Package com.github.sonus21.rqueue.utils.backoff

Class FixedTaskExecutionBackOff

  • All Implemented Interfaces:
    TaskExecutionBackOff
    public class FixedTaskExecutionBackOff
extends java.lang.Object
implements TaskExecutionBackOff
    Implementation of the TaskExecutionBackOff class, that always return the same value, except if number of failures have increased too high.

    Default delay for the task is 5 seconds, and maximum number of retries is 2147483647.

    There's another implementation of this, that provides exponential delay.

    See Also:
    ExponentialTaskExecutionBackOff

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static long DEFAULT_INTERVAL
      The default task delay: 5000 ms = 5 seconds.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean equals​(java.lang.Object other)  
      long getInterval()
      Return the delay between two attempts in milliseconds.
      protected long getInterval​(java.lang.Object message, RqueueMessage rqueueMessage, int failureCount)  
      int getMaxRetries()
      Return the maximum number of retries.
      protected int getMaxRetries​(java.lang.Object message, RqueueMessage rqueueMessage, int failureCount)  
      long nextBackOff​(java.lang.Object message, RqueueMessage rqueueMessage, int failureCount)
      Return the number of milliseconds to wait for the same message to be consumed by other consumers.
      void setInterval​(long interval)
      Set the delay between two attempts in milliseconds.
      void setMaxRetries​(int maxRetries)
      Set the maximum number of retries

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • DEFAULT_INTERVAL

        public static final long DEFAULT_INTERVAL
        The default task delay: 5000 ms = 5 seconds.
        See Also:
        Constant Field Values

    • Constructor Detail

      • FixedTaskExecutionBackOff

        public FixedTaskExecutionBackOff()
        Create an instance with an interval of 5000L ms and maximum value of retries.

      • FixedTaskExecutionBackOff

        public FixedTaskExecutionBackOff​(long interval,
                                 int maxRetries)
        Create an instance.
        Parameters:
        interval - the delay between two attempts.
        maxRetries - the maximum number of retries.

    • Method Detail

      • getInterval

        public long getInterval()
        Return the delay between two attempts in milliseconds.
        Returns:
        the configured interval in milli seconds.

      • setInterval

        public void setInterval​(long interval)
        Set the delay between two attempts in milliseconds.
        Parameters:
        interval - delay between two attempts.

      • getMaxRetries

        public int getMaxRetries()
        Return the maximum number of retries.
        Returns:
        max retires

      • setMaxRetries

        public void setMaxRetries​(int maxRetries)
        Set the maximum number of retries
        Parameters:
        maxRetries - max number of retires

      • nextBackOff

        public long nextBackOff​(java.lang.Object message,
                        RqueueMessage rqueueMessage,
                        int failureCount)
        Description copied from interface: TaskExecutionBackOff
        Return the number of milliseconds to wait for the same message to be consumed by other consumers. (-1L) to indicate that no further enqueue should be made for the message.
        Specified by:
        nextBackOff in interface TaskExecutionBackOff
        Parameters:
        message - message that's fetched
        rqueueMessage - raw message
        failureCount - number of times this message has failed.
        Returns:
        backoff in the millisecond.

      • getMaxRetries

        protected int getMaxRetries​(java.lang.Object message,
                            RqueueMessage rqueueMessage,
                            int failureCount)

      • getInterval

        protected long getInterval​(java.lang.Object message,
                           RqueueMessage rqueueMessage,
                           int failureCount)

      • equals

        public boolean equals​(java.lang.Object other)
        Overrides:
        equals in class java.lang.Object