Remove last vestiges of oslo-incubator
This is a community goal for Ocata. We're already not using any of the code, but there are some other files and references left over. This file used to be installed from oslo-incubator: tools/install_venv_common.py It was meant to be used by the legacy run_tests.sh, which does not exist in this repo. Change-Id: I5040101102167ae3c2701019ceaad8bf8833a3c1 Partial-Bug: #1639103
This commit is contained in:
Henry Gessau
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# Copyright 2013 OpenStack Foundation
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# Copyright 2013 IBM Corp.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Provides methods needed by installation script for OpenStack development
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virtual environments.
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Since this script is used to bootstrap a virtualenv from the system's Python
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environment, it should be kept strictly compatible with Python 2.6.
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Synced in from openstack-common
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"""
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from __future__ import print_function
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import optparse
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import os
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import subprocess
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import sys
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class InstallVenv(object):
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def __init__(self, root, venv, requirements,
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test_requirements, py_version,
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project):
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self.root = root
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self.venv = venv
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self.requirements = requirements
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self.test_requirements = test_requirements
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self.py_version = py_version
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self.project = project
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def die(self, message, *args):
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print(message % args, file=sys.stderr)
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sys.exit(1)
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def check_python_version(self):
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if sys.version_info < (2, 6):
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self.die("Need Python Version >= 2.6")
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def run_command_with_code(self, cmd, redirect_output=True,
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check_exit_code=True):
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"""Runs a command in an out-of-process shell.
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Returns the output of that command. Working directory is self.root.
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"""
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if redirect_output:
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stdout = subprocess.PIPE
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else:
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stdout = None
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proc = subprocess.Popen(cmd, cwd=self.root, stdout=stdout)
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output = proc.communicate()[0]
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if check_exit_code and proc.returncode != 0:
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self.die('Command "%s" failed.\n%s', ' '.join(cmd), output)
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return (output, proc.returncode)
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def run_command(self, cmd, redirect_output=True, check_exit_code=True):
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return self.run_command_with_code(cmd, redirect_output,
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check_exit_code)[0]
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def get_distro(self):
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if (os.path.exists('/etc/fedora-release') or
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os.path.exists('/etc/redhat-release')):
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return Fedora(
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self.root, self.venv, self.requirements,
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self.test_requirements, self.py_version, self.project)
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else:
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return Distro(
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self.root, self.venv, self.requirements,
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self.test_requirements, self.py_version, self.project)
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def check_dependencies(self):
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self.get_distro().install_virtualenv()
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def create_virtualenv(self, no_site_packages=True):
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"""Creates the virtual environment and installs PIP.
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Creates the virtual environment and installs PIP only into the
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virtual environment.
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"""
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if not os.path.isdir(self.venv):
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print('Creating venv...', end=' ')
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if no_site_packages:
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self.run_command(['virtualenv', '-q', '--no-site-packages',
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self.venv])
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else:
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self.run_command(['virtualenv', '-q', self.venv])
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print('done.')
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else:
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print("venv already exists...")
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pass
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def pip_install(self, *args):
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self.run_command(['tools/with_venv.sh',
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'pip', 'install', '--upgrade'] + list(args),
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redirect_output=False)
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def install_dependencies(self):
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print('Installing dependencies with pip (this can take a while)...')
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# First things first, make sure our venv has the latest pip and
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# setuptools and pbr
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self.pip_install('pip>=1.4')
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self.pip_install('setuptools')
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self.pip_install('pbr')
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self.pip_install('-r', self.requirements, '-r', self.test_requirements)
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def parse_args(self, argv):
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"""Parses command-line arguments."""
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parser = optparse.OptionParser()
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parser.add_option('-n', '--no-site-packages',
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action='store_true',
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help="Do not inherit packages from global Python "
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"install.")
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return parser.parse_args(argv[1:])[0]
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class Distro(InstallVenv):
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def check_cmd(self, cmd):
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return bool(self.run_command(['which', cmd],
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check_exit_code=False).strip())
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def install_virtualenv(self):
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if self.check_cmd('virtualenv'):
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return
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if self.check_cmd('easy_install'):
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print('Installing virtualenv via easy_install...', end=' ')
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if self.run_command(['easy_install', 'virtualenv']):
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print('Succeeded')
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return
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else:
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print('Failed')
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self.die('ERROR: virtualenv not found.\n\n%s development'
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' requires virtualenv, please install it using your'
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' favorite package management tool' % self.project)
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class Fedora(Distro):
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"""This covers all Fedora-based distributions.
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Includes: Fedora, RHEL, CentOS, Scientific Linux
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"""
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def check_pkg(self, pkg):
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return self.run_command_with_code(['rpm', '-q', pkg],
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check_exit_code=False)[1] == 0
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def install_virtualenv(self):
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if self.check_cmd('virtualenv'):
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return
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if not self.check_pkg('python-virtualenv'):
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self.die("Please install 'python-virtualenv'.")
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super(Fedora, self).install_virtualenv()
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