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ansible/packaging/language/pip.py

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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
import re
import os
import sys
DOCUMENTATION = '''
---
module: pip
short_description: Manages Python library dependencies.
description:
- "Manage Python library dependencies. To use this module, one of the following keys is required: C(name)
or C(requirements)."
version_added: "0.7"
options:
name:
description:
- The name of a Python library to install or the url of the remote package.
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, which should be local to the remote system.
File can be specified as a relative path if using the chdir option.
required: false
default: null
virtualenv:
description:
- An optional path to a I(virtualenv) directory to install into.
It cannot be specified together with the 'executable' parameter (added in 2.1).
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_added: "1.1"
description:
- The command or a pathname to the command to create the virtual
environment with. For example C(pyvenv), C(virtualenv),
C(virtualenv2), C(~/bin/virtualenv), C(/usr/local/bin/virtualenv).
required: false
default: virtualenv
virtualenv_python:
version_added: "2.0"
description:
- The Python executable used for creating the virtual environment.
For example C(python3.4), C(python2.7). When not specified, the
system Python version is used.
required: false
default: null
state:
description:
- The state of module
- The 'forcereinstall' option is only available in Ansible 2.1 and above.
required: false
default: present
choices: [ "present", "absent", "latest", "forcereinstall" ]
extra_args:
description:
- Extra arguments passed to pip.
required: false
default: null
version_added: "1.0"
editable:
description:
- Pass the editable flag for versioning URLs.
required: false
default: yes
version_added: "2.0"
chdir:
description:
- cd into this directory before running the command
version_added: "1.3"
required: false
default: null
executable:
description:
- The explicit executable or a pathname to the executable to be used to
run pip for a specific version of Python installed in the system. For
example C(pip-3.3), if there are both Python 2.7 and 3.3 installations
in the system and you want to run pip for the Python 3.3 installation.
It cannot be specified together with the 'virtualenv' parameter (added in 2.1).
version_added: "1.3"
required: false
default: null
umask:
description:
- The system umask to apply before installing the pip package. This is
useful, for example, when installing on systems that have a very
restrictive umask by default (e.g., 0077) and you want to pip install
packages which are to be used by all users. Note that this requires you
to specify desired umask mode in octal, with a leading 0 (e.g., 0077).
version_added: "2.1"
required: false
default: null
notes:
- Please note that virtualenv (U(http://www.virtualenv.org/)) must be installed on the remote host if the virtualenv parameter is specified and the virtualenv needs to be initialized.
requirements: [ "virtualenv", "pip" ]
author: "Matt Wright (@mattupstate)"
'''
EXAMPLES = '''
# Install (Bottle) python package.
- pip: name=bottle
# Install (Bottle) python package on version 0.11.
- pip: name=bottle version=0.11
# Install (MyApp) using one of the remote protocols (bzr+,hg+,git+,svn+). You do not have to supply '-e' option in extra_args.
- pip: name='svn+http://myrepo/svn/MyApp#egg=MyApp'
# Install MyApp using one of the remote protocols (bzr+,hg+,git+) in a non editable way.
- pip: name='git+http://myrepo/app/MyApp' editable=false
# Install (MyApp) from local tarball
- pip: name='file:///path/to/MyApp.tar.gz'
# Install (Bottle) into the specified (virtualenv), inheriting none of the globally installed modules
- pip: name=bottle virtualenv=/my_app/venv
# Install (Bottle) into the specified (virtualenv), inheriting globally installed modules
- pip: name=bottle virtualenv=/my_app/venv virtualenv_site_packages=yes
# Install (Bottle) into the specified (virtualenv), using Python 2.7
- pip: name=bottle virtualenv=/my_app/venv virtualenv_command=virtualenv-2.7
# Install specified python requirements.
- pip: requirements=/my_app/requirements.txt
# Install specified python requirements in indicated (virtualenv).
- pip: requirements=/my_app/requirements.txt virtualenv=/my_app/venv
# Install specified python requirements and custom Index URL.
- pip: requirements=/my_app/requirements.txt extra_args='-i https://example.com/pypi/simple'
# Install (Bottle) for Python 3.3 specifically,using the 'pip-3.3' executable.
- pip: name=bottle executable=pip-3.3
# Install (Bottle), forcing reinstallation if it's already installed
- pip: name=bottle state=forcereinstall
# Install (Bottle) while ensuring the umask is 0022 (to ensure other users can use it)
- pip: name=bottle umask=0022
become: True
'''
def _get_cmd_options(module, cmd):
thiscmd = cmd + " --help"
rc, stdout, stderr = module.run_command(thiscmd)
if rc != 0:
module.fail_json(msg="Could not get output from %s: %s" % (thiscmd, stdout + stderr))
words = stdout.strip().split()
cmd_options = [ x for x in words if x.startswith('--') ]
return cmd_options
def _get_full_name(name, version=None):
if version is None:
resp = name
else:
resp = name + '==' + version
return resp
def _is_present(name, version, installed_pkgs):
for pkg in installed_pkgs:
if '==' not in pkg:
continue
[pkg_name, pkg_version] = pkg.split('==')
if pkg_name == name and (version is None or version == pkg_version):
return True
return False
def _get_pip(module, env=None, executable=None):
# 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.
candidate_pip_basenames = ['pip', 'python-pip', 'pip-python']
pip = None
if executable is not None:
executable = os.path.expanduser(executable)
if os.path.isabs(executable):
pip = executable
else:
# If you define your own executable that executable should be the only candidate.
candidate_pip_basenames = [executable]
if pip is None:
if env is None:
opt_dirs = []
else:
# Try pip with the virtualenv directory first.
opt_dirs = ['%s/bin' % env]
for basename in candidate_pip_basenames:
pip = module.get_bin_path(basename, False, opt_dirs)
if pip is not None:
break
# pip should have been found by now. The final call to get_bin_path will
# trigger fail_json.
if pip is None:
basename = candidate_pip_basenames[0]
pip = module.get_bin_path(basename, True, opt_dirs)
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',
forcereinstall='install -U --force-reinstall',
)
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, type='str'),
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),
virtualenv_python=dict(default=None, required=False, type='str'),
use_mirrors=dict(default='yes', type='bool'),
extra_args=dict(default=None, required=False),
editable=dict(default='yes', type='bool', required=False),
chdir=dict(default=None, required=False, type='path'),
executable=dict(default=None, required=False),
umask=dict(reqiured=False,default=None),
),
required_one_of=[['name', 'requirements']],
mutually_exclusive=[['name', 'requirements'], ['executable', 'virtualenv']],
supports_check_mode=True
)
state = module.params['state']
name = module.params['name']
version = module.params['version']
requirements = module.params['requirements']
extra_args = module.params['extra_args']
virtualenv_python = module.params['virtualenv_python']
chdir = module.params['chdir']
umask = module.params['umask']
if umask and not isinstance(umask, int):
try:
umask = int(umask, 8)
except Exception:
module.fail_json(msg="umask must be an octal integer",
details=str(sys.exc_info()[1]))
old_umask = None
if umask != None:
old_umask = os.umask(umask)
try:
if state == 'latest' and version is not None:
module.fail_json(msg='version is incompatible with state=latest')
if chdir is None:
# this is done to avoid permissions issues with privilege escalation and virtualenvs
chdir = tempfile.gettempdir()
err = ''
out = ''
env = module.params['virtualenv']
virtualenv_command = module.params['virtualenv_command']
if env:
env = os.path.expanduser(env)
if not os.path.exists(os.path.join(env, 'bin', 'activate')):
if module.check_mode:
module.exit_json(changed=True)
cmd = os.path.expanduser(virtualenv_command)
if os.path.basename(cmd) == cmd:
cmd = module.get_bin_path(virtualenv_command, True)
if module.params['virtualenv_site_packages']:
cmd += ' --system-site-packages'
else:
cmd_opts = _get_cmd_options(module, cmd)
if '--no-site-packages' in cmd_opts:
cmd += ' --no-site-packages'
if virtualenv_python:
cmd += ' -p%s' % virtualenv_python
cmd = "%s %s" % (cmd, env)
rc, out_venv, err_venv = module.run_command(cmd, cwd=chdir)
out += out_venv
err += err_venv
if rc != 0:
_fail(module, cmd, out, err)
pip = _get_pip(module, env, module.params['executable'])
cmd = '%s %s' % (pip, state_map[state])
# If there's a virtualenv we want things we install to be able to use other
# installations that exist as binaries within this virtualenv. Example: we
# install cython and then gevent -- gevent needs to use the cython binary,
# not just a python package that will be found by calling the right python.
# So if there's a virtualenv, we add that bin/ to the beginning of the PATH
# in run_command by setting path_prefix here.
path_prefix = None
if env:
path_prefix = "/".join(pip.split('/')[:-1])
# Automatically apply -e option to extra_args when source is a VCS url. VCS
# includes those beginning with svn+, git+, hg+ or bzr+
has_vcs = bool(name and re.match(r'(svn|git|hg|bzr)\+', name))
if has_vcs and module.params['editable']:
args_list = [] # used if extra_args is not used at all
if extra_args:
args_list = extra_args.split(' ')
if '-e' not in args_list:
args_list.append('-e')
# Ok, we will reconstruct the option string
extra_args = ' '.join(args_list)
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:
if extra_args or requirements or state == 'latest' or not name:
module.exit_json(changed=True)
elif has_vcs:
module.exit_json(changed=True)
freeze_cmd = '%s freeze' % pip
rc, out_pip, err_pip = module.run_command(freeze_cmd, cwd=chdir)
if rc != 0:
module.exit_json(changed=True)
out += out_pip
err += err_pip
is_present = _is_present(name, version, out.split())
changed = (state == 'present' and not is_present) or (state == 'absent' and is_present)
module.exit_json(changed=changed, cmd=freeze_cmd, stdout=out, stderr=err)
if requirements or has_vcs:
freeze_cmd = '%s freeze' % pip
out_freeze_before = module.run_command(freeze_cmd, cwd=chdir)[1]
else:
out_freeze_before = None
rc, out_pip, err_pip = module.run_command(cmd, path_prefix=path_prefix, cwd=chdir)
out += out_pip
err += err_pip
if rc == 1 and state == 'absent' and \
('not installed' in out_pip or 'not installed' in err_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:
if out_freeze_before is None:
changed = 'Successfully installed' in out_pip
else:
if out_freeze_before is None:
changed = 'Successfully installed' in out_pip
else:
out_freeze_after = module.run_command(freeze_cmd, cwd=chdir)[1]
changed = out_freeze_before != out_freeze_after
module.exit_json(changed=changed, cmd=cmd, name=name, version=version,
state=state, requirements=requirements, virtualenv=env,
stdout=out, stderr=err)
finally:
if old_umask != None:
os.umask(old_umask)
# import module snippets
from ansible.module_utils.basic import *
main()
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