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name: first_found
author: Seth Vidal (!UNKNOWN) <skvidal@fedoraproject.org>
version_added: historical
short_description: return first file found from list
description:
- This lookup checks a list of files and paths and returns the full path to the first combination found.
- As all lookups, when fed relative paths it will try use the current task's location first and go up the chain
to the containing locations of role / play / include and so on.
- The list of files has precedence over the paths searched.
For example, A task in a role has a 'file1' in the play's relative path, this will be used, 'file2' in role's relative path will not.
- Either a list of files C(_terms) or a key C(files) with a list of files is required for this plugin to operate.
notes:
- This lookup can be used in 'dual mode', either passing a list of file names or a dictionary that has C(files) and C(paths).
options:
_terms:
description: A list of file names.
files:
description: A list of file names.
type: list
elements: string
default: []
paths:
description: A list of paths in which to look for the files.
type: list
elements: string
default: []
skip:
type: boolean
default: False
description:
- When C(True), return an empty list when no files are matched.
- This is useful when used with C(with_first_found), as an empty list return to C(with_) calls
causes the calling task to be skipped.
- When used as a template via C(lookup) or C(query), setting I(skip=True) will *not* cause the task to skip.
Tasks must handle the empty list return from the template.
- When C(False) and C(lookup) or C(query) specifies I(errors='ignore') all errors (including no file found,
but potentially others) return an empty string or an empty list respectively.
- When C(True) and C(lookup) or C(query) specifies I(errors='ignore'), no file found will return an empty
list and other potential errors return an empty string or empty list depending on the template call
(in other words return values of C(lookup) v C(query)).
a�
- name: Set _found_file to the first existing file, raising an error if a file is not found
ansible.builtin.set_fact:
_found_file: "{{ lookup('ansible.builtin.first_found', findme) }}"
vars:
findme:
- /path/to/foo.txt
- bar.txt # will be looked in files/ dir relative to role and/or play
- /path/to/biz.txt
- name: Set _found_file to the first existing file, or an empty list if no files found
ansible.builtin.set_fact:
_found_file: "{{ lookup('ansible.builtin.first_found', files, paths=['/extra/path'], skip=True) }}"
vars:
files:
- /path/to/foo.txt
- /path/to/bar.txt
- name: Include tasks only if one of the files exist, otherwise skip the task
ansible.builtin.include_tasks:
file: "{{ item }}"
with_first_found:
- files:
- path/tasks.yaml
- path/other_tasks.yaml
skip: True
- name: Include tasks only if one of the files exists, otherwise skip
ansible.builtin.include_tasks: '{{ tasks_file }}'
when: tasks_file != ""
vars:
tasks_file: "{{ lookup('ansible.builtin.first_found', files=['tasks.yaml', 'other_tasks.yaml'], errors='ignore') }}"
- name: |
copy first existing file found to /some/file,
looking in relative directories from where the task is defined and
including any play objects that contain it
ansible.builtin.copy:
src: "{{ lookup('ansible.builtin.first_found', findme) }}"
dest: /some/file
vars:
findme:
- foo
- "{{ inventory_hostname }}"
- bar
- name: same copy but specific paths
ansible.builtin.copy:
src: "{{ lookup('ansible.builtin.first_found', params) }}"
dest: /some/file
vars:
params:
files:
- foo
- "{{ inventory_hostname }}"
- bar
paths:
- /tmp/production
- /tmp/staging
- name: INTERFACES | Create Ansible header for /etc/network/interfaces
ansible.builtin.template:
src: "{{ lookup('ansible.builtin.first_found', findme)}}"
dest: "/etc/foo.conf"
vars:
findme:
- "{{ ansible_virtualization_type }}_foo.conf"
- "default_foo.conf"
- name: read vars from first file found, use 'vars/' relative subdir
ansible.builtin.include_vars: "{{lookup('ansible.builtin.first_found', params)}}"
vars:
params:
files:
- '{{ ansible_distribution }}.yml'
- '{{ ansible_os_family }}.yml'
- default.yml
paths:
- 'vars'
zW
_raw:
description:
- path to file found
type: list
elements: path
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