Package software.amazon.lambda.powertools.idempotency.persistence

Interface PersistenceStore

All Known Implementing Classes:

BasePersistenceStore

public interface PersistenceStore

Persistence layer that will store the idempotency result. In order to provide another implementation, extends BasePersistenceStore.

Method Summary

Modifier and Type	Method	Description
void	deleteRecord(String idempotencyKey)	Remove item from persistence store
DataRecord	getRecord(String idempotencyKey)	Retrieve item from persistence store using idempotency key and return it as a DataRecord instance.
void	putRecord(DataRecord record, Instant now)	Add a DataRecord to persistence store if it does not already exist with that key
void	updateRecord(DataRecord record)	Update item in persistence store

Method Details

getRecord

DataRecord getRecord(String idempotencyKey)
              throws IdempotencyItemNotFoundException

Retrieve item from persistence store using idempotency key and return it as a DataRecord instance.

Parameters:

idempotencyKey - the key of the record

Returns:

DataRecord representation of existing record found in persistence store

Throws:

IdempotencyItemNotFoundException - Exception thrown if no record exists in persistence store with the idempotency key

putRecord

void putRecord(DataRecord record,
 Instant now)
        throws IdempotencyItemAlreadyExistsException

Add a DataRecord to persistence store if it does not already exist with that key

Parameters:

record - DataRecord instance

now -

Throws:

IdempotencyItemAlreadyExistsException - if a non-expired entry already exists.

updateRecord

void updateRecord(DataRecord record)

Update item in persistence store

Parameters:

record - DataRecord instance

deleteRecord

void deleteRecord(String idempotencyKey)

Remove item from persistence store

Parameters:

idempotencyKey - the key of the record