org.apache.flink.streaming.connectors.pulsar

Class PulsarRowSerializationSchema

java.lang.Object

org.apache.flink.streaming.connectors.pulsar.PulsarRowSerializationSchema

All Implemented Interfaces:

Serializable, PulsarContextAware<org.apache.flink.types.Row>, PulsarSerializationSchema<org.apache.flink.types.Row>

public class PulsarRowSerializationSchema
extends Object
implements PulsarSerializationSchema<org.apache.flink.types.Row>, PulsarContextAware<org.apache.flink.types.Row>

a serializationSchema for row type in pulsar.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
byte[]	getKey(org.apache.flink.types.Row element)
org.apache.pulsar.client.api.Schema<?>	getPulsarSchema()
String	getTargetTopic(org.apache.flink.types.Row element) Returns the topic that the presented element should be sent to.
void	open(org.apache.flink.api.common.serialization.SerializationSchema.InitializationContext context) Initialization method for the schema.
byte[]	serialize(org.apache.flink.types.Row element) Serializes given element and returns it as a byte[].
void	serialize(org.apache.flink.types.Row consumedRow, org.apache.pulsar.client.api.TypedMessageBuilder<byte[]> messageBuilder)
void	setNumParallelInstances(int numParallelInstances) Sets the parallelism with which the parallel task of the Pulsar Sink runs.
void	setParallelInstanceId(int parallelInstanceId) Sets the number of the parallel subtask that the Kafka Producer is running on.
void	setPartitions(int[] partitions) Sets the available partitions for the topic returned from PulsarContextAware.getTargetTopic(Object).

Methods inherited from class java.lang.Object

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

Method Detail

open

public void open(org.apache.flink.api.common.serialization.SerializationSchema.InitializationContext context)
          throws Exception

Description copied from interface: PulsarSerializationSchema

Initialization method for the schema. It is called before the actual working methods PulsarSerializationSchema.serialize(Object) and thus suitable for one time setup work.

The provided SerializationSchema.InitializationContext can be used to access additional features such as e.g. registering user metrics.

Specified by:

open in interface PulsarSerializationSchema<org.apache.flink.types.Row>

Parameters:

context - Contextual information that can be used during initialization.

Throws:

Exception

serialize

public byte[] serialize(org.apache.flink.types.Row element)

Description copied from interface: PulsarSerializationSchema

Serializes given element and returns it as a byte[].

Specified by:

serialize in interface PulsarSerializationSchema<org.apache.flink.types.Row>

Parameters:

element - element to be serialized

Returns:

byte[] represents the serialized data

serialize

public void serialize(org.apache.flink.types.Row consumedRow,
                      org.apache.pulsar.client.api.TypedMessageBuilder<byte[]> messageBuilder)

Specified by:

serialize in interface PulsarSerializationSchema<org.apache.flink.types.Row>

getPulsarSchema

public org.apache.pulsar.client.api.Schema<?> getPulsarSchema()

Specified by:

getPulsarSchema in interface PulsarSerializationSchema<org.apache.flink.types.Row>

setParallelInstanceId

public void setParallelInstanceId(int parallelInstanceId)

Description copied from interface: PulsarContextAware

Sets the number of the parallel subtask that the Kafka Producer is running on. The numbering starts from 0 and goes up to parallelism-1 (parallelism as returned by PulsarContextAware.setNumParallelInstances(int)).

Specified by:

setParallelInstanceId in interface PulsarContextAware<org.apache.flink.types.Row>

setNumParallelInstances

public void setNumParallelInstances(int numParallelInstances)

Description copied from interface: PulsarContextAware

Sets the parallelism with which the parallel task of the Pulsar Sink runs.

Specified by:

setNumParallelInstances in interface PulsarContextAware<org.apache.flink.types.Row>

setPartitions

public void setPartitions(int[] partitions)

Description copied from interface: PulsarContextAware

Sets the available partitions for the topic returned from PulsarContextAware.getTargetTopic(Object).

Specified by:

setPartitions in interface PulsarContextAware<org.apache.flink.types.Row>

getTargetTopic

public String getTargetTopic(org.apache.flink.types.Row element)

Description copied from interface: PulsarContextAware

Returns the topic that the presented element should be sent to.

Specified by:

getTargetTopic in interface PulsarContextAware<org.apache.flink.types.Row>

getKey

public byte[] getKey(org.apache.flink.types.Row element)

Specified by:

getKey in interface PulsarContextAware<org.apache.flink.types.Row>