Package com.azure.core.http.policy

Class RetryPolicy

java.lang.Object

com.azure.core.http.policy.RetryPolicy

All Implemented Interfaces:

HttpPipelinePolicy

public class RetryPolicy
extends Object
implements HttpPipelinePolicy

A pipeline policy that retries when a recoverable HTTP error or exception occurs.

Constructor Summary

Constructors

Constructor	Description
RetryPolicy()	Creates RetryPolicy using ExponentialBackoff() as the RetryStrategy.
RetryPolicy(RetryStrategy retryStrategy)	Creates a RetryPolicy with the provided RetryStrategy.
RetryPolicy(RetryStrategy retryStrategy, String retryAfterHeader, ChronoUnit retryAfterTimeUnit)	Creates RetryPolicy with the provided RetryStrategy and default ExponentialBackoff as RetryStrategy.
RetryPolicy(String retryAfterHeader, ChronoUnit retryAfterTimeUnit)	Creates RetryPolicy using ExponentialBackoff() as the RetryStrategy and uses retryAfterHeader to look up the wait period in the returned HttpResponse to calculate the retry delay when a recoverable HTTP error is returned.

Method Summary

Modifier and Type	Method	Description
Mono<HttpResponse>	process(HttpPipelineCallContext context, HttpPipelineNextPolicy next)	Processes provided request context and invokes the next policy.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.azure.core.http.policy.HttpPipelinePolicy

getPipelinePosition

Constructor Detail

RetryPolicy

public RetryPolicy()

Creates RetryPolicy using ExponentialBackoff() as the RetryStrategy.

RetryPolicy

public RetryPolicy(String retryAfterHeader,
                   ChronoUnit retryAfterTimeUnit)

Creates RetryPolicy using ExponentialBackoff() as the RetryStrategy and uses retryAfterHeader to look up the wait period in the returned HttpResponse to calculate the retry delay when a recoverable HTTP error is returned.

Parameters:

retryAfterHeader - The HTTP header, such as Retry-After or x-ms-retry-after-ms, to lookup for the retry delay. If the value is null, RetryStrategy.calculateRetryDelay(int) will compute the delay and ignore the delay provided in response header.

retryAfterTimeUnit - The time unit to use when applying the retry delay. Null is valid if, and only if, retryAfterHeader is null.

Throws:

NullPointerException - When retryAfterTimeUnit is null and retryAfterHeader is not null.

RetryPolicy

public RetryPolicy(RetryStrategy retryStrategy,
                   String retryAfterHeader,
                   ChronoUnit retryAfterTimeUnit)

Creates RetryPolicy with the provided RetryStrategy and default ExponentialBackoff as RetryStrategy. It will use provided retryAfterHeader in HttpResponse headers for calculating retry delay.

Parameters:

retryStrategy - The RetryStrategy used for retries.

retryAfterHeader - The HTTP header, such as 'Retry-After' or 'x-ms-retry-after-ms', to lookup for the retry delay. If the value is null, RetryPolicy will use the retry strategy to compute the delay and ignore the delay provided in response header.

retryAfterTimeUnit - The time unit to use when applying the retry delay. null is valid if, and only if, retryAfterHeader is null.

Throws:

NullPointerException - If retryStrategy is null or when retryAfterTimeUnit is null and retryAfterHeader is not null.

RetryPolicy

public RetryPolicy(RetryStrategy retryStrategy)

Creates a RetryPolicy with the provided RetryStrategy.

Parameters:

retryStrategy - The RetryStrategy used for retries.

Throws:

NullPointerException - If retryStrategy is null.

Method Detail

process

public Mono<HttpResponse> process(HttpPipelineCallContext context,
                                  HttpPipelineNextPolicy next)

Description copied from interface: HttpPipelinePolicy

Processes provided request context and invokes the next policy.

Specified by:

process in interface HttpPipelinePolicy

Parameters:

context - The request context.

next - The next policy to invoke.

Returns:

A publisher that initiates the request upon subscription and emits a response on completion.