程序包 com.alibaba.nacos.common.utils

类 TopnCounterMetricsContainer

java.lang.Object

com.alibaba.nacos.common.utils.TopnCounterMetricsContainer

public class TopnCounterMetricsContainer
extends java.lang.Object

container for top n counter metrics, increment and remove cost O(1) time.

作者:

liuyixiao

嵌套类概要

嵌套类

修饰符和类型	类	说明
private class	TopnCounterMetricsContainer.DoublyLinkedNode

字段概要

字段

修饰符和类型	字段	说明
private java.util.concurrent.ConcurrentHashMap<java.lang.String,java.util.concurrent.atomic.AtomicInteger>	dataCount	dataId -> count.
private TopnCounterMetricsContainer.DoublyLinkedNode	dummyHead
private java.util.concurrent.ConcurrentHashMap<java.lang.Integer,TopnCounterMetricsContainer.DoublyLinkedNode>	specifiedCountDataIdSets	count -> node.

构造器概要

构造器

构造器	说明
TopnCounterMetricsContainer()

方法概要

修饰符和类型	方法	说明
int	get(java.lang.String dataId)	get data count by dataId.
java.util.List<Pair<java.lang.String,java.util.concurrent.atomic.AtomicInteger>>	getTopNCounter(int n)
void	increment(java.lang.String dataId)	increment the count of dataId.
private void	insertIntoSpecifiedCountDataIdSets(java.lang.String dataId, int count)
private void	insertIntoSpecifiedCountDataIdSets(java.lang.String dataId, TopnCounterMetricsContainer.DoublyLinkedNode targetSet)
private boolean	isDummyHead(TopnCounterMetricsContainer.DoublyLinkedNode node)
void	put(java.lang.String dataId)	put(String dataId, 0).
void	put(java.lang.String dataId, int count)	put new data into container, if already exist, update it.
java.util.concurrent.atomic.AtomicInteger	remove(java.lang.String dataId)	remove data.
void	removeAll()	remove all data.
private TopnCounterMetricsContainer.DoublyLinkedNode	removeFromSpecifiedCountDataIdSets(java.lang.String dataId)

从类继承的方法 java.lang.Object

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

字段详细资料

dataCount

private java.util.concurrent.ConcurrentHashMap<java.lang.String,java.util.concurrent.atomic.AtomicInteger> dataCount

dataId -> count.

specifiedCountDataIdSets

private java.util.concurrent.ConcurrentHashMap<java.lang.Integer,TopnCounterMetricsContainer.DoublyLinkedNode> specifiedCountDataIdSets

count -> node.

dummyHead

private TopnCounterMetricsContainer.DoublyLinkedNode dummyHead

构造器详细资料

TopnCounterMetricsContainer

public TopnCounterMetricsContainer()

方法详细资料

getTopNCounter

public java.util.List<Pair<java.lang.String,java.util.concurrent.atomic.AtomicInteger>> getTopNCounter(int n)

put

public void put(java.lang.String dataId)

put(String dataId, 0).

参数:

dataId - data name or data key.

put

public void put(java.lang.String dataId,
                int count)

put new data into container, if already exist, update it. this method could be slow (O(N)), most time use increment.

参数:

dataId - data name or data key.

count - data count.

get

public int get(java.lang.String dataId)

get data count by dataId.

参数:

dataId - data name or data key.

返回:

data count or -1 if not exist.

increment

public void increment(java.lang.String dataId)

increment the count of dataId.

参数:

dataId - data name or data key.

remove

public java.util.concurrent.atomic.AtomicInteger remove(java.lang.String dataId)

remove data.

参数:

dataId - data name or data key.

返回:

data count or null if data is not exist.

removeAll

public void removeAll()

remove all data.

removeFromSpecifiedCountDataIdSets

private TopnCounterMetricsContainer.DoublyLinkedNode removeFromSpecifiedCountDataIdSets(java.lang.String dataId)

insertIntoSpecifiedCountDataIdSets

private void insertIntoSpecifiedCountDataIdSets(java.lang.String dataId,
                                                int count)

insertIntoSpecifiedCountDataIdSets

private void insertIntoSpecifiedCountDataIdSets(java.lang.String dataId,
                                                TopnCounterMetricsContainer.DoublyLinkedNode targetSet)

isDummyHead

private boolean isDummyHead(TopnCounterMetricsContainer.DoublyLinkedNode node)