A Groovy way to retry method calls in case of exceptions

In some scenarios, method calls can fail – but would succeed when retrying the call after some seconds have passed.

That is often the case with remote method calls, where the remote application could be temporarily unavaillable.

I needed a simple way to define something like

“call method foo(). In case the method throws an Exception, retry to call it up to 10 times with a delay of 3 seconds”.

I implemented a simple Groovy util class which enabled me to write code as follows:

RetryUtil.retry(10, 3000){
	foo()
}

Here is the sourcecode of the RetryUtil Groovy class:

import org.apache.commons.logging.LogFactory
import org.apache.commons.logging.Log

class RetryUtil {

private static Log log = LogFactory.getLog(RetryUtil);

static retry(int times, long sleeptime, Closure c){
Throwable catchedThrowable = null
for(int i=0; i