001/* 002 * (C) Copyright 2006-2014 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.nuxeo.ecm.core.redis.retry; 017 018import java.util.concurrent.TimeUnit; 019 020import org.apache.commons.logging.LogFactory; 021 022public class SimpleDelay implements Retry.Policy { 023 024 protected final int base; 025 026 protected final long delay; 027 028 protected int elapsed; 029 030 public SimpleDelay(int base, int delay) { 031 this.base = base; 032 this.delay = TimeUnit.MILLISECONDS.convert(delay, TimeUnit.SECONDS); 033 } 034 035 @Override 036 public boolean allow() { 037 return elapsed < delay; 038 } 039 040 @Override 041 public void pause() { 042 long computed = computeDelay(); 043 LogFactory.getLog(SimpleDelay.class).warn("pausing for " + computed + " ms"); 044 try { 045 Thread.sleep(computed); 046 } catch (InterruptedException e) { 047 Thread.currentThread().interrupt(); 048 } 049 elapsed += computed; 050 } 051 052 protected long computeDelay() { 053 return base; 054 } 055 056}