Architecture

Architecture

Contents

• Glossary of terms
• General architecture
  • Plugins
  • Backends
  • Storages
  • Frontends
• Storage architecture

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Glossary of terms

• Plugin - is a facility to unconditionally run some actions or programs before gpoa start.
• Backend - is a facility to retrieve settings from various sources like GPOs, FreeIPA, databases, network filesystems, etc.
• Storage - is a universal thing to store retrieved settings no matter how settings were acquired.
• Frontend - is a set of modules which are working each with its own part of storage and perform actions according to retrieved settings.

General architecture

Plugins

• ADP - runner for ADP application.
• roles - module to interact with libnss-role settings (disabled at the moment).

Backends

• nodomain_backend - Thing to read locally stored settings. This module is able to work even if machine is not part of Samba or FreeIPA domain.
• samba_backend - Thing to read settings from Samba domain.
• freeipa_backend - Planned. Thing to read settings from FreeIPA.

Storages

All storages are internal objects and are retrieved via factory method allowing transparent transition from one kind of storage to another.

• sqlite_registry - Simple SQLite3 database.

Frontends

• control_applier - Module to operate on ALT Linux control framework.
• systemd_applier - Module to start and stop systemd services.
• shortcuts_applier - Module to create XDG .desktop files for users.
• polkit_applier - Module to generate PolicyKit .rules.
• gsettings_applier - Module to deploy GSettings .override files.

Storage architecture

The storage consists of several simple tables which are not related to each other: