Refactor #16987: Explicit building of facets - Foreman

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Refactor #16987

closed

Explicit building of facets

Added by Lukas Zapletal over 7 years ago. Updated almost 6 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Shimon Shtein

Category:

Plugin integration

Target version:

1.14.0

Difficulty:

Triaged:

Bugzilla link:

Pull request:

https://github.com/theforeman/foreman/pull/3987

Fixed in Releases:

Found in Releases:

Red Hat JIRA:

Description

This is a ticket to track required refactoring of the Facet framework. Since I am in hurry with patch for Foreman 1.13 and downstream, I will propose a dirty patch into Katello. This ticket is about properly extending the Facet framework allowing facets to be created in a nice way when creating hosts in a different way (not via expected entry point).

Originally, this is needed for #16063

Related issues 3 (0 open — 3 closed)

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Updated by Lukas Zapletal over 7 years ago

Related to Bug #16063: Autoprovisioning fails with Katello plugin installed added

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Updated by Lukas Zapletal over 7 years ago

Fore more info visit https://github.com/Katello/katello/pull/6401

Shimon, I assigned to you if you don't mind.

This is not refactoring, but rather extending the code (bad wording).

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Updated by Shimon Shtein over 7 years ago

I suggest modifying #apply_inherited_attributes method to query facets about additional attributes that should be added to the host before it is created.
This won't solve the general case of building facets explicitly, unless we assume that "build_xxx_facet" method (which is added by the ActiveRecord framework) will be enough for facet initialization.
This could solve Katello's specific case, since the information to build content facet is available for the hostgroup that is being added to the host.

Basic outline of the suggested solution:
Each facet will have a class method (https://github.com/theforeman/foreman/blob/develop/app/models/host_facets/base.rb#L36) that will be called inside #apply_inherited_attributes. The result of this call will be added to the attributes list that is sent to ActiveRecord for further instantiation of the host.

Optional addition: the hostgroup could store a list of facets that should or should no be created by default - this list can be exposed to the user, so he can decide that despite the fact that the hostgroup contains info about a facet, that facet won't be created automatically.

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