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