/**
* Copyright 1999-2011 Alibaba Group
*
* 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.alibaba.cobar.client.datasources;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.sql.DataSource;
import org.apache.commons.lang.Validate;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy;
import com.alibaba.cobar.client.datasources.ha.IHADataSourceCreator;
import com.alibaba.cobar.client.datasources.ha.NonHADataSourceCreator;
import com.alibaba.cobar.client.datasources.ha.support.IDataSourcePostProcessor;
import com.alibaba.cobar.client.support.utils.CollectionUtils;
/**
* StrongRefDataSourceLocator is mainly responsible for assembling data sources
* mapping relationship as per data source definitions in spring container.
*
* @author fujohnwang
*/
public class DefaultCobarDataSourceService implements ICobarDataSourceService, InitializingBean {
private Set<CobarDataSourceDescriptor> dataSourceDescriptors = new HashSet<CobarDataSourceDescriptor>();
private List<IDataSourcePostProcessor> dataSourcePostProcessor = new ArrayList<IDataSourcePostProcessor>();
private IHADataSourceCreator haDataSourceCreator;
private Map<String, DataSource> dataSources = new HashMap<String, DataSource>();
public Map<String, DataSource> getDataSources() {
return dataSources;
}
public void afterPropertiesSet() throws Exception {
if (getHaDataSourceCreator() == null) {
setHaDataSourceCreator(new NonHADataSourceCreator());
}
if (CollectionUtils.isEmpty(dataSourceDescriptors)) {
return;
}
for (CobarDataSourceDescriptor descriptor : getDataSourceDescriptors()) {
Validate.notEmpty(descriptor.getIdentity());
Validate.notNull(descriptor.getTargetDataSource());
DataSource dataSourceToUse = descriptor.getTargetDataSource();
if (descriptor.getStandbyDataSource() != null) {
dataSourceToUse = getHaDataSourceCreator().createHADataSource(descriptor);
if (CollectionUtils.isNotEmpty(dataSourcePostProcessor)) {
for (IDataSourcePostProcessor pp : dataSourcePostProcessor) {
dataSourceToUse = pp.postProcess(dataSourceToUse);
}
}
}
dataSources.put(descriptor.getIdentity(), new LazyConnectionDataSourceProxy(
dataSourceToUse));
}
}
public void setDataSourceDescriptors(Set<CobarDataSourceDescriptor> dataSourceDescriptors) {
this.dataSourceDescriptors = dataSourceDescriptors;
}
public Set<CobarDataSourceDescriptor> getDataSourceDescriptors() {
return dataSourceDescriptors;
}
public void setHaDataSourceCreator(IHADataSourceCreator haDataSourceCreator) {
this.haDataSourceCreator = haDataSourceCreator;
}
public IHADataSourceCreator getHaDataSourceCreator() {
return haDataSourceCreator;
}
}