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90 lines
3.1 KiB
Python
90 lines
3.1 KiB
Python
# Copyright: (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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# Make coding more python3-ish
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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from ast import literal_eval
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from itertools import islice, chain
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import types
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from jinja2.runtime import StrictUndefined
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from ansible.module_utils._text import to_text
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from ansible.module_utils.common.collections import is_sequence, Mapping
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from ansible.module_utils.common.text.converters import container_to_text
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from ansible.module_utils.six import text_type, string_types
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from ansible.parsing.yaml.objects import AnsibleVaultEncryptedUnicode
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from ansible.utils.native_jinja import NativeJinjaText
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def _fail_on_undefined(data):
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"""Recursively find an undefined value in a nested data structure
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and properly raise the undefined exception.
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"""
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if isinstance(data, Mapping):
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for value in data.values():
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_fail_on_undefined(value)
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elif is_sequence(data):
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for item in data:
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_fail_on_undefined(item)
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else:
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if isinstance(data, StrictUndefined):
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# To actually raise the undefined exception we need to
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# access the undefined object otherwise the exception would
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# be raised on the next access which might not be properly
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# handled.
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# See https://github.com/ansible/ansible/issues/52158
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# and StrictUndefined implementation in upstream Jinja2.
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str(data)
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return data
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def ansible_native_concat(nodes):
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"""Return a native Python type from the list of compiled nodes. If the
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result is a single node, its value is returned. Otherwise, the nodes are
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concatenated as strings. If the result can be parsed with
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:func:`ast.literal_eval`, the parsed value is returned. Otherwise, the
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string is returned.
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https://github.com/pallets/jinja/blob/master/src/jinja2/nativetypes.py
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"""
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head = list(islice(nodes, 2))
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if not head:
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return None
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if len(head) == 1:
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out = _fail_on_undefined(head[0])
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# TODO send unvaulted data to literal_eval?
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if isinstance(out, AnsibleVaultEncryptedUnicode):
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return out.data
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if isinstance(out, NativeJinjaText):
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# Sometimes (e.g. ``| string``) we need to mark variables
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# in a special way so that they remain strings and are not
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# passed into literal_eval.
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# See:
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# https://github.com/ansible/ansible/issues/70831
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# https://github.com/pallets/jinja/issues/1200
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# https://github.com/ansible/ansible/issues/70831#issuecomment-664190894
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return out
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# short-circuit literal_eval for anything other than strings
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if not isinstance(out, string_types):
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return out
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else:
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if isinstance(nodes, types.GeneratorType):
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nodes = chain(head, nodes)
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out = u''.join([to_text(_fail_on_undefined(v)) for v in nodes])
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try:
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out = literal_eval(out)
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return out
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except (ValueError, SyntaxError, MemoryError):
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return out
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