# coding: utf-8 from __future__ import print_function from __future__ import division from __future__ import absolute_import import os import re import glob import errno from clselect.baseclselect import BaseSelectorError # Used both for config and some state like available_versions cache # mainly because it's easier to put it in cagefs as a one dir # We have symlink to that dir in /etc # for ease of use the selector config and avoiding problem with cagefs CONFIG_DIR = '/usr/share/l.v.e-manager/cl.nodejs' ALT_NAMES = 'alt-nodejs' # It's also used to construct base_dir: ALT_NODE_PREFIX = '/opt/alt/{}'.format(ALT_NAMES) # This file is specifically created during package build and contains # full version in the tail of a name NODE_VERSION_GLOB = '/root/usr/share/node/node-version-' class NodeJSError(BaseSelectorError): """Top level error class for admin's part of NodeJS selector""" pass class NodeJSConfigError(NodeJSError): """Generic error class for NodeConfig""" pass def is_major_version(ver): """Return True if specified MAJOR version is valid for processing""" if not isinstance(ver, str): return False if not re.match(r'^[1-9][0-9]*$', ver): return False return True def create_config_dirs(): try: os.makedirs(CONFIG_DIR) except OSError as e: if e.errno != errno.EEXIST: # ignore only "File exists" error raise def scan_node_versions(): """ Search CL NodeJS interpreters and return dict with info about them """ res = {} for folder in glob.glob('{}*{}*'.format(ALT_NODE_PREFIX, NODE_VERSION_GLOB)): full_ver = folder.split(NODE_VERSION_GLOB)[1] if not full_ver: # Only when package is broken continue maj_ver = str(int(full_ver.split('.')[0])) res[maj_ver] = { 'full_version': full_ver, 'root_path': '{}{}/root'.format(ALT_NODE_PREFIX, maj_ver), } return res