/* * 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.io.sstable.metadata; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.Collections; import java.util.EnumSet; import java.util.Map; import org.junit.Test; import org.apache.cassandra.SchemaLoader; import org.apache.cassandra.config.CFMetaData; import org.apache.cassandra.db.SerializationHeader; import org.apache.cassandra.config.DatabaseDescriptor; import org.apache.cassandra.db.commitlog.IntervalSet; import org.apache.cassandra.db.commitlog.ReplayPosition; import org.apache.cassandra.dht.RandomPartitioner; import org.apache.cassandra.io.sstable.Component; import org.apache.cassandra.io.sstable.Descriptor; import org.apache.cassandra.io.sstable.format.Version; import org.apache.cassandra.io.sstable.format.big.BigFormat; import org.apache.cassandra.io.util.BufferedDataOutputStreamPlus; import org.apache.cassandra.io.util.DataOutputStreamPlus; import org.apache.cassandra.io.util.RandomAccessReader; import static org.junit.Assert.assertEquals; public class MetadataSerializerTest { @Test public void testSerialization() throws IOException { Map<MetadataType, MetadataComponent> originalMetadata = constructMetadata(); MetadataSerializer serializer = new MetadataSerializer(); File statsFile = serialize(originalMetadata, serializer, BigFormat.latestVersion); Descriptor desc = new Descriptor( statsFile.getParentFile(), "", "", 0); try (RandomAccessReader in = RandomAccessReader.open(statsFile)) { Map<MetadataType, MetadataComponent> deserialized = serializer.deserialize(desc, in, EnumSet.allOf(MetadataType.class)); for (MetadataType type : MetadataType.values()) { assertEquals(originalMetadata.get(type), deserialized.get(type)); } } } public File serialize(Map<MetadataType, MetadataComponent> metadata, MetadataSerializer serializer, Version version) throws IOException, FileNotFoundException { // Serialize to tmp file File statsFile = File.createTempFile(Component.STATS.name, null); try (DataOutputStreamPlus out = new BufferedDataOutputStreamPlus(new FileOutputStream(statsFile))) { serializer.serialize(metadata, out, version); } return statsFile; } public Map<MetadataType, MetadataComponent> constructMetadata() { ReplayPosition club = new ReplayPosition(11L, 12); ReplayPosition cllb = new ReplayPosition(9L, 12); CFMetaData cfm = SchemaLoader.standardCFMD("ks1", "cf1"); MetadataCollector collector = new MetadataCollector(cfm.comparator) .commitLogIntervals(new IntervalSet(cllb, club)); String partitioner = RandomPartitioner.class.getCanonicalName(); double bfFpChance = 0.1; Map<MetadataType, MetadataComponent> originalMetadata = collector.finalizeMetadata(partitioner, bfFpChance, 0, SerializationHeader.make(cfm, Collections.emptyList())); return originalMetadata; } @Test public void testLaReadLb() throws IOException { testOldReadsNew("la", "lb"); } @Test public void testMaReadMb() throws IOException { testOldReadsNew("ma", "mb"); } @Test public void testMaReadMc() throws IOException { testOldReadsNew("ma", "mc"); } @Test public void testMbReadMc() throws IOException { testOldReadsNew("mb", "mc"); } public void testOldReadsNew(String oldV, String newV) throws IOException { Map<MetadataType, MetadataComponent> originalMetadata = constructMetadata(); MetadataSerializer serializer = new MetadataSerializer(); // Write metadata in two minor formats. File statsFileLb = serialize(originalMetadata, serializer, BigFormat.instance.getVersion(newV)); File statsFileLa = serialize(originalMetadata, serializer, BigFormat.instance.getVersion(oldV)); // Reading both as earlier version should yield identical results. Descriptor desc = new Descriptor(oldV, statsFileLb.getParentFile(), "", "", 0, DatabaseDescriptor.getSSTableFormat()); try (RandomAccessReader inLb = RandomAccessReader.open(statsFileLb); RandomAccessReader inLa = RandomAccessReader.open(statsFileLa)) { Map<MetadataType, MetadataComponent> deserializedLb = serializer.deserialize(desc, inLb, EnumSet.allOf(MetadataType.class)); Map<MetadataType, MetadataComponent> deserializedLa = serializer.deserialize(desc, inLa, EnumSet.allOf(MetadataType.class)); for (MetadataType type : MetadataType.values()) { assertEquals(deserializedLa.get(type), deserializedLb.get(type)); if (!originalMetadata.get(type).equals(deserializedLb.get(type))) { // Currently only STATS can be different. Change if no longer the case assertEquals(MetadataType.STATS, type); } } } } }