Module thermal_set_value_updater_trait

Trait for updating of set values for either heating or ventilation control Defines a generic trait for updating thermal set points from a data source.

This module provides the ThermalSetValueUpdaterTrait, an abstraction that decouples the core thermal control logic (e.g., for heating or ventilation) from the specific implementation of how set point values are retrieved.

Key Components

• ThermalSetValueUpdaterTrait: A trait that defines a single method, update_set_value. Any struct implementing this trait is responsible for fetching the latest “on” and “off” temperature thresholds and updating the provided variables.

Design and Purpose

The primary purpose of this trait is to enable Dependency Inversion and improve the system’s testability and modularity.

• Decoupling: High-level components, like a ThermalController, do not need to know how or from where the set points are fetched. They only need to interact with this trait. This means the data could come from a SQL database, a configuration file, or even a remote API without changing the controller’s code.

• Testability: This abstraction is critical for unit testing. In a test environment, a mock implementation of ThermalSetValueUpdaterTrait can be created. This mock can simulate various scenarios—such as providing fixed values, returning updated values, or simulating database errors—all without requiring a live database connection. This makes tests fast, reliable, and self-contained.

Traits

ThermalSetValueUpdaterTrait

Trait for updating the set values of either ventilation or heating with values from the database. This trait allows running the main control with a mock implementation for testing.