Struct PrintService 

pub struct PrintService { /* private fields */ }

Struct to manage the printing service, including printer handling and job processing.

Implementations

impl PrintService

pub async fn new(config: ConfigEnv) -> Self

Creates a new instance of the PrintService.

pub async fn send_to_printer( &self, printer_name: &str, data: &[u8], ) -> Result<(), Box<dyn Error + Send + Sync>>

Envía datos raw a la impresora usando printer.print() directamente

pub async fn open_drawer(&self, printer_name: &str) -> (i32, String)

Función específica para abrir cajón (wrapper más semántico)

pub async fn _find_printer(&self, printer_name: &str) -> Option<Printer>

Finds a printer by name from the cached list of printers.

Arguments

• printer_name: Name of the printer to locate.

Returns

• Option<Printer> containing the printer details if found.
• None if the printer does not exist in the cached list.

Trait Implementations

impl Clone for PrintService

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Service for PrintService

fn run<'life0, 'async_trait>( &'life0 self, action: Value, _write: WebSocketWrite, ) -> Pin<Box<dyn Future<Output = (i32, String)> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Executes a print service action based on the provided JSON input.

Arguments

• action - A JSON value containing the action details.
• _write - A WebSocketWrite (unused in this implementation).

Returns

A tuple containing:

• i32 - Status code (0 for success, 1 for failure).
• String - A descriptive message about the action result. If the action takes longer than 2 seconds, returns an asynchronous processing message.

fn as_any(&self) -> &dyn Any

Converts the service instance into a dyn Any reference.

Returns

A reference to dyn Any for dynamic type checks.

fn stop_service(&self)

Stops the print service, performing any necessary cleanup tasks.

fn get_version(&self) -> String

Retrieves the current version of the PrintService.

Returns

A String containing the version of the service.