Struct ProcedureStream 

pub struct ProcedureStream { /* private fields */ }

Type-erased async stream of procedure results.

Unifies single-value responses (queries, mutations) and streaming responses (subscriptions) behind a common Stream interface.

Implementations

impl ProcedureStream

pub fn from_stream<S>(stream: S) -> Self

where S: Stream<Item = Result<DynOutput, ProcedureError>> + Send + 'static,

Create from an existing stream.

pub fn from_future<F>(future: F) -> Self

where F: Future<Output = Result<DynOutput, ProcedureError>> + Send + 'static,

Create from a single-value future (for queries and mutations).

pub fn error(err: ProcedureError) -> Self

Create an error stream that yields a single error.

Trait Implementations

impl Debug for ProcedureStream

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Stream for ProcedureStream

type Item = Result<DynOutput, ProcedureError>

Values yielded by the stream.

fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_>, ) -> Poll<Option<Self::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted.

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream.