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Diffstat (limited to 'lib/ansible/plugins/lookup/nested.py')
-rw-r--r-- | lib/ansible/plugins/lookup/nested.py | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/lib/ansible/plugins/lookup/nested.py b/lib/ansible/plugins/lookup/nested.py new file mode 100644 index 0000000..e768dba --- /dev/null +++ b/lib/ansible/plugins/lookup/nested.py @@ -0,0 +1,85 @@ +# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com> +# (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: nested + version_added: "1.1" + short_description: composes a list with nested elements of other lists + description: + - Takes the input lists and returns a list with elements that are lists composed of the elements of the input lists + options: + _raw: + description: + - a set of lists + required: True +""" + +EXAMPLES = """ +- name: give users access to multiple databases + community.mysql.mysql_user: + name: "{{ item[0] }}" + priv: "{{ item[1] }}.*:ALL" + append_privs: yes + password: "foo" + with_nested: + - [ 'alice', 'bob' ] + - [ 'clientdb', 'employeedb', 'providerdb' ] +# As with the case of 'with_items' above, you can use previously defined variables.: + +- name: here, 'users' contains the above list of employees + community.mysql.mysql_user: + name: "{{ item[0] }}" + priv: "{{ item[1] }}.*:ALL" + append_privs: yes + password: "foo" + with_nested: + - "{{ users }}" + - [ 'clientdb', 'employeedb', 'providerdb' ] +""" + +RETURN = """ + _list: + description: + - A list composed of lists paring the elements of the input lists + type: list +""" + +from jinja2.exceptions import UndefinedError + +from ansible.errors import AnsibleError, AnsibleUndefinedVariable +from ansible.plugins.lookup import LookupBase +from ansible.utils.listify import listify_lookup_plugin_terms + + +class LookupModule(LookupBase): + + def _lookup_variables(self, terms, variables): + results = [] + for x in terms: + try: + intermediate = listify_lookup_plugin_terms(x, templar=self._templar, fail_on_undefined=True) + except UndefinedError as e: + raise AnsibleUndefinedVariable("One of the nested variables was undefined. The error was: %s" % e) + results.append(intermediate) + return results + + def run(self, terms, variables=None, **kwargs): + + terms = self._lookup_variables(terms, variables) + + my_list = terms[:] + my_list.reverse() + result = [] + if len(my_list) == 0: + raise AnsibleError("with_nested requires at least one element in the nested list") + result = my_list.pop() + while len(my_list) > 0: + result2 = self._combine(result, my_list.pop()) + result = result2 + new_result = [] + for x in result: + new_result.append(self._flatten(x)) + return new_result |