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Mini Shell
Mini Shell
# 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 absolute_import
from __future__ import print_function
from __future__ import division
import os
from abc import ABCMeta
from future.utils import iteritems
from clselect.baseclselect import (
ENABLED_STATUS,
NOT_INSTALLED_STATUS
)
from .config import BaseSelectorConfig # NOQA
from .pkgmanager import BasePkgManager # NOQA
from future.utils import with_metaclass
class BaseSelectorManager(with_metaclass(ABCMeta, object)):
"""Responsible for actual interpreter selector high-level API"""
def __init__(self, cfg, pkg):
"""
:type cfg: config.BaseSelectorConfig
:type pkg: pkgmanager.BasePkgManager
"""
self.pkg = pkg # type: BasePkgManager
self.cfg = cfg # type: BaseSelectorConfig
self.is_root_user = os.geteuid() == 0
@property
def selector_enabled(self):
return self.cfg.selector_enabled
@selector_enabled.setter
def selector_enabled(self, val):
self.cfg.selector_enabled = val
self.cfg.save()
@property
def default_version(self):
return self.cfg.get_default_version()
def switch_default_version(self, version):
self.cfg.set_default_version(version)
self.cfg.save()
def set_version_status(self, version, status):
"""Disable/Enable particular interpreter version globally"""
self.cfg.set_version_status(version, status)
self.cfg.save()
def is_version_enabled(self, version):
"""Check whether particular (installed) version is enabled"""
enabled = [k for k, v in iteritems(self.cfg.available_versions)
if v['status'] == ENABLED_STATUS]
return version in enabled
def install_version(self, version):
return self.pkg.install_version(version)
def uninstall_version(self, version):
if version == self.cfg.get_default_version():
return "It's not allowed to uninstall default version"
return self.pkg.remove_version(version)
def get_summary(self, installed_interpreters_only=False):
all_versions = self.cfg.available_versions
available_to_install = []
if not installed_interpreters_only and self.is_root_user:
# Only root can see "in progress" and "not installed yet" versions
# We may change this in future if we have such requirement
processed_now = self.pkg.in_progress()
if processed_now:
all_versions.update(processed_now)
available_to_install = self.pkg.checkout_available()
if available_to_install:
available_to_install = set(available_to_install)
installed_and_in_progress = set(all_versions.keys())
diff = {
ver: {'base_dir': '', 'status': NOT_INSTALLED_STATUS}
for ver in (available_to_install - installed_and_in_progress)
}
all_versions.update(diff)
# Prettify output by converting Major version to Full versions
# if possible
all_versions = {self.pkg.get_full_version(k): v
for k, v in iteritems(all_versions)}
if "" in all_versions:
all_versions.pop("")
return {
'default_version': self.cfg.get_default_version(),
'available_versions': all_versions,
# `Updating` means pkg info is not available right now and we
# already started background process to rebuild that cache.
# Once it finished status becomes `ready` again.
# If we run as user it's always `ready`
'cache_status': ('updating' if available_to_install is None
else 'ready'),
'selector_enabled': self.selector_enabled,
}
Zerion Mini Shell 1.0