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cli: Automatic command discovery for leapp CLI #700

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Merged
pirat89 merged 1 commit into from
May 31, 2021
Merged

cli: Automatic command discovery for leapp CLI #700

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31 changes: 25 additions & 6 deletions leapp/cli/__init__.py
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Original file line number Diff line number Diff line change
@@ -1,18 +1,37 @@

import os
import pkgutil
import socket

from leapp.utils.clicmd import command, command_opt
from leapp.cli import upgrade
from leapp import VERSION
from leapp.cli import commands
from leapp.utils.clicmd import command


@command('')
def cli(args): # noqa; pylint: disable=unused-argument
pass
def cli(args): # noqa; pylint: disable=unused-argument
"""
Top level base command dummy function
"""


def _load_commands(base_command):
pkgdir = os.path.dirname(commands.__file__)
for entry in os.listdir(pkgdir):
entry_path = os.path.join(pkgdir, entry)
if os.path.isdir(entry_path) and os.path.isfile(os.path.join(entry_path, '__init__.py')):
# We found a package - We will import it and get the `register` symbol and check if it is callable.
package_name = 'leapp.cli.commands.{}'.format(entry)
package = pkgutil.get_loader(package_name).load_module(package_name)
register = getattr(package, 'register', None)
if callable(register):
register(base_command)


def main():
"""
leapp entry point
"""
os.environ['LEAPP_HOSTNAME'] = socket.getfqdn()
for cmd in [upgrade.list_runs, upgrade.preupgrade, upgrade.upgrade, upgrade.answer, upgrade.rerun]:
cli.command.add_sub(cmd.command)
_load_commands(cli.command)
cli.command.execute('leapp version {}'.format(VERSION))
Empty file added leapp/cli/commands/__init__.py
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