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 * Basic test for some old functionality we don't seem to have used but that looks nice.
033 */
034@Category({ MiscTests.class, SmallTests.class })
035public class TestRetryCounter {
036  @ClassRule
037  public static final HBaseClassTestRule CLASS_RULE =
038    HBaseClassTestRule.forClass(TestRetryCounter.class);
039  private static final Logger LOG = LoggerFactory.getLogger(TestRetryCounter.class);
040
041  @Test
042  public void testBasics() throws InterruptedException {
043    int maxAttempts = 10;
044    RetryCounterFactory factory = new RetryCounterFactory(maxAttempts, 10, 1000);
045    RetryCounter retryCounter = factory.create();
046    while (retryCounter.shouldRetry()) {
047      LOG.info("Attempt={}, backoffTime={}", retryCounter.getAttemptTimes(),
048        retryCounter.getBackoffTime());
049      retryCounter.sleepUntilNextRetry();
050    }
051    assertTrue(retryCounter.getAttemptTimes() == maxAttempts);
052  }
053}