82 lines
2 KiB
Python
82 lines
2 KiB
Python
import functools
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import re
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from pathlib import Path
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from typing import List, Dict, Any, Generator
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import attr
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import click
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import ruamel.yaml
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from ._constants import COMPOSE_FILE_NAME
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from .config import Config
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_RE_CONFDIR = re.compile(r"^\s*\$(?:CONFDIR|{CONFDIR})/+(.*)$", flags=re.UNICODE)
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@attr.s
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class Service:
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name: str = attr.ib()
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configs: List[Path] = attr.ib()
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@classmethod
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def from_description(cls, name: str, description: Dict[str, Any]):
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configs: List[Path] = []
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if "volumes" in description:
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volumes: List[str] = description["volumes"]
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for volume in volumes:
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host_part = volume.split(":")[0]
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confdir = _RE_CONFDIR.match(host_part)
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if confdir:
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configs.append(Path(confdir.group(1)))
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return cls(
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name=name,
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configs=configs,
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)
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@attr.s
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class Project:
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directory: Path = attr.ib()
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services: List[Service] = attr.ib()
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@classmethod
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@functools.lru_cache(maxsize=10)
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def from_directory(cls, directory: Path):
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with open(directory.joinpath(COMPOSE_FILE_NAME), "r") as cf:
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yml = ruamel.yaml.round_trip_load(cf)
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return cls(
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directory=directory,
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services=[
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Service.from_description(name, description)
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for name, description in yml["services"].items()
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],
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)
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@attr.s
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class Instance:
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directory: Path = attr.ib(default=Path('.'))
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@property
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def config(self) -> Config:
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"""shorthand: get the current configuration"""
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return Config.from_directory(self.directory)
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def get_project(self, name: str) -> Project:
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return Project.from_directory(self.directory.joinpath(name))
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@property
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def projects(self) -> Generator[Project, None, None]:
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return (
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self.get_project(project.name)
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for project in self.config.projects
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)
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pass_instance = click.make_pass_decorator(Instance, ensure=True)
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