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Christoph Fiehe dae2157bb7
merge_variables: extended merge capabilities added (#11536)
* merge_variables: extended merge capabilities added

This extension gives you more control over the variable merging process of the lookup plugin `merge_variables`. It closes the gap between Puppet's Hiera merging capabilities and the limitations of Ansible's default variable plugin `host_group_vars` regarding fragment-based value definition. You can now decide which merge strategy should be applied to dicts, lists, and other types. Furthermore, you can specify a merge strategy that should be applied in case of type conflicts.

The default behavior of the plugin has been preserved so that it is fully backward-compatible with the already implemented state.

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* Update changelogs/fragments/11536-merge-variables-extended-merging-capabilities.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update plugins/lookup/merge_variables.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* Periods added at the end of each choice description

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* Update plugins/lookup/merge_variables.py

Co-authored-by: Mark <40321020+m-a-r-k-e@users.noreply.github.com>

* ref: follow project standard for choice descriptions

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* ref: more examples added and refactoring

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* Update plugins/lookup/merge_variables.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* ref: some more comments to examples added

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* fix: unused import removed

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* ref: re-add "merge" to strategy map

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* Update comments

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* Specification of transformations solely as string

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* Comments updated

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* ref: `append_rp` and `prepend_rp` removed
feat: options dict for list transformations re-added
feat: allow setting `keep` for dedup transformation with possible values: `first` (default) and `last`

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* ref: improve options documentation

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* ref: documentation improved, avoiding words like newer or older in merge description

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* Update plugins/lookup/merge_variables.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* ref: "prio" replaced by "dict"

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

* feat: two integration tests added

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>

---------

Signed-off-by: Fiehe Christoph  <c.fiehe@eurodata.de>
Co-authored-by: Fiehe Christoph <c.fiehe@eurodata.de>
Co-authored-by: Felix Fontein <felix@fontein.de>
Co-authored-by: Mark <40321020+m-a-r-k-e@users.noreply.github.com>
2026-03-19 22:45:44 +01:00
..
fragments merge_variables: extended merge capabilities added (#11536) 2026-03-19 22:45:44 +01:00
.gitignore Add more default license and copyright notices (#5087) 2022-08-08 08:44:19 +02:00
changelog.yaml Prepare main for after 12.0.0 release. 2025-11-03 18:37:39 +01:00
changelog.yaml.license Make reuse conformant (#5138) 2022-08-21 08:27:01 +02:00
config.yaml Normalize changelog configs. 2025-07-27 16:36:35 +02:00