jdeppe-pivotal commented on a change in pull request #7403: URL: https://github.com/apache/geode/pull/7403#discussion_r836847195
########## File path: geode-for-redis/src/distributedTest/java/org/apache/geode/redis/internal/commands/executor/list/LTrimDUnitTest.java ########## @@ -0,0 +1,178 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more contributor license + * agreements. See the NOTICE file distributed with this work for additional information regarding + * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the License. You may obtain a + * copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software distributed under the License + * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express + * or implied. See the License for the specific language governing permissions and limitations under + * the License. + */ + +package org.apache.geode.redis.internal.commands.executor.list; + +import static org.apache.geode.test.dunit.rules.RedisClusterStartupRule.BIND_ADDRESS; +import static org.apache.geode.test.dunit.rules.RedisClusterStartupRule.REDIS_CLIENT_TIMEOUT; +import static org.assertj.core.api.Assertions.assertThat; + +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.Future; +import java.util.concurrent.atomic.AtomicBoolean; + +import org.junit.After; +import org.junit.Before; +import org.junit.Rule; +import org.junit.Test; +import redis.clients.jedis.HostAndPort; +import redis.clients.jedis.JedisCluster; + +import org.apache.geode.test.dunit.rules.MemberVM; +import org.apache.geode.test.dunit.rules.RedisClusterStartupRule; +import org.apache.geode.test.junit.rules.ExecutorServiceRule; + +public class LTrimDUnitTest { + public static final int INITIAL_LIST_SIZE = 5_000; + + @Rule + public RedisClusterStartupRule clusterStartUp = new RedisClusterStartupRule(); + + @Rule + public ExecutorServiceRule executor = new ExecutorServiceRule(); + + private static JedisCluster jedis; + + @Before + public void testSetup() { + MemberVM locator = clusterStartUp.startLocatorVM(0); + clusterStartUp.startRedisVM(1, locator.getPort()); + clusterStartUp.startRedisVM(2, locator.getPort()); + clusterStartUp.startRedisVM(3, locator.getPort()); + int redisServerPort = clusterStartUp.getRedisPort(1); + jedis = new JedisCluster(new HostAndPort(BIND_ADDRESS, redisServerPort), REDIS_CLIENT_TIMEOUT); + clusterStartUp.flushAll(); + } + + @After + public void tearDown() { + jedis.close(); + } + + @Test + public void shouldDistributeDataAmongCluster_andRetainDataAfterServerCrash() { + String key = makeListKeyWithHashtag(1, clusterStartUp.getKeyOnServer("ltrim", 1)); + List<String> elementList = makeElementList(key, INITIAL_LIST_SIZE); + lpushPerformAndVerify(key, elementList); + + // Remove all but last element + jedis.ltrim(key, INITIAL_LIST_SIZE - 1, INITIAL_LIST_SIZE); + + clusterStartUp.crashVM(1); // kill primary server + + assertThat(jedis.lindex(key, 0)).isEqualTo(elementList.get(0)); + jedis.ltrim(key, 0, -2); + assertThat(jedis.exists(key)).isFalse(); + } + + @Test + public void givenBucketsMoveDuringLtrim_thenOperationsAreNotLost() throws Exception { + AtomicBoolean isRunning = new AtomicBoolean(true); + List<String> listHashtags = makeListHashtags(); + List<String> keys = makeListKeys(listHashtags); + + List<String> elementList1 = makeElementList(keys.get(0), INITIAL_LIST_SIZE); + List<String> elementList2 = makeElementList(keys.get(1), INITIAL_LIST_SIZE); + List<String> elementList3 = makeElementList(keys.get(2), INITIAL_LIST_SIZE); + + Runnable task1 = + () -> ltrimPerformAndVerify(keys.get(0), isRunning, elementList1); + Runnable task2 = + () -> ltrimPerformAndVerify(keys.get(1), isRunning, elementList2); + Runnable task3 = + () -> ltrimPerformAndVerify(keys.get(2), isRunning, elementList3); + + Future<Void> future1 = executor.runAsync(task1); + Future<Void> future2 = executor.runAsync(task2); + Future<Void> future3 = executor.runAsync(task3); + + for (int i = 0; i < 100; i++) { + clusterStartUp.moveBucketForKey(listHashtags.get(i % listHashtags.size())); + Thread.sleep(200); + } + + isRunning.set(false); + + future1.get(); + future2.get(); + future3.get(); + } + + private List<String> makeListHashtags() { + List<String> listHashtags = new ArrayList<>(); + listHashtags.add(clusterStartUp.getKeyOnServer("ltrim", 1)); + listHashtags.add(clusterStartUp.getKeyOnServer("ltrim", 2)); + listHashtags.add(clusterStartUp.getKeyOnServer("ltrim", 3)); + return listHashtags; + } + + private List<String> makeListKeys(List<String> listHashtags) { + List<String> keys = new ArrayList<>(); + keys.add(makeListKeyWithHashtag(1, listHashtags.get(0))); + keys.add(makeListKeyWithHashtag(2, listHashtags.get(1))); + keys.add(makeListKeyWithHashtag(3, listHashtags.get(2))); + return keys; + } + + private void lpushPerformAndVerify(String key, List<String> elementList) { + jedis.lpush(key, elementList.toArray(new String[] {})); + + Long listLength = jedis.llen(key); + assertThat(listLength).as("Initial list lengths not equal for key %s'", key) + .isEqualTo(elementList.size()); + } + + private void ltrimPerformAndVerify(String key, + AtomicBoolean isRunning, + List<String> elementList) { + while (isRunning.get()) { + lpushPerformAndVerify(key, elementList); + + for (int i = 1; i <= INITIAL_LIST_SIZE / 2 && isRunning.get(); i++) { + long lastIndex = jedis.llen(key) - 2; + try { + assertThat(jedis.lindex(key, 0)).isEqualTo(makeElementString(key, INITIAL_LIST_SIZE - i)); + assertThat(jedis.lindex(key, lastIndex)).isEqualTo(makeElementString(key, i)); + jedis.ltrim(key, 1, lastIndex); + assertThat(jedis.llen(key)).as("Key: %s ", key).isEqualTo(lastIndex); + } catch (Exception ex) { + isRunning.set(false); // test is over + throw new RuntimeException("Exception performing LTRIM for list '" + + key + "' at step " + i + ": " + ex.getMessage()); + } + } Review comment: Exceptions thrown by the `assert`s won't be caught by the `catch` block and so won't stop the test. Not critical, but you could change this to: ``` try { assertThat(jedis.lindex(key, 0)) .as("lpush head verification failed at iteration " + i) .isEqualTo(makeElementString(key, INITIAL_LIST_SIZE - i)); assertThat(jedis.lindex(key, lastIndex)) .as("lpush tail verification failed at iteration " + i) .isEqualTo(makeElementString(key, i)); jedis.ltrim(key, 1, lastIndex); assertThat(jedis.llen(key)).as("Key: %s ", key).isEqualTo(lastIndex); } catch (Throwable ex) { isRunning.set(false); // test is over throw ex; } ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@geode.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
