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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 16:04:21 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 16:04:21 +0000 |
commit | 8a754e0858d922e955e71b253c139e071ecec432 (patch) | |
tree | 527d16e74bfd1840c85efd675fdecad056c54107 /lib/ansible/plugins/lookup/vars.py | |
parent | Initial commit. (diff) | |
download | ansible-core-upstream.tar.xz ansible-core-upstream.zip |
Adding upstream version 2.14.3.upstream/2.14.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/ansible/plugins/lookup/vars.py')
-rw-r--r-- | lib/ansible/plugins/lookup/vars.py | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/lib/ansible/plugins/lookup/vars.py b/lib/ansible/plugins/lookup/vars.py new file mode 100644 index 0000000..dd5f763 --- /dev/null +++ b/lib/ansible/plugins/lookup/vars.py @@ -0,0 +1,106 @@ +# (c) 2017 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 + +DOCUMENTATION = """ + name: vars + author: Ansible Core Team + version_added: "2.5" + short_description: Lookup templated value of variables + description: + - 'Retrieves the value of an Ansible variable. Note: Only returns top level variable names.' + options: + _terms: + description: The variable names to look up. + required: True + default: + description: + - What to return if a variable is undefined. + - If no default is set, it will result in an error if any of the variables is undefined. +""" + +EXAMPLES = """ +- name: Show value of 'variablename' + ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'variabl' + myvar) }}" + vars: + variablename: hello + myvar: ename + +- name: Show default empty since i dont have 'variablnotename' + ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'variabl' + myvar, default='')}}" + vars: + variablename: hello + myvar: notename + +- name: Produce an error since i dont have 'variablnotename' + ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'variabl' + myvar)}}" + ignore_errors: True + vars: + variablename: hello + myvar: notename + +- name: find several related variables + ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'ansible_play_hosts', 'ansible_play_batch', 'ansible_play_hosts_all') }}" + +- name: Access nested variables + ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'variabl' + myvar).sub_var }}" + ignore_errors: True + vars: + variablename: + sub_var: 12 + myvar: ename + +- name: alternate way to find some 'prefixed vars' in loop + ansible.builtin.debug: msg="{{ lookup('ansible.builtin.vars', 'ansible_play_' + item) }}" + loop: + - hosts + - batch + - hosts_all +""" + +RETURN = """ +_value: + description: + - value of the variables requested. + type: list + elements: raw +""" + +from ansible.errors import AnsibleError, AnsibleUndefinedVariable +from ansible.module_utils.six import string_types +from ansible.plugins.lookup import LookupBase + + +class LookupModule(LookupBase): + + def run(self, terms, variables=None, **kwargs): + if variables is not None: + self._templar.available_variables = variables + myvars = getattr(self._templar, '_available_variables', {}) + + self.set_options(var_options=variables, direct=kwargs) + default = self.get_option('default') + + ret = [] + for term in terms: + if not isinstance(term, string_types): + raise AnsibleError('Invalid setting identifier, "%s" is not a string, its a %s' % (term, type(term))) + + try: + try: + value = myvars[term] + except KeyError: + try: + value = myvars['hostvars'][myvars['inventory_hostname']][term] + except KeyError: + raise AnsibleUndefinedVariable('No variable found with this name: %s' % term) + + ret.append(self._templar.template(value, fail_on_undefined=True)) + except AnsibleUndefinedVariable: + if default is not None: + ret.append(default) + else: + raise + + return ret |