mirror of https://github.com/ansible/ansible.git
Add shelvefile lookup plugin
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# (c) 2015, Alejandro Guirao <lekumberri@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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import shelve
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import os
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from ansible import utils, errors
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class LookupModule(object):
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def __init__(self, basedir=None, **kwargs):
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self.basedir = basedir
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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(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, inject=None, **kwargs):
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terms = utils.listify_lookup_plugin_terms(terms, self.basedir, inject)
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ret = []
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if not isinstance(terms, list):
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terms = [ terms ]
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for term in terms:
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playbook_path = None
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relative_path = None
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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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assert(name in paramvals)
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paramvals[name] = value
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except (ValueError, AssertionError), e:
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# In case "file" or "key" are not present
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raise errors.AnsibleError(e)
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file = paramvals['file']
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key = paramvals['key']
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basedir_path = utils.path_dwim(self.basedir, file)
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# Search also in the role/files directory and in the playbook directory
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if '_original_file' in inject:
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relative_path = utils.path_dwim_relative(inject['_original_file'], 'files', file, self.basedir, check=False)
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if 'playbook_dir' in inject:
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playbook_path = os.path.join(inject['playbook_dir'], file)
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for path in (basedir_path, relative_path, playbook_path):
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if path and os.path.exists(path):
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res = self.read_shelve(path, key)
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if res is None:
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raise errors.AnsibleError("Key %s not found in shelve file %s" % (key, file))
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# Convert the value read to string
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ret.append(str(res))
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break
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else:
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raise errors.AnsibleError("Could not locate shelve file in lookup: %s" % file)
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return ret
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