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* 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;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;
import com.google.common.collect.ImmutableSet;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.db.*;
import org.apache.cassandra.db.marshal.UTF8Type;
import org.apache.cassandra.dht.Murmur3Partitioner;
import org.apache.cassandra.io.sstable.Component;
import org.apache.cassandra.io.sstable.Descriptor;
import org.apache.cassandra.io.sstable.IndexSummary;
import org.apache.cassandra.io.sstable.format.SSTableReader;
import org.apache.cassandra.io.sstable.metadata.MetadataCollector;
import org.apache.cassandra.io.sstable.metadata.MetadataType;
import org.apache.cassandra.io.sstable.metadata.StatsMetadata;
import org.apache.cassandra.io.util.BufferedSegmentedFile;
import org.apache.cassandra.io.util.ChannelProxy;
import org.apache.cassandra.io.util.FileUtils;
import org.apache.cassandra.io.util.Memory;
import org.apache.cassandra.io.util.RandomAccessReader;
import org.apache.cassandra.io.util.SegmentedFile;
import org.apache.cassandra.schema.CachingParams;
import org.apache.cassandra.schema.KeyspaceMetadata;
import org.apache.cassandra.schema.KeyspaceParams;
import org.apache.cassandra.utils.AlwaysPresentFilter;
import org.apache.cassandra.utils.ByteBufferUtil;
public class MockSchema
{
static
{
Memory offsets = Memory.allocate(4);
offsets.setInt(0, 0);
indexSummary = new IndexSummary(Murmur3Partitioner.instance, offsets, 0, Memory.allocate(4), 0, 0, 0, 1);
}
private static final AtomicInteger id = new AtomicInteger();
public static final Keyspace ks = Keyspace.mockKS(KeyspaceMetadata.create("mockks", KeyspaceParams.simpleTransient(1)));
public static final IndexSummary indexSummary;
private static final SegmentedFile segmentedFile = new BufferedSegmentedFile(new ChannelProxy(temp("mocksegmentedfile")), RandomAccessReader.DEFAULT_BUFFER_SIZE, 0);
public static Memtable memtable(ColumnFamilyStore cfs)
{
return new Memtable(cfs.metadata);
}
public static SSTableReader sstable(int generation, ColumnFamilyStore cfs)
{
return sstable(generation, false, cfs);
}
public static SSTableReader sstable(int generation, boolean keepRef, ColumnFamilyStore cfs)
{
return sstable(generation, 0, keepRef, cfs);
}
public static SSTableReader sstable(int generation, int size, ColumnFamilyStore cfs)
{
return sstable(generation, size, false, cfs);
}
public static SSTableReader sstable(int generation, int size, boolean keepRef, ColumnFamilyStore cfs)
{
Descriptor descriptor = new Descriptor(cfs.getDirectories().getDirectoryForNewSSTables(),
cfs.keyspace.getName(),
cfs.getColumnFamilyName(),
generation);
Set<Component> components = ImmutableSet.of(Component.DATA, Component.PRIMARY_INDEX, Component.FILTER, Component.TOC);
for (Component component : components)
{
File file = new File(descriptor.filenameFor(component));
try
{
file.createNewFile();
}
catch (IOException e)
{
}
}
if (size > 0)
{
try
{
File file = new File(descriptor.filenameFor(Component.DATA));
try (RandomAccessFile raf = new RandomAccessFile(file, "rw"))
{
raf.setLength(size);
}
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
SerializationHeader header = SerializationHeader.make(cfs.metadata, Collections.emptyList());
StatsMetadata metadata = (StatsMetadata) new MetadataCollector(cfs.metadata.comparator)
.finalizeMetadata(cfs.metadata.partitioner.getClass().getCanonicalName(), 0.01f, -1, header)
.get(MetadataType.STATS);
SSTableReader reader = SSTableReader.internalOpen(descriptor, components, cfs.metadata,
segmentedFile.sharedCopy(), segmentedFile.sharedCopy(), indexSummary.sharedCopy(),
new AlwaysPresentFilter(), 1L, metadata, SSTableReader.OpenReason.NORMAL, header);
reader.first = reader.last = readerBounds(generation);
if (!keepRef)
reader.selfRef().release();
return reader;
}
public static ColumnFamilyStore newCFS()
{
return newCFS(ks.getName());
}
public static ColumnFamilyStore newCFS(String ksname)
{
String cfname = "mockcf" + (id.incrementAndGet());
CFMetaData metadata = newCFMetaData(ksname, cfname);
return new ColumnFamilyStore(ks, cfname, 0, metadata, new Directories(metadata), false, false);
}
public static CFMetaData newCFMetaData(String ksname, String cfname)
{
CFMetaData metadata = CFMetaData.Builder.create(ksname, cfname)
.addPartitionKey("key", UTF8Type.instance)
.addClusteringColumn("col", UTF8Type.instance)
.addRegularColumn("value", UTF8Type.instance)
.withPartitioner(Murmur3Partitioner.instance)
.build();
metadata.caching(CachingParams.CACHE_NOTHING);
return metadata;
}
public static BufferDecoratedKey readerBounds(int generation)
{
return new BufferDecoratedKey(new Murmur3Partitioner.LongToken(generation), ByteBufferUtil.EMPTY_BYTE_BUFFER);
}
private static File temp(String id)
{
try
{
File file = File.createTempFile(id, "tmp");
file.deleteOnExit();
return file;
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
public static void cleanup()
{
// clean up data directory which are stored as data directory/keyspace/data files
for (String dirName : DatabaseDescriptor.getAllDataFileLocations())
{
File dir = new File(dirName);
if (!dir.exists())
continue;
String[] children = dir.list();
for (String child : children)
FileUtils.deleteRecursive(new File(dir, child));
}
}
}