mirror of
https://github.com/langgenius/dify.git
synced 2024-11-16 11:42:29 +08:00
120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
import enum
|
|
import importlib.util
|
|
import json
|
|
import logging
|
|
import os
|
|
from pathlib import Path
|
|
from typing import Any, Optional
|
|
|
|
from pydantic import BaseModel
|
|
|
|
from core.helper.position_helper import sort_to_dict_by_position_map
|
|
|
|
|
|
class ExtensionModule(enum.Enum):
|
|
MODERATION = "moderation"
|
|
EXTERNAL_DATA_TOOL = "external_data_tool"
|
|
|
|
|
|
class ModuleExtension(BaseModel):
|
|
extension_class: Any = None
|
|
name: str
|
|
label: Optional[dict] = None
|
|
form_schema: Optional[list] = None
|
|
builtin: bool = True
|
|
position: Optional[int] = None
|
|
|
|
|
|
class Extensible:
|
|
module: ExtensionModule
|
|
|
|
name: str
|
|
tenant_id: str
|
|
config: Optional[dict] = None
|
|
|
|
def __init__(self, tenant_id: str, config: Optional[dict] = None) -> None:
|
|
self.tenant_id = tenant_id
|
|
self.config = config
|
|
|
|
@classmethod
|
|
def scan_extensions(cls):
|
|
extensions: list[ModuleExtension] = []
|
|
position_map = {}
|
|
|
|
# get the path of the current class
|
|
current_path = os.path.abspath(cls.__module__.replace(".", os.path.sep) + ".py")
|
|
current_dir_path = os.path.dirname(current_path)
|
|
|
|
# traverse subdirectories
|
|
for subdir_name in os.listdir(current_dir_path):
|
|
if subdir_name.startswith("__"):
|
|
continue
|
|
|
|
subdir_path = os.path.join(current_dir_path, subdir_name)
|
|
extension_name = subdir_name
|
|
if os.path.isdir(subdir_path):
|
|
file_names = os.listdir(subdir_path)
|
|
|
|
# is builtin extension, builtin extension
|
|
# in the front-end page and business logic, there are special treatments.
|
|
builtin = False
|
|
position = None
|
|
if "__builtin__" in file_names:
|
|
builtin = True
|
|
|
|
builtin_file_path = os.path.join(subdir_path, "__builtin__")
|
|
if os.path.exists(builtin_file_path):
|
|
position = int(Path(builtin_file_path).read_text(encoding="utf-8").strip())
|
|
position_map[extension_name] = position
|
|
|
|
if (extension_name + ".py") not in file_names:
|
|
logging.warning(f"Missing {extension_name}.py file in {subdir_path}, Skip.")
|
|
continue
|
|
|
|
# Dynamic loading {subdir_name}.py file and find the subclass of Extensible
|
|
py_path = os.path.join(subdir_path, extension_name + ".py")
|
|
spec = importlib.util.spec_from_file_location(extension_name, py_path)
|
|
if not spec or not spec.loader:
|
|
raise Exception(f"Failed to load module {extension_name} from {py_path}")
|
|
mod = importlib.util.module_from_spec(spec)
|
|
spec.loader.exec_module(mod)
|
|
|
|
extension_class = None
|
|
for name, obj in vars(mod).items():
|
|
if isinstance(obj, type) and issubclass(obj, cls) and obj != cls:
|
|
extension_class = obj
|
|
break
|
|
|
|
if not extension_class:
|
|
logging.warning(f"Missing subclass of {cls.__name__} in {py_path}, Skip.")
|
|
continue
|
|
|
|
json_data = {}
|
|
if not builtin:
|
|
if "schema.json" not in file_names:
|
|
logging.warning(f"Missing schema.json file in {subdir_path}, Skip.")
|
|
continue
|
|
|
|
json_path = os.path.join(subdir_path, "schema.json")
|
|
json_data = {}
|
|
if os.path.exists(json_path):
|
|
with open(json_path, encoding="utf-8") as f:
|
|
json_data = json.load(f)
|
|
|
|
extensions.append(
|
|
ModuleExtension(
|
|
extension_class=extension_class,
|
|
name=extension_name,
|
|
label=json_data.get("label"),
|
|
form_schema=json_data.get("form_schema"),
|
|
builtin=builtin,
|
|
position=position,
|
|
)
|
|
)
|
|
|
|
sorted_extensions = sort_to_dict_by_position_map(
|
|
position_map=position_map, data=extensions, name_func=lambda x: x.name
|
|
)
|
|
|
|
return sorted_extensions
|