restate-sdk 0.10.0

Restate SDK for Rust
Documentation 
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use crate::context::InvocationHandle;
use crate::errors::TerminalError;
use std::future::Future;
use std::marker::PhantomData;
use std::pin::Pin;
use std::task::{Context, Poll};

/// Future that traps the execution at this point, but keeps waking up the waker
pub struct TrapFuture<T>(PhantomData<fn() -> T>);

impl<T> Default for TrapFuture<T> {
    fn default() -> Self {
        Self(PhantomData)
    }
}

impl<T> Future for TrapFuture<T> {
    type Output = T;

    fn poll(self: Pin<&mut Self>, ctx: &mut Context<'_>) -> Poll<T> {
        ctx.waker().wake_by_ref();
        Poll::Pending
    }
}

impl<T> InvocationHandle for TrapFuture<T> {
    fn invocation_id(&self) -> impl Future<Output = Result<String, TerminalError>> + Send {
        TrapFuture::default()
    }

    fn cancel(&self) -> impl Future<Output = Result<(), TerminalError>> + Send {
        TrapFuture::default()
    }
}