Package com.google.cloud.storage

Interface StorageRetryStrategy

All Superinterfaces:

Serializable

public interface StorageRetryStrategy
extends Serializable

A factory class which is used to provide access to ResultRetryAlgorithm for idempotent and non-idempotent calls made via Storage. Before Storage performs an operation it will determine if the operation is idempotent and select the appropriate ResultRetryAlgorithm to use for that invocation.

See Also:

• getDefaultStorageRetryStrategy()
• getUniformStorageRetryStrategy()

Method Summary

Modifier and Type	Method	Description
static StorageRetryStrategy	getDefaultStorageRetryStrategy()	Factory method to get an instance of the default implementation of StorageRetryStrategy.
com.google.api.gax.retrying.ResultRetryAlgorithm<?>	getIdempotentHandler()	Factory method to provide a ResultRetryAlgorithm which will be used to evaluate whether a retry can happen for an operation which has been deemed idempotent.
static StorageRetryStrategy	getLegacyStorageRetryStrategy()	Deprecated. please migrate to using getDefaultStorageRetryStrategy() which is capable of providing handlers which are appropriate for idempotent and non-idempotent calls.
com.google.api.gax.retrying.ResultRetryAlgorithm<?>	getNonidempotentHandler()
static StorageRetryStrategy	getUniformStorageRetryStrategy()	Factory method to get an instance of StorageRetryStrategy which will uniformly retry all calls as if they were idempotent.

Method Details

getIdempotentHandler

com.google.api.gax.retrying.ResultRetryAlgorithm<?> getIdempotentHandler()

Factory method to provide a ResultRetryAlgorithm which will be used to evaluate whether a retry can happen for an operation which has been deemed idempotent.

Returns:

getNonidempotentHandler

com.google.api.gax.retrying.ResultRetryAlgorithm<?> getNonidempotentHandler()

getDefaultStorageRetryStrategy

static StorageRetryStrategy getDefaultStorageRetryStrategy()

Factory method to get an instance of the default implementation of StorageRetryStrategy. The returned instance is provides handler which are appropriate for calls which are known to be idempotent vs non-idempotent.

All non-idempotent calls will not be retried

The set of retryable cases handled by this strategy is more comprehensive than that of the legacy strategy and should always be preferred.

Retried HTTP status codes for idempotent calls

Code	Name
408	Request Timeout
429	Too Many Requests
500	Internal Server Error
502	Bad Gateway
503	Service Unavailable
504	Gateway Timeout

See Also:

• StorageOptions.Builder.setStorageRetryStrategy(StorageRetryStrategy)
• getUniformStorageRetryStrategy()

getUniformStorageRetryStrategy

static StorageRetryStrategy getUniformStorageRetryStrategy()

Factory method to get an instance of StorageRetryStrategy which will uniformly retry all calls as if they were idempotent.

NOTE:This strategy is unsafe and will result in retying some non-idempotent calls. Care should be taken to ensure calls which would not normally be considered idempotent are made idempotent by some other means in your program.

See Also:

• StorageOptions.Builder.setStorageRetryStrategy(StorageRetryStrategy)
• getDefaultStorageRetryStrategy()

getLegacyStorageRetryStrategy

@Deprecated
static StorageRetryStrategy getLegacyStorageRetryStrategy()

Deprecated.

please migrate to using getDefaultStorageRetryStrategy() which is capable of providing handlers which are appropriate for idempotent and non-idempotent calls.

Factory method to get an instance of StorageRetryStrategy with the behavior which was used prior to version 2.1.8. This strategy is unsafe and will result in retying some non-idempotent calls.

See Also:

• StorageOptions.Builder.setStorageRetryStrategy(StorageRetryStrategy)
• getDefaultStorageRetryStrategy()