fineract-provider/src/main/java/org/apache/fineract/infrastructure/core/service/RoutingDataSource.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF 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.apache.fineract.infrastructure.core.service;

import java.sql.Connection;
import java.sql.SQLException;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.datasource.AbstractDataSource;
import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
import org.springframework.stereotype.Service;

/**
 * Based on springs {@link AbstractRoutingDataSource} idea, this is a
 * {@link DataSource} that routes or delegates to another data source depending
 * on the tenant details passed in the request.
 * 
 * The tenant details are process earlier and stored in a {@link ThreadLocal}.
 * 
 * The {@link RoutingDataSourceService} is responsible for returning the
 * appropriate {@link DataSource} for the tenant of this request.
 */
@Service(value = "routingDataSource")
public class RoutingDataSource extends AbstractDataSource {

    @Autowired
    private RoutingDataSourceServiceFactory dataSourceServiceFactory;

    @Override
    public Connection getConnection() throws SQLException {
        return determineTargetDataSource().getConnection();
    }

    private DataSource determineTargetDataSource() {
        return this.dataSourceServiceFactory.determineDataSourceService().retrieveDataSource();
    }

    @Override
    public Connection getConnection(final String username, final String password) throws SQLException {
        return determineTargetDataSource().getConnection(username, password);
    }
}