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Viewing File: /usr/share/l.v.e-manager/utils/fix-nodejs-environments.py

#!/opt/cloudlinux/venv/bin/python3 -bb
# 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 sys
from future.utils import iteritems

from clcommon.clpwd import ClPwd
from clselect.clselectctlnodejsuser import _create_environment
from clselect.clselectexcept import ClSelectExcept
from clselect.clselectnodejs import scan_node_versions
from clselect.clselectnodejs.apps_manager import ApplicationsManager

WRAPPERS_VERSION_FILE = '/usr/share/l.v.e-manager/utils/nodejs_selector_wrappers_version'

# Increment when introducing incompatible changes to nodejs virtualenv
LAST_WRAPPERS_VERSION = 1


def is_alt_nodejs_installed():
    return scan_node_versions() != {}


def get_wrappers_version():
    """
    Return the version of wrappers used in existing apps

    :rtype: int or None
    """
    try:
        with open(WRAPPERS_VERSION_FILE, 'r') as f:
            version = f.read()
    except (IOError, OSError):
        return None
    else:
        try:
            return int(version)
        except ValueError:
            return None


def set_wrappers_version(wrappers_version=LAST_WRAPPERS_VERSION):
    """
    Save the last wrappers version introducing incompatibility

    :rtype: None
    """
    try:
        with open(WRAPPERS_VERSION_FILE, 'w') as f:
            f.write("{}".format(wrappers_version))
    except (IOError, OSError):
        pass


def main():

    if not is_alt_nodejs_installed():
        sys.exit(0)

    current_version = get_wrappers_version()
    if current_version is not None and current_version >= LAST_WRAPPERS_VERSION:
        sys.exit(0)

    clpwd = ClPwd()
    clpwd.get_user_dict()
    users = clpwd.get_user_dict()
    apps_manager = ApplicationsManager()
    for user in users:
        try:
            user_config = apps_manager.get_user_config_data(user)
        except ClSelectExcept.WrongData:
            pass
        for approot, app_info in iteritems(user_config):
            try:
                _create_environment(user, approot, app_info['nodejs_version'], destroy_first=True)
            except ClSelectExcept.NoSuchAlternativeVersion:
                continue
    set_wrappers_version(LAST_WRAPPERS_VERSION)


if __name__ == "__main__":
    main()
    sys.exit(0)
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