InsteonHubProxyFactory.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * 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
 */
package org.openhab.binding.insteonhub.internal;

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

import org.apache.commons.lang.StringUtils;
import org.openhab.binding.insteonhub.internal.hardware.InsteonHubProxy;
import org.openhab.binding.insteonhub.internal.hardware.api.serial.InsteonHubSerialProxy;

/**
 * Creates InsteonHubProxy instances
 *
 * @author Eric Thill
 * @since 1.4.0
 */
public class InsteonHubProxyFactory {

    public static final String CONFIG_KEY_HOST = "host";
    public static final String CONFIG_KEY_PORT = "port";

    public static Map<String, InsteonHubProxy> createInstances(Dictionary<String, ?> config) {
        Map<String, InsteonHubProxy> proxies = new HashMap<String, InsteonHubProxy>();
        // parse all configured receivers
        // ( insteonhub:<hubid>.host=10.0.0.2 )
        Enumeration<String> keys = config.keys();
        while (keys.hasMoreElements()) {
            String key = keys.nextElement();
            if (key.endsWith(CONFIG_KEY_HOST)) {
                // parse host
                String host = (String) config.get(key);
                int separatorIdx = key.indexOf('.');
                String hubId, keyPrefix;
                if (separatorIdx == -1) {
                    // no prefix/hubid => one hub => use default hub ID
                    hubId = InsteonHubBinding.DEFAULT_HUB_ID;
                    keyPrefix = "";
                } else {
                    // prefix => use it as the hub ID
                    hubId = key.substring(0, separatorIdx);
                    keyPrefix = hubId + ".";
                }
                String portStr = (String) config.get(keyPrefix + CONFIG_KEY_PORT);
                int port = StringUtils.isBlank(portStr) ? InsteonHubSerialProxy.DEFAULT_PORT
                        : Integer.parseInt(config.get(keyPrefix + CONFIG_KEY_PORT).toString());
                // Create proxy, and add it to map
                InsteonHubProxy proxy = new InsteonHubSerialProxy(host, port);
                proxies.put(hubId, proxy);
            }
        }
        return proxies;
    }
}