com.glaf.core.jdbc.datasource.DynamicDataSource.java Source code

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Here is the source code for com.glaf.core.jdbc.datasource.DynamicDataSource.java

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/*
 * 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 com.glaf.core.jdbc.datasource;

import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;

import com.glaf.core.config.Environment;
import com.glaf.core.config.SystemProperties;
import com.glaf.core.jdbc.connection.ConnectionProvider;
import com.glaf.core.jdbc.connection.ConnectionProviderFactory;
import com.glaf.core.util.Constants;
import com.glaf.core.util.PropertiesUtils;

public class DynamicDataSource extends AbstractRoutingDataSource {
    protected final static Log logger = LogFactory.getLog(DynamicDataSource.class);

    private static ConcurrentMap<Object, Object> targetDataSources = new ConcurrentHashMap<Object, Object>();

    private static Object defaultTargetDataSource;

    public DynamicDataSource() {

    }

    @Override
    public void afterPropertiesSet() {
        try {
            String path = null;
            String deploymentSystemName = SystemProperties.getDeploymentSystemName();
            if (deploymentSystemName != null && deploymentSystemName.length() > 0) {
                path = SystemProperties.getConfigRootPath() + Constants.DEPLOYMENT_JDBC_PATH + deploymentSystemName
                        + "/jdbc/";
            } else {
                path = SystemProperties.getConfigRootPath() + "/conf/jdbc/";
            }
            String filename = path + Environment.getCurrentSystemName() + ".jdbc.properties";
            Properties props = PropertiesUtils.loadFilePathResource(filename);
            if (props != null) {
                ConnectionProvider provider = ConnectionProviderFactory
                        .createProvider(Environment.getCurrentSystemName(), props);
                targetDataSources.put(Environment.getCurrentSystemName(), provider.getDataSource());
                defaultTargetDataSource = provider.getDataSource();
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            logger.error(ex);
        }
        setDefaultTargetDataSource(defaultTargetDataSource);
        setTargetDataSources(targetDataSources);
        super.afterPropertiesSet();
    }

    @Override
    protected synchronized Object determineCurrentLookupKey() {
        return Environment.getCurrentSystemName();
    }

}