mirror of
https://github.com/ansible-collections/community.general.git
synced 2024-09-14 20:13:21 +02:00
160 lines
5.4 KiB
Python
160 lines
5.4 KiB
Python
# -*- coding: utf-8 -*-
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# (c) 2015, Filipe Niero Felisbino <filipenf@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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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: json_query
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short_description: Select a single element or a data subset from a complex data structure
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description:
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- This filter lets you query a complex JSON structure and iterate over it using a loop structure.
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positional: expr
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options:
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_input:
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description:
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- The JSON data to query.
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type: any
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required: true
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expr:
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description:
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- The query expression.
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- See U(http://jmespath.org/examples.html) for examples.
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type: string
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required: true
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requirements:
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- jmespath
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'''
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EXAMPLES = '''
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- name: Define data to work on in the examples below
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ansible.builtin.set_fact:
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domain_definition:
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domain:
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cluster:
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- name: cluster1
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- name: cluster2
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server:
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- name: server11
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cluster: cluster1
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port: '8080'
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- name: server12
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cluster: cluster1
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port: '8090'
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- name: server21
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cluster: cluster2
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port: '9080'
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- name: server22
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cluster: cluster2
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port: '9090'
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library:
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- name: lib1
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target: cluster1
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- name: lib2
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target: cluster2
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- name: Display all cluster names
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ansible.builtin.debug:
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var: item
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loop: "{{ domain_definition | community.general.json_query('domain.cluster[*].name') }}"
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- name: Display all server names
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ansible.builtin.debug:
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var: item
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loop: "{{ domain_definition | community.general.json_query('domain.server[*].name') }}"
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- name: Display all ports from cluster1
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ansible.builtin.debug:
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var: item
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loop: "{{ domain_definition | community.general.json_query(server_name_cluster1_query) }}"
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vars:
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server_name_cluster1_query: "domain.server[?cluster=='cluster1'].port"
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- name: Display all ports from cluster1 as a string
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ansible.builtin.debug:
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msg: "{{ domain_definition | community.general.json_query('domain.server[?cluster==`cluster1`].port') | join(', ') }}"
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- name: Display all ports from cluster1
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ansible.builtin.debug:
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var: item
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loop: "{{ domain_definition | community.general.json_query('domain.server[?cluster==''cluster1''].port') }}"
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- name: Display all server ports and names from cluster1
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ansible.builtin.debug:
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var: item
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loop: "{{ domain_definition | community.general.json_query(server_name_cluster1_query) }}"
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vars:
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server_name_cluster1_query: "domain.server[?cluster=='cluster2'].{name: name, port: port}"
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- name: Display all ports from cluster1
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ansible.builtin.debug:
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msg: "{{ domain_definition | to_json | from_json | community.general.json_query(server_name_query) }}"
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vars:
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server_name_query: "domain.server[?starts_with(name,'server1')].port"
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- name: Display all ports from cluster1
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ansible.builtin.debug:
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msg: "{{ domain_definition | to_json | from_json | community.general.json_query(server_name_query) }}"
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vars:
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server_name_query: "domain.server[?contains(name,'server1')].port"
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'''
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RETURN = '''
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_value:
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description: The result of the query.
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type: any
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'''
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from ansible.errors import AnsibleError, AnsibleFilterError
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try:
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import jmespath
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HAS_LIB = True
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except ImportError:
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HAS_LIB = False
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def json_query(data, expr):
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'''Query data using jmespath query language ( http://jmespath.org ). Example:
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- ansible.builtin.debug: msg="{{ instance | json_query(tagged_instances[*].block_device_mapping.*.volume_id') }}"
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'''
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if not HAS_LIB:
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raise AnsibleError('You need to install "jmespath" prior to running '
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'json_query filter')
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# Hack to handle Ansible Unsafe text, AnsibleMapping and AnsibleSequence
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# See issue: https://github.com/ansible-collections/community.general/issues/320
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jmespath.functions.REVERSE_TYPES_MAP['string'] = jmespath.functions.REVERSE_TYPES_MAP['string'] + ('AnsibleUnicode', 'AnsibleUnsafeText', )
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jmespath.functions.REVERSE_TYPES_MAP['array'] = jmespath.functions.REVERSE_TYPES_MAP['array'] + ('AnsibleSequence', )
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jmespath.functions.REVERSE_TYPES_MAP['object'] = jmespath.functions.REVERSE_TYPES_MAP['object'] + ('AnsibleMapping', )
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try:
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return jmespath.search(expr, data)
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except jmespath.exceptions.JMESPathError as e:
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raise AnsibleFilterError('JMESPathError in json_query filter plugin:\n%s' % e)
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except Exception as e:
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# For older jmespath, we can get ValueError and TypeError without much info.
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raise AnsibleFilterError('Error in jmespath.search in json_query filter plugin:\n%s' % e)
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class FilterModule(object):
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''' Query filter '''
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def filters(self):
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return {
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'json_query': json_query
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}
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