import hashlib import importlib import logging import os import sys import urllib.parse import urllib.request from importlib import metadata from pathlib import Path from typing import Optional, List from .output import log from .storage import storage plugins = {} # 1: List archinstall.plugin definitions # 2: Load the plugin entrypoint # 3: Initiate the plugin and store it as .name in plugins for plugin_definition in metadata.entry_points().select(group='archinstall.plugin'): plugin_entrypoint = plugin_definition.load() try: plugins[plugin_definition.name] = plugin_entrypoint() except Exception as err: log(f'Error: {err}', level=logging.ERROR) log(f"The above error was detected when loading the plugin: {plugin_definition}", fg="red", level=logging.ERROR) def localize_path(path: Path) -> Path: """ Support structures for load_plugin() """ url = urllib.parse.urlparse(str(path)) if url.scheme and url.scheme in ('https', 'http'): converted_path = Path(f'/tmp/{path.stem}_{hashlib.md5(os.urandom(12)).hexdigest()}.py') with open(converted_path, "w") as temp_file: temp_file.write(urllib.request.urlopen(url.geturl()).read().decode('utf-8')) return converted_path else: return path def import_via_path(path: Path, namespace: Optional[str] = None) -> Optional[str]: if not namespace: namespace = os.path.basename(path) if namespace == '__init__.py': namespace = path.parent.name try: spec = importlib.util.spec_from_file_location(namespace, path) if spec and spec.loader: imported = importlib.util.module_from_spec(spec) sys.modules[namespace] = imported spec.loader.exec_module(sys.modules[namespace]) return namespace except Exception as err: log(f'Error: {err}', level=logging.ERROR) log(f"The above error was detected when loading the plugin: {path}", fg="red", level=logging.ERROR) try: del sys.modules[namespace] except Exception: pass return namespace def find_nth(haystack: List[str], needle: str, n: int) -> Optional[int]: indices = [idx for idx, elem in enumerate(haystack) if elem == needle] if n <= len(indices): return indices[n - 1] return None def load_plugin(path: Path): namespace: Optional[str] = None parsed_url = urllib.parse.urlparse(str(path)) log(f"Loading plugin from url {parsed_url}.", level=logging.INFO) # The Profile was not a direct match on a remote URL if not parsed_url.scheme: # Path was not found in any known examples, check if it's an absolute path if os.path.isfile(path): namespace = import_via_path(path) elif parsed_url.scheme in ('https', 'http'): localized = localize_path(path) namespace = import_via_path(localized) if namespace and namespace in sys.modules: # Version dependency via __archinstall__version__ variable (if present) in the plugin # Any errors in version inconsistency will be handled through normal error handling if not defined. if hasattr(sys.modules[namespace], '__archinstall__version__'): archinstall_major_and_minor_version = float(storage['__version__'][:find_nth(storage['__version__'], '.', 2)]) if sys.modules[namespace].__archinstall__version__ < archinstall_major_and_minor_version: log(f"Plugin {sys.modules[namespace]} does not support the current Archinstall version.", fg="red", level=logging.ERROR) # Locate the plugin entry-point called Plugin() # This in accordance with the entry_points() from setup.cfg above if hasattr(sys.modules[namespace], 'Plugin'): try: plugins[namespace] = sys.modules[namespace].Plugin() log(f"Plugin {plugins[namespace]} has been loaded.", fg="gray", level=logging.INFO) except Exception as err: log(f'Error: {err}', level=logging.ERROR) log(f"The above error was detected when initiating the plugin: {path}", fg="red", level=logging.ERROR) else: log(f"Plugin '{path}' is missing a valid entry-point or is corrupt.", fg="yellow", level=logging.WARNING)