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* 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,
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* See the License for the specific language governing permissions and
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package org.apache.cassandra.db;
import org.junit.BeforeClass;
import org.junit.Test;
import org.apache.cassandra.Util;
import org.apache.cassandra.schema.ColumnMetadata;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.db.rows.Row;
import org.apache.cassandra.db.context.CounterContext;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.exceptions.WriteTimeoutException;
import org.apache.cassandra.schema.KeyspaceParams;
import org.apache.cassandra.utils.ByteBufferUtil;
import static org.junit.Assert.assertEquals;
public class CounterMutationTest
{
private static final String KEYSPACE1 = "CounterMutationTest";
private static final String CF1 = "Counter1";
private static final String CF2 = "Counter2";
@BeforeClass
public static void defineSchema() throws ConfigurationException
{
SchemaLoader.prepareServer();
SchemaLoader.createKeyspace(KEYSPACE1,
KeyspaceParams.simple(1),
SchemaLoader.counterCFMD(KEYSPACE1, CF1),
SchemaLoader.counterCFMD(KEYSPACE1, CF2));
}
@Test
public void testSingleCell() throws WriteTimeoutException
{
ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF1);
cfs.truncateBlocking();
ColumnMetadata cDef = cfs.metadata().getColumn(ByteBufferUtil.bytes("val"));
// Do the initial update (+1)
addAndCheck(cfs, 1, 1);
// Make another increment (+2)
addAndCheck(cfs, 2, 3);
// Decrement to 0 (-3)
addAndCheck(cfs, -3, 0);
}
private void addAndCheck(ColumnFamilyStore cfs, long toAdd, long expected)
{
ColumnMetadata cDef = cfs.metadata().getColumn(ByteBufferUtil.bytes("val"));
Mutation m = new RowUpdateBuilder(cfs.metadata(), 5, "key1").clustering("cc").add("val", toAdd).build();
new CounterMutation(m, ConsistencyLevel.ONE).apply();
Row row = Util.getOnlyRow(Util.cmd(cfs).includeRow("cc").columns("val").build());
assertEquals(expected, CounterContext.instance().total(row.getCell(cDef).value()));
}
@Test
public void testTwoCells() throws WriteTimeoutException
{
ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF1);
cfs.truncateBlocking();
// Do the initial update (+1, -1)
addTwoAndCheck(cfs, 1L, 1L, -1L, -1L);
// Make another increment (+2, -2)
addTwoAndCheck(cfs, 2L, 3L, -2L, -3L);
// Decrement to 0 (-3, +3)
addTwoAndCheck(cfs, -3L, 0L, 3L, 0L);
}
private void addTwoAndCheck(ColumnFamilyStore cfs, long addOne, long expectedOne, long addTwo, long expectedTwo)
{
ColumnMetadata cDefOne = cfs.metadata().getColumn(ByteBufferUtil.bytes("val"));
ColumnMetadata cDefTwo = cfs.metadata().getColumn(ByteBufferUtil.bytes("val2"));
Mutation m = new RowUpdateBuilder(cfs.metadata(), 5, "key1")
.clustering("cc")
.add("val", addOne)
.add("val2", addTwo)
.build();
new CounterMutation(m, ConsistencyLevel.ONE).apply();
Row row = Util.getOnlyRow(Util.cmd(cfs).includeRow("cc").columns("val", "val2").build());
assertEquals(expectedOne, CounterContext.instance().total(row.getCell(cDefOne).value()));
assertEquals(expectedTwo, CounterContext.instance().total(row.getCell(cDefTwo).value()));
}
@Test
public void testBatch() throws WriteTimeoutException
{
ColumnFamilyStore cfsOne = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF1);
ColumnFamilyStore cfsTwo = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF2);
cfsOne.truncateBlocking();
cfsTwo.truncateBlocking();
// Do the update (+1, -1), (+2, -2)
Mutation batch = new Mutation(KEYSPACE1, Util.dk("key1"));
batch.add(new RowUpdateBuilder(cfsOne.metadata(), 5, "key1")
.clustering("cc")
.add("val", 1L)
.add("val2", -1L)
.build().get(cfsOne.metadata()));
batch.add(new RowUpdateBuilder(cfsTwo.metadata(), 5, "key1")
.clustering("cc")
.add("val", 2L)
.add("val2", -2L)
.build().get(cfsTwo.metadata()));
new CounterMutation(batch, ConsistencyLevel.ONE).apply();
ColumnMetadata c1cfs1 = cfsOne.metadata().getColumn(ByteBufferUtil.bytes("val"));
ColumnMetadata c2cfs1 = cfsOne.metadata().getColumn(ByteBufferUtil.bytes("val2"));
Row row = Util.getOnlyRow(Util.cmd(cfsOne).includeRow("cc").columns("val", "val2").build());
assertEquals(1L, CounterContext.instance().total(row.getCell(c1cfs1).value()));
assertEquals(-1L, CounterContext.instance().total(row.getCell(c2cfs1).value()));
ColumnMetadata c1cfs2 = cfsTwo.metadata().getColumn(ByteBufferUtil.bytes("val"));
ColumnMetadata c2cfs2 = cfsTwo.metadata().getColumn(ByteBufferUtil.bytes("val2"));
row = Util.getOnlyRow(Util.cmd(cfsTwo).includeRow("cc").columns("val", "val2").build());
assertEquals(2L, CounterContext.instance().total(row.getCell(c1cfs2).value()));
assertEquals(-2L, CounterContext.instance().total(row.getCell(c2cfs2).value()));
// Check the caches, separately
CBuilder cb = CBuilder.create(cfsOne.metadata().comparator);
cb.add("cc");
assertEquals(1L, cfsOne.getCachedCounter(Util.dk("key1").getKey(), cb.build(), c1cfs1, null).count);
assertEquals(-1L, cfsOne.getCachedCounter(Util.dk("key1").getKey(), cb.build(), c2cfs1, null).count);
assertEquals(2L, cfsTwo.getCachedCounter(Util.dk("key1").getKey(), cb.build(), c1cfs2, null).count);
assertEquals(-2L, cfsTwo.getCachedCounter(Util.dk("key1").getKey(), cb.build(), c2cfs2, null).count);
}
@Test
public void testDeletes() throws WriteTimeoutException
{
ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF1);
cfs.truncateBlocking();
ColumnMetadata cOne = cfs.metadata().getColumn(ByteBufferUtil.bytes("val"));
ColumnMetadata cTwo = cfs.metadata().getColumn(ByteBufferUtil.bytes("val2"));
// Do the initial update (+1, -1)
new CounterMutation(
new RowUpdateBuilder(cfs.metadata(), 5, "key1")
.clustering("cc")
.add("val", 1L)
.add("val2", -1L)
.build(),
ConsistencyLevel.ONE).apply();
Row row = Util.getOnlyRow(Util.cmd(cfs).includeRow("cc").columns("val", "val2").build());
assertEquals(1L, CounterContext.instance().total(row.getCell(cOne).value()));
assertEquals(-1L, CounterContext.instance().total(row.getCell(cTwo).value()));
// Remove the first counter, increment the second counter
new CounterMutation(
new RowUpdateBuilder(cfs.metadata(), 5, "key1")
.clustering("cc")
.delete(cOne)
.add("val2", -5L)
.build(),
ConsistencyLevel.ONE).apply();
row = Util.getOnlyRow(Util.cmd(cfs).includeRow("cc").columns("val", "val2").build());
assertEquals(null, row.getCell(cOne));
assertEquals(-6L, CounterContext.instance().total(row.getCell(cTwo).value()));
// Increment the first counter, make sure it's still shadowed by the tombstone
new CounterMutation(
new RowUpdateBuilder(cfs.metadata(), 5, "key1")
.clustering("cc")
.add("val", 1L)
.build(),
ConsistencyLevel.ONE).apply();
row = Util.getOnlyRow(Util.cmd(cfs).includeRow("cc").columns("val", "val2").build());
assertEquals(null, row.getCell(cOne));
// Get rid of the complete partition
RowUpdateBuilder.deleteRow(cfs.metadata(), 6, "key1", "cc").applyUnsafe();
Util.assertEmpty(Util.cmd(cfs).includeRow("cc").columns("val", "val2").build());
// Increment both counters, ensure that both stay dead
new CounterMutation(
new RowUpdateBuilder(cfs.metadata(), 6, "key1")
.clustering("cc")
.add("val", 1L)
.add("val2", 1L)
.build(),
ConsistencyLevel.ONE).apply();
Util.assertEmpty(Util.cmd(cfs).includeRow("cc").columns("val", "val2").build());
}
}