001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.reef.driver; 020 021import org.apache.reef.annotations.audience.DriverSide; 022import org.apache.reef.annotations.audience.Public; 023import org.apache.reef.tang.annotations.DefaultImplementation; 024 025/** 026 * Used in the to report the progress of the REEF application. 027 * The default implementation always returns a progress of 0. 028 */ 029@Public 030@DriverSide 031@DefaultImplementation(DefaultProgressProvider.class) 032public interface ProgressProvider { 033 034 /** 035 * @return The progress of the REEF application. 036 */ 037 float getProgress(); 038}