/* * 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.cassandra.repair; import java.net.InetAddress; import java.util.HashSet; import java.util.Set; import java.util.UUID; import org.junit.After; import org.junit.Test; import org.apache.cassandra.SchemaLoader; import org.apache.cassandra.dht.IPartitioner; import org.apache.cassandra.dht.Murmur3Partitioner; import org.apache.cassandra.dht.Range; import org.apache.cassandra.dht.Token; import org.apache.cassandra.net.MessageIn; import org.apache.cassandra.net.MessageOut; import org.apache.cassandra.net.MessagingService; import org.apache.cassandra.net.sink.IMessageSink; import org.apache.cassandra.net.sink.SinkManager; import org.apache.cassandra.repair.messages.RepairMessage; import org.apache.cassandra.repair.messages.SyncComplete; import org.apache.cassandra.utils.MerkleTree; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertTrue; public class DifferencerTest extends SchemaLoader { private static final IPartitioner partirioner = new Murmur3Partitioner(); @After public void tearDown() { SinkManager.clear(); } /** * When there is no difference between two, Differencer should respond SYNC_COMPLETE */ @Test public void testNoDifference() throws Throwable { final InetAddress ep1 = InetAddress.getByName("127.0.0.1"); final InetAddress ep2 = InetAddress.getByName("127.0.0.1"); SinkManager.add(new IMessageSink() { @SuppressWarnings("unchecked") public MessageOut handleMessage(MessageOut message, int id, InetAddress to) { if (message.verb == MessagingService.Verb.REPAIR_MESSAGE) { RepairMessage m = (RepairMessage) message.payload; assertEquals(RepairMessage.Type.SYNC_COMPLETE, m.messageType); // we should see SYNC_COMPLETE assertEquals(new NodePair(ep1, ep2), ((SyncComplete)m).nodes); } return null; } public MessageIn handleMessage(MessageIn message, int id, InetAddress to) { return null; } }); Range<Token> range = new Range<>(partirioner.getMinimumToken(), partirioner.getRandomToken()); RepairJobDesc desc = new RepairJobDesc(UUID.randomUUID(), "Keyspace1", "Standard1", range); MerkleTree tree1 = createInitialTree(desc); MerkleTree tree2 = createInitialTree(desc); // difference the trees // note: we reuse the same endpoint which is bogus in theory but fine here TreeResponse r1 = new TreeResponse(ep1, tree1); TreeResponse r2 = new TreeResponse(ep2, tree2); Differencer diff = new Differencer(desc, r1, r2); diff.run(); assertTrue(diff.differences.isEmpty()); } @Test public void testDifference() throws Throwable { Range<Token> range = new Range<>(partirioner.getMinimumToken(), partirioner.getRandomToken()); RepairJobDesc desc = new RepairJobDesc(UUID.randomUUID(), "Keyspace1", "Standard1", range); MerkleTree tree1 = createInitialTree(desc); MerkleTree tree2 = createInitialTree(desc); // change a range in one of the trees Token token = partirioner.midpoint(range.left, range.right); tree1.invalidate(token); MerkleTree.TreeRange changed = tree1.get(token); changed.hash("non-empty hash!".getBytes()); Set<Range<Token>> interesting = new HashSet<>(); interesting.add(changed); // difference the trees // note: we reuse the same endpoint which is bogus in theory but fine here TreeResponse r1 = new TreeResponse(InetAddress.getByName("127.0.0.1"), tree1); TreeResponse r2 = new TreeResponse(InetAddress.getByName("127.0.0.2"), tree2); Differencer diff = new Differencer(desc, r1, r2); diff.run(); // ensure that the changed range was recorded assertEquals("Wrong differing ranges", interesting, new HashSet<>(diff.differences)); } private MerkleTree createInitialTree(RepairJobDesc desc) { MerkleTree tree = new MerkleTree(partirioner, desc.range, MerkleTree.RECOMMENDED_DEPTH, (int)Math.pow(2, 15)); tree.init(); for (MerkleTree.TreeRange r : tree.invalids()) { r.ensureHashInitialised(); } return tree; } }