131 lines
3.9 KiB
Python
131 lines
3.9 KiB
Python
#!/usr/bin/env python
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# coding: utf-8
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# Copyright 2014-2015 Canonical Limited.
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#
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# This file is part of charm-helpers.
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#
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# charm-helpers is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3 as
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# published by the Free Software Foundation.
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#
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# charm-helpers is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
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import os
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import subprocess
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from charmhelpers.fetch import apt_install, apt_update
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from charmhelpers.core.hookenv import charm_dir, log
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try:
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from pip import main as pip_execute
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except ImportError:
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apt_update()
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apt_install('python-pip')
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from pip import main as pip_execute
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__author__ = "Jorge Niedbalski <jorge.niedbalski@canonical.com>"
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def parse_options(given, available):
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"""Given a set of options, check if available"""
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for key, value in sorted(given.items()):
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if not value:
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continue
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if key in available:
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yield "--{0}={1}".format(key, value)
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def pip_install_requirements(requirements, constraints=None, **options):
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"""Install a requirements file.
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:param constraints: Path to pip constraints file.
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http://pip.readthedocs.org/en/stable/user_guide/#constraints-files
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"""
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command = ["install"]
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available_options = ('proxy', 'src', 'log', )
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for option in parse_options(options, available_options):
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command.append(option)
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command.append("-r {0}".format(requirements))
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if constraints:
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command.append("-c {0}".format(constraints))
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log("Installing from file: {} with constraints {} "
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"and options: {}".format(requirements, constraints, command))
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else:
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log("Installing from file: {} with options: {}".format(requirements,
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command))
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pip_execute(command)
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def pip_install(package, fatal=False, upgrade=False, venv=None, **options):
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"""Install a python package"""
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if venv:
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venv_python = os.path.join(venv, 'bin/pip')
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command = [venv_python, "install"]
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else:
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command = ["install"]
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available_options = ('proxy', 'src', 'log', 'index-url', )
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for option in parse_options(options, available_options):
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command.append(option)
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if upgrade:
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command.append('--upgrade')
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if isinstance(package, list):
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command.extend(package)
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else:
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command.append(package)
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log("Installing {} package with options: {}".format(package,
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command))
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if venv:
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subprocess.check_call(command)
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else:
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pip_execute(command)
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def pip_uninstall(package, **options):
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"""Uninstall a python package"""
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command = ["uninstall", "-q", "-y"]
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available_options = ('proxy', 'log', )
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for option in parse_options(options, available_options):
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command.append(option)
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if isinstance(package, list):
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command.extend(package)
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else:
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command.append(package)
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log("Uninstalling {} package with options: {}".format(package,
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command))
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pip_execute(command)
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def pip_list():
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"""Returns the list of current python installed packages
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"""
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return pip_execute(["list"])
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def pip_create_virtualenv(path=None):
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"""Create an isolated Python environment."""
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apt_install('python-virtualenv')
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if path:
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venv_path = path
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else:
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venv_path = os.path.join(charm_dir(), 'venv')
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if not os.path.exists(venv_path):
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subprocess.check_call(['virtualenv', venv_path])
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