com.alibaba.csp.sentinel.slots.block.degrade.circuitbreaker

Class AbstractCircuitBreaker

java.lang.Object

com.alibaba.csp.sentinel.slots.block.degrade.circuitbreaker.AbstractCircuitBreaker

All Implemented Interfaces:

CircuitBreaker

Direct Known Subclasses:

ExceptionCircuitBreaker, ResponseTimeCircuitBreaker

public abstract class AbstractCircuitBreaker
extends Object
implements CircuitBreaker

Since:

1.8.0

Author:

Eric Zhao

Nested Class Summary

Nested classes/interfaces inherited from interface com.alibaba.csp.sentinel.slots.block.degrade.circuitbreaker.CircuitBreaker

CircuitBreaker.State

Field Summary

Fields

Modifier and Type	Field and Description
protected AtomicReference<CircuitBreaker.State>	currentState
protected long	nextRetryTimestamp
protected int	recoveryTimeoutMs
protected DegradeRule	rule

Constructor Summary

Constructors

Constructor and Description
AbstractCircuitBreaker(DegradeRule rule)

Method Summary

Modifier and Type	Method and Description
CircuitBreaker.State	currentState() Get current state of the circuit breaker.
protected boolean	fromCloseToOpen(double snapshotValue)
protected boolean	fromHalfOpenToClose()
protected boolean	fromHalfOpenToOpen(double snapshotValue)
protected boolean	fromOpenToHalfOpen(Context context)
DegradeRule	getRule() Get the associated circuit breaking rule.
protected boolean	retryTimeoutArrived()
protected void	transformToOpen(double triggerValue)
boolean	tryPass(Context context) Acquires permission of an invocation only if it is available at the time of invoking.
protected void	updateNextRetryTimestamp()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.alibaba.csp.sentinel.slots.block.degrade.circuitbreaker.CircuitBreaker

onRequestComplete

Field Detail

rule

protected final DegradeRule rule

recoveryTimeoutMs

protected final int recoveryTimeoutMs

currentState

protected final AtomicReference<CircuitBreaker.State> currentState

nextRetryTimestamp

protected volatile long nextRetryTimestamp

Constructor Detail

AbstractCircuitBreaker

public AbstractCircuitBreaker(DegradeRule rule)

Method Detail

getRule

public DegradeRule getRule()

Description copied from interface: CircuitBreaker

Get the associated circuit breaking rule.

Specified by:

getRule in interface CircuitBreaker

Returns:

associated circuit breaking rule

currentState

public CircuitBreaker.State currentState()

Description copied from interface: CircuitBreaker

Get current state of the circuit breaker.

Specified by:

currentState in interface CircuitBreaker

Returns:

current state of the circuit breaker

tryPass

public boolean tryPass(Context context)

Description copied from interface: CircuitBreaker

Acquires permission of an invocation only if it is available at the time of invoking.

Specified by:

tryPass in interface CircuitBreaker

Parameters:

context - context of current invocation

Returns:

true if permission was acquired and false otherwise

retryTimeoutArrived

protected boolean retryTimeoutArrived()

updateNextRetryTimestamp

protected void updateNextRetryTimestamp()

fromCloseToOpen

protected boolean fromCloseToOpen(double snapshotValue)

fromOpenToHalfOpen

protected boolean fromOpenToHalfOpen(Context context)

fromHalfOpenToOpen

protected boolean fromHalfOpenToOpen(double snapshotValue)

fromHalfOpenToClose

protected boolean fromHalfOpenToClose()

transformToOpen

protected void transformToOpen(double triggerValue)