Package org.zalando.fahrschein

Interface PartitionManager

All Known Implementing Classes:

SimplePartitionManager

public interface PartitionManager

Method Summary

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

Method Details

lockPartitions

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

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.

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

void unlockPartitions(Lock lock)

Unlocks previously locked partitions.

Parameters:

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