How can I customize spring @retryable?

Question

I have this piece of code

@Retryable(maxAttempts = 3, stateful = true, include = ServiceUnavailableException.class,
        exclude = URISyntaxException.class, backoff = @Backoff(delay = 1000, multiplier = 2) )
public void testThatService(String serviceAccountId)
        throws ServiceUnavailableException, URISyntaxException {

// some implementation here}

Is there a way to make maxAttempts, delay and multiplier customizable with @Value? Or is there any other approach that allows you to customize such fields inside annotations?

Answer 1

This is currently not possible; for posting in properties, the annotation would have to be modified to accept String values, and the bean annotation post-processor would have to remove the placeholders and / or SpEL expressions.

See this answer for an alternative, but this is currently not possible with annotation.

EDIT

<bean id="retryAdvice" class="org.springframework.retry.interceptor.RetryOperationsInterceptor">
    <property name="retryOperations">
        <bean class="org.springframework.retry.support.RetryTemplate">
            <property name="retryPolicy">
                <bean class="org.springframework.retry.policy.SimpleRetryPolicy">
                    <property name="maxAttempts" value="${max.attempts}" />
                </bean>
            </property>
            <property name="backOffPolicy">
                <bean class="org.springframework.retry.backoff.ExponentialBackOffPolicy">
                    <property name="initialInterval" value="${delay}" />
                    <property name="multiplier" value="${multiplier}" />
                </bean>
            </property>
        </bean>
    </property>
</bean>

<aop:config>
    <aop:pointcut id="retries"
        expression="execution(* org..EchoService.test(..))" />
    <aop:advisor pointcut-ref="retries" advice-ref="retryAdvice"
        order="-1" />
</aop:config>

EchoService.test - , .

Answer 2

Spring -retry 1.2, . @Retryable SPEL.

@Retryable(value = { SomeException.class,AnotherException.class }, maxAttemptsExpression = "#{@myBean.getMyProperties('retryCount')}", backoff = @Backoff(delayExpression = "#{@myBean.getMyProperties('retryInitalInterval')}"))
    public void doJob(){
     //your code here
        }

. https://github.com/spring-projects/spring-retry/blob/master/README.md

Answer 3

RetryTemplate bean @Retryable :

@Value("${retry.max-attempts}")
private int maxAttempts;
@Value("${retry.delay}")
private long delay;

@Bean
public RetryTemplate retryTemplate() {
    SimpleRetryPolicy retryPolicy = new SimpleRetryPolicy();
    retryPolicy.setMaxAttempts(maxAttempts);

    FixedBackOffPolicy backOffPolicy = new FixedBackOffPolicy();
    backOffPolicy.setBackOffPeriod(delay);

    RetryTemplate template = new RetryTemplate();
    template.setRetryPolicy(retryPolicy);
    template.setBackOffPolicy(backOffPolicy);
    return template;
}

execute :

@Autowired
private RetryTemplate retryTemplate;

public ResponseVo doSomething(final Object data) {
    RetryCallback<ResponseVo, SomeException> retryCallback = new RetryCallback<ResponseVo, SomeException>() {
        @Override
        public ResponseVo doWithRetry(RetryContext context) throws SomeException {
             // do the business
             return responseVo;
        }
    };
    return retryTemplate.execute(retryCallback);
}

Answer 4

: fooobar.com/questions/1645987/...

1.2 .

So you need something like this:

@Retryable(maxAttempts = 3, stateful = true, include = ServiceUnavailableException.class,
        exclude = URISyntaxException.class, backoff = @Backoff(delayExpression = "#{${your.delay}}" , multiplier = 2) )
public void testThatService(String serviceAccountId)
        throws ServiceUnavailableException, URISyntaxException {