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* 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
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* KIND, either express or implied. See the License for the
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package org.apache.cassandra.tools;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintStream;
import java.util.Arrays;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.db.ColumnFamily;
import org.apache.cassandra.db.filter.NamesQueryFilter;
import org.apache.cassandra.db.filter.QueryPath;
import org.apache.cassandra.dht.IPartitioner;
import org.apache.cassandra.io.DataOutputBuffer;
import org.apache.cassandra.io.SSTableAccessor;
import org.apache.cassandra.io.SSTableReader;
import org.apache.cassandra.io.SSTableWriter;
import static org.apache.cassandra.Util.createTemporarySSTable;
import static org.apache.cassandra.utils.FBUtilities.hexToBytes;
import static org.junit.Assert.assertTrue;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.JSONValue;
import org.json.simple.parser.ParseException;
import org.junit.Test;
public class SSTableExportTest
{
@Test
public void testExportSimpleCf() throws IOException
{
File tempSS = createTemporarySSTable("Keyspace1", "Standard1");
ColumnFamily cfamily = ColumnFamily.create("Keyspace1", "Standard1");
IPartitioner<?> partitioner = DatabaseDescriptor.getPartitioner();
DataOutputBuffer dob = new DataOutputBuffer();
SSTableWriter writer = new SSTableWriter(tempSS.getPath(), 2, partitioner);
// Add rowA
cfamily.addColumn(new QueryPath("Standard1", null, "colA".getBytes()), "valA".getBytes(), 1, false);
ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
writer.append(partitioner.decorateKey("rowA"), dob);
dob.reset();
cfamily.clear();
// Add rowB
cfamily.addColumn(new QueryPath("Standard1", null, "colB".getBytes()), "valB".getBytes(), 1, false);
ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
writer.append(partitioner.decorateKey("rowB"), dob);
dob.reset();
cfamily.clear();
SSTableReader reader = writer.closeAndOpenReader(0);
// Export to JSON and verify
File tempJson = File.createTempFile("Standard1", ".json");
SSTableExport.export(reader, new PrintStream(tempJson.getPath()));
JSONObject json = (JSONObject)JSONValue.parse(new FileReader(tempJson));
JSONArray rowA = (JSONArray)json.get("rowA");
JSONArray colA = (JSONArray)rowA.get(0);
assert Arrays.equals(hexToBytes((String)colA.get(1)), "valA".getBytes());
JSONArray rowB = (JSONArray)json.get("rowB");
JSONArray colB = (JSONArray)rowB.get(0);
assert !(Boolean)colB.get(3);
}
@Test
public void testExportSuperCf() throws IOException
{
File tempSS = createTemporarySSTable("Keyspace1", "Super4");
ColumnFamily cfamily = ColumnFamily.create("Keyspace1", "Super4");
IPartitioner<?> partitioner = DatabaseDescriptor.getPartitioner();
DataOutputBuffer dob = new DataOutputBuffer();
SSTableWriter writer = new SSTableWriter(tempSS.getPath(), 2, partitioner);
// Add rowA
cfamily.addColumn(new QueryPath("Super4", "superA".getBytes(), "colA".getBytes()), "valA".getBytes(), 1, false);
ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
writer.append(partitioner.decorateKey("rowA"), dob);
dob.reset();
cfamily.clear();
// Add rowB
cfamily.addColumn(new QueryPath("Super4", "superB".getBytes(), "colB".getBytes()), "valB".getBytes(), 1, false);
ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
writer.append(partitioner.decorateKey("rowB"), dob);
dob.reset();
cfamily.clear();
SSTableReader reader = writer.closeAndOpenReader(0);
// Export to JSON and verify
File tempJson = File.createTempFile("Super4", ".json");
SSTableExport.export(reader, new PrintStream(tempJson.getPath()));
JSONObject json = (JSONObject)JSONValue.parse(new FileReader(tempJson));
JSONObject rowA = (JSONObject)json.get("rowA");
JSONObject superA = (JSONObject)rowA.get(cfamily.getComparator().getString("superA".getBytes()));
JSONArray subColumns = (JSONArray)superA.get("subColumns");
JSONArray colA = (JSONArray)subColumns.get(0);
assert Arrays.equals(hexToBytes((String)colA.get(1)), "valA".getBytes());
assert !(Boolean)colA.get(3);
}
@Test
public void testRoundTripStandardCf() throws IOException, ParseException
{
File tempSS = createTemporarySSTable("Keyspace1", "Standard1");
ColumnFamily cfamily = ColumnFamily.create("Keyspace1", "Standard1");
IPartitioner<?> partitioner = DatabaseDescriptor.getPartitioner();
DataOutputBuffer dob = new DataOutputBuffer();
SSTableWriter writer = new SSTableWriter(tempSS.getPath(), 2, partitioner);
// Add rowA
cfamily.addColumn(new QueryPath("Standard1", null, "name".getBytes()), "val".getBytes(), 1, false);
ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
writer.append(partitioner.decorateKey("rowA"), dob);
dob.reset();
cfamily.clear();
SSTableReader reader = writer.closeAndOpenReader(0);
// Export to JSON and verify
File tempJson = File.createTempFile("Standard1", ".json");
SSTableExport.export(reader, new PrintStream(tempJson.getPath()));
// Import JSON to another SSTable file
File tempSS2 = createTemporarySSTable("Keyspace1", "Standard1");
SSTableImport.importJson(tempJson.getPath(), "Keyspace1", "Standard1", tempSS2.getPath());
reader = SSTableAccessor.getSSTableReader(tempSS2.getPath(), DatabaseDescriptor.getPartitioner());
NamesQueryFilter qf = new NamesQueryFilter("rowA", new QueryPath("Standard1", null, null), "name".getBytes());
ColumnFamily cf = qf.getSSTableColumnIterator(reader).getColumnFamily();
assertTrue(cf != null);
assertTrue(Arrays.equals(cf.getColumn("name".getBytes()).value(), hexToBytes("76616c")));
}
}
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