package org.apache.cassandra;
/*
*
* 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.
*
*/
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import org.apache.cassandra.db.*;
import org.apache.cassandra.db.compaction.CompactionManager;
import org.apache.cassandra.db.columniterator.IdentityQueryFilter;
import org.apache.cassandra.db.filter.QueryFilter;
import org.apache.cassandra.db.filter.QueryPath;
import org.apache.cassandra.dht.*;
import org.apache.cassandra.gms.ApplicationState;
import org.apache.cassandra.gms.VersionedValue;
import org.apache.cassandra.io.sstable.Descriptor;
import org.apache.cassandra.io.sstable.SSTableReader;
import org.apache.cassandra.service.StorageService;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.NodeId;
import static org.junit.Assert.assertTrue;
public class Util
{
public static DecoratedKey dk(String key)
{
return StorageService.getPartitioner().decorateKey(ByteBufferUtil.bytes(key));
}
public static Column column(String name, String value, long timestamp)
{
return new Column(ByteBufferUtil.bytes(name), ByteBufferUtil.bytes(value), timestamp);
}
public static SuperColumn superColumn(ColumnFamily cf, String name, Column... columns)
{
SuperColumn sc = new SuperColumn(ByteBufferUtil.bytes(name), cf.metadata().comparator);
for (Column c : columns)
sc.addColumn(c);
return sc;
}
public static Token token(String key)
{
return StorageService.getPartitioner().getToken(ByteBufferUtil.bytes(key));
}
public static Range range(String left, String right)
{
return new Range(token(left), token(right));
}
public static Range range(IPartitioner p, String left, String right)
{
return new Range(p.getToken(ByteBufferUtil.bytes(left)), p.getToken(ByteBufferUtil.bytes(right)));
}
public static Bounds bounds(String left, String right)
{
return new Bounds(token(left), token(right));
}
public static void addMutation(RowMutation rm, String columnFamilyName, String superColumnName, long columnName, String value, long timestamp)
{
rm.add(new QueryPath(columnFamilyName, ByteBufferUtil.bytes(superColumnName), getBytes(columnName)), ByteBufferUtil.bytes(value), timestamp);
}
public static ByteBuffer getBytes(long v)
{
byte[] bytes = new byte[8];
ByteBuffer bb = ByteBuffer.wrap(bytes);
bb.putLong(v);
bb.rewind();
return bb;
}
public static List<Row> getRangeSlice(ColumnFamilyStore cfs) throws IOException, ExecutionException, InterruptedException
{
Token min = StorageService.getPartitioner().getMinimumToken();
return cfs.getRangeSlice(null,
new Bounds(min, min),
10000,
new IdentityQueryFilter());
}
/**
* Writes out a bunch of rows for a single column family.
*
* @param rows A group of RowMutations for the same table and column family.
* @return The ColumnFamilyStore that was used.
*/
public static ColumnFamilyStore writeColumnFamily(List<IMutation> rms) throws IOException, ExecutionException, InterruptedException
{
IMutation first = rms.get(0);
String tablename = first.getTable();
Integer cfid = first.getColumnFamilyIds().iterator().next();
for (IMutation rm : rms)
rm.apply();
ColumnFamilyStore store = Table.open(tablename).getColumnFamilyStore(cfid);
store.forceBlockingFlush();
return store;
}
public static ColumnFamily getColumnFamily(Table table, DecoratedKey key, String cfName) throws IOException
{
ColumnFamilyStore cfStore = table.getColumnFamilyStore(cfName);
assert cfStore != null : "Column family " + cfName + " has not been defined";
return cfStore.getColumnFamily(QueryFilter.getIdentityFilter(key, new QueryPath(cfName)));
}
public static byte[] concatByteArrays(byte[] first, byte[]... remaining)
{
int length = first.length;
for (byte[] array : remaining)
{
length += array.length;
}
byte[] result = new byte[length];
System.arraycopy(first, 0, result, 0, first.length);
int offset = first.length;
for (byte[] array : remaining)
{
System.arraycopy(array, 0, result, offset, array.length);
offset += array.length;
}
return result;
}
public static boolean equalsNodeId(NodeId n, ByteBuffer context, int offset)
{
return NodeId.wrap(context, context.position() + offset).equals(n);
}
public static ColumnFamily cloneAndRemoveDeleted(ColumnFamily cf, int gcBefore)
{
return ColumnFamilyStore.removeDeleted(cf.cloneMe(), gcBefore);
}
/**
* Creates initial set of nodes and tokens. Nodes are added to StorageService as 'normal'
*/
public static void createInitialRing(StorageService ss, IPartitioner partitioner, List<Token> endpointTokens,
List<Token> keyTokens, List<InetAddress> hosts, int howMany)
throws UnknownHostException
{
for (int i=0; i<howMany; i++)
{
endpointTokens.add(new BigIntegerToken(String.valueOf(10 * i)));
keyTokens.add(new BigIntegerToken(String.valueOf(10 * i + 5)));
}
for (int i=0; i<endpointTokens.size(); i++)
{
InetAddress ep = InetAddress.getByName("127.0.0." + String.valueOf(i + 1));
ss.onChange(ep, ApplicationState.STATUS, new VersionedValue.VersionedValueFactory(partitioner).normal(endpointTokens.get(i)));
hosts.add(ep);
}
// check that all nodes are in token metadata
for (int i=0; i<endpointTokens.size(); ++i)
assertTrue(ss.getTokenMetadata().isMember(hosts.get(i)));
}
public static Future<?> compactAll(ColumnFamilyStore cfs)
{
List<Descriptor> descriptors = new ArrayList<Descriptor>();
for (SSTableReader sstable : cfs.getSSTables())
descriptors.add(sstable.descriptor);
return CompactionManager.instance.submitUserDefined(cfs, descriptors, Integer.MAX_VALUE);
}
}