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# (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 annotations
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
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