73 lines
2 KiB
Python
73 lines
2 KiB
Python
# system
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import logging
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import subprocess
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# local
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from . import subcommands
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from .executable import Executable
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from .parser import Parser
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class Runner:
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"""Singleton: Subcommands setup and run"""
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class __Runner:
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"""Singleton type"""
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__commands = []
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def __init__(self):
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# probe for Docker access
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try:
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Executable('docker').run([
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'ps'
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], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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except subprocess.CalledProcessError:
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logging.critical("Cannot access docker, please get into the docker group or run as root!")
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quit(1)
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# setup all subcommands
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for className in subcommands.__all__:
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cmd = getattr(subcommands, className)
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self.__commands.append(cmd())
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def run(self, command=None, args=None):
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"""run the desired subcommand"""
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if args is None:
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args = Parser().get_args()
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if command is None:
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command = args.command
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for cmd in self.__commands:
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if str(cmd) == command:
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# command found
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logging.debug(f"Running '{cmd}' with args: {args}")
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try:
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result = cmd.run(self, args)
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except KeyboardInterrupt:
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print()
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logging.warning(f"'{cmd}' aborted, inputs may have been discarded.")
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result = False
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return result
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# command not found
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logging.error(f"kiwi command '{command}' unknown")
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return False
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__instance = None
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def __init__(self):
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if Runner.__instance is None:
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# create singleton
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Runner.__instance = Runner.__Runner()
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def __getattr__(self, item):
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"""Inner singleton direct access"""
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return getattr(self.__instance, item)
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