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#!/usr/bin/python
# Copyright (c) 2018 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
ANSIBLE_METADATA = {
'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'community'
}
DOCUMENTATION = '''
module: python_requirements_info
short_description: Show python path and assert dependency versions
description:
- Get info about available Python requirements on the target host, including listing required libraries and gathering versions.
- This module was called C(python_requirements_facts) before Ansible 2.9. The usage did not change.
version_added: "2.7"
options:
dependencies:
description: >
A list of version-likes or module names to check for installation.
Supported operators: <, >, <=, >=, or ==. The bare module name like
I(ansible), the module with a specific version like I(boto3==1.6.1), or a
partial version like I(requests>2) are all valid specifications.
author:
- Will Thames (@willthames)
- Ryan Scott Brown (@ryansb)
'''
EXAMPLES = '''
- name: show python lib/site paths
python_requirements_info:
- name: check for modern boto3 and botocore versions
python_requirements_info:
dependencies:
- boto3>1.6
- botocore<2
'''
RETURN = '''
python:
description: path to python version used
returned: always
type: str
sample: /usr/local/opt/python@2/bin/python2.7
python_version:
description: version of python
returned: always
type: str
sample: "2.7.15 (default, May 1 2018, 16:44:08)\n[GCC 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.1)]"
python_system_path:
description: List of paths python is looking for modules in
returned: always
type: list
sample:
- /usr/local/opt/python@2/site-packages/
- /usr/lib/python/site-packages/
- /usr/lib/python/site-packages/
valid:
description: A dictionary of dependencies that matched their desired versions. If no version was specified, then I(desired) will be null
returned: always
type: dict
sample:
boto3:
desired: null
installed: 1.7.60
botocore:
desired: botocore<2
installed: 1.10.60
mismatched:
description: A dictionary of dependencies that did not satisfy the desired version
returned: always
type: dict
sample:
botocore:
desired: botocore>2
installed: 1.10.60
not_found:
description: A list of packages that could not be imported at all, and are not installed
returned: always
type: list
sample:
- boto4
- requests
'''
import re
import sys
import operator
HAS_DISTUTILS = False
try:
import pkg_resources
from distutils.version import LooseVersion
HAS_DISTUTILS = True
except ImportError:
pass
from ansible.module_utils.basic import AnsibleModule
operations = {
'<=': operator.le,
'>=': operator.ge,
'<': operator.lt,
'>': operator.gt,
'==': operator.eq,
}
def main():
module = AnsibleModule(
argument_spec=dict(
dependencies=dict(type='list')
),
supports_check_mode=True,
)
if module._name == 'python_requirements_facts':
module.deprecate("The 'python_requirements_facts' module has been renamed to 'python_requirements_info'", version='2.13')
if not HAS_DISTUTILS:
module.fail_json(
msg='Could not import "distutils" and "pkg_resources" libraries to introspect python environment.',
python=sys.executable,
python_version=sys.version,
python_system_path=sys.path,
)
pkg_dep_re = re.compile(r'(^[a-zA-Z][a-zA-Z0-9_-]+)(==|[><]=?)?([0-9.]+)?$')
results = dict(
not_found=[],
mismatched={},
valid={},
)
for dep in (module.params.get('dependencies') or []):
match = pkg_dep_re.match(dep)
if match is None:
module.fail_json(msg="Failed to parse version requirement '{0}'. Must be formatted like 'ansible>2.6'".format(dep))
pkg, op, version = match.groups()
if op is not None and op not in operations:
module.fail_json(msg="Failed to parse version requirement '{0}'. Operator must be one of >, <, <=, >=, or ==".format(dep))
try:
existing = pkg_resources.get_distribution(pkg).version
except pkg_resources.DistributionNotFound:
# not there
results['not_found'].append(pkg)
continue
if op is None and version is None:
results['valid'][pkg] = {
'installed': existing,
'desired': None,
}
elif operations[op](LooseVersion(existing), LooseVersion(version)):
results['valid'][pkg] = {
'installed': existing,
'desired': dep,
}
else:
results['mismatched'] = {
'installed': existing,
'desired': dep,
}
module.exit_json(
python=sys.executable,
python_version=sys.version,
python_system_path=sys.path,
**results
)
if __name__ == '__main__':
main()
|
