java/src/main/com/google/appengine/tools/development/Clock.java

   1 // Copyright 2010 Google Inc. All Rights Reserved.
   2 package com.google.appengine.tools.development;
   3
   4 /**
   5  * Clock abstraction used by all local service implementations.
   6  * Allows tests to override 'now'.
   7  *
   8  */
   9 public interface Clock {
  10   /**
  11    * @return current time in milliseconds-since-epoch.
  12    */
  13   long getCurrentTime();
  14
  15   /**
  16    * The Clock instance used by local services if no override is
  17    * provided via {@link ApiProxyLocal#setClock(Clock)}
  18    */
  19   Clock DEFAULT = new Clock() {
  20     @Override
  21     public long getCurrentTime() {
  22       return System.currentTimeMillis();
  23     }
  24   };
  25 }