com.taosdata.jdbc.ws.tmq

Class WSConsumer<V>

java.lang.Object

com.taosdata.jdbc.ws.tmq.WSConsumer<V>

All Implemented Interfaces:

Consumer<V>

public class WSConsumer<V>
extends Object
implements Consumer<V>

Constructor Summary

Constructors

Constructor and Description
WSConsumer()

Method Summary

Modifier and Type	Method and Description
Set<TopicPartition>	assignment() Get the set of partitions currently assigned to this consumer.
Map<TopicPartition,Long>	beginningOffsets(String topic)
void	close() close consumer
void	commitAsync(Map<TopicPartition,OffsetAndMetadata> offsets, OffsetCommitCallback<V> callback)
void	commitAsync(OffsetCommitCallback<V> callback)
void	commitSync() commit offset with sync
void	commitSync(Map<TopicPartition,OffsetAndMetadata> offsets)
Map<TopicPartition,OffsetAndMetadata>	committed(Set<TopicPartition> partitions)
OffsetAndMetadata	committed(TopicPartition partition) Get the last committed offset for the given partition.
void	create(Properties properties) create consumer
Map<TopicPartition,Long>	endOffsets(String topic)
ConsumerRecords<V>	poll(Duration timeout, Deserializer<V> deserializer) get result records
Map<TopicPartition,Long>	position(String topic)
long	position(TopicPartition partition) Get the offset of the next record that will be fetched.
void	seek(TopicPartition partition, long offset) If this API is invoked for the same partition more than once, the latest offset will be used on the next poll().
void	seekToBeginning(Collection<TopicPartition> partitions)
void	seekToEnd(Collection<TopicPartition> partitions)
void	subscribe(Collection<String> topics) subscribe topics
Set<String>	subscription() get subscribe topics
void	unsubscribe() unsubscribe topics

Methods inherited from class java.lang.Object

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

Constructor Detail

WSConsumer

public WSConsumer()

Method Detail

create

public void create(Properties properties)
            throws SQLException

Description copied from interface: Consumer

create consumer

Specified by:

create in interface Consumer<V>

Parameters:

properties - ip / port / user / password and so on.

Throws:

SQLException - jni exception

subscribe

public void subscribe(Collection<String> topics)
               throws SQLException

Description copied from interface: Consumer

subscribe topics

Specified by:

subscribe in interface Consumer<V>

Parameters:

topics - collection of topics

Throws:

SQLException

unsubscribe

public void unsubscribe()
                 throws SQLException

Description copied from interface: Consumer

unsubscribe topics

Specified by:

unsubscribe in interface Consumer<V>

Throws:

SQLException

subscription

public Set<String> subscription()
                         throws SQLException

Description copied from interface: Consumer

get subscribe topics

Specified by:

subscription in interface Consumer<V>

Returns:

topic set

Throws:

SQLException

poll

public ConsumerRecords<V> poll(Duration timeout,
                               Deserializer<V> deserializer)
                        throws SQLException

Description copied from interface: Consumer

get result records

Specified by:

poll in interface Consumer<V>

Parameters:

timeout - wait time for poll data

deserializer - convert resultSet to javaBean

Returns:

ConsumerRecord is the collection of javaBean

Throws:

SQLException - java reflect exception or resultSet convert exception

commitSync

public void commitSync()
                throws SQLException

Description copied from interface: Consumer

commit offset with sync

Specified by:

commitSync in interface Consumer<V>

Throws:

SQLException

close

public void close()
           throws SQLException

Description copied from interface: Consumer

close consumer

Specified by:

close in interface Consumer<V>

Throws:

SQLException

commitAsync

public void commitAsync(OffsetCommitCallback<V> callback)

Specified by:

commitAsync in interface Consumer<V>

seek

public void seek(TopicPartition partition,
                 long offset)
          throws SQLException

Description copied from interface: Consumer

If this API is invoked for the same partition more than once, the latest offset will be used on the next poll().

Specified by:

seek in interface Consumer<V>

Throws:

SQLException

position

public long position(TopicPartition partition)
              throws SQLException

Description copied from interface: Consumer

Get the offset of the next record that will be fetched.

Specified by:

position in interface Consumer<V>

Throws:

SQLException

position

public Map<TopicPartition,Long> position(String topic)
                                  throws SQLException

Specified by:

position in interface Consumer<V>

Throws:

SQLException

beginningOffsets

public Map<TopicPartition,Long> beginningOffsets(String topic)
                                          throws SQLException

Specified by:

beginningOffsets in interface Consumer<V>

Throws:

SQLException

endOffsets

public Map<TopicPartition,Long> endOffsets(String topic)
                                    throws SQLException

Specified by:

endOffsets in interface Consumer<V>

Throws:

SQLException

seekToBeginning

public void seekToBeginning(Collection<TopicPartition> partitions)
                     throws SQLException

Specified by:

seekToBeginning in interface Consumer<V>

Throws:

SQLException

seekToEnd

public void seekToEnd(Collection<TopicPartition> partitions)
               throws SQLException

Specified by:

seekToEnd in interface Consumer<V>

Throws:

SQLException

assignment

public Set<TopicPartition> assignment()
                               throws SQLException

Description copied from interface: Consumer

Get the set of partitions currently assigned to this consumer.

Specified by:

assignment in interface Consumer<V>

Throws:

SQLException

committed

public OffsetAndMetadata committed(TopicPartition partition)
                            throws SQLException

Description copied from interface: Consumer

Get the last committed offset for the given partition. This offset will be used as the position for the consumer in the event of a failure.

Specified by:

committed in interface Consumer<V>

Throws:

SQLException

committed

public Map<TopicPartition,OffsetAndMetadata> committed(Set<TopicPartition> partitions)
                                                throws SQLException

Specified by:

committed in interface Consumer<V>

Throws:

SQLException

commitSync

public void commitSync(Map<TopicPartition,OffsetAndMetadata> offsets)
                throws SQLException

Specified by:

commitSync in interface Consumer<V>

Throws:

SQLException

commitAsync

public void commitAsync(Map<TopicPartition,OffsetAndMetadata> offsets,
                        OffsetCommitCallback<V> callback)

Specified by:

commitAsync in interface Consumer<V>