com.weibo.api.motan.transport

类 DefaultProtectedStrategy

java.lang.Object

com.weibo.api.motan.transport.DefaultProtectedStrategy

所有已实现的接口:

ProviderProtectedStrategy, StatisticCallback

@SpiMeta(name="motan")
public class DefaultProtectedStrategy
extends Object
implements ProviderProtectedStrategy, StatisticCallback

TODO 可配置化策略

provider 消息处理分发：支持一定程度的自我防护

                1) 如果接口只有一个方法，那么直接return true
                2) 如果接口有多个方法，那么如果单个method超过 maxThread / 2 && totalCount >  (maxThread * 3 / 4)，那么return false;
                3) 如果接口有多个方法(4个)，同时总的请求数超过 maxThread * 3 / 4，同时该method的请求数超过 maxThead * 1 / 4， 那么return false
                4) 其他场景return true

 

版本:

创建时间：2013-6-7

作者:

maijunsheng

字段概要

字段

限定符和类型	字段和说明
protected AtomicInteger	methodCounter
protected AtomicInteger	rejectCounter
protected ConcurrentMap<String,AtomicInteger>	rejectCounters
protected ConcurrentMap<String,AtomicInteger>	requestCounters
protected AtomicInteger	totalCounter

构造器概要

构造器

构造器和说明
DefaultProtectedStrategy()

方法概要

限定符和类型	方法和说明
Response	call(Request request, Provider<?> provider)
boolean	isAllowRequest(int requestCounter, int totalCounter, int maxThread)
void	setMethodCounter(AtomicInteger methodCounter)
String	statisticCallback()

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

requestCounters

protected ConcurrentMap<String,AtomicInteger> requestCounters

rejectCounters

protected ConcurrentMap<String,AtomicInteger> rejectCounters

totalCounter

protected AtomicInteger totalCounter

rejectCounter

protected AtomicInteger rejectCounter

methodCounter

protected AtomicInteger methodCounter

构造器详细资料

DefaultProtectedStrategy

public DefaultProtectedStrategy()

方法详细资料

setMethodCounter

public void setMethodCounter(AtomicInteger methodCounter)

指定者:

setMethodCounter 在接口中 ProviderProtectedStrategy

call

public Response call(Request request,
                     Provider<?> provider)

指定者:

call 在接口中 ProviderProtectedStrategy

isAllowRequest

public boolean isAllowRequest(int requestCounter,
                              int totalCounter,
                              int maxThread)

statisticCallback

public String statisticCallback()

指定者:

statisticCallback 在接口中 StatisticCallback