369 lines
10 KiB
Python
369 lines
10 KiB
Python
import argparse
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import contextlib
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import json
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import subprocess
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import threading
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from collections.abc import Callable, Iterable
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from types import ModuleType
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from typing import Any
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from clan_lib.cmd import run
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from clan_lib.flake.flake import Flake
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from clan_lib.nix import nix_eval
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from clan_lib.persist.inventory_store import InventoryStore
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"""
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This module provides dynamic completions.
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The completions should feel fast.
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We target a maximum of 1second on our average machine.
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"""
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argcomplete: ModuleType | None = None
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with contextlib.suppress(ImportError):
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import argcomplete # type: ignore[no-redef]
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# The default completion timeout for commands
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COMPLETION_TIMEOUT: int = 3
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def clan_dir(flake: str | None) -> str | None:
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from clan_lib.dirs import get_clan_flake_toplevel_or_env
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path_result = get_clan_flake_toplevel_or_env()
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return str(path_result) if path_result is not None else None
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def complete_machines(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for machine names configured in the clan.
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"""
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machines: list[str] = []
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def run_cmd() -> None:
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try:
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if (clan_dir_result := clan_dir(None)) is not None:
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flake = clan_dir_result
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else:
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flake = "."
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inventory = InventoryStore(Flake(str(flake))).read()
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machines.extend(inventory.get("machines", {}).keys())
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except subprocess.CalledProcessError:
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pass
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thread = threading.Thread(target=run_cmd)
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thread.start()
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thread.join(timeout=COMPLETION_TIMEOUT)
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if thread.is_alive():
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return iter([])
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machines_dict = dict.fromkeys(machines, "machine")
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return machines_dict
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def complete_services_for_machine(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for machine facts generation services.
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"""
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services: list[str] = []
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# TODO: consolidate, if multiple machines are used
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machines: list[str] = parsed_args.machines
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def run_cmd() -> None:
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try:
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if (clan_dir_result := clan_dir(None)) is not None:
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flake = clan_dir_result
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else:
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flake = "."
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services_result = json.loads(
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run(
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nix_eval(
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flags=[
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f"{flake}#nixosConfigurations.{machines[0]}.config.clan.core.facts.services",
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"--apply",
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"builtins.attrNames",
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],
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),
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).stdout.strip()
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)
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services.extend(services_result)
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except subprocess.CalledProcessError:
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pass
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thread = threading.Thread(target=run_cmd)
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thread.start()
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thread.join(timeout=COMPLETION_TIMEOUT)
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if thread.is_alive():
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return iter([])
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services_dict = dict.fromkeys(services, "service")
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return services_dict
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def complete_backup_providers_for_machine(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for machine backup providers.
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"""
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providers: list[str] = []
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machine: str = parsed_args.machine
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def run_cmd() -> None:
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try:
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if (clan_dir_result := clan_dir(None)) is not None:
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flake = clan_dir_result
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else:
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flake = "."
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providers_result = json.loads(
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run(
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nix_eval(
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flags=[
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f"{flake}#nixosConfigurations.{machine}.config.clan.core.backups.providers",
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"--apply",
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"builtins.attrNames",
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],
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),
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).stdout.strip()
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)
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providers.extend(providers_result)
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except subprocess.CalledProcessError:
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pass
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thread = threading.Thread(target=run_cmd)
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thread.start()
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thread.join(timeout=COMPLETION_TIMEOUT)
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if thread.is_alive():
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return iter([])
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providers_dict = dict.fromkeys(providers, "provider")
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return providers_dict
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def complete_state_services_for_machine(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for machine state providers.
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"""
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providers: list[str] = []
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machine: str = parsed_args.machine
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def run_cmd() -> None:
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try:
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if (clan_dir_result := clan_dir(None)) is not None:
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flake = clan_dir_result
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else:
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flake = "."
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providers_result = json.loads(
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run(
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nix_eval(
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flags=[
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f"{flake}#nixosConfigurations.{machine}.config.clan.core.state",
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"--apply",
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"builtins.attrNames",
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],
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),
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).stdout.strip()
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)
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providers.extend(providers_result)
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except subprocess.CalledProcessError:
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pass
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thread = threading.Thread(target=run_cmd)
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thread.start()
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thread.join(timeout=COMPLETION_TIMEOUT)
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if thread.is_alive():
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return iter([])
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providers_dict = dict.fromkeys(providers, "service")
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return providers_dict
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def complete_secrets(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for clan secrets
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"""
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from clan_lib.flake.flake import Flake
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from .secrets.secrets import list_secrets
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flake = clan_dir_result if (clan_dir_result := clan_dir(None)) is not None else "."
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secrets = list_secrets(Flake(flake).path)
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secrets_dict = dict.fromkeys(secrets, "secret")
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return secrets_dict
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def complete_users(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for clan users
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"""
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from pathlib import Path
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from .secrets.users import list_users
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flake = clan_dir_result if (clan_dir_result := clan_dir(None)) is not None else "."
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users = list_users(Path(flake))
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users_dict = dict.fromkeys(users, "user")
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return users_dict
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def complete_groups(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for clan groups
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"""
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from pathlib import Path
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from .secrets.groups import list_groups
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flake = clan_dir_result if (clan_dir_result := clan_dir(None)) is not None else "."
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groups_list = list_groups(Path(flake))
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groups = [group.name for group in groups_list]
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groups_dict = dict.fromkeys(groups, "group")
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return groups_dict
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def complete_target_host(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for target_host for a specific machine
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"""
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target_hosts: list[str] = []
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machine: str = parsed_args.machine
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def run_cmd() -> None:
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try:
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if (clan_dir_result := clan_dir(None)) is not None:
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flake = clan_dir_result
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else:
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flake = "."
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target_host_result = json.loads(
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run(
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nix_eval(
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flags=[
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f"{flake}#nixosConfigurations.{machine}.config.clan.core.networking.targetHost",
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],
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),
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).stdout.strip()
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)
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target_hosts.append(target_host_result)
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except subprocess.CalledProcessError:
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pass
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thread = threading.Thread(target=run_cmd)
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thread.start()
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thread.join(timeout=COMPLETION_TIMEOUT)
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if thread.is_alive():
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return iter([])
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providers_dict = dict.fromkeys(target_hosts, "target_host")
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return providers_dict
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def complete_tags(
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prefix: str, parsed_args: argparse.Namespace, **kwargs: Any
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) -> Iterable[str]:
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"""
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Provides completion functionality for tags inside the inventory
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"""
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tags: list[str] = []
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threads = []
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def run_computed_tags_cmd() -> None:
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try:
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if (clan_dir_result := clan_dir(None)) is not None:
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flake = clan_dir_result
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else:
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flake = "."
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inventory_store = InventoryStore(Flake(str(flake)))
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inventory = inventory_store.get_readonly_raw()
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if "tags" in inventory:
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tags.extend(inventory["tags"].keys())
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except subprocess.CalledProcessError:
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pass
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def run_machines_tags_cmd() -> None:
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machine_tags: list[str] = []
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try:
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if (clan_dir_result := clan_dir(None)) is not None:
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flake = clan_dir_result
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else:
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flake = "."
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inventory_store = InventoryStore(Flake(str(flake)))
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inventory = inventory_store.get_readonly_raw()
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machine_tags_result = inventory.get("machines")
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if machine_tags_result is None:
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return
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for machine in machine_tags_result.values():
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machine_tags.extend(machine.get("tags", []))
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tags.extend(machine_tags)
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except subprocess.CalledProcessError:
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pass
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def start_thread(target_function: Callable) -> threading.Thread:
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thread = threading.Thread(target=target_function)
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thread.start()
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return thread
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functions_to_run = [
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run_computed_tags_cmd,
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run_machines_tags_cmd,
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]
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threads = [start_thread(func) for func in functions_to_run]
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for thread in threads:
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thread.join(timeout=COMPLETION_TIMEOUT)
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if any(thread.is_alive() for thread in threads):
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return iter([])
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providers_dict = dict.fromkeys(tags, "tag")
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return providers_dict
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def add_dynamic_completer(
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action: argparse.Action,
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completer: Callable[..., Iterable[str]],
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) -> None:
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"""
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Add a completion function to an argparse action, this will only be added,
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if the argcomplete module is loaded.
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"""
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if argcomplete:
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# mypy doesn't check this correctly, so we ignore it
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action.completer = completer # type: ignore[attr-defined]
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