com.amazonaws.retry

Interface RetryPolicy.BackoffStrategy

All Known Implementing Classes:

PredefinedBackoffStrategies.EqualJitterBackoffStrategy, PredefinedBackoffStrategies.ExponentialBackoffStrategy, PredefinedBackoffStrategies.FullJitterBackoffStrategy

Enclosing class:

RetryPolicy

public static interface RetryPolicy.BackoffStrategy

The hook for providing custom back-off strategy to control the sleep time between retries.

Field Summary

Fields

Modifier and Type	Field and Description
static RetryPolicy.BackoffStrategy	NO_DELAY

Method Summary

Modifier and Type	Method and Description
long	delayBeforeNextRetry(AmazonWebServiceRequest originalRequest, AmazonClientException exception, int retriesAttempted) Returns the delay (in milliseconds) before next retry attempt.

Field Detail

NO_DELAY

static final RetryPolicy.BackoffStrategy NO_DELAY

Method Detail

delayBeforeNextRetry

long delayBeforeNextRetry(AmazonWebServiceRequest originalRequest,
                          AmazonClientException exception,
                          int retriesAttempted)

Returns the delay (in milliseconds) before next retry attempt.

Parameters:

originalRequest - The original request object being executed. For performance reason, this object is not a defensive copy, and caller should not attempt to modify its data.

exception - The exception from the failed request, represented as an AmazonClientException object. There are two types of exception that will be passed to this method:

• AmazonServiceException (sub-class of AmazonClientException) indicating a service error
• AmazonClientException caused by an IOException when executing the HTTP request.

Any other exceptions are regarded as unexpected failures and are thrown immediately without any retry. For performance reason, this object is not a defensive copy, and caller should not attempt to modify its data.

retriesAttempted - The number of times the current request has been attempted (not including the next attempt after the delay).

Returns:

The delay (in milliseconds) before next retry attempt.