docker-tidy/dockertidy/Cli.py

99 lines
3.5 KiB
Python

#!/usr/bin/env python3
"""Entrypoint and CLI handler."""
import argparse
import logging
import os
import sys
from importlib_metadata import PackageNotFoundError
from importlib_metadata import version
import dockertidy.Exception
from dockertidy import __version__
from dockertidy.Config import SingleConfig
from dockertidy.Utils import SingleLog
from dockertidy.Utils import timedelta_type
class DockerTidy:
def __init__(self):
self.log = SingleLog()
self.logger = self.log.logger
self.args = self._cli_args()
self.config = self._get_config()
def _cli_args(self):
"""
Use argparse for parsing CLI arguments.
:return: args objec
"""
parser = argparse.ArgumentParser(
description="Generate documentation from annotated Ansible roles using templates")
parser.add_argument("-v", dest="logging.level", action="append_const", const=-1,
help="increase log level")
parser.add_argument("-q", dest="logging.level", action="append_const",
const=1, help="decrease log level")
parser.add_argument("--version", action="version",
version="%(prog)s {}".format(__version__))
subparsers = parser.add_subparsers(help="sub-command help")
parser_gc = subparsers.add_parser(
"gc", help="Run docker garbage collector.")
parser_gc.add_argument(
"--max-container-age",
type=timedelta_type,
help="Maximum age for a container. Containers older than this age "
"will be removed. Age can be specified in any pytimeparse "
"supported format.")
parser_gc.add_argument(
"--max-image-age",
type=timedelta_type,
help="Maxium age for an image. Images older than this age will be "
"removed. Age can be specified in any pytimeparse supported "
"format.")
parser_gc.add_argument(
"--dangling-volumes",
action="store_true",
help="Dangling volumes will be removed.")
parser_gc.add_argument(
"--dry-run", action="store_true",
help="Only log actions, don't remove anything.")
parser_gc.add_argument(
"-t", "--timeout", type=int, default=60,
help="HTTP timeout in seconds for making docker API calls.")
parser_gc.add_argument(
"--exclude-image",
action="append",
help="Never remove images with this tag.")
parser_gc.add_argument(
"--exclude-image-file",
type=argparse.FileType("r"),
help="Path to a file which contains a list of images to exclude, one "
"image tag per line.")
parser_gc.add_argument(
"--exclude-container-label",
action="append", type=str, default=[],
help="Never remove containers with this label key or label key=value")
return parser.parse_args().__dict__
def _get_config(self):
try:
config = SingleConfig(args=self.args)
except dockertidy.Exception.ConfigError as e:
self.log.sysexit_with_message(e)
try:
self.log.set_level(config.config["logging"]["level"])
except ValueError as e:
self.log.sysexit_with_message(
"Can not set log level.\n{}".format(str(e)))
self.logger.info("Using config file {}".format(config.config_file))
return config