net.rubyeye.xmemcached.utils.AddrUtil Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of xmemcached Show documentation
Extreme performance modern memcached client for java
There is a newer version: 2.4.8
/**
 *Copyright [2009-2010] [dennis zhuang([email protected])]
 *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
 */
/**
 *Copyright [2009-2010] [dennis zhuang([email protected])]
 *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 net.rubyeye.xmemcached.utils;

import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * Convenience utilities for simplifying common address parsing.
 */
public class AddrUtil {

	/**
	 * Split a string in the form of
	 * "host1:port1,host2:port2 host3:port3,host4:port4" into a Map of
	 * InetSocketAddress instances suitable for instantiating a
	 * MemcachedClient,map's key is the main memcached node,and value is the
	 * standby node for main node. Note that colon-delimited IPv6 is also supported. For
	 * example: ::1:11211
	 * 
	 * @param s
	 * @return
	 */
	public static Map getAddressMap(
			String s) {
		if (s == null) {
			throw new NullPointerException("Null host list");
		}
		if (s.trim().equals("")) {
			throw new IllegalArgumentException("No hosts in list:  ``" + s
					+ "''");
		}
		Map result = new LinkedHashMap();
		for (String hosts : s.split(" ")) {
			String[] nodes = hosts.split(",");

			if (nodes.length < 1) {
				throw new IllegalArgumentException("Invalid server ``" + hosts
						+ "'' in list:  " + s);
			}
			String mainHost = nodes[0];
			InetSocketAddress mainAddress = getInetSocketAddress(s, mainHost);
			if (nodes.length >= 2) {
				InetSocketAddress standByAddress = getInetSocketAddress(s,
						nodes[1]);
				result.put(mainAddress, standByAddress);
			} else {
				result.put(mainAddress, null);
			}

		}
		assert !result.isEmpty() : "No addrs found";
		return result;
	}

	private static InetSocketAddress getInetSocketAddress(String s,
			String mainHost) {
		int finalColon = mainHost.lastIndexOf(':');
		if (finalColon < 1) {
			throw new IllegalArgumentException("Invalid server ``" + mainHost
					+ "'' in list:  " + s);

		}
		String hostPart = mainHost.substring(0, finalColon);
		String portNum = mainHost.substring(finalColon + 1);

		InetSocketAddress mainAddress = new InetSocketAddress(hostPart, Integer
				.parseInt(portNum));
		return mainAddress;
	}

	/**
	 * Split a string in the form of "host:port host2:port" into a List of
	 * InetSocketAddress instances suitable for instantiating a MemcachedClient.
	 * 
	 * Note that colon-delimited IPv6 is also supported. For example: ::1:11211
	 */
	public static List getAddresses(String s) {
		if (s == null) {
			throw new NullPointerException("Null host list");
		}
		if (s.trim().equals("")) {
			throw new IllegalArgumentException("No hosts in list:  ``" + s
					+ "''");
		}
		ArrayList addrs = new ArrayList();

		for (String hoststuff : s.split(" ")) {
			int finalColon = hoststuff.lastIndexOf(':');
			if (finalColon < 1) {
				throw new IllegalArgumentException("Invalid server ``"
						+ hoststuff + "'' in list:  " + s);

			}
			String hostPart = hoststuff.substring(0, finalColon);
			String portNum = hoststuff.substring(finalColon + 1);

			addrs
					.add(new InetSocketAddress(hostPart, Integer
							.parseInt(portNum)));
		}
		assert !addrs.isEmpty() : "No addrs found";
		return addrs;
	}

	public static InetSocketAddress getOneAddress(String server) {
		if (server == null) {
			throw new NullPointerException("Null host");
		}
		if (server.trim().equals("")) {
			throw new IllegalArgumentException("No hosts in:  ``" + server
					+ "''");
		}

		int finalColon = server.lastIndexOf(':');
		if (finalColon < 1) {
			throw new IllegalArgumentException("Invalid server ``" + server
					+ "''");

		}
		String hostPart = server.substring(0, finalColon);
		String portNum = server.substring(finalColon + 1);
		return new InetSocketAddress(hostPart, Integer.parseInt(portNum));
	}
}