io.trino.benchto.driver.jdbc.MultipleDataSourcesConfiguration Maven / Gradle / Ivy

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/*
 * 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.trino.benchto.driver.jdbc;

import io.trino.benchto.driver.utils.PropertiesUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.context.EnvironmentAware;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

import javax.sql.DataSource;

import java.util.Map;

import static java.util.stream.Collectors.toMap;

@Configuration
public class MultipleDataSourcesConfiguration
        implements BeanFactoryPostProcessor, EnvironmentAware
{
    private MultipleDataSourcesProperties multipleDataSourcesProperties;

    @Override
    public void setEnvironment(Environment environment)
    {
        ConfigurableEnvironment configurableEnvironment = ConfigurableEnvironment.class.cast(environment);
        multipleDataSourcesProperties = PropertiesUtils.resolveEnvironmentProperties(configurableEnvironment, MultipleDataSourcesProperties.class);
    }

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
            throws BeansException
    {
        Map dataSources = createDeclaredDataSources();
        register(beanFactory, dataSources);
    }

    private Map createDeclaredDataSources()
    {
        return multipleDataSourcesProperties.getDataSources()
                .entrySet().stream()
                .collect(toMap(Map.Entry::getKey, (entry) -> createDataSource(entry.getValue())));
    }

    private DataSource createDataSource(DataSourceProperties properties)
    {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName(properties.determineDriverClassName());
        dataSource.setUrl(properties.determineUrl());
        dataSource.setUsername(properties.determineUsername());
        dataSource.setPassword(properties.determinePassword());
        return dataSource;
    }

    private void register(ConfigurableListableBeanFactory beanFactory, Map dataSources)
    {
        for (Map.Entry entry : dataSources.entrySet()) {
            beanFactory.registerSingleton(entry.getKey(), entry.getValue());
        }
    }
}