/*******************************************************************************
 * Copyright (c) 2008, 2010 VMware Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   VMware Inc. - initial contribution
 *******************************************************************************/

package org.eclipse.virgo.kernel.config.internal;

import java.io.IOException;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;

import org.eclipse.virgo.nano.serviceability.NonNull;
import org.osgi.service.cm.Configuration;
import org.osgi.service.cm.ConfigurationAdmin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class ConfigurationAdminConfigurationInfo implements ConfigurationInfo {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    private final ConfigurationAdmin configurationAdmin;

    private final String pid;

    public ConfigurationAdminConfigurationInfo(@NonNull ConfigurationAdmin configurationAdmin, String pid) {
        this.configurationAdmin = configurationAdmin;
        this.pid = pid;
    }

    public String getPid() {
        return this.pid;
    }

    public Map<String, String> getProperties() {
        try {
            Configuration configuration = configurationAdmin.getConfiguration(this.pid, null);
            Map<String, String> properties = new HashMap<String, String>();

            @SuppressWarnings("unchecked")
            Dictionary<String, Object> dictionary = configuration.getProperties();

            if (dictionary != null) {
                Enumeration<String> keys = dictionary.keys();
                while (keys.hasMoreElements()) {
                    String key = keys.nextElement();
                    String value = (String)dictionary.get(key);
                    properties.put(key, value);
                }
            }
            return properties;
        } catch (IOException e) {
            logger.warn("Unable to get configuration for {}", this.pid);
        }
        return null;
    }

}