# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright 2013 OpenStack, LLC # 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. Synced in from openstack-common """ import os import subprocess import sys from quantum.openstack.common import cfg class InstallVenv(object): def __init__(self, root, venv, pip_requires, test_requires, py_version, project): self.root = root self.venv = venv self.pip_requires = pip_requires self.test_requires = test_requires self.py_version = py_version self.project = project def die(self, message, *args): print >> sys.stderr, message % args 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 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.pip_requires, self.test_requires, self.py_version, self.project) else: return Distro(self.root, self.venv, self.pip_requires, self.test_requires, 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...', if no_site_packages: self.run_command(['virtualenv', '-q', '--no-site-packages', self.venv]) else: self.run_command(['virtualenv', '-q', self.venv]) print 'done.' print 'Installing pip in virtualenv...', if not self.run_command(['tools/with_venv.sh', 'easy_install', 'pip>1.0']).strip(): self.die("Failed to install pip.") 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 # distribute. # NOTE: we keep pip at version 1.1 since the most recent version causes # the .venv creation to fail. See: # https://bugs.launchpad.net/nova/+bug/1047120 self.pip_install('pip==1.1') self.pip_install('distribute') # Install greenlet by hand - just listing it in the requires file does # not # get it installed in the right order self.pip_install('greenlet') self.pip_install('-r', self.pip_requires) self.pip_install('-r', self.test_requires) def post_process(self): self.get_distro().post_process() def parse_args(self, argv): """Parses command-line arguments.""" cli_opts = [ cfg.BoolOpt('no-site-packages', default=False, short='n', help="Do not inherit packages from global Python" "install"), ] CLI = cfg.ConfigOpts() CLI.register_cli_opts(cli_opts) CLI(argv[1:]) return CLI 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...', 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) def post_process(self): """Any distribution-specific post-processing gets done here. In particular, this is useful for applying patches to code inside the venv. """ pass 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 yum_install(self, pkg, **kwargs): print "Attempting to install '%s' via yum" % pkg self.run_command(['sudo', 'yum', 'install', '-y', pkg], **kwargs) def apply_patch(self, originalfile, patchfile): self.run_command(['patch', originalfile, patchfile]) def install_virtualenv(self): if self.check_cmd('virtualenv'): return if not self.check_pkg('python-virtualenv'): self.yum_install('python-virtualenv', check_exit_code=False) super(Fedora, self).install_virtualenv() def post_process(self): """Workaround for a bug in eventlet. This currently affects RHEL6.1, but the fix can safely be applied to all RHEL and Fedora distributions. This can be removed when the fix is applied upstream. Nova: https://bugs.launchpad.net/nova/+bug/884915 Upstream: https://bitbucket.org/which_linden/eventlet/issue/89 """ # Install "patch" program if it's not there if not self.check_pkg('patch'): self.yum_install('patch') # Apply the eventlet patch self.apply_patch(os.path.join(self.venv, 'lib', self.py_version, 'site-packages', 'eventlet/green/subprocess.py'), 'contrib/redhat-eventlet.patch')