nginx-formula/nginx/libtofs.jinja

102 lines
3.9 KiB
Plaintext
Raw Normal View History

{%- macro files_switch(source_files,
lookup=None,
default_files_switch=['id', 'os_family'],
indent_width=6,
v1_path_prefix='') %}
{#-
Returns a valid value for the "source" parameter of a "file.managed"
state function. This makes easier the usage of the Template Override and
Files Switch (TOFS) pattern.
Params:
* source_files: ordered list of files to look for
* lookup: key under '<tplroot>:tofs:source_files' to override
list of source files
* default_files_switch: if there's no config (e.g. pillar)
'<tplroot>:tofs:files_switch' this is the ordered list of grains to
use as selector switch of the directories under
"<path_prefix>/files"
* indent_witdh: indentation of the result value to conform to YAML
* v1_path_prefix: (deprecated) only used for injecting a path prefix into
the source, to support older TOFS configs
Example (based on a `tplroot` of `xxx`):
If we have a state:
Deploy configuration:
file.managed:
- name: /etc/yyy/zzz.conf
- source: {{ files_switch(['/etc/yyy/zzz.conf', '/etc/yyy/zzz.conf.jinja'],
lookup='Deploy configuration'
) }}
- template: jinja
In a minion with id=theminion and os_family=RedHat, it's going to be
rendered as:
Deploy configuration:
file.managed:
- name: /etc/yyy/zzz.conf
- source:
- salt://xxx/files/theminion/etc/yyy/zzz.conf
- salt://xxx/files/theminion/etc/yyy/zzz.conf.jinja
- salt://xxx/files/RedHat/etc/yyy/zzz.conf
- salt://xxx/files/RedHat/etc/yyy/zzz.conf.jinja
- salt://xxx/files/default/etc/yyy/zzz.conf
- salt://xxx/files/default/etc/yyy/zzz.conf.jinja
- template: jinja
#}
{#- Get the `tplroot` from `tpldir` #}
{%- set tplroot = tpldir.split('/')[0] %}
{%- set path_prefix = salt['config.get'](tplroot ~ ':tofs:path_prefix', tplroot) %}
{%- set files_dir = salt['config.get'](tplroot ~ ':tofs:dirs:files', 'files') %}
{%- set files_switch_list = salt['config.get'](
tplroot ~ ':tofs:files_switch',
default_files_switch
) %}
{#- Lookup source_files (v2), files (v1), or fallback to source_files parameter #}
{%- set src_files = salt['config.get'](
tplroot ~ ':tofs:source_files:' ~ lookup,
salt['config.get'](
tplroot ~ ':tofs:files:' ~ lookup,
source_files
)
) %}
{#- Only add to [''] when supporting older TOFS implementations #}
{%- set path_prefix_exts = [''] %}
{%- if v1_path_prefix != '' %}
{%- do path_prefix_exts.append(v1_path_prefix) %}
{%- endif %}
{%- for path_prefix_ext in path_prefix_exts %}
{%- set path_prefix_inc_ext = path_prefix ~ path_prefix_ext %}
{#- For older TOFS implementation, use `files_switch` from the config #}
{#- Use the default, new method otherwise #}
{%- set fsl = salt['config.get'](
tplroot ~ path_prefix_ext|replace('/', ':') ~ ':files_switch',
files_switch_list
) %}
{#- Append an empty value to evaluate as `default` in the loop below #}
{%- if '' not in fsl %}
{%- do fsl.append('') %}
{%- endif %}
{%- for fs in fsl %}
{%- for src_file in src_files %}
{%- if fs %}
{%- set fs_dir = salt['config.get'](fs, fs) %}
{%- else %}
{%- set fs_dir = salt['config.get'](tplroot ~ ':tofs:dirs:default', 'default') %}
{%- endif %}
{%- set url = [
'- salt:/',
path_prefix_inc_ext.strip('/'),
files_dir.strip('/'),
fs_dir.strip('/'),
src_file.strip('/'),
] | select | join('/') %}
{{ url | indent(indent_width, true) }}
{%- endfor %}
{%- endfor %}
{%- endfor %}
{%- endmacro %}