com.amazonaws.services.simpleworkflow.flow.interceptors

Class ExponentialRetryPolicy

java.lang.Object

com.amazonaws.services.simpleworkflow.flow.interceptors.RetryPolicyBase

com.amazonaws.services.simpleworkflow.flow.interceptors.ExponentialRetryPolicy

All Implemented Interfaces:

RetryPolicy

public class ExponentialRetryPolicy
extends RetryPolicyBase

Constructor Summary

Constructors

Constructor and Description
ExponentialRetryPolicy(long initialRetryIntervalSeconds)

Method Summary

Modifier and Type	Method and Description
double	getBackoffCoefficient()
long	getInitialRetryIntervalSeconds()
int	getMaximumAttempts()
long	getMaximumRetryIntervalSeconds()
long	getRetryExpirationIntervalSeconds()
long	nextRetryDelaySeconds(Date firstAttempt, Date recordedFailure, int numberOfTries)
void	setBackoffCoefficient(double backoffCoefficient) Coefficient used to calculate the next retry interval.
void	setMaximumAttempts(int maximumAttempts) Maximum number of attempts.
void	setMaximumRetryIntervalSeconds(long maximumRetryIntervalSeconds) Set the upper limit of retry interval.
void	setRetryExpirationIntervalSeconds(long retryExpirationIntervalSeconds) Stop retrying after the specified interval.
void	validate() Performs the following three validation checks for ExponentialRetry Policy: 1) initialRetryIntervalSeconds is not greater than maximumRetryIntervalSeconds 2) initialRetryIntervalSeconds is not greater than retryExpirationIntervalSeconds
ExponentialRetryPolicy	withBackoffCoefficient(double backoffCoefficient)
ExponentialRetryPolicy	withExceptionsToExclude(Collection<Class<? extends Throwable>> exceptionsToRetry) The exception types that should not be retried.
ExponentialRetryPolicy	withExceptionsToRetry(Collection<Class<? extends Throwable>> exceptionsToRetry) The exception types that cause operation being retried.
ExponentialRetryPolicy	withMaximumAttempts(int maximumAttempts)
ExponentialRetryPolicy	withMaximumRetryIntervalSeconds(long maximumRetryIntervalSeconds)
ExponentialRetryPolicy	withRetryExpirationIntervalSeconds(long retryExpirationIntervalSeconds)

Methods inherited from class com.amazonaws.services.simpleworkflow.flow.interceptors.RetryPolicyBase

getExceptionsToExclude, getExceptionsToRetry, isRetryable, setExceptionsToExclude, setExceptionsToRetry

Methods inherited from class java.lang.Object

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

Constructor Detail

ExponentialRetryPolicy

public ExponentialRetryPolicy(long initialRetryIntervalSeconds)

Method Detail

getInitialRetryIntervalSeconds

public long getInitialRetryIntervalSeconds()

getMaximumRetryIntervalSeconds

public long getMaximumRetryIntervalSeconds()

setMaximumRetryIntervalSeconds

public void setMaximumRetryIntervalSeconds(long maximumRetryIntervalSeconds)

Set the upper limit of retry interval. No limit by default.

withMaximumRetryIntervalSeconds

public ExponentialRetryPolicy withMaximumRetryIntervalSeconds(long maximumRetryIntervalSeconds)

getRetryExpirationIntervalSeconds

public long getRetryExpirationIntervalSeconds()

setRetryExpirationIntervalSeconds

public void setRetryExpirationIntervalSeconds(long retryExpirationIntervalSeconds)

Stop retrying after the specified interval.

withRetryExpirationIntervalSeconds

public ExponentialRetryPolicy withRetryExpirationIntervalSeconds(long retryExpirationIntervalSeconds)

getBackoffCoefficient

public double getBackoffCoefficient()

setBackoffCoefficient

public void setBackoffCoefficient(double backoffCoefficient)

Coefficient used to calculate the next retry interval. The following formula is used: initialRetryIntervalSeconds * Math.pow(backoffCoefficient, numberOfTries - 2)

withBackoffCoefficient

public ExponentialRetryPolicy withBackoffCoefficient(double backoffCoefficient)

getMaximumAttempts

public int getMaximumAttempts()

setMaximumAttempts

public void setMaximumAttempts(int maximumAttempts)

Maximum number of attempts. The first retry is second attempt.

withMaximumAttempts

public ExponentialRetryPolicy withMaximumAttempts(int maximumAttempts)

withExceptionsToRetry

public ExponentialRetryPolicy withExceptionsToRetry(Collection<Class<? extends Throwable>> exceptionsToRetry)

The exception types that cause operation being retried. Subclasses of the specified types are also included. Default is Throwable.class which means retry any exceptions.

Overrides:

withExceptionsToRetry in class RetryPolicyBase

withExceptionsToExclude

public ExponentialRetryPolicy withExceptionsToExclude(Collection<Class<? extends Throwable>> exceptionsToRetry)

The exception types that should not be retried. Subclasses of the specified types are also not retried. Default is empty list.

Overrides:

withExceptionsToExclude in class RetryPolicyBase

nextRetryDelaySeconds

public long nextRetryDelaySeconds(Date firstAttempt,
                                  Date recordedFailure,
                                  int numberOfTries)

Returns:

Time to the next retry. FlowConstants.NONE means stop retrying.

validate

public void validate()
              throws IllegalStateException

Performs the following three validation checks for ExponentialRetry Policy: 1) initialRetryIntervalSeconds is not greater than maximumRetryIntervalSeconds 2) initialRetryIntervalSeconds is not greater than retryExpirationIntervalSeconds

Throws:

IllegalStateException