Package io.streamnative.kafka.client.api

Class ProduceContext<K,V>

java.lang.Object

io.streamnative.kafka.client.api.ProduceContext<K,V>

public class ProduceContext<K,V>
extends Object

Context for producing messages.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ProduceContext.ProduceContextBuilder<K,V>

Constructor Summary

Constructors

Constructor	Description
ProduceContext()

Method Summary

Modifier and Type	Method	Description
static <K, V> ProduceContext.ProduceContextBuilder<K,V>	builder()
<T> void	complete(T metadata, Exception e)	Complete the internal `future` field.
<T> T	createV0ProducerRecord(Class<T> clazz)	Create an instance of Kafka's ProducerRecord less than 0.10.x.
<T> T	createV1ProducerRecord(Class<T> clazz)	Create an instance of Kafka's ProducerRecord less than 0.11.x.
<T, HeaderT> T	createV2ProducerRecord(Class<T> clazz, BiFunction<String,byte[],HeaderT> headerConstructor)	Create an instance of Kafka's ProducerRecord for kafka version higher than or equal to 0.11.x.
Future<RecordMetadata>	sendAsync()	Send the message using ProduceContext instead of using Producer directly.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ProduceContext

public ProduceContext()

Method Details

createV2ProducerRecord

public <T,
HeaderT> T createV2ProducerRecord(Class<T> clazz,
 BiFunction<String,byte[],HeaderT> headerConstructor)

Create an instance of Kafka's ProducerRecord for kafka version higher than or equal to 0.11.x.

Type Parameters:

T - it should be org.apache.kafka.clients.producer.ProducerRecord

HeaderT - it should be an implementation of org.apache.kafka.common.header.Header, e.g. RecordHeader

Parameters:

clazz - the class type of Kafka's ProducerRecord

headerConstructor - the constructor of Kafka's Header implementation

Returns:

an instance of org.apache.kafka.clients.producer.ProducerRecord

createV1ProducerRecord

public <T> T createV1ProducerRecord(Class<T> clazz)

Create an instance of Kafka's ProducerRecord less than 0.11.x. Because there is no header in ProducerRecord before 0.11.x.

Type Parameters:

T - it should be org.apache.kafka.clients.producer.ProducerRecord

Parameters:

clazz - the class type of Kafka's ProducerRecord

Returns:

an instance of org.apache.kafka.clients.producer.ProducerRecord

createV0ProducerRecord

public <T> T createV0ProducerRecord(Class<T> clazz)

Create an instance of Kafka's ProducerRecord less than 0.10.x. Because there is no timestamp in ProducerRecord before 0.10.x.

Type Parameters:

T - it should be org.apache.kafka.clients.producer.ProducerRecord

Parameters:

clazz - the class type of Kafka's ProducerRecord

Returns:

an instance of org.apache.kafka.clients.producer.ProducerRecord

complete

public <T> void complete(T metadata,
 Exception e)

Complete the internal `future` field.

Type Parameters:

T - it should be org.apache.kafka.clients.producer.RecordMetadata

Parameters:

metadata - the instance of Kafka's RecordMetadata

e - the exception to complete exceptionally if it's not null

sendAsync

public Future<RecordMetadata> sendAsync()

Send the message using ProduceContext instead of using Producer directly.

See Also:

• Producer.sendAsync(ProduceContext)

builder

public static <K,
V>
ProduceContext.ProduceContextBuilder<K,V> builder()