Trait Utility 

pub trait Utility:
    Send
    + Sync
    + 'static {
    // Required methods
    fn new(context: UtilityContext) -> Result<Self, ApplicationError>
       where Self: Sized;
    fn invoke(
        &self,
        request: UtilityRequest,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>, CommandError>> + Send + '_>>;

    // Provided methods
    fn create_session(
        &self,
        _request: UtilitySessionRequest,
    ) -> Result<Box<dyn UtilitySession>, ApplicationError> { ... }
    fn shutdown(&self) -> Result<(), ApplicationError> { ... }
}

Stateful Rust implementation hosted in a sandboxed Chromium process.

Required Methods

fn new(context: UtilityContext) -> Result<Self, ApplicationError>

where Self: Sized,

Creates service state after Chromium launches the utility process.

fn invoke( &self, request: UtilityRequest, ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>, CommandError>> + Send + '_>>

Handles one binary request without blocking the Chromium utility sequence. Implementations should observe request.is_cancelled() during long work.

Provided Methods

fn create_session( &self, _request: UtilitySessionRequest, ) -> Result<Box<dyn UtilitySession>, ApplicationError>

Creates one long-lived session in this supervised Utility process.

fn shutdown(&self) -> Result<(), ApplicationError>

Performs service-specific cleanup before the process becomes idle.

Implementors