/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.rdb.sharding.jdbc;
import com.dangdang.ddframe.rdb.sharding.api.HintManager;
import com.dangdang.ddframe.rdb.sharding.api.MasterSlaveDataSourceFactory;
import com.dangdang.ddframe.rdb.sharding.fixture.TestDataSource;
import com.dangdang.ddframe.rdb.sharding.hint.HintManagerHolder;
import com.dangdang.ddframe.rdb.sharding.parser.result.router.SQLStatementType;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
import java.util.Collections;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
public final class MasterSlaveDataSourceTest {
private DataSource masterDataSource = new TestDataSource("test_ds_master");
private DataSource slaveDataSource = new TestDataSource("test_ds_slave");
private MasterSlaveDataSource masterSlaveDataSource = new MasterSlaveDataSource("test_ds", masterDataSource, Collections.singletonList(slaveDataSource));
@Before
@After
public void reset() {
HintManagerHolder.clear();
MasterSlaveDataSource.resetDMLFlag();
}
@Test
public void assertGetDataSourceForDML() {
assertThat(masterSlaveDataSource.getDataSource(SQLStatementType.INSERT), is(masterDataSource));
}
@Test
public void assertGetDataSourceForDQL() {
assertThat(masterSlaveDataSource.getDataSource(SQLStatementType.SELECT), is(slaveDataSource));
}
@Test
public void assertGetDataSourceForDMLAndDQL() {
assertThat(masterSlaveDataSource.getDataSource(SQLStatementType.INSERT), is(masterDataSource));
assertThat(masterSlaveDataSource.getDataSource(SQLStatementType.SELECT), is(masterDataSource));
}
@Test
public void assertGetDataSourceForHintToMasterOnly() {
HintManager hintManager = HintManager.getInstance();
hintManager.setMasterRouteOnly();
assertThat(masterSlaveDataSource.getDataSource(SQLStatementType.SELECT), is(masterDataSource));
hintManager.close();
}
@Test(expected = IllegalStateException.class)
public void assertGetDatabaseProductNameWhenDataBaseProductNameDifferent() throws SQLException {
DataSource masterDataSource = mock(DataSource.class);
DataSource slaveDataSource = mock(DataSource.class);
Connection masterConnection = mockConnection("MySQL");
Connection slaveConnection = mockConnection("H2");
when(masterDataSource.getConnection()).thenReturn(masterConnection);
when(slaveDataSource.getConnection()).thenReturn(slaveConnection);
try {
((MasterSlaveDataSource) MasterSlaveDataSourceFactory.createDataSource("ds", masterDataSource, slaveDataSource)).getDatabaseProductName();
} finally {
verify(masterConnection).close();
verify(slaveConnection).close();
}
}
@Test
public void assertGetDatabaseProductName() throws SQLException {
DataSource masterDataSource = mock(DataSource.class);
DataSource slaveDataSource1 = mock(DataSource.class);
DataSource slaveDataSource2 = mock(DataSource.class);
Connection masterConnection = mockConnection("H2");
Connection slaveConnection1 = mockConnection("H2");
Connection slaveConnection2 = mockConnection("H2");
when(masterDataSource.getConnection()).thenReturn(masterConnection);
when(slaveDataSource1.getConnection()).thenReturn(slaveConnection1);
when(slaveDataSource2.getConnection()).thenReturn(slaveConnection2);
assertThat(((MasterSlaveDataSource) MasterSlaveDataSourceFactory.createDataSource("ds", masterDataSource, slaveDataSource1, slaveDataSource2)).getDatabaseProductName(), is("H2"));
verify(masterConnection).close();
verify(slaveConnection1).close();
verify(slaveConnection2).close();
}
private Connection mockConnection(final String dataBaseProductName) throws SQLException {
Connection result = mock(Connection.class);
DatabaseMetaData databaseMetaData = mock(DatabaseMetaData.class);
when(result.getMetaData()).thenReturn(databaseMetaData);
when(databaseMetaData.getDatabaseProductName()).thenReturn(dataBaseProductName);
return result;
}
@Test(expected = UnsupportedOperationException.class)
public void assertGetConnection() throws SQLException {
masterSlaveDataSource.getConnection();
}
@Test
public void assertResetDMLFlag() {
assertThat(masterSlaveDataSource.getDataSource(SQLStatementType.INSERT), is(masterDataSource));
assertThat(masterSlaveDataSource.getDataSource(SQLStatementType.SELECT), is(masterDataSource));
MasterSlaveDataSource.resetDMLFlag();
assertThat(masterSlaveDataSource.getDataSource(SQLStatementType.SELECT), is(slaveDataSource));
}
}