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90 lines
2.8 KiB
Python
90 lines
2.8 KiB
Python
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# (c) 2015, Alejandro Guirao <lekumberri@gmail.com>
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# (c) 2012-17 Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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DOCUMENTATION = """
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lookup: shelvefile
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author: Alejandro Guirao <lekumberri@gmail.com>
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version_added: "2.0"
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short_description: read keys from Python shelve file
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description:
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- Read keys from Python shelve file.
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options:
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_terms:
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description: sets of key value pairs of parameters
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key:
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description: key to query
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required: True
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file:
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description: path to shelve file
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required: True
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"""
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EXAMPLES = """
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- name: retrieve a string value corresponding to a key inside a Python shelve file
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debug: msg="{{ lookup('shelvefile', 'file=path_to_some_shelve_file.db key=key_to_retrieve') }}
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"""
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RETURN = """
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_list:
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description: value(s) of key(s) in shelve file(s)
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"""
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import shelve
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from ansible.errors import AnsibleError, AnsibleAssertionError
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from ansible.plugins.lookup import LookupBase
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from ansible.module_utils._text import to_bytes, to_text
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class LookupModule(LookupBase):
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def read_shelve(self, shelve_filename, key):
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"""
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Read the value of "key" from a shelve file
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"""
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d = shelve.open(to_bytes(shelve_filename))
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res = d.get(key, None)
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d.close()
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return res
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def run(self, terms, variables=None, **kwargs):
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if not isinstance(terms, list):
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terms = [terms]
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ret = []
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for term in terms:
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paramvals = {"file": None, "key": None}
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params = term.split()
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try:
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for param in params:
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name, value = param.split('=')
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if name not in paramvals:
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raise AnsibleAssertionError('%s not in paramvals' % name)
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paramvals[name] = value
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except (ValueError, AssertionError) as e:
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# In case "file" or "key" are not present
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raise AnsibleError(e)
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key = paramvals['key']
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# Search also in the role/files directory and in the playbook directory
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shelvefile = self.find_file_in_search_path(variables, 'files', paramvals['file'])
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if shelvefile:
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res = self.read_shelve(shelvefile, key)
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if res is None:
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raise AnsibleError("Key %s not found in shelve file %s" % (key, shelvefile))
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# Convert the value read to string
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ret.append(to_text(res))
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break
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else:
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raise AnsibleError("Could not locate shelve file in lookup: %s" % paramvals['file'])
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return ret
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