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File Manager
File Manager
Viewing File: pkgmanager.py
# coding=utf-8
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT
from __future__ import print_function
from __future__ import division
from __future__ import absolute_import
import re
from clselect.baseclselect.pkgmanager import BasePkgManager
from . import (
scan_python_versions,
is_major_version,
CONFIG_DIR,
create_config_dirs,
ALT_NAMES,
ALT_PYTHON_PREFIX)
class PkgManager(BasePkgManager):
"""
Class responsible for all interactions with Yum, python version
installation/removal and gathering info about already installed versions
"""
def _create_config_dirs(self):
create_config_dirs()
_config_dir = CONFIG_DIR
# We should disable all repos but CL's, because Yum will not list anything
# if some repo is broken
# TODO We'll improve "Refresh UI button" and implement respective
# command/option to reset both yum cache and ours in a separate task.
# {yum_cmd} clean all --disablerepo='*' --enablerepo='cloudlinux-*';
# https://unix.stackexchange.com/questions/4578/yum-update-error-cant-start-new-thread
_yum_cmd = 'LANG=C yum --disableplugin=fastestmirror '
_alt_names = ALT_NAMES
_redirect_log = '&>/var/log/cl-python-last-yum.log'
# _redirect_log = ''
_install_cmd = ''.join([
_yum_cmd,
'-y install ',
_alt_names, '{} ',
_redirect_log,
])
_remove_cmd = ''.join([
_yum_cmd,
'-y remove ',
_alt_names, '{} ',
_redirect_log,
])
def _scan_interpreter_versions(self):
return scan_python_versions()
def _get_lock_file_path(self, version):
return ALT_PYTHON_PREFIX + '{}/.lock'.format(
version.replace('.', ''))
def checkout_available(self):
"""
Should return list of major versions available to install from
currently enabled repos.
Note, this can be an empty list if no NodeJS version has been
released to repos yet or in case of network/repos/yum problem.
OR
None if our cache is updating right now because it was
absent/outdated/corrupted/etc.
:rtype: list | None
"""
# Data example:
# alt-python27\n
# alt-python34\n
# alt-python36\n
data = self._read_yum_cache()
if not data: # No cache, broken cache, outdated cache etc.
self.update_yum_cache()
return None
available = re.findall('alt-python(\d+)', data)
available = ['.'.join([version[0], version[1:]]) for version in available]
return available
def _verify_action(self, version):
"""Do some common pre-installation/uninstallation checks"""
if not is_major_version(version):
return 'Invalid version "{}". ' \
'It should be two digits separeted by dot'.format(version)
working_error = self._check_yum_in_progress()
if working_error:
return working_error
def format_cmd_string_for_installing(self, version):
"""
Formatting cmd string for install package
:return: formatted cmd string
:param version: version of interpreter for installing
:rtype: str
"""
return self._install_cmd.format(version.replace('.', ''))
def format_cmd_string_for_removing(self, version):
"""
Formatting cmd string for removing package
:return: formatted cmd string
:param version: version of interpreter for removing
:rtype: str
"""
return self._remove_cmd.format(version.replace('.', ''))
@staticmethod
def _is_version_in_use(version):
# type: (str) -> bool
"""
Check what passed version isn't used any web-application
"""
from clselect.clselectpython.apps_manager import ApplicationsManager
apps_manager = ApplicationsManager()
return apps_manager.is_version_in_use(version)
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