Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

173 lines (136 sloc) 5.958 kb
# Copyright 2013 OpenStack Foundation
# Copyright 2013 IBM Corp.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Provides methods needed by installation script for OpenStack development
virtual environments.
Since this script is used to bootstrap a virtualenv from the system's Python
environment, it should be kept strictly compatible with Python 2.6.
Synced in from openstack-common
"""
from __future__ import print_function
import optparse
import os
import subprocess
import sys
class InstallVenv(object):
def __init__(self, root, venv, requirements,
test_requirements, py_version,
project):
self.root = root
self.venv = venv
self.requirements = requirements
self.test_requirements = test_requirements
self.py_version = py_version
self.project = project
def die(self, message, *args):
print(message % args, file=sys.stderr)
sys.exit(1)
def check_python_version(self):
if sys.version_info < (2, 6):
self.die("Need Python Version >= 2.6")
def run_command_with_code(self, cmd, redirect_output=True,
check_exit_code=True):
"""Runs a command in an out-of-process shell.
Returns the output of that command. Working directory is self.root.
"""
if redirect_output:
stdout = subprocess.PIPE
else:
stdout = None
proc = subprocess.Popen(cmd, cwd=self.root, stdout=stdout)
output = proc.communicate()[0]
if check_exit_code and proc.returncode != 0:
self.die('Command "%s" failed.\n%s', ' '.join(cmd), output)
return (output, proc.returncode)
def run_command(self, cmd, redirect_output=True, check_exit_code=True):
return self.run_command_with_code(cmd, redirect_output,
check_exit_code)[0]
def get_distro(self):
if (os.path.exists('/etc/fedora-release') or
os.path.exists('/etc/redhat-release')):
return Fedora(
self.root, self.venv, self.requirements,
self.test_requirements, self.py_version, self.project)
else:
return Distro(
self.root, self.venv, self.requirements,
self.test_requirements, self.py_version, self.project)
def check_dependencies(self):
self.get_distro().install_virtualenv()
def create_virtualenv(self, no_site_packages=True):
"""Creates the virtual environment and installs PIP.
Creates the virtual environment and installs PIP only into the
virtual environment.
"""
if not os.path.isdir(self.venv):
print('Creating venv...', end=' ')
if no_site_packages:
self.run_command(['virtualenv', '-q', '--no-site-packages',
self.venv])
else:
self.run_command(['virtualenv', '-q', self.venv])
print('done.')
else:
print("venv already exists...")
pass
def pip_install(self, *args):
self.run_command(['tools/with_venv.sh',
'pip', 'install', '--upgrade'] + list(args),
redirect_output=False)
def install_dependencies(self):
print('Installing dependencies with pip (this can take a while)...')
# First things first, make sure our venv has the latest pip and
# setuptools and pbr
self.pip_install('pip>=1.4')
self.pip_install('setuptools')
self.pip_install('pbr')
self.pip_install('-r', self.requirements, '-r', self.test_requirements)
def parse_args(self, argv):
"""Parses command-line arguments."""
parser = optparse.OptionParser()
parser.add_option('-n', '--no-site-packages',
action='store_true',
help="Do not inherit packages from global Python "
"install")
return parser.parse_args(argv[1:])[0]
class Distro(InstallVenv):
def check_cmd(self, cmd):
return bool(self.run_command(['which', cmd],
check_exit_code=False).strip())
def install_virtualenv(self):
if self.check_cmd('virtualenv'):
return
if self.check_cmd('easy_install'):
print('Installing virtualenv via easy_install...', end=' ')
if self.run_command(['easy_install', 'virtualenv']):
print('Succeeded')
return
else:
print('Failed')
self.die('ERROR: virtualenv not found.\n\n%s development'
' requires virtualenv, please install it using your'
' favorite package management tool' % self.project)
class Fedora(Distro):
"""This covers all Fedora-based distributions.
Includes: Fedora, RHEL, CentOS, Scientific Linux
"""
def check_pkg(self, pkg):
return self.run_command_with_code(['rpm', '-q', pkg],
check_exit_code=False)[1] == 0
def install_virtualenv(self):
if self.check_cmd('virtualenv'):
return
if not self.check_pkg('python-virtualenv'):
self.die("Please install 'python-virtualenv'.")
super(Fedora, self).install_virtualenv()
Jump to Line
Something went wrong with that request. Please try again.