Class KafkaProducer<K,V>

java.lang.Object

io.vertx.rxjava3.kafka.client.producer.KafkaProducer<K,V>

All Implemented Interfaces:

io.vertx.lang.rx.RxDelegate, StreamBase, WriteStream<KafkaProducerRecord<K,V>>

public class KafkaProducer<K,V>
extends Object
implements io.vertx.lang.rx.RxDelegate, WriteStream<KafkaProducerRecord<K,V>>

Vert.x Kafka producer.

The WriteStream.write(T) provides global control over writing a record.

NOTE: This class has been automatically generated from the original non RX-ified interface using Vert.x codegen.

Field Summary

Fields

Modifier and Type	Field	Description
static final io.vertx.lang.rx.TypeArg<KafkaProducer>	__TYPE_ARG
final io.vertx.lang.rx.TypeArg<K>	__typeArg_0
final io.vertx.lang.rx.TypeArg<V>	__typeArg_1

Constructor Summary

Constructors

Constructor	Description
KafkaProducer(KafkaProducer delegate)
KafkaProducer(Object delegate, io.vertx.lang.rx.TypeArg<K> typeArg_0, io.vertx.lang.rx.TypeArg<V> typeArg_1)

Method Summary

Modifier and Type	Method	Description
Completable	abortTransaction()	Aborts the ongoing transaction.
Completable	beginTransaction()	Starts a new kafka transaction.
Completable	close()	Close the producer
Completable	close(long timeout)	Close the producer
Completable	commitTransaction()	Commits the ongoing transaction.
static <K,V> KafkaProducer<K,V>	create(Vertx vertx, Map<String,String> config)	Create a new KafkaProducer instance
static <K,V> KafkaProducer<K,V>	create(Vertx vertx, Map<String,String> config, Class<K> keyType, Class<V> valueType)	Create a new KafkaProducer instance
static <K,V> KafkaProducer<K,V>	create(Vertx vertx, org.apache.kafka.clients.producer.Producer<K,V> producer)	Create a new KafkaProducer instance from a native .
static <K,V> KafkaProducer<K,V>	create(Vertx vertx, org.apache.kafka.clients.producer.Producer<K,V> producer, KafkaClientOptions options)	Create a new KafkaProducer instance from a native .
static <K,V> KafkaProducer<K,V>	createShared(Vertx vertx, String name, KafkaClientOptions options)	Get or create a KafkaProducer instance which shares its stream with any other KafkaProducer created with the same name
static <K,V> KafkaProducer<K,V>	createShared(Vertx vertx, String name, KafkaClientOptions options, Class<K> keyType, Class<V> valueType)	Get or create a KafkaProducer instance which shares its stream with any other KafkaProducer created with the same name
static <K,V> KafkaProducer<K,V>	createShared(Vertx vertx, String name, Map<String,String> config)	Get or create a KafkaProducer instance which shares its stream with any other KafkaProducer created with the same name
static <K,V> KafkaProducer<K,V>	createShared(Vertx vertx, String name, Map<String,String> config, Class<K> keyType, Class<V> valueType)	Get or create a KafkaProducer instance which shares its stream with any other KafkaProducer created with the same name
KafkaProducer<K,V>	drainHandler(Handler<Void> handler)	Set a drain handler on the stream.
Completable	end()	Ends the stream.
Completable	end(KafkaProducerRecord<K,V> data)	Same as WriteStream.end() but writes some data to the stream before ending.
boolean	equals(Object o)
KafkaProducer<K,V>	exceptionHandler(Handler<Throwable> handler)	Set an exception handler on the write stream.
Completable	flush()	Invoking this method makes all buffered records immediately available to write
KafkaProducer	getDelegate()
int	hashCode()
Completable	initTransactions()	Initializes the underlying kafka transactional producer.
static <K,V> KafkaProducer<K,V>	newInstance(KafkaProducer arg)
static <K,V> KafkaProducer<K,V>	newInstance(KafkaProducer arg, io.vertx.lang.rx.TypeArg<K> __typeArg_K, io.vertx.lang.rx.TypeArg<V> __typeArg_V)
Single<List<PartitionInfo>>	partitionsFor(String topic)	Get the partition metadata for the give topic.
Completable	rxAbortTransaction()	Aborts the ongoing transaction.
Completable	rxBeginTransaction()	Starts a new kafka transaction.
Completable	rxClose()	Close the producer
Completable	rxClose(long timeout)	Close the producer
Completable	rxCommitTransaction()	Commits the ongoing transaction.
Completable	rxEnd()	Ends the stream.
Completable	rxEnd(KafkaProducerRecord<K,V> data)	Same as WriteStream.end() but writes some data to the stream before ending.
Completable	rxFlush()	Invoking this method makes all buffered records immediately available to write
Completable	rxInitTransactions()	Initializes the underlying kafka transactional producer.
Single<List<PartitionInfo>>	rxPartitionsFor(String topic)	Get the partition metadata for the give topic.
Single<RecordMetadata>	rxSend(KafkaProducerRecord<K,V> record)	Asynchronously write a record to a topic
Completable	rxWrite(KafkaProducerRecord<K,V> data)	Write some data to the stream.
Single<RecordMetadata>	send(KafkaProducerRecord<K,V> record)	Asynchronously write a record to a topic
KafkaProducer<K,V>	setWriteQueueMaxSize(int i)	Set the maximum size of the write queue to maxSize.
WriteStreamObserver<KafkaProducerRecord<K,V>>	toObserver()
String	toString()
WriteStreamSubscriber<KafkaProducerRecord<K,V>>	toSubscriber()
Completable	write(KafkaProducerRecord<K,V> data)	Write some data to the stream.
boolean	writeQueueFull()	This will return true if there are more bytes in the write queue than the value set using setWriteQueueMaxSize(int)

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

__TYPE_ARG

public static final io.vertx.lang.rx.TypeArg<KafkaProducer> __TYPE_ARG

__typeArg_0

public final io.vertx.lang.rx.TypeArg<K> __typeArg_0

__typeArg_1

public final io.vertx.lang.rx.TypeArg<V> __typeArg_1

Constructor Details

KafkaProducer

public KafkaProducer(KafkaProducer delegate)

KafkaProducer

public KafkaProducer(Object delegate,
 io.vertx.lang.rx.TypeArg<K> typeArg_0,
 io.vertx.lang.rx.TypeArg<V> typeArg_1)

Method Details

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getDelegate

public KafkaProducer getDelegate()

Specified by:

getDelegate in interface io.vertx.lang.rx.RxDelegate

Specified by:

getDelegate in interface StreamBase

Specified by:

getDelegate in interface WriteStream<K>

toObserver

public WriteStreamObserver<KafkaProducerRecord<K,V>> toObserver()

Specified by:

toObserver in interface WriteStream<K>

toSubscriber

public WriteStreamSubscriber<KafkaProducerRecord<K,V>> toSubscriber()

Specified by:

toSubscriber in interface WriteStream<K>

write

public Completable write(KafkaProducerRecord<K,V> data)

Write some data to the stream.

The data is usually put on an internal write queue, and the write actually happens asynchronously. To avoid running out of memory by putting too much on the write queue, check the WriteStream.writeQueueFull() method before writing. This is done automatically if using a .

When the data is moved from the queue to the actual medium, the returned will be completed with the write result, e.g the future is succeeded when a server HTTP response buffer is written to the socket and failed if the remote client has closed the socket while the data was still pending for write.

Specified by:

write in interface WriteStream<K>

Parameters:

data - the data to write

Returns:

a future completed with the write result

rxWrite

public Completable rxWrite(KafkaProducerRecord<K,V> data)

Write some data to the stream.

The data is usually put on an internal write queue, and the write actually happens asynchronously. To avoid running out of memory by putting too much on the write queue, check the WriteStream.writeQueueFull() method before writing. This is done automatically if using a .

When the data is moved from the queue to the actual medium, the returned will be completed with the write result, e.g the future is succeeded when a server HTTP response buffer is written to the socket and failed if the remote client has closed the socket while the data was still pending for write.

Specified by:

rxWrite in interface WriteStream<K>

Parameters:

data - the data to write

Returns:

a future completed with the write result

end

public Completable end()

Ends the stream.

Once the stream has ended, it cannot be used any more.

Specified by:

end in interface WriteStream<K>

Returns:

a future completed with the result

rxEnd

public Completable rxEnd()

Ends the stream.

Once the stream has ended, it cannot be used any more.

Specified by:

rxEnd in interface WriteStream<K>

Returns:

a future completed with the result

end

public Completable end(KafkaProducerRecord<K,V> data)

Same as WriteStream.end() but writes some data to the stream before ending.

Specified by:

end in interface WriteStream<K>

Parameters:

data - the data to write

Returns:

a future completed with the result

rxEnd

public Completable rxEnd(KafkaProducerRecord<K,V> data)

Same as WriteStream.end() but writes some data to the stream before ending.

Specified by:

rxEnd in interface WriteStream<K>

Parameters:

data - the data to write

Returns:

a future completed with the result

writeQueueFull

public boolean writeQueueFull()

This will return true if there are more bytes in the write queue than the value set using setWriteQueueMaxSize(int)

Specified by:

writeQueueFull in interface WriteStream<K>

Returns:

true if write queue is full

createShared

public static <K,V> KafkaProducer<K,V> createShared(Vertx vertx,
 String name,
 Map<String,String> config)

Get or create a KafkaProducer instance which shares its stream with any other KafkaProducer created with the same name

When close has been called for each shared producer the resources will be released. Calling end closes all shared producers.

Parameters:

vertx - Vert.x instance to use

name - the producer name to identify it

config - Kafka producer configuration

Returns:

an instance of the KafkaProducer

createShared

public static <K,V> KafkaProducer<K,V> createShared(Vertx vertx,
 String name,
 KafkaClientOptions options)

Get or create a KafkaProducer instance which shares its stream with any other KafkaProducer created with the same name

When close has been called for each shared producer the resources will be released. Calling end closes all shared producers.

Parameters:

vertx - Vert.x instance to use

name - the producer name to identify it

options - Kafka producer options

Returns:

an instance of the KafkaProducer

createShared

public static <K,V> KafkaProducer<K,V> createShared(Vertx vertx,
 String name,
 Map<String,String> config,
 Class<K> keyType,
 Class<V> valueType)

Get or create a KafkaProducer instance which shares its stream with any other KafkaProducer created with the same name

When close has been called for each shared producer the resources will be released. Calling end closes all shared producers.

Parameters:

vertx - Vert.x instance to use

name - the producer name to identify it

config - Kafka producer configuration

keyType - class type for the key serialization

valueType - class type for the value serialization

Returns:

an instance of the KafkaProducer

createShared

public static <K,V> KafkaProducer<K,V> createShared(Vertx vertx,
 String name,
 KafkaClientOptions options,
 Class<K> keyType,
 Class<V> valueType)

Get or create a KafkaProducer instance which shares its stream with any other KafkaProducer created with the same name

When close has been called for each shared producer the resources will be released. Calling end closes all shared producers.

Parameters:

vertx - Vert.x instance to use

name - the producer name to identify it

options - Kafka producer options

keyType - class type for the key serialization

valueType - class type for the value serialization

Returns:

an instance of the KafkaProducer

create

public static <K,V> KafkaProducer<K,V> create(Vertx vertx,
 Map<String,String> config)

Create a new KafkaProducer instance

Parameters:

vertx - Vert.x instance to use

config - Kafka producer configuration

Returns:

an instance of the KafkaProducer

create

public static <K,V> KafkaProducer<K,V> create(Vertx vertx,
 Map<String,String> config,
 Class<K> keyType,
 Class<V> valueType)

Create a new KafkaProducer instance

Parameters:

vertx - Vert.x instance to use

config - Kafka producer configuration

keyType - class type for the key serialization

valueType - class type for the value serialization

Returns:

an instance of the KafkaProducer

initTransactions

public Completable initTransactions()

Initializes the underlying kafka transactional producer. See initTransactions() ()}

Returns:

a future notified with the result

rxInitTransactions

public Completable rxInitTransactions()

Initializes the underlying kafka transactional producer. See initTransactions() ()}

Returns:

a future notified with the result

beginTransaction

public Completable beginTransaction()

Starts a new kafka transaction. See beginTransaction()

Returns:

a future notified with the result

rxBeginTransaction

public Completable rxBeginTransaction()

Starts a new kafka transaction. See beginTransaction()

Returns:

a future notified with the result

commitTransaction

public Completable commitTransaction()

Commits the ongoing transaction. See commitTransaction()

Returns:

a future notified with the result

rxCommitTransaction

public Completable rxCommitTransaction()

Commits the ongoing transaction. See commitTransaction()

Returns:

a future notified with the result

abortTransaction

public Completable abortTransaction()

Aborts the ongoing transaction. See KafkaProducer

Returns:

a future notified with the result

rxAbortTransaction

public Completable rxAbortTransaction()

Aborts the ongoing transaction. See KafkaProducer

Returns:

a future notified with the result

exceptionHandler

public KafkaProducer<K,V> exceptionHandler(Handler<Throwable> handler)

Description copied from interface: WriteStream

Set an exception handler on the write stream.

Specified by:

exceptionHandler in interface StreamBase

Specified by:

exceptionHandler in interface WriteStream<K>

Parameters:

handler - the exception handler

Returns:

a reference to this, so the API can be used fluently

setWriteQueueMaxSize

public KafkaProducer<K,V> setWriteQueueMaxSize(int i)

Description copied from interface: WriteStream

Set the maximum size of the write queue to maxSize. You will still be able to write to the stream even if there is more than maxSize items in the write queue. This is used as an indicator by classes such as Pipe to provide flow control.

The value is defined by the implementation of the stream, e.g in bytes for a NetSocket, etc...

Specified by:

setWriteQueueMaxSize in interface WriteStream<K>

Parameters:

i - the max size of the write stream

Returns:

a reference to this, so the API can be used fluently

drainHandler

public KafkaProducer<K,V> drainHandler(Handler<Void> handler)

Description copied from interface: WriteStream

Set a drain handler on the stream. If the write queue is full, then the handler will be called when the write queue is ready to accept buffers again. See Pipe for an example of this being used.

The stream implementation defines when the drain handler, for example it could be when the queue size has been reduced to maxSize / 2.

Specified by:

drainHandler in interface WriteStream<K>

Parameters:

handler - the handler

Returns:

a reference to this, so the API can be used fluently

send

public Single<RecordMetadata> send(KafkaProducerRecord<K,V> record)

Asynchronously write a record to a topic

Parameters:

record - record to write

Returns:

a Future completed with the record metadata

rxSend

public Single<RecordMetadata> rxSend(KafkaProducerRecord<K,V> record)

Asynchronously write a record to a topic

Parameters:

record - record to write

Returns:

a Future completed with the record metadata

partitionsFor

public Single<List<PartitionInfo>> partitionsFor(String topic)

Get the partition metadata for the give topic.

Parameters:

topic - topic partition for which getting partitions info

Returns:

a future notified with the result

rxPartitionsFor

public Single<List<PartitionInfo>> rxPartitionsFor(String topic)

Get the partition metadata for the give topic.

Parameters:

topic - topic partition for which getting partitions info

Returns:

a future notified with the result

flush

public Completable flush()

Invoking this method makes all buffered records immediately available to write

Returns:

a future notified with the result

rxFlush

public Completable rxFlush()

Invoking this method makes all buffered records immediately available to write

Returns:

a future notified with the result

close

public Completable close()

Close the producer

Returns:

a Future completed with the operation result

rxClose

public Completable rxClose()

Close the producer

Returns:

a Future completed with the operation result

close

public Completable close(long timeout)

Close the producer

Parameters:

timeout -

Returns:

a future notified with the result

rxClose

public Completable rxClose(long timeout)

Close the producer

Parameters:

timeout -

Returns:

a future notified with the result

create

public static <K,V> KafkaProducer<K,V> create(Vertx vertx,
 org.apache.kafka.clients.producer.Producer<K,V> producer)

Create a new KafkaProducer instance from a native .

Parameters:

vertx - Vert.x instance to use

producer - the Kafka producer to wrap

Returns:

an instance of the KafkaProducer

create

public static <K,V> KafkaProducer<K,V> create(Vertx vertx,
 org.apache.kafka.clients.producer.Producer<K,V> producer,
 KafkaClientOptions options)

Create a new KafkaProducer instance from a native .

Parameters:

vertx - Vert.x instance to use

producer - the Kafka producer to wrap

options - options used only for tracing settings

Returns:

an instance of the KafkaProducer

newInstance

public static <K,V> KafkaProducer<K,V> newInstance(KafkaProducer arg)

newInstance

public static <K,V> KafkaProducer<K,V> newInstance(KafkaProducer arg,
 io.vertx.lang.rx.TypeArg<K> __typeArg_K,
 io.vertx.lang.rx.TypeArg<V> __typeArg_V)