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, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.util; 019 020import static junit.framework.TestCase.assertTrue; 021 022import org.apache.hadoop.hbase.HBaseClassTestRule; 023import org.apache.hadoop.hbase.testclassification.MiscTests; 024import org.apache.hadoop.hbase.testclassification.SmallTests; 025import org.junit.ClassRule; 026import org.junit.Test; 027import org.junit.experimental.categories.Category; 028import org.slf4j.Logger; 029import org.slf4j.LoggerFactory; 030 031 032/** 033* Basic test for some old functionality we don't seem to have used but that looks nice. 034 */ 035@Category({MiscTests.class, SmallTests.class}) 036public class TestRetryCounter { 037 @ClassRule 038 public static final HBaseClassTestRule CLASS_RULE = 039 HBaseClassTestRule.forClass(TestRetryCounter.class); 040 private static final Logger LOG = LoggerFactory.getLogger(TestRetryCounter.class); 041 042 @Test 043 public void testBasics() throws InterruptedException { 044 int maxAttempts = 10; 045 RetryCounterFactory factory = 046 new RetryCounterFactory(maxAttempts, 10, 1000); 047 RetryCounter retryCounter = factory.create(); 048 while (retryCounter.shouldRetry()) { 049 LOG.info("Attempt={}, backoffTime={}", retryCounter.getAttemptTimes(), 050 retryCounter.getBackoffTime()); 051 retryCounter.sleepUntilNextRetry(); 052 } 053 assertTrue(retryCounter.getAttemptTimes() == maxAttempts); 054 } 055}