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Mini Shell
# coding=utf-8
#
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2021 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENCE.TXT
#
from __future__ import absolute_import
import os
from abc import abstractmethod
from typing import Dict, List, Optional # NOQA
from clcommon import cpapi
from clcommon.group_info_reader import GroupInfoReader
from clcommon.lib.cledition import is_ubuntu
from clcommon.utils import (
ExternalProgramFailed,
get_cl_version,
get_package_db_errors,
get_passenger_package_name,
is_ea4,
is_package_installed,
run_command,
)
from clwizard.exceptions import InstallationFailedException
from clwizard.utils import convert_package_version, setup_logger
class WizardInstaller(object):
"""
General interface for modules installers
"""
LOG_FILE = ""
_REQUIRED_CL_COMPONENT_SUPPORT = None
def __init__(self):
self.app_logger = setup_logger('wizard.' + self.__class__.__name__, self.LOG_FILE)
def _run_command(self, cmd, cmd_env=None):
# type: (List[str]) -> str
"""Run external tool and log results"""
self.app_logger.info('~' * 60)
self.app_logger.info("Executing command %s...", ' '.join(cmd))
try:
output = run_command(cmd, env_data=cmd_env)
except ExternalProgramFailed as err:
self.app_logger.info(
"...external command failed, see the following lines for tracebacks, errors, etc."
)
self.app_logger.error(str(err))
raise
else:
self.app_logger.info("...external command successfully ended with output:")
self.app_logger.info(output)
self.app_logger.info('-' * 60)
return output
def _is_package_installed(self, package_name):
# type: (str) -> bool
"""Check if package exists on server"""
error_message = get_package_db_errors()
if error_message:
# DB corrupted
log_message = f"Can't check package {package_name} presence. Errors:\n{error_message}"
self.app_logger.error(log_message)
raise InstallationFailedException()
return is_package_installed(package_name)
def _install_package(self, *packages):
# type: (str) -> Optional[str]
"""Install a package and log results"""
if is_ubuntu():
return self._install_apt_package(*packages)
else:
return self._install_yum_package(*packages)
def _install_apt_package(self, *packages):
# type: (str) -> Optional[str]
"""Install an apt package and log results"""
apt_env = {}
# For debconf to avoid making any interactive queries.
apt_env['DEBIAN_FRONTEND'] = 'noninteractive'
apt_env['DEBCONF_NONINTERACTIVE_SEEN'] = 'true'
if packages:
return self._run_command(['apt-get', 'install', '-y'] + list(packages), cmd_env=apt_env)
return None
def _install_yum_package(self, *packages):
# type: (str) -> Optional[str]
"""Install a yum package and log results"""
if packages:
return self._run_command(['yum', 'install', '-y'] + list(packages))
return None
def _install_groups(self, *groups):
# type: (str) -> Optional[str]
"""
Install a package group.
At the moment, DEB metapackages are not supported, and
provided names are simply installed as normal packages.
This will change in the future.
"""
if is_ubuntu():
return self._install_apt_package(*groups)
else:
return self._install_yum_groups(*groups)
def _install_yum_groups(self, *groups):
# type: (str) -> Optional[str]
"""Install package group with yum and log results"""
if groups:
return self._run_command(['yum', 'groupinstall', '-y'] + list(groups))
return None
def _ensure_cl_ea4_repo_exists(self):
"""
Check whether cloudlinux-ea4.repo is present and install it if not.
It's required only on EA4 to install proper Passenger package
"""
# LU-3364: should also be made compatible with Ubuntu, once Python/Node/Ruby selector
# support comes into play.
cl_ea4_repofile = "/etc/yum.repos.d/cloudlinux-ea4.repo"
if os.path.exists(cl_ea4_repofile):
return
dist = get_cl_version() or 'Unknown'
if '7' in dist:
dist_maj_ver = '7'
elif '6' in dist:
dist_maj_ver = '6'
else:
raise InstallationFailedException("Failed to get the distribution's major version")
package_url = (
"https://repo.cloudlinux.com/cloudlinux/EA4/"
f"cloudlinux-ea4-release-latest-{dist_maj_ver}.noarch.rpm"
)
self.app_logger.info(
"Unable to find cloudlinux-ea4 repo. Trying to install it using url: %s", package_url
)
self._install_yum_package(package_url)
def _install_passenger(self):
"""
Install proper passenger package for Selectors if it's not yet
installed
"""
# LU-3364: should also be made compatible with Ubuntu, once Python/Node/Ruby selector
# support comes into play.
if is_ea4():
self._ensure_cl_ea4_repo_exists()
passenger = get_passenger_package_name()
self.app_logger.info("Trying to install Passenger package: %s", passenger)
try:
self._install_yum_package(passenger)
except ExternalProgramFailed as extern_failed:
raise InstallationFailedException() from extern_failed
@staticmethod
def _get_available_versions(group):
# type: (str) -> List
"""
Get a list of available Python, NodeJS, PHP or Ruby module versions.
:param group: - group name, e.g: python
:return: list of available versions
"""
available_groups_info = GroupInfoReader.get_group_info(group)
versions = []
# we need to format version:
# python: 2.3.3 -> 2.3
# ruby: 2.1.1 -> 2.1
# php: 7.2.0 -> 7.2
# nodejs: 8.1.0 -> 8
ver_size = 1 if group == 'nodejs' else 2
for group_data in available_groups_info.values():
versions.append(convert_package_version(group_data['version'], version_size=ver_size))
return versions
@abstractmethod
def run_installation(self, options):
# type: (Dict) -> None
raise NotImplementedError()
@classmethod
def supported_options(cls):
return set()
@abstractmethod
def initial_status(self):
# type: () -> Dict
"""
Method that returns dictionary with two required keys:
{installed: True|False and options: {...}]
This will be used by lvemanager to properly display wizard.
"""
raise NotImplementedError()
@classmethod
def is_supported_by_control_panel(cls):
"""
Checks whether we must
:return:
"""
if cls._REQUIRED_CL_COMPONENT_SUPPORT is None:
return True
return cpapi.is_panel_feature_supported(cls._REQUIRED_CL_COMPONENT_SUPPORT)
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