/*
* Licensed 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 com.facebook.presto.cassandra;
import com.facebook.presto.spi.SchemaNotFoundException;
import com.facebook.presto.spi.TableNotFoundException;
import com.google.common.collect.ImmutableList;
import com.google.common.util.concurrent.ListeningExecutorService;
import io.airlift.units.Duration;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.util.concurrent.TimeUnit;
import static com.facebook.presto.cassandra.MockCassandraSession.BAD_SCHEMA;
import static com.facebook.presto.cassandra.MockCassandraSession.TEST_SCHEMA;
import static com.facebook.presto.cassandra.MockCassandraSession.TEST_TABLE;
import static com.google.common.util.concurrent.MoreExecutors.listeningDecorator;
import static io.airlift.concurrent.Threads.daemonThreadsNamed;
import static java.util.concurrent.Executors.newCachedThreadPool;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;
@Test(singleThreaded = true)
public class TestCachingCassandraSchemaProvider
{
private static final String CONNECTOR_ID = "test-cassandra";
private MockCassandraSession mockSession;
private CachingCassandraSchemaProvider schemaProvider;
@BeforeMethod
public void setUp()
throws Exception
{
mockSession = new MockCassandraSession(CONNECTOR_ID, new CassandraClientConfig());
ListeningExecutorService executor = listeningDecorator(newCachedThreadPool(daemonThreadsNamed("test-%s")));
schemaProvider = new CachingCassandraSchemaProvider(
CONNECTOR_ID,
mockSession,
executor,
new Duration(5, TimeUnit.MINUTES),
new Duration(1, TimeUnit.MINUTES));
}
@Test
public void testGetAllDatabases()
throws Exception
{
assertEquals(mockSession.getAccessCount(), 0);
assertEquals(schemaProvider.getAllSchemas(), ImmutableList.of(TEST_SCHEMA));
assertEquals(mockSession.getAccessCount(), 1);
assertEquals(schemaProvider.getAllSchemas(), ImmutableList.of(TEST_SCHEMA));
assertEquals(mockSession.getAccessCount(), 1);
schemaProvider.flushCache();
assertEquals(schemaProvider.getAllSchemas(), ImmutableList.of(TEST_SCHEMA));
assertEquals(mockSession.getAccessCount(), 2);
}
@Test
public void testGetAllTable()
throws Exception
{
assertEquals(mockSession.getAccessCount(), 0);
assertEquals(schemaProvider.getAllTables(TEST_SCHEMA), ImmutableList.of(TEST_TABLE));
assertEquals(mockSession.getAccessCount(), 2);
assertEquals(schemaProvider.getAllTables(TEST_SCHEMA), ImmutableList.of(TEST_TABLE));
assertEquals(mockSession.getAccessCount(), 2);
schemaProvider.flushCache();
assertEquals(schemaProvider.getAllTables(TEST_SCHEMA), ImmutableList.of(TEST_TABLE));
assertEquals(mockSession.getAccessCount(), 4);
}
@Test(expectedExceptions = SchemaNotFoundException.class)
public void testInvalidDbGetAllTAbles()
throws Exception
{
schemaProvider.getAllTables(BAD_SCHEMA);
}
@Test
public void testGetTable()
throws Exception
{
CassandraTableHandle tableHandle = new CassandraTableHandle(CONNECTOR_ID, TEST_SCHEMA, TEST_TABLE);
assertEquals(mockSession.getAccessCount(), 0);
assertNotNull(schemaProvider.getTable(tableHandle));
assertEquals(mockSession.getAccessCount(), 1);
assertNotNull(schemaProvider.getTable(tableHandle));
assertEquals(mockSession.getAccessCount(), 1);
schemaProvider.flushCache();
assertNotNull(schemaProvider.getTable(tableHandle));
assertEquals(mockSession.getAccessCount(), 2);
}
@Test(expectedExceptions = TableNotFoundException.class)
public void testInvalidDbGetTable()
throws Exception
{
CassandraTableHandle tableHandle = new CassandraTableHandle(CONNECTOR_ID, BAD_SCHEMA, TEST_TABLE);
schemaProvider.getTable(tableHandle);
}
@Test
public void testGetPartitions()
throws Exception
{
CassandraTableHandle tableHandle = new CassandraTableHandle(CONNECTOR_ID, TEST_SCHEMA, TEST_TABLE);
assertEquals(mockSession.getAccessCount(), 0);
CassandraTable table = schemaProvider.getTable(tableHandle);
assertNotNull(table);
String expectedList = "[column1 = 'testpartition1', column1 = 'testpartition2']";
assertEquals(mockSession.getAccessCount(), 1);
assertEquals(expectedList, schemaProvider.getAllPartitions(table).toString());
assertEquals(mockSession.getAccessCount(), 2);
assertEquals(expectedList, schemaProvider.getAllPartitions(table).toString());
assertEquals(mockSession.getAccessCount(), 2);
schemaProvider.flushCache();
assertEquals(expectedList, schemaProvider.getAllPartitions(table).toString());
assertEquals(mockSession.getAccessCount(), 3);
}
@Test
public void testNoCacheExceptions()
throws Exception
{
// Throw exceptions on usage
mockSession.setThrowException(true);
try {
schemaProvider.getAllSchemas();
}
catch (RuntimeException ignored) {
}
assertEquals(mockSession.getAccessCount(), 1);
// Second try should hit the client again
try {
schemaProvider.getAllSchemas();
}
catch (RuntimeException ignored) {
}
assertEquals(mockSession.getAccessCount(), 2);
}
}