Trait ApplyExecutor 

pub trait ApplyExecutor {
    // Required method
    fn apply_component(
        &self,
        component_id: &str,
        proposed_version: &str,
    ) -> Result<(), String>;
}

Trait for executing a single component update.

Implementations can invoke shell scripts, Rust-native installers, or be mocked for testing.

No Send + Sync bound: ApplyEngine::apply runs components synchronously on the calling thread (a sequential for loop, no spawn), and the engine is never moved across threads. Dropping the auto-trait bound lets an executor hold non-Send state that lives for the whole apply — e.g. the inline ratatui Terminal for the animated apply panel, which must be drawn from the same thread that drives the event loop.

Required Methods

fn apply_component( &self, component_id: &str, proposed_version: &str, ) -> Result<(), String>

Apply a single component update.

Returns Ok(()) on success, Err with a descriptive message on failure.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl ApplyExecutor for NoOpExecutor

impl ApplyExecutor for RegistryExecutor