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# -*- coding: utf-8 -*-
# Copyright (c) 2015, Alejandro Guirao <lekumberri@gmail.com>
# Copyright (c) 2012-17 Ansible Project
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
DOCUMENTATION = '''
name: shelvefile
author: Alejandro Guirao (!UNKNOWN) <lekumberri@gmail.com>
short_description: read keys from Python shelve file
description:
- Read keys from Python shelve file.
options:
_terms:
description: Sets of key value pairs of parameters.
key:
description: Key to query.
required: true
file:
description: Path to shelve file.
required: true
'''
EXAMPLES = """
- name: Retrieve a string value corresponding to a key inside a Python shelve file
ansible.builtin.debug:
msg: "{{ lookup('community.general.shelvefile', 'file=path_to_some_shelve_file.db key=key_to_retrieve') }}"
"""
RETURN = """
_list:
description: Value(s) of key(s) in shelve file(s).
type: list
elements: str
"""
import shelve
from ansible.errors import AnsibleError, AnsibleAssertionError
from ansible.plugins.lookup import LookupBase
from ansible.module_utils.common.text.converters import to_bytes, to_text
class LookupModule(LookupBase):
def read_shelve(self, shelve_filename, key):
"""
Read the value of "key" from a shelve file
"""
d = shelve.open(to_bytes(shelve_filename))
res = d.get(key, None)
d.close()
return res
def run(self, terms, variables=None, **kwargs):
if not isinstance(terms, list):
terms = [terms]
ret = []
for term in terms:
paramvals = {"file": None, "key": None}
params = term.split()
try:
for param in params:
name, value = param.split('=')
if name not in paramvals:
raise AnsibleAssertionError('%s not in paramvals' % name)
paramvals[name] = value
except (ValueError, AssertionError) as e:
# In case "file" or "key" are not present
raise AnsibleError(e)
key = paramvals['key']
# Search also in the role/files directory and in the playbook directory
shelvefile = self.find_file_in_search_path(variables, 'files', paramvals['file'])
if shelvefile:
res = self.read_shelve(shelvefile, key)
if res is None:
raise AnsibleError("Key %s not found in shelve file %s" % (key, shelvefile))
# Convert the value read to string
ret.append(to_text(res))
break
else:
raise AnsibleError("Could not locate shelve file in lookup: %s" % paramvals['file'])
return ret
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