/* dCache - http://www.dcache.org/
 *
 * Copyright (C) 2014 Deutsches Elektronen-Synchrotron
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.dcache.services.httpd.util;

import org.springframework.context.ApplicationContextInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.PropertiesPropertySource;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import java.util.Properties;

/**
 * Injects dCache service configuration into Spring ApplicationContext environment.
 */
public class HttpdApplicationContextInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext>
{
    @Override
    public void initialize(ConfigurableApplicationContext applicationContext) {
        ConfigurableEnvironment environment = applicationContext.getEnvironment();
        try {
            Context initialContext = new InitialContext();
            Properties properties = (Properties) initialContext.lookup("java:comp/env/jndiArgs");
            environment.getPropertySources().addFirst(new PropertiesPropertySource("environment", properties));
        } catch (NamingException e) {
            throw new IllegalStateException("Service configuration not found in JNDI.", e);
        }
    }
}