mirror of
https://github.com/ansible-collections/community.general.git
synced 2024-09-14 20:13:21 +02:00
e30bb0958a
(cherry picked from commit da11a98cb7)
Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
210 lines
8.1 KiB
Python
210 lines
8.1 KiB
Python
# -*- coding: utf-8 -*-
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# (c) 2015-2021, Felix Fontein <felix@fontein.de>
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# (c) 2018 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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name: dependent
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short_description: Composes a list with nested elements of other lists or dicts which can depend on previous loop variables
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author: Felix Fontein (@felixfontein)
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version_added: 3.1.0
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description:
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- "Takes the input lists and returns a list with elements that are lists, dictionaries,
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or template expressions which evaluate to lists or dicts, composed of the elements of
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the input evaluated lists and dictionaries."
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options:
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_raw:
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description:
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- A list where the elements are one-element dictionaries, mapping a name to a string, list, or dictionary.
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The name is the index that is used in the result object. The value is iterated over as described below.
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- If the value is a list, it is simply iterated over.
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- If the value is a dictionary, it is iterated over and returned as if they would be processed by the
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R(ansible.builtin.dict2items filter,ansible_collections.ansible.builtin.dict2items_filter).
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- If the value is a string, it is evaluated as Jinja2 expressions which can access the previously chosen
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elements with C(item.<index_name>). The result must be a list or a dictionary.
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type: list
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elements: dict
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required: true
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"""
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EXAMPLES = """
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- name: Install/remove public keys for active admin users
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ansible.posix.authorized_key:
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user: "{{ item.admin.key }}"
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key: "{{ lookup('file', item.key.public_key) }}"
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state: "{{ 'present' if item.key.active else 'absent' }}"
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when: item.admin.value.active
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with_community.general.dependent:
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- admin: admin_user_data
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- key: admin_ssh_keys[item.admin.key]
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loop_control:
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# Makes the output readable, so that it doesn't contain the whole subdictionaries and lists
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label: "{{ [item.admin.key, 'active' if item.key.active else 'inactive', item.key.public_key] }}"
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vars:
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admin_user_data:
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admin1:
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name: Alice
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active: true
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admin2:
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name: Bob
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active: true
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admin_ssh_keys:
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admin1:
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- private_key: keys/private_key_admin1.pem
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public_key: keys/private_key_admin1.pub
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active: true
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admin2:
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- private_key: keys/private_key_admin2.pem
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public_key: keys/private_key_admin2.pub
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active: true
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- private_key: keys/private_key_admin2-old.pem
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public_key: keys/private_key_admin2-old.pub
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active: false
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- name: Update DNS records
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community.aws.route53:
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zone: "{{ item.zone.key }}"
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record: "{{ item.prefix.key ~ '.' if item.prefix.key else '' }}{{ item.zone.key }}"
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type: "{{ item.entry.key }}"
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ttl: "{{ item.entry.value.ttl | default(3600) }}"
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value: "{{ item.entry.value.value }}"
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state: "{{ 'absent' if (item.entry.value.absent | default(False)) else 'present' }}"
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overwrite: true
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loop_control:
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# Makes the output readable, so that it doesn't contain the whole subdictionaries and lists
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label: |-
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{{ [item.zone.key, item.prefix.key, item.entry.key,
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item.entry.value.ttl | default(3600),
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item.entry.value.absent | default(False), item.entry.value.value] }}
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with_community.general.dependent:
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- zone: dns_setup
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- prefix: item.zone.value
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- entry: item.prefix.value
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vars:
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dns_setup:
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example.com:
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'':
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A:
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value:
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- 1.2.3.4
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AAAA:
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value:
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- "2a01:1:2:3::1"
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'test._domainkey':
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TXT:
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ttl: 300
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value:
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- '"k=rsa; t=s; p=MIGfMA..."'
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example.org:
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'www':
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A:
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value:
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- 1.2.3.4
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- 5.6.7.8
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"""
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RETURN = """
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_list:
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description:
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- A list composed of dictionaries whose keys are the variable names from the input list.
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type: list
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elements: dict
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sample:
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- key1: a
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key2: test
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- key1: a
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key2: foo
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- key1: b
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key2: bar
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"""
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from ansible.errors import AnsibleLookupError
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from ansible.module_utils.common._collections_compat import Mapping, Sequence
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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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from ansible.template import Templar
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class LookupModule(LookupBase):
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def __evaluate(self, expression, templar, variables):
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"""Evaluate expression with templar.
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``expression`` is the expression to evaluate.
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``variables`` are the variables to use.
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"""
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templar.available_variables = variables or {}
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return templar.template("{0}{1}{2}".format("{{", expression, "}}"), cache=False)
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def __process(self, result, terms, index, current, templar, variables):
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"""Fills ``result`` list with evaluated items.
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``result`` is a list where the resulting items are placed.
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``terms`` is the parsed list of terms
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``index`` is the current index to be processed in the list.
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``current`` is a dictionary where the first ``index`` values are filled in.
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``variables`` are the variables currently available.
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"""
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# If we are done, add to result list:
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if index == len(terms):
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result.append(current.copy())
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return
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key, expression, values = terms[index]
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if expression is not None:
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# Evaluate expression in current context
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vars = variables.copy()
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vars['item'] = current.copy()
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try:
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values = self.__evaluate(expression, templar, variables=vars)
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except Exception as e:
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raise AnsibleLookupError(
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'Caught "{error}" while evaluating {key!r} with item == {item!r}'.format(
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error=e, key=key, item=current))
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if isinstance(values, Mapping):
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for idx, val in sorted(values.items()):
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current[key] = dict([('key', idx), ('value', val)])
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self.__process(result, terms, index + 1, current, templar, variables)
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elif isinstance(values, Sequence):
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for elt in values:
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current[key] = elt
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self.__process(result, terms, index + 1, current, templar, variables)
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else:
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raise AnsibleLookupError(
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'Did not obtain dictionary or list while evaluating {key!r} with item == {item!r}, but {type}'.format(
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key=key, item=current, type=type(values)))
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def run(self, terms, variables=None, **kwargs):
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"""Generate list."""
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result = []
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if len(terms) > 0:
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templar = Templar(loader=self._templar._loader)
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data = []
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vars_so_far = set()
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for index, term in enumerate(terms):
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if not isinstance(term, Mapping):
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raise AnsibleLookupError(
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'Parameter {index} must be a dictionary, got {type}'.format(
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index=index, type=type(term)))
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if len(term) != 1:
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raise AnsibleLookupError(
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'Parameter {index} must be a one-element dictionary, got {count} elements'.format(
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index=index, count=len(term)))
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k, v = list(term.items())[0]
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if k in vars_so_far:
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raise AnsibleLookupError(
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'The variable {key!r} appears more than once'.format(key=k))
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vars_so_far.add(k)
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if isinstance(v, string_types):
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data.append((k, v, None))
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elif isinstance(v, (Sequence, Mapping)):
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data.append((k, None, v))
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else:
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raise AnsibleLookupError(
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'Parameter {key!r} (index {index}) must have a value of type string, dictionary or list, got type {type}'.format(
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index=index, key=k, type=type(v)))
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self.__process(result, data, 0, {}, templar, variables)
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return result
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