org.zalando.fahrschein.jdbc

Class JdbcPartitionManager

java.lang.Object

org.zalando.fahrschein.jdbc.JdbcPartitionManager

All Implemented Interfaces:

PartitionManager

public class JdbcPartitionManager
extends Object
implements PartitionManager

Constructor Summary

Constructors

Constructor and Description
JdbcPartitionManager(DataSource dataSource, String consumerName)
JdbcPartitionManager(DataSource dataSource, String consumerName, String schema)
JdbcPartitionManager(org.springframework.jdbc.core.JdbcTemplate template, String consumerName)
JdbcPartitionManager(org.springframework.jdbc.core.JdbcTemplate template, String consumerName, String schema)

Method Summary

Modifier and Type	Method and Description
Optional<Lock>	lockPartitions(String eventName, List<Partition> partitions, String lockedBy) Locks partitions for one event.
void	unlockPartitions(Lock lock) Unlocks previously locked partitions.

Methods inherited from class java.lang.Object

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

Constructor Detail

JdbcPartitionManager

public JdbcPartitionManager(org.springframework.jdbc.core.JdbcTemplate template,
                            String consumerName,
                            String schema)

JdbcPartitionManager

public JdbcPartitionManager(org.springframework.jdbc.core.JdbcTemplate template,
                            String consumerName)

JdbcPartitionManager

public JdbcPartitionManager(DataSource dataSource,
                            String consumerName,
                            String schema)

JdbcPartitionManager

public JdbcPartitionManager(DataSource dataSource,
                            String consumerName)

Method Detail

lockPartitions

@Transactional
public Optional<Lock> lockPartitions(String eventName,
                                                    List<Partition> partitions,
                                                    String lockedBy)

Description copied from interface: PartitionManager

Locks partitions for one event. When running consumers on multiple nodes they should try to lock partitions so that events are only processed by one consumer.

Specified by:

lockPartitions in interface PartitionManager

Parameters:

eventName - Name of the event

partitions - The partitions to lock

lockedBy - Name of one node of the consuming application

Returns:

A Lock instance containing the list of locked partitions if locking succeeded, Optional.empty() otherwise

unlockPartitions

@Transactional
public void unlockPartitions(Lock lock)

Description copied from interface: PartitionManager

Unlocks previously locked partitions.

Specified by:

unlockPartitions in interface PartitionManager

Parameters:

lock - The lock object returned from PartitionManager.lockPartitions(String, List, String)