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public class ExponentialRetryAlgorithm implements TimedRetryAlgorithmWithContext
The timed retry algorithm which uses jittered exponential backoff factor for calculating the next attempt execution time.
This class is thread-safe.
Implements
TimedRetryAlgorithmWithContextConstructors
ExponentialRetryAlgorithm(RetrySettings globalSettings, ApiClock clock)
public ExponentialRetryAlgorithm(RetrySettings globalSettings, ApiClock clock)
Creates a new exponential retry algorithm instance.
Parameters | |
---|---|
Name | Description |
globalSettings | RetrySettings global retry settings (attempt independent) |
clock | ApiClock clock to use for time-specific calculations |
Methods
createFirstAttempt()
public TimedAttemptSettings createFirstAttempt()
Creates a first attempt TimedAttemptSettings. The first attempt is configured to be executed immediately.
Returns | |
---|---|
Type | Description |
TimedAttemptSettings | first attempt settings |
createFirstAttempt(RetryingContext context)
public TimedAttemptSettings createFirstAttempt(RetryingContext context)
Creates a first attempt TimedAttemptSettings. The first attempt is configured to be executed immediately.
Parameter | |
---|---|
Name | Description |
context | RetryingContext a RetryingContext that can contain custom RetrySettings and retryable codes |
Returns | |
---|---|
Type | Description |
TimedAttemptSettings | first attempt settings |
createNextAttempt(RetryingContext context, TimedAttemptSettings previousSettings)
public TimedAttemptSettings createNextAttempt(RetryingContext context, TimedAttemptSettings previousSettings)
Creates a next attempt TimedAttemptSettings. The implementation increments the current attempt count and uses randomized exponential backoff factor for calculating next attempt execution time.
Parameters | |
---|---|
Name | Description |
context | RetryingContext a RetryingContext that can contain custom RetrySettings and retryable codes |
previousSettings | TimedAttemptSettings previous attempt settings |
Returns | |
---|---|
Type | Description |
TimedAttemptSettings | next attempt settings |
createNextAttempt(TimedAttemptSettings previousSettings)
public TimedAttemptSettings createNextAttempt(TimedAttemptSettings previousSettings)
Creates a next attempt TimedAttemptSettings. The implementation increments the current attempt count and uses randomized exponential backoff factor for calculating next attempt execution time.
Parameter | |
---|---|
Name | Description |
previousSettings | TimedAttemptSettings previous attempt settings |
Returns | |
---|---|
Type | Description |
TimedAttemptSettings | next attempt settings |
nextRandomLong(long bound)
protected long nextRandomLong(long bound)
Parameter | |
---|---|
Name | Description |
bound | long |
Returns | |
---|---|
Type | Description |
long |
shouldRetry(RetryingContext context, TimedAttemptSettings nextAttemptSettings)
public boolean shouldRetry(RetryingContext context, TimedAttemptSettings nextAttemptSettings)
Returns true
if another attempt should be made, or false
otherwise.
Parameters | |
---|---|
Name | Description |
context | RetryingContext a RetryingContext that can contain custom RetrySettings and retryable codes. Ignored by this implementation. |
nextAttemptSettings | TimedAttemptSettings attempt settings, which will be used for the next attempt, if accepted |
Returns | |
---|---|
Type | Description |
boolean |
|
shouldRetry(TimedAttemptSettings nextAttemptSettings)
public boolean shouldRetry(TimedAttemptSettings nextAttemptSettings)
Returns true
if another attempt should be made, or false
otherwise.
Parameter | |
---|---|
Name | Description |
nextAttemptSettings | TimedAttemptSettings attempt settings, which will be used for the next attempt, if accepted |
Returns | |
---|---|
Type | Description |
boolean |
|