com.alibaba.csp.sentinel.slots.statistic

Class StatisticSlot

java.lang.Object

com.alibaba.csp.sentinel.slotchain.AbstractLinkedProcessorSlot<DefaultNode>

com.alibaba.csp.sentinel.slots.statistic.StatisticSlot

All Implemented Interfaces:

ProcessorSlot<DefaultNode>

@Spi(order=-7000)
public class StatisticSlot
extends AbstractLinkedProcessorSlot<DefaultNode>

A processor slot that dedicates to real time statistics. When entering this slot, we need to separately count the following information:

• ClusterNode: total statistics of a cluster node of the resource ID.
• Origin node: statistics of a cluster node from different callers/origins.
• DefaultNode: statistics for specific resource name in the specific context.
• Finally, the sum statistics of all entrances.

Author:

jialiang.linjl, Eric Zhao

Constructor Summary

Constructors

Constructor and Description
StatisticSlot()

Method Summary

Modifier and Type	Method and Description
void	entry(Context context, ResourceWrapper resourceWrapper, DefaultNode node, int count, boolean prioritized, Object... args) Entrance of this slot.
void	exit(Context context, ResourceWrapper resourceWrapper, int count, Object... args) Exit of this slot.

Methods inherited from class com.alibaba.csp.sentinel.slotchain.AbstractLinkedProcessorSlot

fireEntry, fireExit, getNext, setNext

Methods inherited from class java.lang.Object

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

Constructor Detail

StatisticSlot

public StatisticSlot()

Method Detail

entry

public void entry(Context context,
                  ResourceWrapper resourceWrapper,
                  DefaultNode node,
                  int count,
                  boolean prioritized,
                  Object... args)
           throws Throwable

Description copied from interface: ProcessorSlot

Entrance of this slot.

Parameters:

context - current Context

resourceWrapper - current resource

node - generics parameter, usually is a Node

count - tokens needed

prioritized - whether the entry is prioritized

args - parameters of the original call

Throws:

Throwable - blocked exception or unexpected error

exit

public void exit(Context context,
                 ResourceWrapper resourceWrapper,
                 int count,
                 Object... args)

Description copied from interface: ProcessorSlot

Exit of this slot.

Parameters:

context - current Context

resourceWrapper - current resource

count - tokens needed

args - parameters of the original call