116 lines
4.7 KiB
Django/Jinja
116 lines
4.7 KiB
Django/Jinja
{%- macro files_switch(
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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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{#-
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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_width: 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(
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["/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", 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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{%- set fsl = fsl + [""] %}
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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"](
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tplroot ~ ":tofs:dirs:default", "default"
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) %}
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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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{#- strip empty elements by using a select #}
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{%- set url = (
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[
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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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]
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| select
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| join("/")
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) %}
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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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