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ansible/library/packaging/pip

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Matt Wright <matt@nobien.net>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
#
import tempfile
DOCUMENTATION = '''
---
module: pip
short_description: Manages Python library dependencies.
description:
- Manage Python library dependencies.
version_added: "0.7"
options:
name:
description:
- The name of a Python library to install
required: false
default: null
version:
description:
- The version number to install of the Python library specified in the I(name) parameter
required: false
default: null
requirements:
description:
- The path to a pip requirements file
required: false
default: null
virtualenv:
description:
- An optional path to a I(virtualenv) directory to install into
required: false
default: null
virtualenv_site_packages:
version_added: "1.0"
description:
- Whether the virtual environment will inherit packages from the
global site-packages directory. Note that if this setting is
changed on an already existing virtual environment it will not
have any effect, the environment must be deleted and newly
created.
required: false
default: "no"
choices: [ "yes", "no" ]
virtualenv_command:
version_aded: "1.1"
description:
- The command to create the virtual environment with. For example
C(pyvenv), C(virtualenv), C(virtualenv2).
required: false
default: virtualenv
use_mirrors:
description:
- Whether to use mirrors when installing python libraries. If using
an older version of pip (< 1.0), you should set this to no because
older versions of pip do not support I(--use-mirrors).
required: false
default: "yes"
choices: [ "yes", "no" ]
version_added: "1.0"
state:
description:
- The state of module
required: false
default: present
choices: [ "present", "absent", "latest" ]
extra_args:
description:
- Extra arguments passed to pip.
required: false
default: null
version_added: "1.0"
examples:
- code: "pip: name=flask"
description: Install I(flask) python package.
- code: "pip: name=flask version=0.8"
description: Install I(flask) python package on version 0.8.
- code: "pip: name=flask virtualenv=/my_app/venv"
description: "Install I(Flask) (U(http://flask.pocoo.org/)) into the specified I(virtualenv), inheriting none of the globally installed modules"
- code: "pip: name=flask virtualenv=/my_app/venv virtualenv_site_packages=yes"
description: "Install I(Flask) (U(http://flask.pocoo.org/)) into the specified I(virtualenv), inheriting globally installed modules"
- code: "pip: name=flask virtualenv=/my_app/venv virtualenv_command=virtualenv-2.7"
description: "Install I(Flask) (U(http://flask.pocoo.org/)) into the specified I(virtualenv), using Python 2.7"
- code: "pip: requirements=/my_app/requirements.txt"
description: Install specified python requirements.
- code: "pip: requirements=/my_app/requirements.txt virtualenv=/my_app/venv"
description: Install specified python requirements in indicated I(virtualenv).
- code: "pip: requirements=/my_app/requirements.txt extra_args='-i https://example.com/pypi/simple'"
description: Install specified python requirements and custom Index URL.
notes:
- Please note that virtualenv (U(http://www.virtualenv.org/)) must be installed on the remote host if the virtualenv parameter is specified.
requirements: [ "virtualenv", "pip" ]
author: Matt Wright
'''
def _get_full_name(name, version=None):
if version is None:
resp = name
else:
resp = name + '==' + version
return resp
def _get_pip(module, env):
# On Debian and Ubuntu, pip is pip.
# On Fedora18 and up, pip is python-pip.
# On Fedora17 and below, CentOS and RedHat 6 and 5, pip is pip-python.
# On Fedora, CentOS, and RedHat, the exception is in the virtualenv.
# There, pip is just pip.
# Try pip with the virtualenv directory first.
pip = module.get_bin_path('pip', False, ['%s/bin' % env])
for p in ['python-pip', 'pip-python']:
if not pip:
pip = module.get_bin_path(p, False, ['%s/bin' % env])
# pip should have been found by now. The final call to get_bin_path
# will trigger fail_json.
if not pip:
pip = module.get_bin_path('pip', True, ['%s/bin' % env])
return pip
def _fail(module, cmd, out, err):
msg = ''
if out:
msg += "stdout: %s" % (out, )
if err:
msg += "\n:stderr: %s" % (err, )
module.fail_json(cmd=cmd, msg=msg)
def main():
state_map = dict(
present='install',
absent='uninstall -y',
latest='install -U',
)
module = AnsibleModule(
argument_spec=dict(
state=dict(default='present', choices=state_map.keys()),
name=dict(default=None, required=False),
version=dict(default=None, required=False),
requirements=dict(default=None, required=False),
virtualenv=dict(default=None, required=False),
virtualenv_site_packages=dict(default='no', type='bool'),
virtualenv_command=dict(default='virtualenv', required=False),
use_mirrors=dict(default='yes', type='bool'),
extra_args=dict(default=None, required=False),
),
required_one_of=[['name', 'requirements']],
mutually_exclusive=[['name', 'requirements']],
supports_check_mode=True
)
state = module.params['state']
name = module.params['name']
version = module.params['version']
requirements = module.params['requirements']
use_mirrors = module.params['use_mirrors']
extra_args = module.params['extra_args']
if state == 'latest' and version is not None:
module.fail_json(msg='version is incompatible with state=latest')
if name and '=' in name:
module.fail_json(msg='version must be specified in the version parameter')
err = ''
out = ''
env = module.params['virtualenv']
virtualenv_command = module.params['virtualenv_command']
if env:
env = os.path.expanduser(env)
virtualenv = module.get_bin_path(virtualenv_command, True)
if not os.path.exists(os.path.join(env, 'bin', 'activate')):
if module.check_mode:
module.exit_json(changed=True)
if module.params['virtualenv_site_packages']:
cmd = '%s --system-site-packages %s' % (virtualenv, env)
else:
cmd = '%s %s' % (virtualenv, env)
rc, out_venv, err_venv = module.run_command(cmd)
out += out_venv
err += err_venv
if rc != 0:
_fail(module, cmd, out, err)
pip = _get_pip(module, env)
cmd = '%s %s' % (pip, state_map[state])
if state != 'absent' and use_mirrors:
cmd += ' --use-mirrors'
if extra_args:
cmd += ' %s' % extra_args
if name:
cmd += ' %s' % _get_full_name(name, version)
elif requirements:
cmd += ' -r %s' % requirements
if module.check_mode:
module.exit_json(changed=True)
os.chdir(tempfile.gettempdir())
rc, out_pip, err_pip = module.run_command(cmd)
out += out_pip
err += err_pip
if rc == 1 and state == 'absent' and 'not installed' in out_pip:
pass # rc is 1 when attempting to uninstall non-installed package
elif rc != 0:
_fail(module, cmd, out, err)
if state == 'absent':
changed = 'Successfully uninstalled' in out_pip
else:
changed = 'Successfully installed' in out_pip
module.exit_json(changed=changed, cmd=cmd, name=name, version=version,
state=state, requirements=requirements, virtualenv=env, stdout=out, stderr=err)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()
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