opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/NoopProcedure.java

   1 /*
   2  * Copyright (c) 2015 Brocade Communications Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.raft;
   9
  10 import akka.japi.Procedure;
  11
  12 /**
  13  * An akka Procedure that does nothing.
  14  *
  15  * @author Thomas Pantelis
  16  *
  17  * @param <T> the Procedure type
  18  */
  19 public class NoopProcedure<T> implements Procedure<T> {
  20
  21     private static final NoopProcedure<Object> INSTANCE = new NoopProcedure<>();
  22
  23     private NoopProcedure() {
  24     }
  25
  26     @SuppressWarnings("unchecked")
  27     public static <T> NoopProcedure<T> instance() {
  28         return (NoopProcedure<T>) INSTANCE;
  29     }
  30
  31     @Override
  32     public void apply(Object notUsed) {
  33         // nothing to do
  34     }
  35 }