/*
* Copyright 2010-2013 Ning, Inc.
* Copyright 2014-2015 Groupon, Inc
* Copyright 2014-2015 The Billing Project, LLC
*
* The Billing Project 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.killbill.commons.embeddeddb.h2;
import java.io.IOException;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.sql.DataSource;
import org.h2.jdbcx.JdbcConnectionPool;
import org.h2.tools.Server;
import org.killbill.commons.embeddeddb.EmbeddedDB;
public class H2EmbeddedDB extends EmbeddedDB {
private final AtomicBoolean started = new AtomicBoolean(false);
private Server server;
private DataSource dataSource;
static {
try {
Class.forName("org.h2.Driver");
} catch (final ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
public H2EmbeddedDB() {
this(UUID.randomUUID().toString(), UUID.randomUUID().toString(), UUID.randomUUID().toString());
}
public H2EmbeddedDB(final String databaseName, final String username, final String password) {
this(databaseName, username, password, "jdbc:h2:mem:" + databaseName + ";MODE=MYSQL;DB_CLOSE_DELAY=-1;MVCC=true");
}
public H2EmbeddedDB(final String databaseName, final String username, final String password, final String jdbcConnectionString) {
super(databaseName, username, password, jdbcConnectionString);
}
@Override
public DBEngine getDBEngine() {
return DBEngine.H2;
}
@Override
public void initialize() throws IOException {
}
@Override
public void start() throws IOException {
if (started.get()) {
throw new IOException("H2 is already running: " + jdbcConnectionString);
}
createDataSource();
try {
// Start a web server for debugging (http://127.0.0.1:8082/)
server = Server.createWebServer(new String[]{}).start();
started.set(true);
logger.info(String.format("H2 started on http://127.0.0.1:8082. JDBC=%s, Username=%s, Password=%s",
getJdbcConnectionString(), getUsername(), getPassword()));
} catch (final SQLException e) {
throw new IOException(e);
}
refreshTableNames();
}
@Override
public void refreshTableNames() throws IOException {
final String query = String.format("select table_name from information_schema.tables where table_catalog = '%s' and table_type = 'TABLE';", databaseName);
try {
executeQuery(query, new ResultSetJob() {
@Override
public void work(final ResultSet resultSet) throws SQLException {
allTables.clear();
while (resultSet.next()) {
allTables.add(resultSet.getString(1));
}
}
});
} catch (final SQLException e) {
throw new IOException(e);
}
}
protected void createDataSource() throws IOException {
if (useConnectionPooling()) {
dataSource = createHikariDataSource();
} else {
final JdbcConnectionPool jdbcConnectionPool = JdbcConnectionPool.create(jdbcConnectionString, username, password);
// Default is 10, set it to 30 to match the default for org.killbill.dao.maxActive
jdbcConnectionPool.setMaxConnections(30);
dataSource = jdbcConnectionPool;
}
}
@Override
public DataSource getDataSource() throws IOException {
if (!started.get()) {
throw new IOException("H2 is not running");
}
return dataSource;
}
@Override
public void stop() throws IOException {
if (!started.get()) {
throw new IOException("H2 is not running");
}
super.stop();
if (dataSource instanceof JdbcConnectionPool) {
((JdbcConnectionPool) dataSource).dispose();
}
if (server != null) {
server.stop();
}
logger.info(String.format("H2 stopped on http://127.0.0.1:8082. JDBC=%s, Username=%s, Password=%s",
getJdbcConnectionString(), getUsername(), getPassword()));
}
@Override
public String getCmdLineConnectionString() {
return "open " + server.getURL();
}
}