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BidiTransport

xmtp_api_backend::queries

Struct BidiTransport 

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pub struct BidiTransport<B: TransportBinding>
where
    B::GroupMessage: Clone,
    B::WelcomeMessage: Clone,
{ /* private fields */ }
Expand description

A cloneable handle to the connection and topic ledger task.

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impl<B: TransportBinding> BidiTransport<B>
where B::GroupMessage: Clone, B::WelcomeMessage: Clone,

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pub fn new<O, Fut>(opener: O, initially_suspended: bool) -> Self
where O: Fn(B::Mutate) -> Fut + MaybeSend + MaybeSync + 'static, Fut: Future<Output = Result<Connection<B>, OpenError>> + MaybeSend + 'static,

Open lazily through opener. A suspended transport waits for resume.

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pub fn new_within<O, Fut>( opener: O, initially_suspended: bool, mutate: MutateLimits, ) -> Self
where O: Fn(B::Mutate) -> Fut + MaybeSend + MaybeSync + 'static, Fut: Future<Output = Result<Connection<B>, OpenError>> + MaybeSend + 'static,

Open lazily, chunking interest updates to what the deployment published (CFG-064).

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pub async fn lease( &self, subs: Vec<(Topic, B::Cursor)>, depth: usize, ) -> Result<TopicLease<B>, TransportError>

Register topics with exclusive floors and a bounded event channel. Refuse empty leases and leases that would exceed the wire topic limit. While suspended, register locally without opening a connection.

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pub async fn lease_ordered( &self, subs: Vec<(Topic, B::Cursor)>, depth: usize, limits: IncomingBatchLimits, ) -> Result<TopicLease<B>, TransportError>

Register an ordered raw receiver. Receipt acknowledgements raise its resume floors.

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pub async fn suspend(&self) -> Result<(), TransportError>

Half-close the connection. Keep leases and positions for resume.

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pub fn enqueue_suspend(&self) -> Result<Receiver<()>, TransportError>

Queue suspend synchronously so callers can order lifecycle commands.

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pub async fn resume(&self) -> Result<(), TransportError>

Reopen and wait until every update is acknowledged and every target is met. A later suspend or removal of the last lease also releases this waiter.

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pub fn enqueue_resume(&self) -> Result<Receiver<()>, TransportError>

Queue resume without waiting for catch-up. Return its completion receiver.

Trait Implementations§

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impl<B: TransportBinding> Clone for BidiTransport<B>
where B::GroupMessage: Clone, B::WelcomeMessage: Clone,

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

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Add an aggregate function order Read more
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🔬This is a nightly-only experimental API. (clone_to_uninit)
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