com.alibaba.csp.sentinel.cluster.flow.statistic.concurrent

Class CurrentConcurrencyManager

java.lang.Object

com.alibaba.csp.sentinel.cluster.flow.statistic.concurrent.CurrentConcurrencyManager

public final class CurrentConcurrencyManager
extends Object

We use a ConcurrentHashMap type structure to store nowCalls corresponding to rules, where the key is flowId and the value is nowCalls. Because nowCalls may be accessed and modified by multiple threads, we consider to design it as an AtomicInteger class . Each newly created rule will add a nowCalls object to this map. If the concurrency corresponding to a rule changes, we will update the corresponding nowCalls in real time. Each request to obtain a token will increase the nowCalls; and the request to release the token will reduce the nowCalls.

Author:

yunfeiyanggzq

Constructor Summary

Constructors

Constructor and Description
CurrentConcurrencyManager()

Method Summary

Modifier and Type	Method and Description
static void	addConcurrency(Long flowId, Integer acquireCount) add current concurrency.
static boolean	containsFlowId(Long flowId) check flow id.
static AtomicInteger	get(Long flowId) get the current concurrency.
static Set<Long>	getConcurrencyMapKeySet() get NOW_CALLS_MAP.
static void	put(Long flowId, Integer nowCalls) put the current concurrency.
static void	remove(Long flowId) delete the current concurrency.

Methods inherited from class java.lang.Object

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

Constructor Detail

CurrentConcurrencyManager

public CurrentConcurrencyManager()

Method Detail

addConcurrency

public static void addConcurrency(Long flowId,
                                  Integer acquireCount)

add current concurrency.

get

public static AtomicInteger get(Long flowId)

get the current concurrency.

remove

public static void remove(Long flowId)

delete the current concurrency.

put

public static void put(Long flowId,
                       Integer nowCalls)

put the current concurrency.

containsFlowId

public static boolean containsFlowId(Long flowId)

check flow id.

getConcurrencyMapKeySet

public static Set<Long> getConcurrencyMapKeySet()

get NOW_CALLS_MAP.