MasterSlaveDataSourceFactory.java

/*
 * Copyright 2014 mango.jfaster.org
 *
 * The Mango 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.jfaster.mango.datasource;

import javax.sql.DataSource;
import java.util.List;
import java.util.Random;

/**
 * 主从分离数据源工厂
 *
 * @author ash
 */
public class MasterSlaveDataSourceFactory extends AbstractDataSourceFactory {

  private DataSource master;
  private List<DataSource> slaves;
  private final Random random = new Random();

  public MasterSlaveDataSourceFactory() {
  }

  public MasterSlaveDataSourceFactory(DataSource master, List<DataSource> slaves) {
    this.master = master;
    this.slaves = slaves;
  }

  public MasterSlaveDataSourceFactory(String name, DataSource master, List<DataSource> slaves) {
    super(name);
    this.master = master;
    this.slaves = slaves;
  }

  @Override
  public DataSource getMasterDataSource() {
    return master;
  }

  @Override
  public DataSource getSlaveDataSource(Class<?> daoClass) {
    return slaves.get(random.nextInt(slaves.size()));
  }

  public DataSource getMaster() {
    return master;
  }

  public void setMaster(DataSource master) {
    this.master = master;
  }

  public List<DataSource> getSlaves() {
    return slaves;
  }

  public void setSlaves(List<DataSource> slaves) {
    this.slaves = slaves;
  }

}