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# -*- 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 os
import re
from clselect.clselectexcept import ClSelectExcept
class Interpreter(object):
def __init__(self, prefix, versions_info=None):
"""
:param prefix: mandatory prefix for nodejs root
:param versions_info: optional precomputed dict with handy info
about versions
"""
if versions_info is None:
from clselect.clselectnodejs import scan_node_versions
versions_info = scan_node_versions()
self.prefix = prefix
# Guess two things at once:
self.is_venv = self._guess_version_by_prefix()
# Our NodeJS interpreters is always in usr/bin on both CL6/CL7, but
# this code is also called for virtual environments that use
# different path
if self.is_venv:
folder_ = 'bin'
else:
folder_ = 'usr/bin'
self.binary = os.path.join(self.prefix, folder_, 'node')
if not os.path.isfile(self.binary):
raise ClSelectExcept.InterpreterError(
'Cannot find node binary: %s' % self.binary)
self.version_full = versions_info[self.version]['full_version']
def _guess_version_by_prefix(self):
# Example prefixes:
# /opt/alt/alt-nodejs6/root
# /home/<user>/nodevenv/<app_root>/6
if self.prefix.startswith('/opt/alt'):
venv = False
pattern = r'/opt/alt/alt-nodejs(\d+)/root'
else:
venv = True
pattern = r'.+/nodevenv/.+/(\d+)'
self.version = re.findall(pattern, self.prefix)[0]
return venv
def __repr__(self):
return (
"%s.%s(prefix='%s', version='%s', binary='%s', "
"version_full='%s')" % (
self.__class__.__module__, self.__class__.__name__,
self.prefix, self.version, self.binary, self.version_full
))
def as_dict(self, key=None):
i = {
'prefix': self.prefix,
'binary': self.binary,
'version': self.version,
'version_full': self.version_full,
}
if key:
del i[key]
return {getattr(self, key): i}
return i
def interpreters(key=None):
interps = []
from clselect.clselectnodejs import scan_node_versions
versions_info = scan_node_versions()
for ver_info in versions_info.values():
try:
interpreter = Interpreter(ver_info['root_path'], versions_info)
except ClSelectExcept.InterpreterError:
continue
interps.append(interpreter)
if key:
return dict((getattr(i, key), i) for i in interps)
else:
return interps
def interpreters_dict(key):
return dict(list(i.as_dict(key).items())[0] for i in interpreters())
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