encoder(
+                chunk_size=self.summary_chunk_tokens,
+                chunk_overlap=self.summary_chunk_overlap,
+                separators=self.summary_separators
+            )
+
+            texts = character_splitter.split_text(page_contents)
+            docs = [Document(page_content=t) for t in texts]
+
+            # only use first 10 docs
+            if len(docs) > 10:
+                docs = docs[:10]
+
+            chain = load_summarize_chain(self.llm, chain_type="refine", callbacks=self.callbacks)
+            page_contents = chain.run(docs)
+            # todo use cache
+        else:
+            page_contents = page_result(page_contents, cursor, self.max_chunk_length)
+
+            if self.continue_reading and len(page_contents) >= self.max_chunk_length:
+                page_contents += f"\nPAGE WAS TRUNCATED. IF YOU FIND INFORMATION THAT CAN ANSWER QUESTION " \
+                                 f"THEN DIRECT ANSWER AND STOP INVOKING web_reader TOOL, OTHERWISE USE " \
+                                 f"CURSOR={cursor+len(page_contents)} TO CONTINUE READING."
+
+        return page_contents
+
+    async def _arun(self, url: str) -> str:
+        raise NotImplementedError
+
+
+def page_result(text: str, cursor: int, max_length: int) -> str:
+    """Page through `text` and return a substring of `max_length` characters starting from `cursor`."""
+    return text[cursor: cursor + max_length]
+
+
+def get_url(url: str) -> str:
+    """Fetch URL and return the contents as a string."""
+    headers = {
+        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
+    }
+    supported_content_types = file_extractor.SUPPORT_URL_CONTENT_TYPES + ["text/html"]
+
+    head_response = requests.head(url, headers=headers, allow_redirects=True)
+
+    if head_response.status_code != 200:
+        return "URL returned status code {}.".format(head_response.status_code)
+
+    # check content-type
+    main_content_type = head_response.headers.get('Content-Type').split(';')[0].strip()
+    if main_content_type not in supported_content_types:
+        return "Unsupported content-type [{}] of URL.".format(main_content_type)
+
+    if main_content_type in file_extractor.SUPPORT_URL_CONTENT_TYPES:
+        return FileExtractor.load_from_url(url, return_text=True)
+
+    response = requests.get(url, headers=headers, allow_redirects=True)
+    a = extract_using_readabilipy(response.text)
+
+    if not a['plain_text'] or not a['plain_text'].strip():
+        return get_url_from_newspaper3k(url)
+
+    res = FULL_TEMPLATE.format(
+        title=a['title'],
+        authors=a['byline'],
+        publish_date=a['date'],
+        top_image="",
+        text=a['plain_text'] if a['plain_text'] else "",
+    )
+
+    return res
+
+
+def get_url_from_newspaper3k(url: str) -> str:
+
+    a = Article(url)
+    a.download()
+    a.parse()
+
+    res = FULL_TEMPLATE.format(
+        title=a.title,
+        authors=a.authors,
+        publish_date=a.publish_date,
+        top_image=a.top_image,
+        text=a.text,
+    )
+
+    return res
+
+
+def extract_using_readabilipy(html):
+    with tempfile.NamedTemporaryFile(delete=False, mode='w+') as f_html:
+        f_html.write(html)
+        f_html.close()
+    html_path = f_html.name
+
+    # Call Mozilla's Readability.js Readability.parse() function via node, writing output to a temporary file
+    article_json_path = html_path + ".json"
+    jsdir = os.path.join(find_module_path('readabilipy'), 'javascript')
+    with chdir(jsdir):
+        subprocess.check_call(["node", "ExtractArticle.js", "-i", html_path, "-o", article_json_path])
+
+    # Read output of call to Readability.parse() from JSON file and return as Python dictionary
+    with open(article_json_path, "r", encoding="utf-8") as json_file:
+        input_json = json.loads(json_file.read())
+
+    # Deleting files after processing
+    os.unlink(article_json_path)
+    os.unlink(html_path)
+
+    article_json = {
+        "title": None,
+        "byline": None,
+        "date": None,
+        "content": None,
+        "plain_content": None,
+        "plain_text": None
+    }
+    # Populate article fields from readability fields where present
+    if input_json:
+        if "title" in input_json and input_json["title"]:
+            article_json["title"] = input_json["title"]
+        if "byline" in input_json and input_json["byline"]:
+            article_json["byline"] = input_json["byline"]
+        if "date" in input_json and input_json["date"]:
+            article_json["date"] = input_json["date"]
+        if "content" in input_json and input_json["content"]:
+            article_json["content"] = input_json["content"]
+            article_json["plain_content"] = plain_content(article_json["content"], False, False)
+            article_json["plain_text"] = extract_text_blocks_as_plain_text(article_json["plain_content"])
+        if "textContent" in input_json and input_json["textContent"]:
+            article_json["plain_text"] = input_json["textContent"]
+            article_json["plain_text"] = re.sub(r'\n\s*\n', '\n', article_json["plain_text"])
+
+    return article_json
+
+
+def find_module_path(module_name):
+    for package_path in site.getsitepackages():
+        potential_path = os.path.join(package_path, module_name)
+        if os.path.exists(potential_path):
+            return potential_path
+
+    return None
+
+@contextmanager
+def chdir(path):
+    """Change directory in context and return to original on exit"""
+    # From https://stackoverflow.com/a/37996581, couldn't find a built-in
+    original_path = os.getcwd()
+    os.chdir(path)
+    try:
+        yield
+    finally:
+        os.chdir(original_path)
+
+
+def extract_text_blocks_as_plain_text(paragraph_html):
+    # Load article as DOM
+    soup = BeautifulSoup(paragraph_html, 'html.parser')
+    # Select all lists
+    list_elements = soup.find_all(['ul', 'ol'])
+    # Prefix text in all list items with "* " and make lists paragraphs
+    for list_element in list_elements:
+        plain_items = "".join(list(filter(None, [plain_text_leaf_node(li)["text"] for li in list_element.find_all('li')])))
+        list_element.string = plain_items
+        list_element.name = "p"
+    # Select all text blocks
+    text_blocks = [s.parent for s in soup.find_all(string=True)]
+    text_blocks = [plain_text_leaf_node(block) for block in text_blocks]
+    # Drop empty paragraphs
+    text_blocks = list(filter(lambda p: p["text"] is not None, text_blocks))
+    return text_blocks
+
+
+def plain_text_leaf_node(element):
+    # Extract all text, stripped of any child HTML elements and normalise it
+    plain_text = normalise_text(element.get_text())
+    if plain_text != "" and element.name == "li":
+        plain_text = "* {}, ".format(plain_text)
+    if plain_text == "":
+        plain_text = None
+    if "data-node-index" in element.attrs:
+        plain = {"node_index": element["data-node-index"], "text": plain_text}
+    else:
+        plain = {"text": plain_text}
+    return plain
+
+
+def plain_content(readability_content, content_digests, node_indexes):
+    # Load article as DOM
+    soup = BeautifulSoup(readability_content, 'html.parser')
+    # Make all elements plain
+    elements = plain_elements(soup.contents, content_digests, node_indexes)
+    if node_indexes:
+        # Add node index attributes to nodes
+        elements = [add_node_indexes(element) for element in elements]
+    # Replace article contents with plain elements
+    soup.contents = elements
+    return str(soup)
+
+
+def plain_elements(elements, content_digests, node_indexes):
+    # Get plain content versions of all elements
+    elements = [plain_element(element, content_digests, node_indexes)
+                for element in elements]
+    if content_digests:
+        # Add content digest attribute to nodes
+        elements = [add_content_digest(element) for element in elements]
+    return elements
+
+
+def plain_element(element, content_digests, node_indexes):
+    # For lists, we make each item plain text
+    if is_leaf(element):
+        # For leaf node elements, extract the text content, discarding any HTML tags
+        # 1. Get element contents as text
+        plain_text = element.get_text()
+        # 2. Normalise the extracted text string to a canonical representation
+        plain_text = normalise_text(plain_text)
+        # 3. Update element content to be plain text
+        element.string = plain_text
+    elif is_text(element):
+        if is_non_printing(element):
+            # The simplified HTML may have come from Readability.js so might
+            # have non-printing text (e.g. Comment or CData). In this case, we
+            # keep the structure, but ensure that the string is empty.
+            element = type(element)("")
+        else:
+            plain_text = element.string
+            plain_text = normalise_text(plain_text)
+            element = type(element)(plain_text)
+    else:
+        # If not a leaf node or leaf type call recursively on child nodes, replacing
+        element.contents = plain_elements(element.contents, content_digests, node_indexes)
+    return element
+
+
+def add_node_indexes(element, node_index="0"):
+    # Can't add attributes to string types
+    if is_text(element):
+        return element
+    # Add index to current element
+    element["data-node-index"] = node_index
+    # Add index to child elements
+    for local_idx, child in enumerate(
+            [c for c in element.contents if not is_text(c)], start=1):
+        # Can't add attributes to leaf string types
+        child_index = "{stem}.{local}".format(
+            stem=node_index, local=local_idx)
+        add_node_indexes(child, node_index=child_index)
+    return element
+
+
+def normalise_text(text):
+    """Normalise unicode and whitespace."""
+    # Normalise unicode first to try and standardise whitespace characters as much as possible before normalising them
+    text = strip_control_characters(text)
+    text = normalise_unicode(text)
+    text = normalise_whitespace(text)
+    return text
+
+
+def strip_control_characters(text):
+    """Strip out unicode control characters which might break the parsing."""
+    # Unicode control characters
+    #   [Cc]: Other, Control [includes new lines]
+    #   [Cf]: Other, Format
+    #   [Cn]: Other, Not Assigned
+    #   [Co]: Other, Private Use
+    #   [Cs]: Other, Surrogate
+    control_chars = set(['Cc', 'Cf', 'Cn', 'Co', 'Cs'])
+    retained_chars = ['\t', '\n', '\r', '\f']
+
+    # Remove non-printing control characters
+    return "".join(["" if (unicodedata.category(char) in control_chars) and (char not in retained_chars) else char for char in text])
+
+
+def normalise_unicode(text):
+    """Normalise unicode such that things that are visually equivalent map to the same unicode string where possible."""
+    normal_form = "NFKC"
+    text = unicodedata.normalize(normal_form, text)
+    return text
+
+
+def normalise_whitespace(text):
+    """Replace runs of whitespace characters with a single space as this is what happens when HTML text is displayed."""
+    text = regex.sub(r"\s+", " ", text)
+    # Remove leading and trailing whitespace
+    text = text.strip()
+    return text
+
+def is_leaf(element):
+    return (element.name in ['p', 'li'])
+
+
+def is_text(element):
+    return isinstance(element, NavigableString)
+
+
+def is_non_printing(element):
+    return any(isinstance(element, _e) for _e in [Comment, CData])
+
+
+def add_content_digest(element):
+    if not is_text(element):
+        element["data-content-digest"] = content_digest(element)
+    return element
+
+
+def content_digest(element):
+    if is_text(element):
+        # Hash
+        trimmed_string = element.string.strip()
+        if trimmed_string == "":
+            digest = ""
+        else:
+            digest = hashlib.sha256(trimmed_string.encode('utf-8')).hexdigest()
+    else:
+        contents = element.contents
+        num_contents = len(contents)
+        if num_contents == 0:
+            # No hash when no child elements exist
+            digest = ""
+        elif num_contents == 1:
+            # If single child, use digest of child
+            digest = content_digest(contents[0])
+        else:
+            # Build content digest from the "non-empty" digests of child nodes
+            digest = hashlib.sha256()
+            child_digests = list(
+                filter(lambda x: x != "", [content_digest(content) for content in contents]))
+            for child in child_digests:
+                digest.update(child.encode('utf-8'))
+            digest = digest.hexdigest()
+    return digest

api/migrations/versions/2beac44e5f5f_add_is_universal_in_apps.py

+"""add is_universal in apps
+
+Revision ID: 2beac44e5f5f
+Revises: d3d503a3471c
+Create Date: 2023-07-07 12:11:29.156057
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '2beac44e5f5f'
+down_revision = 'a5b56fb053ef'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('apps', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('is_universal', sa.Boolean(), server_default=sa.text('false'), nullable=False))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('apps', schema=None) as batch_op:
+        batch_op.drop_column('is_universal')
+
+    # ### end Alembic commands ###

api/migrations/versions/7ce5a52e4eee_add_tool_providers.py

+"""add tool providers
+
+Revision ID: 7ce5a52e4eee
+Revises: 2beac44e5f5f
+Create Date: 2023-07-10 10:26:50.074515
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = '7ce5a52e4eee'
+down_revision = '2beac44e5f5f'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('tool_providers',
+    sa.Column('id', postgresql.UUID(), server_default=sa.text('uuid_generate_v4()'), nullable=False),
+    sa.Column('tenant_id', postgresql.UUID(), nullable=False),
+    sa.Column('tool_name', sa.String(length=40), nullable=False),
+    sa.Column('encrypted_credentials', sa.Text(), nullable=True),
+    sa.Column('is_enabled', sa.Boolean(), server_default=sa.text('false'), nullable=False),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('CURRENT_TIMESTAMP(0)'), nullable=False),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('CURRENT_TIMESTAMP(0)'), nullable=False),
+    sa.PrimaryKeyConstraint('id', name='tool_provider_pkey'),
+    sa.UniqueConstraint('tenant_id', 'tool_name', name='unique_tool_provider_tool_name')
+    )
+    with op.batch_alter_table('app_model_configs', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('sensitive_word_avoidance', sa.Text(), nullable=True))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('app_model_configs', schema=None) as batch_op:
+        batch_op.drop_column('sensitive_word_avoidance')
+
+    op.drop_table('tool_providers')
+    # ### end Alembic commands ###

api/models/model.py

@@ -40,6 +40,7 @@ class App(db.Model):
     api_rph = db.Column(db.Integer, nullable=False)
     is_demo = db.Column(db.Boolean, nullable=False, server_default=db.text('false'))
     is_public = db.Column(db.Boolean, nullable=False, server_default=db.text('false'))
+    is_universal = db.Column(db.Boolean, nullable=False, server_default=db.text('false'))
     created_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
     updated_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
 
@@ -88,6 +89,7 @@ class AppModelConfig(db.Model):
     user_input_form = db.Column(db.Text)
     pre_prompt = db.Column(db.Text)
     agent_mode = db.Column(db.Text)
+    sensitive_word_avoidance = db.Column(db.Text)
 
     @property
     def app(self):
@@ -116,14 +118,35 @@ class AppModelConfig(db.Model):
     def more_like_this_dict(self) -> dict:
         return json.loads(self.more_like_this) if self.more_like_this else {"enabled": False}
 
+    @property
+    def sensitive_word_avoidance_dict(self) -> dict:
+        return json.loads(self.sensitive_word_avoidance) if self.sensitive_word_avoidance \
+            else {"enabled": False, "words": [], "canned_response": []}
+
     @property
     def user_input_form_list(self) -> dict:
         return json.loads(self.user_input_form) if self.user_input_form else []
 
     @property
     def agent_mode_dict(self) -> dict:
-        return json.loads(self.agent_mode) if self.agent_mode else {"enabled": False, "tools": []}
-
+        return json.loads(self.agent_mode) if self.agent_mode else {"enabled": False, "strategy": None, "tools": []}
+
+    def to_dict(self) -> dict:
+        return {
+            "provider": "",
+            "model_id": "",
+            "configs": {},
+            "opening_statement": self.opening_statement,
+            "suggested_questions": self.suggested_questions_list,
+            "suggested_questions_after_answer": self.suggested_questions_after_answer_dict,
+            "speech_to_text": self.speech_to_text_dict,
+            "more_like_this": self.more_like_this_dict,
+            "sensitive_word_avoidance": self.sensitive_word_avoidance_dict,
+            "model": self.model_dict,
+            "user_input_form": self.user_input_form_list,
+            "pre_prompt": self.pre_prompt,
+            "agent_mode": self.agent_mode_dict
+        }
 
 class RecommendedApp(db.Model):
     __tablename__ = 'recommended_apps'
@@ -235,6 +258,9 @@ class Conversation(db.Model):
                     if 'speech_to_text' in override_model_configs else {"enabled": False}
                 model_config['more_like_this'] = override_model_configs['more_like_this'] \
                     if 'more_like_this' in override_model_configs else {"enabled": False}
+                model_config['sensitive_word_avoidance'] = override_model_configs['sensitive_word_avoidance'] \
+                    if 'sensitive_word_avoidance' in override_model_configs \
+                    else {"enabled": False, "words": [], "canned_response": []}
                 model_config['user_input_form'] = override_model_configs['user_input_form']
             else:
                 model_config['configs'] = override_model_configs
@@ -251,6 +277,7 @@ class Conversation(db.Model):
             model_config['suggested_questions_after_answer'] = app_model_config.suggested_questions_after_answer_dict
             model_config['speech_to_text'] = app_model_config.speech_to_text_dict
             model_config['more_like_this'] = app_model_config.more_like_this_dict
+            model_config['sensitive_word_avoidance'] = app_model_config.sensitive_word_avoidance_dict
             model_config['user_input_form'] = app_model_config.user_input_form_list
 
         model_config['model_id'] = self.model_id
@@ -391,6 +418,11 @@ class Message(db.Model):
     def in_debug_mode(self):
         return self.override_model_configs is not None
 
+    @property
+    def agent_thoughts(self):
+        return db.session.query(MessageAgentThought).filter(MessageAgentThought.message_id == self.id)\
+            .order_by(MessageAgentThought.position.asc()).all()
+
 
 class MessageFeedback(db.Model):
     __tablename__ = 'message_feedbacks'

api/models/tool.py

+import json
+from enum import Enum
+
+from sqlalchemy.dialects.postgresql import UUID
+
+from extensions.ext_database import db
+
+
+class ToolProviderName(Enum):
+    SERPAPI = 'serpapi'
+
+    @staticmethod
+    def value_of(value):
+        for member in ToolProviderName:
+            if member.value == value:
+                return member
+        raise ValueError(f"No matching enum found for value '{value}'")
+
+
+class ToolProvider(db.Model):
+    __tablename__ = 'tool_providers'
+    __table_args__ = (
+        db.PrimaryKeyConstraint('id', name='tool_provider_pkey'),
+        db.UniqueConstraint('tenant_id', 'tool_name', name='unique_tool_provider_tool_name')
+    )
+
+    id = db.Column(UUID, server_default=db.text('uuid_generate_v4()'))
+    tenant_id = db.Column(UUID, nullable=False)
+    tool_name = db.Column(db.String(40), nullable=False)
+    encrypted_credentials = db.Column(db.Text, nullable=True)
+    is_enabled = db.Column(db.Boolean, nullable=False, server_default=db.text('false'))
+    created_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
+    updated_at = db.Column(db.DateTime, nullable=False, server_default=db.text('CURRENT_TIMESTAMP(0)'))
+
+    @property
+    def credentials_is_set(self):
+        """
+         Returns True if the encrypted_config is not None, indicating that the token is set.
+         """
+        return self.encrypted_credentials is not None
+
+    @property
+    def credentials(self):
+        """
+        Returns the decrypted config.
+        """
+        return json.loads(self.encrypted_credentials) if self.encrypted_credentials is not None else None

api/requirements.txt

@@ -11,7 +11,7 @@ flask-cors==3.0.10
 gunicorn~=20.1.0
 gevent~=22.10.2
 langchain==0.0.230
-openai~=0.27.5
+openai~=0.27.8
 psycopg2-binary~=2.9.6
 pycryptodome==3.17
 python-dotenv==1.0.0
@@ -36,3 +36,8 @@ pypdfium2==4.16.0
 resend~=0.5.1
 pyjwt~=2.6.0
 anthropic~=0.3.4
+newspaper3k==0.2.8
+google-api-python-client==2.90.0
+wikipedia==1.4.0
+readabilipy==0.2.0
+google-search-results==2.4.2
\ No newline at end of file

api/services/app_model_config_service.py

 import re
 import uuid
 
+from core.agent.agent_executor import PlanningStrategy
 from core.constant import llm_constant
 from models.account import Account
 from services.dataset_service import DatasetService
@@ -31,6 +32,16 @@ MODELS_BY_APP_MODE = {
     ]
 }
 
+SUPPORT_AGENT_MODELS = [
+    "gpt-4",
+    "gpt-4-32k",
+    "gpt-3.5-turbo",
+    "gpt-3.5-turbo-16k",
+]
+
+SUPPORT_TOOLS = ["dataset", "google_search", "web_reader", "wikipedia"]
+
+
 class AppModelConfigService:
     @staticmethod
     def is_dataset_exists(account: Account, dataset_id: str) -> bool:
@@ -58,7 +69,8 @@ class AppModelConfigService:
         if not isinstance(cp["max_tokens"], int) or cp["max_tokens"] <= 0 or cp["max_tokens"] > \
                 llm_constant.max_context_token_length[model_name]:
             raise ValueError(
-                "max_tokens must be an integer greater than 0 and not exceeding the maximum value of the corresponding model")
+                "max_tokens must be an integer greater than 0 "
+                "and not exceeding the maximum value of the corresponding model")
 
         # temperature
         if 'temperature' not in cp:
@@ -169,6 +181,33 @@ class AppModelConfigService:
         if not isinstance(config["more_like_this"]["enabled"], bool):
             raise ValueError("enabled in more_like_this must be of boolean type")
 
+        # sensitive_word_avoidance
+        if 'sensitive_word_avoidance' not in config or not config["sensitive_word_avoidance"]:
+            config["sensitive_word_avoidance"] = {
+                "enabled": False
+            }
+
+        if not isinstance(config["sensitive_word_avoidance"], dict):
+            raise ValueError("sensitive_word_avoidance must be of dict type")
+
+        if "enabled" not in config["sensitive_word_avoidance"] or not config["sensitive_word_avoidance"]["enabled"]:
+            config["sensitive_word_avoidance"]["enabled"] = False
+
+        if not isinstance(config["sensitive_word_avoidance"]["enabled"], bool):
+            raise ValueError("enabled in sensitive_word_avoidance must be of boolean type")
+
+        if "words" not in config["sensitive_word_avoidance"] or not config["sensitive_word_avoidance"]["words"]:
+            config["sensitive_word_avoidance"]["words"] = ""
+
+        if not isinstance(config["sensitive_word_avoidance"]["words"], str):
+            raise ValueError("words in sensitive_word_avoidance must be of string type")
+
+        if "canned_response" not in config["sensitive_word_avoidance"] or not config["sensitive_word_avoidance"]["canned_response"]:
+            config["sensitive_word_avoidance"]["canned_response"] = ""
+
+        if not isinstance(config["sensitive_word_avoidance"]["canned_response"], str):
+            raise ValueError("canned_response in sensitive_word_avoidance must be of string type")
+
         # model
         if 'model' not in config:
             raise ValueError("model is required")
@@ -274,6 +313,12 @@ class AppModelConfigService:
         if not isinstance(config["agent_mode"]["enabled"], bool):
             raise ValueError("enabled in agent_mode must be of boolean type")
 
+        if "strategy" not in config["agent_mode"] or not config["agent_mode"]["strategy"]:
+            config["agent_mode"]["strategy"] = PlanningStrategy.ROUTER.value
+
+        if config["agent_mode"]["strategy"] not in [member.value for member in list(PlanningStrategy.__members__.values())]:
+            raise ValueError("strategy in agent_mode must be in the specified strategy list")
+
         if "tools" not in config["agent_mode"] or not config["agent_mode"]["tools"]:
             config["agent_mode"]["tools"] = []
 
@@ -282,8 +327,8 @@ class AppModelConfigService:
 
         for tool in config["agent_mode"]["tools"]:
             key = list(tool.keys())[0]
-            if key not in ["sensitive-word-avoidance", "dataset"]:
-                raise ValueError("Keys in agent_mode.tools list can only be 'sensitive-word-avoidance' or 'dataset'")
+            if key not in SUPPORT_TOOLS:
+                raise ValueError("Keys in agent_mode.tools must be in the specified tool list")
 
             tool_item = tool[key]
 
@@ -293,19 +338,7 @@ class AppModelConfigService:
             if not isinstance(tool_item["enabled"], bool):
                 raise ValueError("enabled in agent_mode.tools must be of boolean type")
 
-            if key == "sensitive-word-avoidance":
-                if "words" not in tool_item or not tool_item["words"]:
-                    tool_item["words"] = ""
-
-                if not isinstance(tool_item["words"], str):
-                    raise ValueError("words in sensitive-word-avoidance must be of string type")
-
-                if "canned_response" not in tool_item or not tool_item["canned_response"]:
-                    tool_item["canned_response"] = ""
-
-                if not isinstance(tool_item["canned_response"], str):
-                    raise ValueError("canned_response in sensitive-word-avoidance must be of string type")
-            elif key == "dataset":
+            if key == "dataset":
                 if 'id' not in tool_item:
                     raise ValueError("id is required in dataset")
 
@@ -324,6 +357,7 @@ class AppModelConfigService:
             "suggested_questions_after_answer": config["suggested_questions_after_answer"],
             "speech_to_text": config["speech_to_text"],
             "more_like_this": config["more_like_this"],
+            "sensitive_word_avoidance": config["sensitive_word_avoidance"],
             "model": {
                 "provider": config["model"]["provider"],
                 "name": config["model"]["name"],

api/services/completion_service.py

@@ -140,6 +140,7 @@ class CompletionService:
                     suggested_questions=json.dumps(model_config['suggested_questions']),
                     suggested_questions_after_answer=json.dumps(model_config['suggested_questions_after_answer']),
                     more_like_this=json.dumps(model_config['more_like_this']),
+                    sensitive_word_avoidance=json.dumps(model_config['sensitive_word_avoidance']),
                     model=json.dumps(model_config['model']),
                     user_input_form=json.dumps(model_config['user_input_form']),
                     pre_prompt=model_config['pre_prompt'],
@@ -226,8 +227,8 @@ class CompletionService:
 
     @classmethod
     def countdown_and_close(cls, worker_thread, pubsub, user, generate_task_id) -> threading.Thread:
-        # wait for 5 minutes to close the thread
-        timeout = 300
+        # wait for 10 minutes to close the thread
+        timeout = 600
 
         def close_pubsub():
             sleep_iterations = 0
@@ -467,16 +468,14 @@ class CompletionService:
     def get_agent_thought_response_data(cls, data: dict):
         response_data = {
             'event': 'agent_thought',
-            'id': data.get('agent_thought_id'),
+            'id': data.get('id'),
             'chain_id': data.get('chain_id'),
             'task_id': data.get('task_id'),
             'message_id': data.get('message_id'),
             'position': data.get('position'),
             'thought': data.get('thought'),
-            'tool': data.get('tool'),  # todo use real dataset obj replace it
+            'tool': data.get('tool'),
             'tool_input': data.get('tool_input'),
-            'observation': data.get('observation'),
-            'answer': data.get('answer') if not data.get('thought') else '',
             'created_at': int(time.time())
         }