Struct BoxPusher 

pub struct BoxPusher {
    pub pusher: Box<dyn Pusher<Error = Box<dyn AnyError>>>,
}

A type-erased pusher that boxes both the pusher and its error type.

Useful for FFI boundaries or heterogeneous collections of pushers.

Fields

pusher: Box<dyn Pusher<Error = Box<dyn AnyError>>>

The boxed, type-erased inner pusher.

Implementations

impl BoxPusher

pub fn new<P>(pusher: P) -> BoxPusher

where P: Pusher,

Box a concrete Pusher, erasing its error type.

pub fn upcast<E>(e: E) -> Box<dyn AnyError>

where E: AnyError,

Box an error into the type-erased AnyError form used by BoxPusher.

Trait Implementations

impl Pusher for BoxPusher

type Error = Box<dyn AnyError>

Error produced while pushing.

fn set_listener(&mut self, cb: Box<dyn FnMut(Range<u64>) + Send>)

Install a callback that fires whenever a chunk has been successfully pushed to its destination.

fn push( &mut self, range: &Range<u64>, content: Bytes, ) -> Result<(), (<BoxPusher as Pusher>::Error, Bytes)>

Write content covering the given range to the destination.

fn flush(&mut self) -> Result<(), <BoxPusher as Pusher>::Error>

Flush any buffered data to the destination.