/*
* 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.tools;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
import java.util.concurrent.TimeUnit;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.db.*;
import org.apache.cassandra.db.composites.*;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.Schema;
import org.apache.cassandra.db.marshal.AbstractType;
import org.apache.cassandra.db.marshal.BytesType;
import org.apache.cassandra.dht.IPartitioner;
import org.apache.cassandra.io.sstable.SSTableWriter;
import org.apache.cassandra.serializers.MarshalException;
import org.apache.cassandra.service.ActiveRepairService;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.JVMStabilityInspector;
import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.JsonToken;
import org.codehaus.jackson.map.MappingJsonFactory;
import org.codehaus.jackson.type.TypeReference;
/**
* Create SSTables from JSON input
*/
public class SSTableImport
{
private static final String KEYSPACE_OPTION = "K";
private static final String COLUMN_FAMILY_OPTION = "c";
private static final String KEY_COUNT_OPTION = "n";
private static final String IS_SORTED_OPTION = "s";
private static final Options options = new Options();
private static CommandLine cmd;
private Integer keyCountToImport;
private final boolean isSorted;
private static final JsonFactory factory = new MappingJsonFactory().configure(
JsonParser.Feature.INTERN_FIELD_NAMES, false);
static
{
Option optKeyspace = new Option(KEYSPACE_OPTION, true, "Keyspace name.");
optKeyspace.setRequired(true);
options.addOption(optKeyspace);
Option optColfamily = new Option(COLUMN_FAMILY_OPTION, true, "Column Family name.");
optColfamily.setRequired(true);
options.addOption(optColfamily);
options.addOption(new Option(KEY_COUNT_OPTION, true, "Number of keys to import (Optional)."));
options.addOption(new Option(IS_SORTED_OPTION, false, "Assume JSON file as already sorted (e.g. created by sstable2json tool) (Optional)."));
}
private static class JsonColumn<T>
{
private ByteBuffer name;
private ByteBuffer value;
private long timestamp;
private String kind;
// Expiring columns
private int ttl;
private int localExpirationTime;
// Counter columns
private long timestampOfLastDelete;
public JsonColumn(T json, CFMetaData meta)
{
if (json instanceof List)
{
CellNameType comparator = meta.comparator;
List fields = (List<?>) json;
assert fields.size() >= 3 : "Cell definition should have at least 3";
name = stringAsType((String) fields.get(0), comparator.asAbstractType());
timestamp = (Long) fields.get(2);
kind = "";
if (fields.size() > 3)
{
kind = (String) fields.get(3);
if (isExpiring())
{
ttl = (Integer) fields.get(4);
localExpirationTime = (Integer) fields.get(5);
}
else if (isCounter())
{
timestampOfLastDelete = (long) ((Integer) fields.get(4));
}
else if (isRangeTombstone())
{
localExpirationTime = (Integer) fields.get(4);
}
}
if (isDeleted())
{
value = ByteBufferUtil.bytes((Integer) fields.get(1));
}
else if (isRangeTombstone())
{
value = stringAsType((String) fields.get(1), comparator.asAbstractType());
}
else
{
assert meta.isCQL3Table() || name.hasRemaining() : "Cell name should not be empty";
value = stringAsType((String) fields.get(1),
meta.getValueValidator(name.hasRemaining()
? comparator.cellFromByteBuffer(name)
: meta.comparator.rowMarker(Composites.EMPTY)));
}
}
}
public boolean isDeleted()
{
return kind.equals("d");
}
public boolean isExpiring()
{
return kind.equals("e");
}
public boolean isCounter()
{
return kind.equals("c");
}
public boolean isRangeTombstone()
{
return kind.equals("t");
}
public ByteBuffer getName()
{
return name.duplicate();
}
public ByteBuffer getValue()
{
return value.duplicate();
}
}
public SSTableImport()
{
this(null, false);
}
public SSTableImport(boolean isSorted)
{
this(null, isSorted);
}
public SSTableImport(Integer keyCountToImport, boolean isSorted)
{
this.keyCountToImport = keyCountToImport;
this.isSorted = isSorted;
}
/**
* Add columns to a column family.
*
* @param row the columns associated with a row
* @param cfamily the column family to add columns to
*/
private void addColumnsToCF(List<?> row, ColumnFamily cfamily)
{
CFMetaData cfm = cfamily.metadata();
assert cfm != null;
for (Object c : row)
{
JsonColumn col = new JsonColumn<List>((List) c, cfm);
if (col.isRangeTombstone())
{
Composite start = cfm.comparator.fromByteBuffer(col.getName());
Composite end = cfm.comparator.fromByteBuffer(col.getValue());
cfamily.addAtom(new RangeTombstone(start, end, col.timestamp, col.localExpirationTime));
continue;
}
assert cfm.isCQL3Table() || col.getName().hasRemaining() : "Cell name should not be empty";
CellName cname = col.getName().hasRemaining() ? cfm.comparator.cellFromByteBuffer(col.getName())
: cfm.comparator.rowMarker(Composites.EMPTY);
if (col.isExpiring())
{
cfamily.addColumn(new BufferExpiringCell(cname, col.getValue(), col.timestamp, col.ttl, col.localExpirationTime));
}
else if (col.isCounter())
{
cfamily.addColumn(new BufferCounterCell(cname, col.getValue(), col.timestamp, col.timestampOfLastDelete));
}
else if (col.isDeleted())
{
cfamily.addTombstone(cname, col.getValue(), col.timestamp);
}
else if (col.isRangeTombstone())
{
CellName end = cfm.comparator.cellFromByteBuffer(col.getValue());
cfamily.addAtom(new RangeTombstone(cname, end, col.timestamp, col.localExpirationTime));
}
// cql3 row marker, see CASSANDRA-5852
else if (cname.isEmpty())
{
cfamily.addColumn(cfm.comparator.rowMarker(Composites.EMPTY), col.getValue(), col.timestamp);
}
else
{
cfamily.addColumn(cname, col.getValue(), col.timestamp);
}
}
}
private void parseMeta(Map<?, ?> map, ColumnFamily cf, ByteBuffer superColumnName)
{
// deletionInfo is the only metadata we store for now
if (map.containsKey("deletionInfo"))
{
Map<?, ?> unparsedDeletionInfo = (Map<?, ?>) map.get("deletionInfo");
Number number = (Number) unparsedDeletionInfo.get("markedForDeleteAt");
long markedForDeleteAt = number instanceof Long ? (Long) number : number.longValue();
int localDeletionTime = (Integer) unparsedDeletionInfo.get("localDeletionTime");
if (superColumnName == null)
cf.setDeletionInfo(new DeletionInfo(markedForDeleteAt, localDeletionTime));
else
cf.addAtom(new RangeTombstone(SuperColumns.startOf(superColumnName), SuperColumns.endOf(superColumnName), markedForDeleteAt, localDeletionTime));
}
}
/**
* Convert a JSON formatted file to an SSTable.
*
* @param jsonFile the file containing JSON formatted data
* @param keyspace keyspace the data belongs to
* @param cf column family the data belongs to
* @param ssTablePath file to write the SSTable to
*
* @throws IOException for errors reading/writing input/output
*/
public int importJson(String jsonFile, String keyspace, String cf, String ssTablePath) throws IOException
{
ColumnFamily columnFamily = ArrayBackedSortedColumns.factory.create(keyspace, cf);
IPartitioner partitioner = DatabaseDescriptor.getPartitioner();
int importedKeys = (isSorted) ? importSorted(jsonFile, columnFamily, ssTablePath, partitioner)
: importUnsorted(jsonFile, columnFamily, ssTablePath, partitioner);
if (importedKeys != -1)
System.out.printf("%d keys imported successfully.%n", importedKeys);
return importedKeys;
}
private int importUnsorted(String jsonFile, ColumnFamily columnFamily, String ssTablePath, IPartitioner partitioner) throws IOException
{
int importedKeys = 0;
long start = System.nanoTime();
JsonParser parser = getParser(jsonFile);
Object[] data = parser.readValueAs(new TypeReference<Object[]>(){});
keyCountToImport = (keyCountToImport == null) ? data.length : keyCountToImport;
SSTableWriter writer = new SSTableWriter(ssTablePath, keyCountToImport, ActiveRepairService.UNREPAIRED_SSTABLE);
System.out.printf("Importing %s keys...%n", keyCountToImport);
// sort by dk representation, but hold onto the hex version
SortedMap<DecoratedKey,Map<?, ?>> decoratedKeys = new TreeMap<DecoratedKey,Map<?, ?>>();
for (Object row : data)
{
Map<?,?> rowAsMap = (Map<?, ?>)row;
decoratedKeys.put(partitioner.decorateKey(getKeyValidator(columnFamily).fromString((String) rowAsMap.get("key"))), rowAsMap);
}
for (Map.Entry<DecoratedKey, Map<?, ?>> row : decoratedKeys.entrySet())
{
if (row.getValue().containsKey("metadata"))
{
parseMeta((Map<?, ?>) row.getValue().get("metadata"), columnFamily, null);
}
Object columns = row.getValue().get("cells");
addColumnsToCF((List<?>) columns, columnFamily);
writer.append(row.getKey(), columnFamily);
columnFamily.clear();
importedKeys++;
long current = System.nanoTime();
if (TimeUnit.NANOSECONDS.toSeconds(current - start) >= 5) // 5 secs.
{
System.out.printf("Currently imported %d keys.%n", importedKeys);
start = current;
}
if (keyCountToImport == importedKeys)
break;
}
writer.closeAndOpenReader();
return importedKeys;
}
private int importSorted(String jsonFile, ColumnFamily columnFamily, String ssTablePath,
IPartitioner partitioner) throws IOException
{
int importedKeys = 0; // already imported keys count
long start = System.nanoTime();
JsonParser parser = getParser(jsonFile);
if (keyCountToImport == null)
{
keyCountToImport = 0;
System.out.println("Counting keys to import, please wait... (NOTE: to skip this use -n <num_keys>)");
parser.nextToken(); // START_ARRAY
while (parser.nextToken() != null)
{
parser.skipChildren();
if (parser.getCurrentToken() == JsonToken.END_ARRAY)
break;
keyCountToImport++;
}
}
System.out.printf("Importing %s keys...%n", keyCountToImport);
parser = getParser(jsonFile); // renewing parser
SSTableWriter writer = new SSTableWriter(ssTablePath, keyCountToImport, ActiveRepairService.UNREPAIRED_SSTABLE);
int lineNumber = 1;
DecoratedKey prevStoredKey = null;
parser.nextToken(); // START_ARRAY
while (parser.nextToken() != null)
{
String key = parser.getCurrentName();
Map<?, ?> row = parser.readValueAs(new TypeReference<Map<?, ?>>(){});
DecoratedKey currentKey = partitioner.decorateKey(getKeyValidator(columnFamily).fromString((String) row.get("key")));
if (row.containsKey("metadata"))
parseMeta((Map<?, ?>) row.get("metadata"), columnFamily, null);
addColumnsToCF((List<?>) row.get("cells"), columnFamily);
if (prevStoredKey != null && prevStoredKey.compareTo(currentKey) != -1)
{
System.err
.printf("Line %d: Key %s is greater than previous, collection is not sorted properly. Aborting import. You might need to delete SSTables manually.%n",
lineNumber, key);
return -1;
}
// saving decorated key
writer.append(currentKey, columnFamily);
columnFamily.clear();
prevStoredKey = currentKey;
importedKeys++;
lineNumber++;
long current = System.nanoTime();
if (TimeUnit.NANOSECONDS.toSeconds(current - start) >= 5) // 5 secs.
{
System.out.printf("Currently imported %d keys.%n", importedKeys);
start = current;
}
if (keyCountToImport == importedKeys)
break;
}
writer.closeAndOpenReader();
return importedKeys;
}
/**
* Get key validator for column family
* @param columnFamily column family instance
* @return key validator for given column family
*/
private AbstractType<?> getKeyValidator(ColumnFamily columnFamily) {
// this is a fix to support backward compatibility
// which allows to skip the current key validator
// please, take a look onto CASSANDRA-7498 for more details
if ("true".equals(System.getProperty("skip.key.validator", "false"))) {
return BytesType.instance;
}
return columnFamily.metadata().getKeyValidator();
}
/**
* Get JsonParser object for file
* @param fileName name of the file
* @return json parser instance for given file
* @throws IOException if any I/O error.
*/
private JsonParser getParser(String fileName) throws IOException
{
return factory.createJsonParser(new File(fileName));
}
/**
* Converts JSON to an SSTable file. JSON input can either be a file specified
* using an optional command line argument, or supplied on standard in.
*
* @param args command line arguments
* @throws IOException on failure to open/read/write files or output streams
* @throws ParseException on failure to parse JSON input
* @throws ConfigurationException on configuration error.
*/
public static void main(String[] args) throws ParseException, ConfigurationException
{
CommandLineParser parser = new PosixParser();
try
{
cmd = parser.parse(options, args);
}
catch (org.apache.commons.cli.ParseException e)
{
System.err.println(e.getMessage());
printProgramUsage();
System.exit(1);
}
if (cmd.getArgs().length != 2)
{
printProgramUsage();
System.exit(1);
}
String json = cmd.getArgs()[0];
String ssTable = cmd.getArgs()[1];
String keyspace = cmd.getOptionValue(KEYSPACE_OPTION);
String cfamily = cmd.getOptionValue(COLUMN_FAMILY_OPTION);
Integer keyCountToImport = null;
boolean isSorted = false;
if (cmd.hasOption(KEY_COUNT_OPTION))
{
keyCountToImport = Integer.valueOf(cmd.getOptionValue(KEY_COUNT_OPTION));
}
if (cmd.hasOption(IS_SORTED_OPTION))
{
isSorted = true;
}
DatabaseDescriptor.loadSchemas(false);
if (Schema.instance.getNonSystemKeyspaces().size() < 1)
{
String msg = "no non-system keyspaces are defined";
System.err.println(msg);
throw new ConfigurationException(msg);
}
try
{
new SSTableImport(keyCountToImport, isSorted).importJson(json, keyspace, cfamily, ssTable);
}
catch (Exception e)
{
JVMStabilityInspector.inspectThrowable(e);
e.printStackTrace();
System.err.println("ERROR: " + e.getMessage());
System.exit(-1);
}
System.exit(0);
}
private static void printProgramUsage()
{
System.out.printf("Usage: %s -s -K <keyspace> -c <column_family> -n <num_keys> <json> <sstable>%n%n",
SSTableImport.class.getName());
System.out.println("Options:");
for (Object o : options.getOptions())
{
Option opt = (Option) o;
System.out.println(" -" +opt.getOpt() + " - " + opt.getDescription());
}
}
/**
* Convert a string to bytes (ByteBuffer) according to type
* @param content string to convert
* @param type type to use for conversion
* @return byte buffer representation of the given string
*/
private static ByteBuffer stringAsType(String content, AbstractType<?> type)
{
try
{
return type.fromString(content);
}
catch (MarshalException e)
{
throw new RuntimeException(e.getMessage());
}
}
}