113 lines
4.5 KiB
Django/Jinja
113 lines
4.5 KiB
Django/Jinja
{%- macro files_switch(source_files,
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lookup=None,
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default_files_switch=['id', 'os_family'],
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indent_width=6,
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use_subpath=False) %}
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{#-
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Returns a valid value for the "source" parameter of a "file.managed"
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state function. This makes easier the usage of the Template Override and
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Files Switch (TOFS) pattern.
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Params:
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* source_files: ordered list of files to look for
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* lookup: key under '<tplroot>:tofs:source_files' to prepend to the
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list of source files
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* default_files_switch: if there's no config (e.g. pillar)
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'<tplroot>:tofs:files_switch' this is the ordered list of grains to
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use as selector switch of the directories under
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"<path_prefix>/files"
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* indent_witdh: indentation of the result value to conform to YAML
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* use_subpath: defaults to `False` but if set, lookup the source file
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recursively from the current state directory up to `tplroot`
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Example (based on a `tplroot` of `xxx`):
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If we have a state:
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Deploy configuration:
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file.managed:
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- name: /etc/yyy/zzz.conf
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- source: {{ files_switch(['/etc/yyy/zzz.conf', '/etc/yyy/zzz.conf.jinja'],
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lookup='Deploy configuration'
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) }}
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- template: jinja
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In a minion with id=theminion and os_family=RedHat, it's going to be
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rendered as:
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Deploy configuration:
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file.managed:
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- name: /etc/yyy/zzz.conf
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- source:
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- salt://xxx/files/theminion/etc/yyy/zzz.conf
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- salt://xxx/files/theminion/etc/yyy/zzz.conf.jinja
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- salt://xxx/files/RedHat/etc/yyy/zzz.conf
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- salt://xxx/files/RedHat/etc/yyy/zzz.conf.jinja
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- salt://xxx/files/default/etc/yyy/zzz.conf
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- salt://xxx/files/default/etc/yyy/zzz.conf.jinja
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- template: jinja
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#}
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{#- Get the `tplroot` from `tpldir` #}
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{%- set tplroot = tpldir.split('/')[0] %}
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{%- set path_prefix = salt['config.get'](tplroot ~ ':tofs:path_prefix', tplroot) %}
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{%- set files_dir = salt['config.get'](tplroot ~ ':tofs:dirs:files', 'files') %}
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{%- set files_switch_list = salt['config.get'](
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tplroot ~ ':tofs:files_switch',
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default_files_switch
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) %}
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{#- Lookup source_files (v2), files (v1), or fallback to an empty list #}
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{%- set src_files = salt['config.get'](
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tplroot ~ ':tofs:source_files:' ~ lookup,
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salt['config.get'](tplroot ~ ':tofs:files:' ~ lookup, [])
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) %}
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{#- Append the default source_files #}
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{%- set src_files = src_files + source_files %}
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{#- Only add to [''] when supporting older TOFS implementations #}
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{%- set path_prefix_exts = [''] %}
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{%- if use_subpath and tplroot != tpldir %}
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{#- Walk directory tree to find {{ files_dir }} #}
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{%- set subpath_parts = tpldir.lstrip(tplroot).lstrip('/').split('/') %}
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{%- for path in subpath_parts %}
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{%- set subpath = subpath_parts[0:loop.index] | join('/') %}
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{%- do path_prefix_exts.append('/' ~ subpath) %}
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{%- endfor %}
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{%- endif %}
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{%- for path_prefix_ext in path_prefix_exts|reverse %}
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{%- set path_prefix_inc_ext = path_prefix ~ path_prefix_ext %}
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{#- For older TOFS implementation, use `files_switch` from the config #}
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{#- Use the default, new method otherwise #}
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{%- set fsl = salt['config.get'](
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tplroot ~ path_prefix_ext|replace('/', ':') ~ ':files_switch',
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files_switch_list
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) %}
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{#- Append an empty value to evaluate as `default` in the loop below #}
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{%- if '' not in fsl %}
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{%- do fsl.append('') %}
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{%- endif %}
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{%- for fs in fsl %}
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{%- for src_file in src_files %}
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{%- if fs %}
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{%- set fs_dirs = salt['config.get'](fs, fs) %}
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{%- else %}
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{%- set fs_dirs = salt['config.get'](tplroot ~ ':tofs:dirs:default', 'default') %}
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{%- endif %}
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{#- Force the `config.get` lookup result as a list where necessary #}
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{#- since we need to also handle grains that are lists #}
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{%- if fs_dirs is string %}
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{%- set fs_dirs = [fs_dirs] %}
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{%- endif %}
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{%- for fs_dir in fs_dirs %}
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{%- set url = [
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'- salt:/',
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path_prefix_inc_ext.strip('/'),
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files_dir.strip('/'),
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fs_dir.strip('/'),
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src_file.strip('/'),
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] | select | join('/') %}
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{{ url | indent(indent_width, true) }}
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{%- endfor %}
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{%- endfor %}
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{%- endfor %}
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{%- endfor %}
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{%- endmacro %}
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