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/*
 * Copyright 1999-2015 dangdang.com.
 * 
 * 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 io.shardingjdbc.spring.datasource;

import io.shardingjdbc.core.api.algorithm.masterslave.MasterSlaveLoadBalanceAlgorithm;
import io.shardingjdbc.core.api.algorithm.masterslave.MasterSlaveLoadBalanceAlgorithmType;
import io.shardingjdbc.core.jdbc.core.datasource.MasterSlaveDataSource;
import io.shardingjdbc.core.rule.MasterSlaveRule;
import lombok.Setter;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.Map;
import java.util.Map.Entry;

/**
 * Master-slave datasource for spring namespace.
 *
 * @author zhangliang
 */
public class SpringMasterSlaveDataSource extends MasterSlaveDataSource implements ApplicationContextAware {
    
    @Setter
    private ApplicationContext applicationContext;
    
    public SpringMasterSlaveDataSource(final String name, final String masterDataSourceName,
                                       final DataSource masterDataSource, final Map slaveDataSourceMap) throws SQLException {
        super(new MasterSlaveRule(name, masterDataSourceName, masterDataSource, slaveDataSourceMap));
    }
    
    public SpringMasterSlaveDataSource(final String name, final String masterDataSourceName,
                                       final DataSource masterDataSource, final Map slaveDataSourceMap, final MasterSlaveLoadBalanceAlgorithm strategy) throws SQLException {
        super(new MasterSlaveRule(name, masterDataSourceName, masterDataSource, slaveDataSourceMap, strategy));
    }
    
    public SpringMasterSlaveDataSource(final String name, final String masterDataSourceName, final DataSource masterDataSource, 
                                       final Map slaveDataSourceMap, final MasterSlaveLoadBalanceAlgorithmType strategyType) throws SQLException {
        super(new MasterSlaveRule(name, masterDataSourceName, masterDataSource, slaveDataSourceMap, strategyType.getAlgorithm()));
    }
    
    @Override
    public void renew(final MasterSlaveRule masterSlaveRule) throws SQLException {
        DataSourceBeanUtil.createDataSourceBean(applicationContext, masterSlaveRule.getMasterDataSourceName(), masterSlaveRule.getMasterDataSource());
        for (Entry entry : masterSlaveRule.getSlaveDataSourceMap().entrySet()) {
            DataSourceBeanUtil.createDataSourceBean(applicationContext, entry.getKey(), entry.getValue());
        }
        super.renew(masterSlaveRule);
    }
}