Sender

risingwave_dml::txn_channel

Struct Sender 

Source 
pub struct Sender {
    pub tx: UnboundedSender<TxnMsgWithPermits>,
    permits: Arc<Permits>,
    max_chunk_permits: usize,
}
Expand description

The sender of the transaction channel with permit-based back-pressure.

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§tx: UnboundedSender<TxnMsgWithPermits>§permits: Arc<Permits>§max_chunk_permits: usize

The maximum permits required by a chunk. If there’re too many rows in a chunk, we only acquire these permits.

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impl Sender

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pub async fn send( &self, txn_msg: TxnMsg, notificator: Sender<usize>, ) -> Result<(), SendError<TxnMsg>>

Send a message, waiting until there are enough permits. Used to send transaction data messages.

Returns error if the receive half of the channel is closed, including the message passed.

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pub fn send_immediate( &self, txn_msg: TxnMsg, notificator: Sender<usize>, ) -> Result<(), SendError<TxnMsg>>

Send a message without permit acquiring. Used to send transaction control messages.

Returns error if the receive half of the channel is closed, including the message passed.

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pub fn is_closed(&self) -> bool

Trait Implementations§

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impl Clone for Sender

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fn clone(&self) -> Sender

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Sender

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

Formats the value using the given formatter. Read more

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impl Freeze for Sender

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impl !RefUnwindSafe for Sender

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impl Send for Sender

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impl Sync for Sender

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impl Unpin for Sender

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impl !UnwindSafe for Sender

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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