com.sharksharding.core.shard.SharkDatasourceGroup.java Source code

Introduction

Here is the source code for com.sharksharding.core.shard.SharkDatasourceGroup.java

Source

/*
 * Copyright 2015-2101 gaoxianglong
 *
 * 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 com.sharksharding.core.shard;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;

/**
 * shark???
 * 
 * ??Spring??AbstractRoutingDataSource,?????????,
 * ???
 * 
 * @author gaoxianglong
 * 
 * @version 1.3.5
 */
public class SharkDatasourceGroup extends AbstractRoutingDataSource implements DataSource {
    private DataSourceHolder dataSourceHolder;
    private static Logger logger = LoggerFactory.getLogger(SharkDatasourceGroup.class);

    private SharkDatasourceGroup() {
        dataSourceHolder = SharkDataSourceHolder.getDataSourceHolder();
    }

    @Override
    protected Object determineCurrentLookupKey() {
        int index = -1;
        if (null != dataSourceHolder) {
            /* ?ThreadLocal?? */
            index = dataSourceHolder.getIndex();
            logger.info("datasource index-->" + index);
        }
        return index;
    }
}