com.alibaba.rocketmq.client.consumer.store

接口 OffsetStore

所有已知实现类:

LocalFileOffsetStore, RemoteBrokerOffsetStore

public interface OffsetStore

Offset store interface

作者:

shijia.wxr

方法概要

方法

限定符和类型	方法和说明
Map<MessageQueue,Long>	cloneOffsetTable(String topic)
void	load() Load
void	persist(MessageQueue mq) Persist the offset,may be in local storage or remote name server
void	persistAll(Set<MessageQueue> mqs) Persist all offsets,may be in local storage or remote name server
long	readOffset(MessageQueue mq, ReadOffsetType type) Get offset from local storage
void	removeOffset(MessageQueue mq) Remove offset
void	updateOffset(MessageQueue mq, long offset, boolean increaseOnly) Update the offset,store it in memory

方法详细资料

load

void load()
          throws MQClientException

Load

抛出:

MQClientException

updateOffset

void updateOffset(MessageQueue mq,
                long offset,
                boolean increaseOnly)

Update the offset,store it in memory

参数:

mq -

offset -

increaseOnly -

readOffset

long readOffset(MessageQueue mq,
              ReadOffsetType type)

Get offset from local storage

参数:

mq -

type -

返回:

persistAll

void persistAll(Set<MessageQueue> mqs)

Persist all offsets,may be in local storage or remote name server

参数:

mqs -

persist

void persist(MessageQueue mq)

Persist the offset,may be in local storage or remote name server

参数:

mq -

removeOffset

void removeOffset(MessageQueue mq)

Remove offset

参数:

mq -

cloneOffsetTable

Map<MessageQueue,Long> cloneOffsetTable(String topic)

参数:

topic -

返回: