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impl<A> ActorRef<A>
where
A: Actor,
{
/// Links two actors as siblings, ensuring they notify each other if either one dies.
///
/// # Example
///
/// ```
/// # use piying::Actor;
/// # use piying::actor::Spawn;
/// #
/// # #[derive(Actor)]
/// # struct MyActor;
/// #
/// # tokio_test::block_on(async {
/// let actor_ref = MyActor::spawn(MyActor);
/// let sibling_ref = MyActor::spawn(MyActor);
///
/// actor_ref.link(&sibling_ref).await;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// # });
/// ```
#[inline]
pub async fn link<B: Actor>(&self, sibling_ref: &ActorRef<B>) {
if self.id == sibling_ref.id {
return;
}
if self.id < sibling_ref.id {
let mut this_links = self.links.lock().await;
let mut sibling_links = sibling_ref.links.lock().await;
this_links.insert(
sibling_ref.id,
Link::Local(sibling_ref.weak_signal_mailbox()),
);
sibling_links.insert(self.id, Link::Local(self.weak_signal_mailbox()));
} else {
let mut sibling_links = sibling_ref.links.lock().await;
let mut this_links = self.links.lock().await;
this_links.insert(
sibling_ref.id,
Link::Local(sibling_ref.weak_signal_mailbox()),
);
sibling_links.insert(self.id, Link::Local(self.weak_signal_mailbox()));
}
}
/// Blockingly links two actors as siblings, ensuring they notify each other if either one dies.
///
/// This method is intended for use cases where you need to link actors in synchronous code.
/// For async contexts, [`link`] is preferred.
///
/// # Example
///
/// ```
/// use std::thread;
///
/// # use piying::Actor;
/// # use piying::actor::Spawn;
/// #
/// # #[derive(Actor)]
/// # struct MyActor;
/// #
/// # tokio_test::block_on(async {
/// let actor_ref = MyActor::spawn(MyActor);
/// let sibling_ref = MyActor::spawn(MyActor);
///
/// thread::spawn(move || {
/// actor_ref.blocking_link(&sibling_ref);
/// });
/// # });
/// ```
///
/// [`link`]: ActorRef::link
#[inline]
pub fn blocking_link<B: Actor>(&self, sibling_ref: &ActorRef<B>) {
if self.id == sibling_ref.id {
return;
}
if self.id < sibling_ref.id {
let mut this_links = self.links.blocking_lock();
let mut sibling_links = sibling_ref.links.blocking_lock();
this_links.insert(
sibling_ref.id,
Link::Local(sibling_ref.weak_signal_mailbox()),
);
sibling_links.insert(self.id, Link::Local(self.weak_signal_mailbox()));
} else {
let mut sibling_links = sibling_ref.links.blocking_lock();
let mut this_links = self.links.blocking_lock();
this_links.insert(
sibling_ref.id,
Link::Local(sibling_ref.weak_signal_mailbox()),
);
sibling_links.insert(self.id, Link::Local(self.weak_signal_mailbox()));
}
}
/// Links the local actor with a remote actor, ensuring they notify each other if either one dies.
///
/// # Example
///
/// ```no_run
/// # use piying::Actor;
/// # use piying::actor::{RemoteActorRef, Spawn};
/// #
/// # #[derive(Actor, piying::RemoteActor)]
/// # struct MyActor;
/// #
/// # #[derive(Actor, piying::RemoteActor)]
/// # struct OtherActor;
/// #
/// # tokio_test::block_on(async {
/// let actor_ref = MyActor::spawn(MyActor);
/// let sibling_ref = RemoteActorRef::<OtherActor>::lookup("other_actor").await?.unwrap();
///
/// actor_ref.link_remote(&sibling_ref).await?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// # });
/// ```
#[cfg(feature = "remote")]
pub async fn link_remote<B>(
&self,
sibling_ref: &RemoteActorRef<B>,
) -> Result<(), error::RemoteSendError<error::Infallible>>
where
A: remote::RemoteActor,
B: Actor + remote::RemoteActor,
{
if self.id == sibling_ref.id {
return Ok(());
}
remote::REMOTE_REGISTRY
.lock()
.await
.entry(self.id)
.or_insert_with(|| remote::RemoteRegistryActorRef::new(self.clone(), None));
self.links.lock().await.insert(
sibling_ref.id,
Link::Remote(std::borrow::Cow::Borrowed(B::REMOTE_ID)),
);
remote::ActorSwarm::get()
.ok_or(error::RemoteSendError::SwarmNotBootstrapped)?
.link::<A, B>(self.id, sibling_ref.id)
.await
}
/// Unlinks two previously linked sibling actors.
///
/// # Example
///
/// ```
/// # use piying::Actor;
/// # use piying::actor::Spawn;
/// #
/// # #[derive(Actor)]
/// # struct MyActor;
/// #
/// # tokio_test::block_on(async {
/// let actor_ref = MyActor::spawn(MyActor);
/// let sibling_ref = MyActor::spawn(MyActor);
///
/// actor_ref.link(&sibling_ref).await;
/// actor_ref.unlink(&sibling_ref).await;
/// # });
/// ```
#[inline]
pub async fn unlink<B: Actor>(&self, sibling_ref: &ActorRef<B>) {
if self.id == sibling_ref.id {
return;
}
if self.id < sibling_ref.id {
let mut this_links = self.links.lock().await;
let mut sibling_links = sibling_ref.links.lock().await;
this_links.remove(&sibling_ref.id);
sibling_links.remove(&self.id);
} else {
let mut sibling_links = sibling_ref.links.lock().await;
let mut this_links = self.links.lock().await;
this_links.remove(&sibling_ref.id);
sibling_links.remove(&self.id);
}
}
/// Blockingly unlinks two previously linked sibling actors.
///
/// This method is intended for use cases where you need to link actors in synchronous code.
/// For async contexts, [`unlink`] is preferred.
///
///
/// # Example
///
/// ```
/// # use std::thread;
/// #
/// # use piying::Actor;
/// # use piying::actor::Spawn;
/// #
/// # #[derive(Actor)]
/// # struct MyActor;
/// #
/// # tokio_test::block_on(async {
/// let actor_ref = MyActor::spawn(MyActor);
/// let sibling_ref = MyActor::spawn(MyActor);
///
/// thread::spawn(move || {
/// actor_ref.blocking_link(&sibling_ref);
/// actor_ref.blocking_unlink(&sibling_ref);
/// });
/// # });
/// ```
///
/// [`unlink`]: ActorRef::unlink
#[inline]
pub fn blocking_unlink<B: Actor>(&self, sibling_ref: &ActorRef<B>) {
if self.id == sibling_ref.id {
return;
}
if self.id < sibling_ref.id {
let mut this_links = self.links.blocking_lock();
let mut sibling_links = sibling_ref.links.blocking_lock();
this_links.remove(&sibling_ref.id);
sibling_links.remove(&self.id);
} else {
let mut sibling_links = sibling_ref.links.blocking_lock();
let mut this_links = self.links.blocking_lock();
this_links.remove(&sibling_ref.id);
sibling_links.remove(&self.id);
}
}
/// Unlinks the local actor with a previously linked remote actor.
///
/// # Example
///
/// ```
/// # use piying::Actor;
/// # use piying::actor::{RemoteActorRef, Spawn};
/// #
/// # #[derive(Actor, piying::RemoteActor)]
/// # struct MyActor;
/// #
/// # #[derive(Actor, piying::RemoteActor)]
/// # struct OtherActor;
/// #
/// # tokio_test::block_on(async {
/// let actor_ref = MyActor::spawn(MyActor);
/// let sibling_ref = RemoteActorRef::<OtherActor>::lookup("other_actor").await?.unwrap();
///
/// actor_ref.unlink_remote(&sibling_ref).await?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// # });
/// ```
#[cfg(feature = "remote")]
pub async fn unlink_remote<B>(
&self,
sibling_ref: &RemoteActorRef<B>,
) -> Result<(), error::RemoteSendError<error::Infallible>>
where
A: remote::RemoteActor,
B: Actor + remote::RemoteActor,
{
if self.id == sibling_ref.id {
return Ok(());
}
self.links.lock().await.remove(&sibling_ref.id);
remote::ActorSwarm::get()
.ok_or(error::RemoteSendError::SwarmNotBootstrapped)?
.unlink::<B>(self.id, sibling_ref.id)
.await
}
}