| /* |
| * 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.FileOutputStream; |
| import java.io.IOException; |
| import java.util.EnumSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import com.google.common.collect.Sets; |
| |
| import org.junit.Test; |
| import org.apache.cassandra.db.commitlog.ReplayPosition; |
| import org.apache.cassandra.db.composites.SimpleDenseCellNameType; |
| import org.apache.cassandra.db.marshal.BytesType; |
| 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.util.DataOutputStreamPlus; |
| import org.apache.cassandra.io.util.BufferedDataOutputStreamPlus; |
| import org.apache.cassandra.io.util.RandomAccessReader; |
| import org.apache.cassandra.utils.EstimatedHistogram; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class MetadataSerializerTest |
| { |
| @Test |
| public void testSerialization() throws IOException |
| { |
| EstimatedHistogram rowSizes = new EstimatedHistogram(new long[] { 1L, 2L }, |
| new long[] { 3L, 4L, 5L }); |
| EstimatedHistogram columnCounts = new EstimatedHistogram(new long[] { 6L, 7L }, |
| new long[] { 8L, 9L, 10L }); |
| ReplayPosition rp = new ReplayPosition(11L, 12); |
| long minTimestamp = 2162517136L; |
| long maxTimestamp = 4162517136L; |
| |
| MetadataCollector collector = new MetadataCollector(new SimpleDenseCellNameType(BytesType.instance)) |
| .estimatedRowSize(rowSizes) |
| .estimatedColumnCount(columnCounts) |
| .replayPosition(rp); |
| collector.updateMinTimestamp(minTimestamp); |
| collector.updateMaxTimestamp(maxTimestamp); |
| |
| Set<Integer> ancestors = Sets.newHashSet(1, 2, 3, 4); |
| for (int i : ancestors) |
| collector.addAncestor(i); |
| |
| String partitioner = RandomPartitioner.class.getCanonicalName(); |
| double bfFpChance = 0.1; |
| Map<MetadataType, MetadataComponent> originalMetadata = collector.finalizeMetadata(partitioner, bfFpChance, 0); |
| |
| MetadataSerializer serializer = new MetadataSerializer(); |
| // Serialize to tmp file |
| File statsFile = File.createTempFile(Component.STATS.name, null); |
| try (DataOutputStreamPlus out = new BufferedDataOutputStreamPlus(new FileOutputStream(statsFile))) |
| { |
| serializer.serialize(originalMetadata, out); |
| } |
| |
| Descriptor desc = new Descriptor( statsFile.getParentFile(), "", "", 0, Descriptor.Type.FINAL); |
| 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)); |
| } |
| } |
| } |
| } |