community.general.xml – Manage bits and pieces of XML files or strings
Note
This plugin is part of the community.general collection (version 3.8.1).
You might already have this collection installed if you are using the ansible
package. It is not included in ansible-core
. To check whether it is installed, run ansible-galaxy collection list
.
To install it, use: ansible-galaxy collection install community.general
.
To use it in a playbook, specify: community.general.xml
.
Synopsis
- A CRUD-like interface to managing bits of XML files.
Requirements
The below requirements are needed on the host that executes this module.
- lxml >= 2.3.0
Parameters
Parameter | Choices/Defaults | Comments |
---|---|---|
add_children list / elements=raw | Add additional child-element(s) to a selected element for a given xpath .Child elements must be given in a list and each item may be either a string (eg. children=ansible to add an empty <ansible/> child element), or a hash where the key is an element name and the value is the element value.This parameter requires xpath to be set. | |
attribute raw | The attribute to select when using parameter value .This is a string, not prepended with @ . | |
backup boolean |
| Create a backup file including the timestamp information so you can get the original file back if you somehow clobbered it incorrectly. |
content string |
| Search for a given xpath and get content.This parameter requires xpath to be set. |
count boolean |
| Search for a given xpath and provide the count of any matches.This parameter requires xpath to be set. |
input_type string |
| Type of input for add_children and set_children . |
insertafter boolean |
| Add additional child-element(s) after the last selected element for a given xpath .Child elements must be given in a list and each item may be either a string (eg. children=ansible to add an empty <ansible/> child element), or a hash where the key is an element name and the value is the element value.This parameter requires xpath to be set. |
insertbefore boolean |
| Add additional child-element(s) before the first selected element for a given xpath .Child elements must be given in a list and each item may be either a string (eg. children=ansible to add an empty <ansible/> child element), or a hash where the key is an element name and the value is the element value.This parameter requires xpath to be set. |
namespaces dictionary | The namespace prefix:uri mapping for the XPath expression.Needs to be a dict , not a list of items. | |
path path | Path to the file to operate on. This file must exist ahead of time. This parameter is required, unless xmlstring is given.aliases: dest, file | |
pretty_print boolean |
| Pretty print XML output. |
print_match boolean |
| Search for a given xpath and print out any matches.This parameter requires xpath to be set. |
set_children list / elements=raw | Set the child-element(s) of a selected element for a given xpath .Removes any existing children. Child elements must be specified as in add_children .This parameter requires xpath to be set. | |
state string |
| Set or remove an xpath selection (node(s), attribute(s)). aliases: ensure |
strip_cdata_tags boolean |
| Remove CDATA tags surrounding text values. Note that this might break your XML file if text values contain characters that could be interpreted as XML. |
value raw | Desired state of the selected attribute. Either a string, or to unset a value, the Python None keyword (YAML Equivalent, null ).Elements default to no value (but present). Attributes default to an empty string. | |
xmlstring string | A string containing XML on which to operate. This parameter is required, unless path is given. | |
xpath string | A valid XPath expression describing the item(s) you want to manipulate. Operates on the document root, / , by default. |
Notes
Note
- Use the
--check
and--diff
options when testing your expressions. - The diff output is automatically pretty-printed, so may not reflect the actual file content, only the file structure.
- This module does not handle complicated xpath expressions, so limit xpath selectors to simple expressions.
- Beware that in case your XML elements are namespaced, you need to use the
namespaces
parameter, see the examples. - Namespaces prefix should be used for all children of an element where namespace is defined, unless another namespace is defined for them.
See Also
See also
- Xml module development community wiki
-
More information related to the development of this xml module.
- Introduction to XPath
-
A brief tutorial on XPath (w3schools.com).
- XPath Reference document
-
The reference documentation on XSLT/XPath (developer.mozilla.org).
Examples
# Consider the following XML file: # # <business type="bar"> # <name>Tasty Beverage Co.</name> # <beers> # <beer>Rochefort 10</beer> # <beer>St. Bernardus Abbot 12</beer> # <beer>Schlitz</beer> # </beers> # <rating subjective="true">10</rating> # <website> # <mobilefriendly/> # <address>http://tastybeverageco.com</address> # </website> # </business> - name: Remove the 'subjective' attribute of the 'rating' element community.general.xml: path: /foo/bar.xml xpath: /business/rating/@subjective state: absent - name: Set the rating to '11' community.general.xml: path: /foo/bar.xml xpath: /business/rating value: 11 # Retrieve and display the number of nodes - name: Get count of 'beers' nodes community.general.xml: path: /foo/bar.xml xpath: /business/beers/beer count: yes register: hits - ansible.builtin.debug: var: hits.count # Example where parent XML nodes are created automatically - name: Add a 'phonenumber' element to the 'business' element community.general.xml: path: /foo/bar.xml xpath: /business/phonenumber value: 555-555-1234 - name: Add several more beers to the 'beers' element community.general.xml: path: /foo/bar.xml xpath: /business/beers add_children: - beer: Old Rasputin - beer: Old Motor Oil - beer: Old Curmudgeon - name: Add several more beers to the 'beers' element and add them before the 'Rochefort 10' element community.general.xml: path: /foo/bar.xml xpath: '/business/beers/beer[text()="Rochefort 10"]' insertbefore: yes add_children: - beer: Old Rasputin - beer: Old Motor Oil - beer: Old Curmudgeon # NOTE: The 'state' defaults to 'present' and 'value' defaults to 'null' for elements - name: Add a 'validxhtml' element to the 'website' element community.general.xml: path: /foo/bar.xml xpath: /business/website/validxhtml - name: Add an empty 'validatedon' attribute to the 'validxhtml' element community.general.xml: path: /foo/bar.xml xpath: /business/website/validxhtml/@validatedon - name: Add or modify an attribute, add element if needed community.general.xml: path: /foo/bar.xml xpath: /business/website/validxhtml attribute: validatedon value: 1976-08-05 # How to read an attribute value and access it in Ansible - name: Read an element's attribute values community.general.xml: path: /foo/bar.xml xpath: /business/website/validxhtml content: attribute register: xmlresp - name: Show an attribute value ansible.builtin.debug: var: xmlresp.matches[0].validxhtml.validatedon - name: Remove all children from the 'website' element (option 1) community.general.xml: path: /foo/bar.xml xpath: /business/website/* state: absent - name: Remove all children from the 'website' element (option 2) community.general.xml: path: /foo/bar.xml xpath: /business/website children: [] # In case of namespaces, like in below XML, they have to be explicitly stated. # # <foo xmlns="http://x.test" xmlns:attr="http://z.test"> # <bar> # <baz xmlns="http://y.test" attr:my_namespaced_attribute="true" /> # </bar> # </foo> # NOTE: There is the prefix 'x' in front of the 'bar' element, too. - name: Set namespaced '/x:foo/x:bar/y:baz/@z:my_namespaced_attribute' to 'false' community.general.xml: path: foo.xml xpath: /x:foo/x:bar/y:baz namespaces: x: http://x.test y: http://y.test z: http://z.test attribute: z:my_namespaced_attribute value: 'false' - name: Adding building nodes with floor subnodes from a YAML variable community.general.xml: path: /foo/bar.xml xpath: /business add_children: - building: # Attributes name: Scumm bar location: Monkey island # Subnodes _: - floor: Pirate hall - floor: Grog storage - construction_date: "1990" # Only strings are valid - building: Grog factory # Consider this XML for following example - # # <config> # <element name="test1"> # <text>part to remove</text> # </element> # <element name="test2"> # <text>part to keep</text> # </element> # </config> - name: Delete element node based upon attribute community.general.xml: path: bar.xml xpath: /config/element[@name='test1'] state: absent
Return Values
Common return values are documented here, the following are the fields unique to this module:
Key | Returned | Description |
---|---|---|
actions dictionary | success | A dictionary with the original xpath, namespaces and state. Sample: {'namespaces': ['namespace1', 'namespace2'], 'state=present': None, 'xpath': 'xpath'} |
backup_file string | when backup=yes | The name of the backup file that was created Sample: /path/to/file.xml.1942.2017-08-24@14:16:01~ |
count integer | when parameter 'count' is set | The count of xpath matches. Sample: 2 |
matches list / elements=string | when parameter 'print_match' is set | The xpath matches found. |
msg string | always | A message related to the performed action(s). |
xmlstring string | when parameter 'xmlstring' is set | An XML string of the resulting output. |
Authors
- Tim Bielawa (@tbielawa)
- Magnus Hedemark (@magnus919)
- Dag Wieers (@dagwieers)
© 2012–2018 Michael DeHaan
© 2018–2021 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/latest/collections/community/general/xml_module.html