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298 lines
13 KiB
Python
298 lines
13 KiB
Python
import json
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from os import getenv
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from typing import Any
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from urllib.parse import urlencode
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import httpx
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from core.helper import ssrf_proxy
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from core.tools.entities.tool_bundle import ApiToolBundle
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from core.tools.entities.tool_entities import ToolInvokeMessage, ToolProviderType
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from core.tools.errors import ToolInvokeError, ToolParameterValidationError, ToolProviderCredentialValidationError
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from core.tools.tool.tool import Tool
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API_TOOL_DEFAULT_TIMEOUT = (
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int(getenv("API_TOOL_DEFAULT_CONNECT_TIMEOUT", "10")),
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int(getenv("API_TOOL_DEFAULT_READ_TIMEOUT", "60")),
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)
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class ApiTool(Tool):
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api_bundle: ApiToolBundle
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"""
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Api tool
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"""
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def fork_tool_runtime(self, runtime: dict[str, Any]) -> "Tool":
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"""
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fork a new tool with meta data
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:param meta: the meta data of a tool call processing, tenant_id is required
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:return: the new tool
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"""
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return self.__class__(
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identity=self.identity.model_copy() if self.identity else None,
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parameters=self.parameters.copy() if self.parameters else None,
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description=self.description.model_copy() if self.description else None,
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api_bundle=self.api_bundle.model_copy() if self.api_bundle else None,
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runtime=Tool.Runtime(**runtime),
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)
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def validate_credentials(
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self, credentials: dict[str, Any], parameters: dict[str, Any], format_only: bool = False
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) -> str:
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"""
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validate the credentials for Api tool
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"""
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# assemble validate request and request parameters
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headers = self.assembling_request(parameters)
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if format_only:
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return ""
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response = self.do_http_request(self.api_bundle.server_url, self.api_bundle.method, headers, parameters)
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# validate response
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return self.validate_and_parse_response(response)
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def tool_provider_type(self) -> ToolProviderType:
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return ToolProviderType.API
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def assembling_request(self, parameters: dict[str, Any]) -> dict[str, Any]:
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headers = {}
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credentials = self.runtime.credentials or {}
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if "auth_type" not in credentials:
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raise ToolProviderCredentialValidationError("Missing auth_type")
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if credentials["auth_type"] == "api_key":
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api_key_header = "api_key"
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if "api_key_header" in credentials:
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api_key_header = credentials["api_key_header"]
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if "api_key_value" not in credentials:
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raise ToolProviderCredentialValidationError("Missing api_key_value")
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elif not isinstance(credentials["api_key_value"], str):
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raise ToolProviderCredentialValidationError("api_key_value must be a string")
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if "api_key_header_prefix" in credentials:
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api_key_header_prefix = credentials["api_key_header_prefix"]
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if api_key_header_prefix == "basic" and credentials["api_key_value"]:
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credentials["api_key_value"] = f'Basic {credentials["api_key_value"]}'
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elif api_key_header_prefix == "bearer" and credentials["api_key_value"]:
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credentials["api_key_value"] = f'Bearer {credentials["api_key_value"]}'
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elif api_key_header_prefix == "custom":
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pass
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headers[api_key_header] = credentials["api_key_value"]
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needed_parameters = [parameter for parameter in self.api_bundle.parameters if parameter.required]
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for parameter in needed_parameters:
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if parameter.required and parameter.name not in parameters:
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raise ToolParameterValidationError(f"Missing required parameter {parameter.name}")
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if parameter.default is not None and parameter.name not in parameters:
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parameters[parameter.name] = parameter.default
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return headers
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def validate_and_parse_response(self, response: httpx.Response) -> str:
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"""
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validate the response
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"""
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if isinstance(response, httpx.Response):
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if response.status_code >= 400:
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raise ToolInvokeError(f"Request failed with status code {response.status_code} and {response.text}")
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if not response.content:
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return "Empty response from the tool, please check your parameters and try again."
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try:
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response = response.json()
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try:
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return json.dumps(response, ensure_ascii=False)
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except Exception as e:
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return json.dumps(response)
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except Exception as e:
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return response.text
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else:
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raise ValueError(f"Invalid response type {type(response)}")
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@staticmethod
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def get_parameter_value(parameter, parameters):
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if parameter["name"] in parameters:
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return parameters[parameter["name"]]
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elif parameter.get("required", False):
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raise ToolParameterValidationError(f"Missing required parameter {parameter['name']}")
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else:
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return (parameter.get("schema", {}) or {}).get("default", "")
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def do_http_request(
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self, url: str, method: str, headers: dict[str, Any], parameters: 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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method = method.lower()
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params = {}
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path_params = {}
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body = {}
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cookies = {}
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# check parameters
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for parameter in self.api_bundle.openapi.get("parameters", []):
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value = self.get_parameter_value(parameter, parameters)
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if parameter["in"] == "path":
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path_params[parameter["name"]] = value
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elif parameter["in"] == "query":
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if value != "":
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params[parameter["name"]] = value
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elif parameter["in"] == "cookie":
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cookies[parameter["name"]] = value
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elif parameter["in"] == "header":
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headers[parameter["name"]] = value
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# check if there is a request body and handle it
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if "requestBody" in self.api_bundle.openapi and self.api_bundle.openapi["requestBody"] is not None:
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# handle json request body
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if "content" in self.api_bundle.openapi["requestBody"]:
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for content_type in self.api_bundle.openapi["requestBody"]["content"]:
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headers["Content-Type"] = content_type
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body_schema = self.api_bundle.openapi["requestBody"]["content"][content_type]["schema"]
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required = body_schema.get("required", [])
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properties = body_schema.get("properties", {})
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for name, property in properties.items():
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if name in parameters:
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# convert type
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body[name] = self._convert_body_property_type(property, parameters[name])
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elif name in required:
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raise ToolParameterValidationError(
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f"Missing required parameter {name} in operation {self.api_bundle.operation_id}"
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)
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elif "default" in property:
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body[name] = property["default"]
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else:
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body[name] = None
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break
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# replace path parameters
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for name, value in path_params.items():
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url = url.replace(f"{{{name}}}", f"{value}")
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# parse http body data if needed, for GET/HEAD/OPTIONS/TRACE, the body is ignored
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if "Content-Type" in headers:
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if headers["Content-Type"] == "application/json":
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body = json.dumps(body)
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elif headers["Content-Type"] == "application/x-www-form-urlencoded":
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body = urlencode(body)
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else:
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body = body
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if method in {"get", "head", "post", "put", "delete", "patch"}:
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response = getattr(ssrf_proxy, method)(
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url,
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params=params,
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headers=headers,
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cookies=cookies,
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data=body,
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timeout=API_TOOL_DEFAULT_TIMEOUT,
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follow_redirects=True,
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)
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return response
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else:
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raise ValueError(f"Invalid http method {self.method}")
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def _convert_body_property_any_of(
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self, property: dict[str, Any], value: Any, any_of: list[dict[str, Any]], max_recursive=10
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) -> Any:
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if max_recursive <= 0:
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raise Exception("Max recursion depth reached")
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for option in any_of or []:
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try:
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if "type" in option:
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# Attempt to convert the value based on the type.
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if option["type"] == "integer" or option["type"] == "int":
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return int(value)
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elif option["type"] == "number":
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if "." in str(value):
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return float(value)
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else:
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return int(value)
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elif option["type"] == "string":
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return str(value)
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elif option["type"] == "boolean":
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if str(value).lower() in {"true", "1"}:
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return True
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elif str(value).lower() in {"false", "0"}:
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return False
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else:
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continue # Not a boolean, try next option
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elif option["type"] == "null" and not value:
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return None
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else:
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continue # Unsupported type, try next option
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elif "anyOf" in option and isinstance(option["anyOf"], list):
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# Recursive call to handle nested anyOf
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return self._convert_body_property_any_of(property, value, option["anyOf"], max_recursive - 1)
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except ValueError:
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continue # Conversion failed, try next option
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# If no option succeeded, you might want to return the value as is or raise an error
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return value # or raise ValueError(f"Cannot convert value '{value}' to any specified type in anyOf")
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def _convert_body_property_type(self, property: dict[str, Any], value: Any) -> Any:
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try:
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if "type" in property:
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if property["type"] == "integer" or property["type"] == "int":
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return int(value)
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elif property["type"] == "number":
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# check if it is a float
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if "." in str(value):
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return float(value)
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else:
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return int(value)
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elif property["type"] == "string":
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return str(value)
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elif property["type"] == "boolean":
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return bool(value)
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elif property["type"] == "null":
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if value is None:
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return None
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elif property["type"] == "object" or property["type"] == "array":
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if isinstance(value, str):
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try:
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# an array str like '[1,2]' also can convert to list [1,2] through json.loads
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# json not support single quote, but we can support it
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value = value.replace("'", '"')
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return json.loads(value)
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except ValueError:
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return value
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elif isinstance(value, dict):
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return value
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else:
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return value
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else:
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raise ValueError(f"Invalid type {property['type']} for property {property}")
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elif "anyOf" in property and isinstance(property["anyOf"], list):
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return self._convert_body_property_any_of(property, value, property["anyOf"])
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except ValueError as e:
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return value
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def _invoke(self, user_id: str, tool_parameters: dict[str, Any]) -> ToolInvokeMessage | list[ToolInvokeMessage]:
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"""
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invoke http request
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"""
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# assemble request
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headers = self.assembling_request(tool_parameters)
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# do http request
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response = self.do_http_request(self.api_bundle.server_url, self.api_bundle.method, headers, tool_parameters)
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# validate response
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response = self.validate_and_parse_response(response)
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# assemble invoke message
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return self.create_text_message(response)
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