Class RetryAlgorithm<ResponseT> (2.17.0)

public class RetryAlgorithm<ResponseT>

The retry algorithm, which makes decision based either on the thrown exception or the returned response, and the execution time settings of the previous attempt.

This class is thread-safe.

Inheritance

java.lang.Object > RetryAlgorithm<ResponseT>

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Type Parameter

Name	Description
ResponseT

Constructors

RetryAlgorithm(ResultRetryAlgorithm<ResponseT> resultAlgorithm, TimedRetryAlgorithm timedAlgorithm) (deprecated)

public RetryAlgorithm(ResultRetryAlgorithm<ResponseT> resultAlgorithm, TimedRetryAlgorithm timedAlgorithm)

Deprecated. use RetryAlgorithm#RetryAlgorithm(ResultRetryAlgorithmWithContext, TimedRetryAlgorithmWithContext) instead

Creates a new retry algorithm instance, which uses thrown exception or returned response and timed algorithms to make a decision. The result algorithm has higher priority than the timed algorithm.

Instances that are created using this constructor will ignore the RetryingContext that is passed in to the retrying methods. Use <xref uid="com.google.api.gax.retrying.RetryAlgorithm.RetryAlgorithm(com.google.api.gax.retrying.ResultRetryAlgorithmWithContext<ResponseT>,com.google.api.gax.retrying.TimedRetryAlgorithmWithContext)" data-throw-if-not-resolved="false">#RetryAlgorithm(ResultRetryAlgorithmWithContext, TimedRetryAlgorithmWithContext) to create an instance that will respect the RetryingContext.

Parameters

Name	Description
resultAlgorithm	`ResultRetryAlgorithm<ResponseT>` result algorithm to use
timedAlgorithm	`TimedRetryAlgorithm` timed algorithm to use

RetryAlgorithm(ResultRetryAlgorithmWithContext<ResponseT> resultAlgorithm, TimedRetryAlgorithmWithContext timedAlgorithm)

public RetryAlgorithm(ResultRetryAlgorithmWithContext<ResponseT> resultAlgorithm, TimedRetryAlgorithmWithContext timedAlgorithm)

Creates a new retry algorithm instance, which uses thrown exception or returned response and timed algorithms to make a decision. The result algorithm has higher priority than the timed algorithm.

Parameters

Name	Description
resultAlgorithm	`ResultRetryAlgorithmWithContext<ResponseT>` result algorithm to use
timedAlgorithm	`TimedRetryAlgorithmWithContext` timed algorithm to use

Methods

createFirstAttempt() (deprecated)

public TimedAttemptSettings createFirstAttempt()

Deprecated. use #createFirstAttempt(RetryingContext) instead

Creates a first attempt TimedAttemptSettings.

Returns

Type	Description
TimedAttemptSettings	first attempt settings

createFirstAttempt(RetryingContext context)

public TimedAttemptSettings createFirstAttempt(RetryingContext context)

Creates a first attempt TimedAttemptSettings.

Parameter

Name	Description
context	`RetryingContext` the RetryingContext that can be used to get the initial RetrySettings

Returns

Type	Description
TimedAttemptSettings	first attempt settings

createNextAttempt(RetryingContext context, Throwable previousThrowable, ResponseT previousResponse, TimedAttemptSettings previousSettings)

public TimedAttemptSettings createNextAttempt(RetryingContext context, Throwable previousThrowable, ResponseT previousResponse, TimedAttemptSettings previousSettings)

Creates a next attempt TimedAttemptSettings. This method will return first non-null value, returned by either result or timed retry algorithms in that particular order.

Parameters

Name	Description
context	`RetryingContext` the RetryingContext that can be used to determine the RetrySettings for the next attempt
previousThrowable	`Throwable` exception thrown by the previous attempt or null if a result was returned instead
previousResponse	`ResponseT` response returned by the previous attempt or null if an exception was thrown instead
previousSettings	`TimedAttemptSettings` previous attempt settings

Returns

Type	Description
TimedAttemptSettings	next attempt settings, can be `null`, if there should be no new attempt

createNextAttempt(Throwable previousThrowable, ResponseT previousResponse, TimedAttemptSettings previousSettings) (deprecated)

public TimedAttemptSettings createNextAttempt(Throwable previousThrowable, ResponseT previousResponse, TimedAttemptSettings previousSettings)

Deprecated. use #createNextAttempt(RetryingContext, Throwable, Object, TimedAttemptSettings) instead

Creates a next attempt TimedAttemptSettings. This method will return first non-null value, returned by either result or timed retry algorithms in that particular order.

Parameters

Name	Description
previousThrowable	`Throwable` exception thrown by the previous attempt or null if a result was returned instead
previousResponse	`ResponseT` response returned by the previous attempt or null if an exception was thrown instead
previousSettings	`TimedAttemptSettings` previous attempt settings

Returns

Type	Description
TimedAttemptSettings	next attempt settings, can be `null`, if no there should be no new attempt

getResultAlgorithm()

public ResultRetryAlgorithm<ResponseT> getResultAlgorithm()

Returns

Type	Description
ResultRetryAlgorithm<ResponseT>

getTimedAlgorithm()

public TimedRetryAlgorithm getTimedAlgorithm()

Returns

Type	Description
TimedRetryAlgorithm

shouldRetry(RetryingContext context, Throwable previousThrowable, ResponseT previousResponse, TimedAttemptSettings nextAttemptSettings)

public boolean shouldRetry(RetryingContext context, Throwable previousThrowable, ResponseT previousResponse, TimedAttemptSettings nextAttemptSettings)

Returns true if another attempt should be made, or false otherwise.

Parameters

Name	Description
context	`RetryingContext` the RetryingContext that can be used to determine whether another attempt should be made
previousThrowable	`Throwable` exception thrown by the previous attempt or null if a result was returned instead
previousResponse	`ResponseT` response returned by the previous attempt or null if an exception was thrown instead
nextAttemptSettings	`TimedAttemptSettings` attempt settings, which will be used for the next attempt, if accepted

Returns

Type	Description
boolean	`true` if another attempt should be made, or `false` otherwise

Exceptions

Type	Description
CancellationException	if the retrying process should be cancelled

shouldRetry(Throwable previousThrowable, ResponseT previousResponse, TimedAttemptSettings nextAttemptSettings) (deprecated)

public boolean shouldRetry(Throwable previousThrowable, ResponseT previousResponse, TimedAttemptSettings nextAttemptSettings)

Deprecated. use #shouldRetry(RetryingContext, Throwable, Object, TimedAttemptSettings) instead

Returns true if another attempt should be made, or false otherwise.

Parameters

Name	Description
previousThrowable	`Throwable` exception thrown by the previous attempt or null if a result was returned instead
previousResponse	`ResponseT` response returned by the previous attempt or null if an exception was thrown instead
nextAttemptSettings	`TimedAttemptSettings` attempt settings, which will be used for the next attempt, if accepted

Returns

Type	Description
boolean	`true` if another attempt should be made, or `false` otherwise

Exceptions

Type	Description
CancellationException	if the retrying process should be canceled