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KafkaSink

Struct KafkaSink 

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pub struct KafkaSink { /* private fields */ }
Expand description

At-least-once Kafka sink backed by an idempotent acks=all producer.

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impl KafkaSink

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pub async fn start( bootstrap: impl Into<String>, topic_prefix: impl Into<String>, ) -> Result<Self, ConnectError>

Connect an idempotent Kafka producer.

§Errors

Returns [ConnectError::Backend] when the producer cannot connect.

Trait Implementations§

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impl Sink<Bytes, Bytes> for KafkaSink

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fn put<'life0, 'async_trait>( &'life0 mut self, records: Vec<ConnectRecord<Bytes, Bytes>>, ) -> Pin<Box<dyn Future<Output = Result<(), ConnectError>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Buffer a batch of records for writing. The sink may write through immediately or accumulate until flush. In both cases the records are not guaranteed durable until flush or commit returns. Read more
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fn flush<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<(), ConnectError>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Make every record accepted since the last flush or commit durable. The runtime calls this before it commits consumer offsets, so a successful flush is the guarantee that those records will not be re-delivered. Read more
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fn close<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<(), ConnectError>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Release any resources that the sink holds, such as connections and buffers. The default is a no-op. After close, the sink writes no further records. Read more
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fn supports_transactions(&self) -> bool

Whether this sink writes atomically and so can take part in exactly-once delivery. When false, the default, the runtime drives it at-least-once and never calls begin or abort.
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fn begin<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<(), ConnectError>> + Send + 'async_trait>>
where 'life0: 'async_trait, Self: 'async_trait,

Open a transaction that encloses the puts that follow, up to the next commit or abort. The runtime calls this only when supports_transactions is true, and only before a non-empty batch. Default: no-op. Read more
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fn commit<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<(), ConnectError>> + Send + 'async_trait>>
where 'life0: 'async_trait, Self: 'async_trait,

Atomically commit the records written since begin and make them durable. The default has no transaction support and delegates to flush. Read more
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fn abort<'life0, 'async_trait>( &'life0 mut self, ) -> Pin<Box<dyn Future<Output = Result<(), ConnectError>> + Send + 'async_trait>>
where 'life0: 'async_trait, Self: 'async_trait,

Discard the records written since begin and do not make them durable. The runtime calls this to roll back a failed interval. Default: no-op. Read more

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