001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *      http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.oozie.util.db;
020
021import java.sql.Connection;
022import java.sql.SQLException;
023import java.util.Properties;
024import com.google.common.base.Predicate;
025
026public class FailingHSQLDBDriverWrapper extends org.hsqldb.jdbcDriver {
027
028    public static final String USE_FAILING_DRIVER = "oozie.sql.use.failing.driver";
029    public static final int DEFAULT_FAILURE_PERCENT = 5;
030    private int failurePercent;
031
032    public FailingHSQLDBDriverWrapper () {
033        this(DEFAULT_FAILURE_PERCENT);
034    }
035
036    public FailingHSQLDBDriverWrapper(int failurePercent) {
037        this.failurePercent = failurePercent;
038    }
039
040    public Connection connect(final String url,
041                              final Properties info) throws SQLException {
042        if (Boolean.parseBoolean(System.getProperty(USE_FAILING_DRIVER, "false"))) {
043            return new FailingConnectionWrapper(super.connect(url, info), failurePercent, FailingDBHelperForTest.dbPredicate);
044        }
045        return super.connect(url, info);
046    }
047}