mirror of
https://github.com/thegeeklab/ansible-later.git
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97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
# (c) 2017 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: vars
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author: Ansible Core
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version_added: "2.5"
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short_description: Lookup templated value of variables
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description:
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- Retrieves the value of an Ansible variable.
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options:
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_terms:
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description: The variable names to look up.
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required: True
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default:
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description:
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- What to return if a variable is undefined.
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- If no default is set, it will result in an error if any of the variables is undefined.
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"""
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EXAMPLES = """
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- name: Show value of 'variablename'
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debug: msg="{{ lookup('vars', 'variabl' + myvar)}}"
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vars:
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variablename: hello
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myvar: ename
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- name: Show default empty since i dont have 'variablnotename'
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debug: msg="{{ lookup('vars', 'variabl' + myvar, default='')}}"
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vars:
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variablename: hello
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myvar: notename
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- name: Produce an error since i dont have 'variablnotename'
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debug: msg="{{ lookup('vars', 'variabl' + myvar)}}"
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ignore_errors: True
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vars:
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variablename: hello
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myvar: notename
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- name: find several related variables
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debug: msg="{{ lookup('vars', 'ansible_play_hosts', 'ansible_play_batch', 'ansible_play_hosts_all') }}"
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- name: alternate way to find some 'prefixed vars' in loop
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debug: msg="{{ lookup('vars', 'ansible_play_' + item) }}"
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loop:
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- hosts
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- batch
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- hosts_all
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"""
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RETURN = """
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_value:
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description:
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- value of the variables requested.
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"""
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from ansible.errors import AnsibleError, AnsibleUndefinedVariable
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from ansible.module_utils.six import string_types
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from ansible.plugins.lookup import LookupBase
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class LookupModule(LookupBase):
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def run(self, terms, variables=None, **kwargs):
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if variables is not None:
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self._templar.set_available_variables(variables)
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myvars = getattr(self._templar, '_available_variables', {})
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self.set_options(direct=kwargs)
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default = self.get_option('default')
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ret = []
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for term in terms:
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if not isinstance(term, string_types):
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raise AnsibleError('Invalid setting identifier, "%s" is not a string, its a %s' % (term, type(term)))
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try:
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try:
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value = myvars[term]
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except KeyError:
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try:
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value = myvars['hostvars'][myvars['inventory_hostname']][term]
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except KeyError:
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raise AnsibleUndefinedVariable('No variable found with this name: %s' % term)
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ret.append(self._templar.template(value, fail_on_undefined=True))
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except AnsibleUndefinedVariable:
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if default is not None:
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ret.append(default)
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else:
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raise
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return ret
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