edu.berkeley.compbio.ncbitaxonomy.service.NcbiTaxonomyServicesContextFactory.java Source code

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Here is the source code for edu.berkeley.compbio.ncbitaxonomy.service.NcbiTaxonomyServicesContextFactory.java

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/*
 * Copyright (c) 2008-2013  David Soergel  <dev@davidsoergel.com>
 * Licensed under the Apache License, Version 2.0
 * http://www.apache.org/licenses/LICENSE-2.0
 */

package edu.berkeley.compbio.ncbitaxonomy.service;

import com.davidsoergel.dsutils.PropertiesUtils;
import edu.berkeley.compbio.ncbitaxonomy.NcbiTaxonomyRuntimeException;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.core.io.ClassPathResource;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Map;
import java.util.Properties;

/**
 * @author <a href="mailto:dev@davidsoergel.com">David Soergel</a>
 * @version $Id$
 */
public class NcbiTaxonomyServicesContextFactory {
    private static final Logger logger = Logger.getLogger(NcbiTaxonomyServicesContextFactory.class);

    public static ApplicationContext makeNcbiTaxonomyServicesContext() throws IOException {

        File propsFile = PropertiesUtils.findPropertiesFile("NCBI_TAXONOMY_SERVICE_PROPERTIES", ".ncbitaxonomy",
                "service.properties");

        logger.debug("Using properties file: " + propsFile);
        Properties p = new Properties();
        FileInputStream is = null;
        try {
            is = new FileInputStream(propsFile);
            p.load(is);
        } finally {
            is.close();
        }
        String dbName = (String) p.get("default");

        Map<String, Properties> databases = PropertiesUtils.splitPeriodDelimitedProperties(p);

        GenericApplicationContext ctx = new GenericApplicationContext();
        XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(ctx);
        xmlReader.loadBeanDefinitions(new ClassPathResource("ncbitaxonomyclient.xml"));

        PropertyPlaceholderConfigurer cfg = new PropertyPlaceholderConfigurer();
        Properties properties = databases.get(dbName);

        if (properties == null) {
            logger.error("Service definition not found: " + dbName);
            logger.error("Valid names: " + StringUtils.join(databases.keySet().iterator(), ", "));
            throw new NcbiTaxonomyRuntimeException("Database definition not found: " + dbName);
        }

        cfg.setProperties(properties);
        ctx.addBeanFactoryPostProcessor(cfg);

        ctx.refresh();

        // add a shutdown hook for the above context...
        ctx.registerShutdownHook();

        return ctx;
    }
}