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275 lines
11 KiB
Python
275 lines
11 KiB
Python
import json
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from copy import deepcopy
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from datetime import datetime, timezone
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from typing import Any, Optional, Union
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import httpx
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import validators
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# from tasks.external_document_indexing_task import external_document_indexing_task
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from core.helper import ssrf_proxy
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from extensions.ext_database import db
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from models.dataset import (
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Dataset,
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ExternalKnowledgeApis,
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ExternalKnowledgeBindings,
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)
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from services.entities.external_knowledge_entities.external_knowledge_entities import (
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Authorization,
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ExternalKnowledgeApiSetting,
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)
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from services.errors.dataset import DatasetNameDuplicateError
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class ExternalDatasetService:
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@staticmethod
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def get_external_knowledge_apis(page, per_page, tenant_id, search=None) -> tuple[list[ExternalKnowledgeApis], int]:
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query = ExternalKnowledgeApis.query.filter(ExternalKnowledgeApis.tenant_id == tenant_id).order_by(
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ExternalKnowledgeApis.created_at.desc()
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)
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if search:
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query = query.filter(ExternalKnowledgeApis.name.ilike(f"%{search}%"))
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external_knowledge_apis = query.paginate(page=page, per_page=per_page, max_per_page=100, error_out=False)
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return external_knowledge_apis.items, external_knowledge_apis.total
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@classmethod
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def validate_api_list(cls, api_settings: dict):
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if not api_settings:
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raise ValueError("api list is empty")
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if "endpoint" not in api_settings and not api_settings["endpoint"]:
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raise ValueError("endpoint is required")
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if "api_key" not in api_settings and not api_settings["api_key"]:
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raise ValueError("api_key is required")
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@staticmethod
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def create_external_knowledge_api(tenant_id: str, user_id: str, args: dict) -> ExternalKnowledgeApis:
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ExternalDatasetService.check_endpoint_and_api_key(args.get("settings"))
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external_knowledge_api = ExternalKnowledgeApis(
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tenant_id=tenant_id,
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created_by=user_id,
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updated_by=user_id,
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name=args.get("name"),
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description=args.get("description", ""),
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settings=json.dumps(args.get("settings"), ensure_ascii=False),
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)
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db.session.add(external_knowledge_api)
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db.session.commit()
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return external_knowledge_api
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@staticmethod
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def check_endpoint_and_api_key(settings: dict):
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if "endpoint" not in settings or not settings["endpoint"]:
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raise ValueError("endpoint is required")
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if "api_key" not in settings or not settings["api_key"]:
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raise ValueError("api_key is required")
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endpoint = f"{settings['endpoint']}/retrieval"
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api_key = settings["api_key"]
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if not validators.url(endpoint):
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raise ValueError(f"invalid endpoint: {endpoint}")
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try:
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response = httpx.post(endpoint, headers={"Authorization": f"Bearer {api_key}"})
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except Exception as e:
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raise ValueError(f"failed to connect to the endpoint: {endpoint}")
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if response.status_code == 502:
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raise ValueError(f"Bad Gateway: failed to connect to the endpoint: {endpoint}")
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if response.status_code == 404:
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raise ValueError(f"Not Found: failed to connect to the endpoint: {endpoint}")
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if response.status_code == 403:
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raise ValueError(f"Forbidden: Authorization failed with api_key: {api_key}")
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@staticmethod
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def get_external_knowledge_api(external_knowledge_api_id: str) -> ExternalKnowledgeApis:
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return ExternalKnowledgeApis.query.filter_by(id=external_knowledge_api_id).first()
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@staticmethod
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def update_external_knowledge_api(tenant_id, user_id, external_knowledge_api_id, args) -> ExternalKnowledgeApis:
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external_knowledge_api = ExternalKnowledgeApis.query.filter_by(
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id=external_knowledge_api_id, tenant_id=tenant_id
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).first()
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if external_knowledge_api is None:
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raise ValueError("api template not found")
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external_knowledge_api.name = args.get("name")
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external_knowledge_api.description = args.get("description", "")
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external_knowledge_api.settings = json.dumps(args.get("settings"), ensure_ascii=False)
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external_knowledge_api.updated_by = user_id
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external_knowledge_api.updated_at = datetime.now(timezone.utc).replace(tzinfo=None)
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db.session.commit()
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return external_knowledge_api
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@staticmethod
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def delete_external_knowledge_api(tenant_id: str, external_knowledge_api_id: str):
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external_knowledge_api = ExternalKnowledgeApis.query.filter_by(
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id=external_knowledge_api_id, tenant_id=tenant_id
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).first()
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if external_knowledge_api is None:
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raise ValueError("api template not found")
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db.session.delete(external_knowledge_api)
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db.session.commit()
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@staticmethod
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def external_knowledge_api_use_check(external_knowledge_api_id: str) -> tuple[bool, int]:
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count = ExternalKnowledgeBindings.query.filter_by(external_knowledge_api_id=external_knowledge_api_id).count()
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if count > 0:
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return True, count
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return False, 0
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@staticmethod
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def get_external_knowledge_binding_with_dataset_id(tenant_id: str, dataset_id: str) -> ExternalKnowledgeBindings:
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external_knowledge_binding = ExternalKnowledgeBindings.query.filter_by(
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dataset_id=dataset_id, tenant_id=tenant_id
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).first()
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if not external_knowledge_binding:
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raise ValueError("external knowledge binding not found")
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return external_knowledge_binding
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@staticmethod
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def document_create_args_validate(tenant_id: str, external_knowledge_api_id: str, process_parameter: dict):
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external_knowledge_api = ExternalKnowledgeApis.query.filter_by(
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id=external_knowledge_api_id, tenant_id=tenant_id
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).first()
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if external_knowledge_api is None:
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raise ValueError("api template not found")
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settings = json.loads(external_knowledge_api.settings)
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for setting in settings:
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custom_parameters = setting.get("document_process_setting")
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if custom_parameters:
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for parameter in custom_parameters:
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if parameter.get("required", False) and not process_parameter.get(parameter.get("name")):
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raise ValueError(f'{parameter.get("name")} is required')
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@staticmethod
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def process_external_api(
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settings: ExternalKnowledgeApiSetting, files: Union[None, dict[str, Any]]
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) -> httpx.Response:
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"""
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do http request depending on api bundle
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"""
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kwargs = {
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"url": settings.url,
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"headers": settings.headers,
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"follow_redirects": True,
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}
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response = getattr(ssrf_proxy, settings.request_method)(data=json.dumps(settings.params), files=files, **kwargs)
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return response
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@staticmethod
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def assembling_headers(authorization: Authorization, headers: Optional[dict] = None) -> dict[str, Any]:
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authorization = deepcopy(authorization)
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if headers:
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headers = deepcopy(headers)
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else:
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headers = {}
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if authorization.type == "api-key":
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if authorization.config is None:
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raise ValueError("authorization config is required")
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if authorization.config.api_key is None:
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raise ValueError("api_key is required")
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if not authorization.config.header:
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authorization.config.header = "Authorization"
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if authorization.config.type == "bearer":
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headers[authorization.config.header] = f"Bearer {authorization.config.api_key}"
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elif authorization.config.type == "basic":
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headers[authorization.config.header] = f"Basic {authorization.config.api_key}"
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elif authorization.config.type == "custom":
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headers[authorization.config.header] = authorization.config.api_key
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return headers
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@staticmethod
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def get_external_knowledge_api_settings(settings: dict) -> ExternalKnowledgeApiSetting:
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return ExternalKnowledgeApiSetting.parse_obj(settings)
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@staticmethod
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def create_external_dataset(tenant_id: str, user_id: str, args: dict) -> Dataset:
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# check if dataset name already exists
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if Dataset.query.filter_by(name=args.get("name"), tenant_id=tenant_id).first():
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raise DatasetNameDuplicateError(f"Dataset with name {args.get('name')} already exists.")
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external_knowledge_api = ExternalKnowledgeApis.query.filter_by(
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id=args.get("external_knowledge_api_id"), tenant_id=tenant_id
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).first()
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if external_knowledge_api is None:
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raise ValueError("api template not found")
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dataset = Dataset(
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tenant_id=tenant_id,
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name=args.get("name"),
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description=args.get("description", ""),
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provider="external",
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retrieval_model=args.get("external_retrieval_model"),
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created_by=user_id,
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)
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db.session.add(dataset)
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db.session.flush()
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external_knowledge_binding = ExternalKnowledgeBindings(
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tenant_id=tenant_id,
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dataset_id=dataset.id,
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external_knowledge_api_id=args.get("external_knowledge_api_id"),
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external_knowledge_id=args.get("external_knowledge_id"),
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created_by=user_id,
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)
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db.session.add(external_knowledge_binding)
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db.session.commit()
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return dataset
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@staticmethod
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def fetch_external_knowledge_retrieval(
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tenant_id: str, dataset_id: str, query: str, external_retrieval_parameters: dict
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) -> list:
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external_knowledge_binding = ExternalKnowledgeBindings.query.filter_by(
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dataset_id=dataset_id, tenant_id=tenant_id
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).first()
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if not external_knowledge_binding:
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raise ValueError("external knowledge binding not found")
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external_knowledge_api = ExternalKnowledgeApis.query.filter_by(
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id=external_knowledge_binding.external_knowledge_api_id
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).first()
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if not external_knowledge_api:
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raise ValueError("external api template not found")
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settings = json.loads(external_knowledge_api.settings)
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headers = {"Content-Type": "application/json"}
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if settings.get("api_key"):
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headers["Authorization"] = f"Bearer {settings.get('api_key')}"
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score_threshold_enabled = external_retrieval_parameters.get("score_threshold_enabled") or False
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score_threshold = external_retrieval_parameters.get("score_threshold", 0.0) if score_threshold_enabled else 0.0
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request_params = {
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"retrieval_setting": {
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"top_k": external_retrieval_parameters.get("top_k"),
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"score_threshold": score_threshold,
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},
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"query": query,
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"knowledge_id": external_knowledge_binding.external_knowledge_id,
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}
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external_knowledge_api_setting = {
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"url": f"{settings.get('endpoint')}/retrieval",
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"request_method": "post",
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"headers": headers,
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"params": request_params,
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}
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response = ExternalDatasetService.process_external_api(
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ExternalKnowledgeApiSetting(**external_knowledge_api_setting), None
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)
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if response.status_code == 200:
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return response.json().get("records", [])
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return []
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