ansible/library/pip
2012-08-08 10:35:07 -04:00

198 lines
6 KiB
Python
Executable file

#!/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/>.
#
PIP = None
VIRTUALENV = None
ENV = None
def _get_full_name(name, version=None):
return name if version is None else name + '==' + version
def _find_pip():
paths = ['/usr/local/bin', '/usr/bin']
if ENV:
paths = [os.path.join(ENV, 'bin')] + paths
for p in paths:
pe = p + '/pip'
if os.path.exists(pe):
return pe
module.fail_json(msg='pip is not installed')
def _find_virtualenv():
paths = ['/usr/local/bin', '/usr/bin']
for p in paths:
ve = p + '/virtualenv'
if os.path.exists(ve):
return ve
module.fail_json(msg='virtualenv is not installed')
def _ensure_virtualenv():
if os.path.exists(os.path.join(ENV, 'bin', 'activate')):
return 0, '', ''
else:
return _run('%s %s' % (VIRTUALENV, ENV))
def _is_package_installed(name, version=None):
rc, status_stdout, status_stderr = _run('%s freeze' % PIP)
return _get_full_name(name, version).lower() in status_stdout.lower()
def _did_install(out):
return 'Successfully installed' in out
def _run(cmd):
# returns (rc, stdout, stderr) from shell command
process = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, shell=True)
stdout, stderr = process.communicate()
return (process.returncode, stdout, stderr)
def main():
arg_spec = dict(
state=dict(default='present', choices=['absent', 'present', 'latest']),
name=dict(default=None, required=False),
version=dict(default=None, required=False),
requirements=dict(default=None, required=False),
virtualenv=dict(default=None, required=False)
)
module = AnsibleModule(argument_spec=arg_spec)
rc = 0
err = ''
out = ''
ENV = module.params['virtualenv']
PIP = _find_pip()
if ENV:
VIRTUALENV = _find_virtualenv()
rc_venv, out_venv, err_venv = _ensure_virtualenv()
rc += rc_venv
out += out_venv
err += err_venv
state = module.params['state']
name = module.params['name']
version = module.params['version']
requirements = module.params['requirements']
command_map = dict(present='install', absent='uninstall', latest='install')
if state == 'latest' and version is not None:
module.fail_json(msg='If `state` is set to `latest` the `version` '
'parameter must not be specified.')
if state == 'latest' and requirements is not None:
module.fail_json(msg='If `state` is set to `latest` the `requirements` '
'parameter must not be specified.')
if name is not None and '==' in name:
module.fail_json(msg='It looks like you specified the version number '
'in the library name. Use the `version` parameter '
'to specify version instead')
if version is not None and name is None:
module.fail_json(msg='The `version` parameter must be used with the '
'`name` parameter and not with the `requirements` '
'paramter')
if name is None and requirements is None:
module.fail_json(msg='You must specify a python library name via '
'the `name` parameter or a requirements file via '
'the `requirements` paramter')
if name and requirements:
module.fail_json(msg='Both `name` and `requirements` were specified. '
'Specify only the python library name via the '
'`name` parameter or a requirements file via the '
'`requirements` parameter')
cmd = None
installed = None
if requirements:
cmd = '%s %s -r %s --use-mirrors' % (PIP, command_map[state], requirements)
rc_pip, out_pip, err_pip = _run(cmd)
rc += rc_pip
out += out_pip
err += err_pip
changed = ((_did_install(out) and state == 'present') or
(not _did_install(out) and state == 'absent'))
if name and state == 'latest':
cmd = '%s %s %s --upgrade' % (PIP, command_map[state], name)
rc_pip, out_pip, err_pip = _run(cmd)
rc += rc_pip
out += out_pip
err += err_pip
changed = 'Successfully installed' in out_pip
elif name:
installed = _is_package_installed(name, version)
changed = ((installed and state == 'absent') or
(not installed and state == 'present'))
if changed:
full_name = _get_full_name(name, version) if state == 'present' else name
cmd = '%s %s %s' % (PIP, command_map[state], full_name)
if state == 'absent':
cmd = cmd + ' -y'
else:
cmd = cmd + ' --use-mirrors'
rc_pip, out_pip, err_pip = _run(cmd)
rc += rc_pip
out += out_pip
err += err_pip
if rc != 0:
module.fail_json(msg=err, cmd=cmd)
module.exit_json(changed=changed, cmd=cmd, name=name, version=version,
state=state, requirements=requirements, virtualenv=ENV)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()