ansible/library/easy_install

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2012-08-07 22:41:34 +02:00
#!/usr/bin/python
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# -*- 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/>.
#
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EASY_INSTALL = None
VIRTUALENV = '/usr/local/bin/virtualenv'
ENV = None
def _find_easy_install():
if ENV:
return os.path.join(ENV, 'bin', 'easy_install')
paths = ['/usr/local/bin', '/usr/bin']
for p in paths:
e = p + '/easy_install'
if os.path.exists(e):
return e
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):
cmd = '%s --dry-run %s' % (EASY_INSTALL, name)
rc, status_stdout, status_stderr = _run(cmd)
return not ('Reading' in status_stdout or 'Downloading' in status_stdout)
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(
name=dict(required=True),
virtualenv=dict(default=None, required=False)
)
module = AnsibleModule(argument_spec=arg_spec)
name = module.params['name']
ENV = module.params['virtualenv']
EASY_INSTALL = _find_easy_install()
rc = 0
err = ''
out = ''
if ENV:
rc_venv, out_venv, err_venv = _ensure_virtualenv()
rc += rc_venv
out += out_venv
err += err_venv
cmd = None
changed = False
installed = _is_package_installed(name)
if not installed:
cmd = '%s %s' % (EASY_INSTALL, name)
rc_pip, out_pip, err_pip = _run(cmd)
rc += rc_pip
out += out_pip
err += err_pip
changed = True
if rc != 0:
module.fail_json(msg=err, cmd=cmd)
module.exit_json(changed=changed, binary=EASY_INSTALL,
name=name, virtualenv=ENV)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()