org.apache.kafka.tools.api

Interface RecordReader

All Superinterfaces:

AutoCloseable, Closeable, org.apache.kafka.common.Configurable

public interface RecordReader
extends Closeable, org.apache.kafka.common.Configurable

Typical implementations of this interface convert data from an `InputStream` received via `readRecords` into a iterator of `ProducerRecord` instance. Note that implementations must have a public nullary constructor. This is used by the `kafka.tools.ConsoleProducer`.

Method Summary

Modifier and Type	Method and Description
default void	close() Closes this reader.
default void	configure(Map<String,?> configs)
Iterator<org.apache.kafka.clients.producer.ProducerRecord<byte[],byte[]>>	readRecords(InputStream inputStream) read byte array from input stream and then generate an iterator of producer record

Method Detail

configure

default void configure(Map<String,?> configs)

Specified by:

configure in interface org.apache.kafka.common.Configurable

readRecords

Iterator<org.apache.kafka.clients.producer.ProducerRecord<byte[],byte[]>> readRecords(InputStream inputStream)

read byte array from input stream and then generate an iterator of producer record

Parameters:

inputStream - InputStream of messages. the implementation does not need to close the input stream.

Returns:

an iterator of producer record. It should implement following rules. 1) the hasNext() method must be idempotent. 2) the convert error should be thrown by next() method.

close

default void close()

Closes this reader. This method is invoked if the iterator from readRecords either has no more records or throws exception.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable