Initial commit
mostly as-is, taken from `rattail.fablib` subpackage
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139
rattail_fabric/python.py
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139
rattail_fabric/python.py
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# -*- coding: utf-8; -*-
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################################################################################
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#
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# Rattail -- Retail Software Framework
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# Copyright © 2010-2018 Lance Edgar
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#
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# This file is part of Rattail.
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#
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# Rattail is free software: you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# version.
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#
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# Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# Rattail. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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"""
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Fabric Library for Python
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"""
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from __future__ import unicode_literals, absolute_import
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from contextlib import contextmanager
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import six
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from fabric.api import sudo, run, prefix, cd, settings, env
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from fabric.contrib.files import exists, append
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from rattail_fabric import apt, mkdir
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def install_pip(use_apt=False):
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"""
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Install/upgrade the Pip installer for Python.
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"""
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if use_apt:
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apt.install('python-pip')
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else:
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apt.install('build-essential', 'python-dev', 'libssl-dev', 'libffi-dev')
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with settings(warn_only=True):
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result = sudo('which pip')
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if result.failed:
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apt.install('python-pkg-resources', 'python-setuptools')
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sudo('easy_install pip')
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sudo('apt-get --assume-yes purge python-setuptools')
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pip('setuptools')
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pip('pip', 'wheel', 'ndg-httpsclient')
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def pip(*packages):
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"""
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Install one or more packages via ``pip install``.
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"""
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packages = ["'{0}'".format(p) for p in packages]
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sudo('pip install --upgrade {0}'.format(' '.join(packages)))
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def install_virtualenvwrapper(workon_home=None, user='root', use_apt=False):
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"""
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Install the `virtualenvwrapper`_ system, with the given ``workon`` home,
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owned by the given user.
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"""
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workon_home = workon_home or getattr(env, 'python_workon_home', '/srv/envs')
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mkdir(workon_home, owner=user)
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if use_apt:
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apt.install('virtualenvwrapper')
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else:
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pip('virtualenvwrapper')
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configure_virtualenvwrapper('root', workon_home)
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if user != 'root':
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configure_virtualenvwrapper(user, workon_home)
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configure_virtualenvwrapper(env.user, workon_home)
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def configure_virtualenvwrapper(user, workon_home=None, wrapper='/usr/local/bin/virtualenvwrapper.sh'):
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"""
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Configure virtualenvwrapper for the given user account.
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"""
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workon_home = workon_home or getattr(env, 'python_workon_home', '/srv/envs')
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home = sudo('echo $HOME', user=user)
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home = home.rstrip('/')
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def update(script):
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script = '{}/{}'.format(home, script)
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if not exists(script):
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sudo('touch {}'.format(script))
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sudo('chown {}: {}'.format(user, script))
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append(script, 'export WORKON_HOME={}'.format(workon_home), use_sudo=True)
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append(script, 'source {}'.format(wrapper), use_sudo=True)
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update('.profile')
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update('.bashrc')
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def mkvirtualenv(name, python=None, user=None, workon_home=None, upgrade_pip=True):
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"""
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Make a new Python virtual environment.
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"""
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workon_home = workon_home or getattr(env, 'python_workon_home', '/srv/envs')
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sudo('mkvirtualenv {} {}'.format('--python={}'.format(python) if python else '', name))
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if upgrade_pip:
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with workon(name):
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pip('six')
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pip('pip', 'setuptools', 'wheel', 'ndg-httpsclient')
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if user:
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with cdvirtualenv(name, workon_home=workon_home):
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mkdir('app/log', owner='{0}:{0}'.format(user))
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@contextmanager
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def workon(name):
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"""
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Context manager to prefix your command(s) with the ``workon`` command.
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"""
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with prefix('workon {0}'.format(name)):
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yield
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@contextmanager
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def cdvirtualenv(name, subdirs=[], workon_home=None):
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"""
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Context manager to prefix your command(s) with the ``cdvirtualenv`` command.
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"""
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workon_home = workon_home or getattr(env, 'python_workon_home', '/srv/envs')
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if isinstance(subdirs, six.string_types):
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subdirs = [subdirs]
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path = '{0}/{1}'.format(workon_home, name)
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if subdirs:
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path = '{0}/{1}'.format(path, '/'.join(subdirs))
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with workon(name):
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with cd(path):
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yield
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