io.shardingjdbc.core.rule.MasterSlaveRule Maven / Gradle / Ivy
/*
* 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.core.rule;
import io.shardingjdbc.core.api.algorithm.masterslave.MasterSlaveLoadBalanceAlgorithm;
import io.shardingjdbc.core.api.algorithm.masterslave.MasterSlaveLoadBalanceAlgorithmType;
import com.google.common.base.Preconditions;
import lombok.Getter;
import javax.sql.DataSource;
import java.util.Map;
/**
* Databases and tables master-slave rule configuration.
*
* @author zhangliang
*/
@Getter
public final class MasterSlaveRule {
private final String name;
private final String masterDataSourceName;
private final DataSource masterDataSource;
private final Map slaveDataSourceMap;
private final MasterSlaveLoadBalanceAlgorithm strategy;
public MasterSlaveRule(final String name, final String masterDataSourceName,
final DataSource masterDataSource, final Map slaveDataSourceMap) {
this(name, masterDataSourceName, masterDataSource, slaveDataSourceMap, null);
}
public MasterSlaveRule(final String name, final String masterDataSourceName,
final DataSource masterDataSource, final Map slaveDataSourceMap, final MasterSlaveLoadBalanceAlgorithm strategy) {
Preconditions.checkNotNull(name);
Preconditions.checkNotNull(masterDataSourceName);
Preconditions.checkNotNull(masterDataSource);
Preconditions.checkNotNull(slaveDataSourceMap);
Preconditions.checkState(!slaveDataSourceMap.isEmpty());
this.name = name;
this.masterDataSourceName = masterDataSourceName;
this.masterDataSource = masterDataSource;
this.slaveDataSourceMap = slaveDataSourceMap;
this.strategy = null == strategy ? MasterSlaveLoadBalanceAlgorithmType.getDefaultAlgorithmType().getAlgorithm() : strategy;
}
}