org.zalando.fahrschein

Class PersistentPartitionManager

java.lang.Object

org.zalando.fahrschein.PersistentPartitionManager

All Implemented Interfaces:

PartitionManager

public class PersistentPartitionManager
extends Object
implements PartitionManager

Constructor Summary

Constructors

Constructor and Description
PersistentPartitionManager(DataSource dataSource)
PersistentPartitionManager(org.springframework.jdbc.core.JdbcTemplate template)

Method Summary

Modifier and Type	Method and Description
boolean	lockPartition(String consumerName, String eventName, String partition, String lockedBy, long timeout, TimeUnit timeoutUnit)
void	unlockPartition(String consumerName, String eventName, String partition, String lockedBy)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.zalando.fahrschein.PartitionManager

lockPartitions

Constructor Detail

PersistentPartitionManager

public PersistentPartitionManager(DataSource dataSource)
                           throws IOException

Throws:

IOException

PersistentPartitionManager

public PersistentPartitionManager(org.springframework.jdbc.core.JdbcTemplate template)
                           throws IOException

Throws:

IOException

Method Detail

lockPartition

public boolean lockPartition(String consumerName,
                             String eventName,
                             String partition,
                             String lockedBy,
                             long timeout,
                             TimeUnit timeoutUnit)

Specified by:

lockPartition in interface PartitionManager

Parameters:

consumerName - Name of the consuming application which might be running on multiple nodes

eventName - Name of the event

partition - The partition to lock

lockedBy - Name of one node of the consuming application

timeout - Timeout after that the lock will automatically be released

timeoutUnit - Time unit for the timeout

Returns:

Whether locking succeeded, i.e. the lock was not held by anyone or the existing lock expired. The current implementations will also return true if the lock is already held by the same node, but not update the expiry time.

unlockPartition

public void unlockPartition(String consumerName,
                            String eventName,
                            String partition,
                            String lockedBy)

Specified by:

unlockPartition in interface PartitionManager

Parameters:

consumerName - Name of the consuming application which might be running on multiple nodes

eventName - Name of the event

partition - The partition to lock

lockedBy - Name of one node of the consuming application