Package org.eclipse.aether.named.support

Class Retry

  • public final class Retry
extends java.lang.Object
    Retry helper: retries given Callable as long as it returns null (interpreted as "no answer yet") or given time passes. This helper implements similar semantics regarding caller threads as Lock.tryLock(long, TimeUnit) method does: blocks the caller thread until operation return non-null value within the given waiting time and the current thread has not been interrupted.
    Since:
    1.7.3

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static org.slf4j.Logger LOGGER  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private Retry()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <R> R retry​(long time, java.util.concurrent.TimeUnit unit, long sleepMillis, java.util.concurrent.Callable<R> operation, java.util.function.Predicate<java.lang.Exception> retryPredicate, R defaultResult)
      Retries for given amount of time (time, unit) the passed in operation, sleeping given sleepMills between retries.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • LOGGER

        private static final org.slf4j.Logger LOGGER

    • Constructor Detail

      • Retry

        private Retry()

    • Method Detail

      • retry

        public static <R> R retry​(long time,
                          java.util.concurrent.TimeUnit unit,
                          long sleepMillis,
                          java.util.concurrent.Callable<R> operation,
                          java.util.function.Predicate<java.lang.Exception> retryPredicate,
                          R defaultResult)
                   throws java.lang.InterruptedException
        Retries for given amount of time (time, unit) the passed in operation, sleeping given sleepMills between retries. In case operation returns null, it is assumed "is not done yet" state, so retry will happen (if time barrier allows). If time barrier passes, and still null ("is not done yet") is returned from operation, the defaultResult is returned.
        Throws:
        java.lang.InterruptedException