flink-clients/src/main/java/org/apache/flink/client/ClientUtils.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.flink.client;

import java.net.InetSocketAddress;
import java.net.URI;
import java.net.URISyntaxException;

/**
 * A class that provides some utility methods.
 */
public class ClientUtils {
	/**
	 * Utility method that converts a string of the form "host:port" into an {@link InetSocketAddress}.
	 * The returned InetSocketAddress may be unresolved!
	 *
	 * @param hostport The "host:port" string.
	 * @return The converted InetSocketAddress.
	 */
	public static InetSocketAddress parseHostPortAddress(String hostport) {
		// from http://stackoverflow.com/questions/2345063/java-common-way-to-validate-and-convert-hostport-to-inetsocketaddress
		URI uri;
		try {
			uri = new URI("my://" + hostport);
		} catch (URISyntaxException e) {
			throw new RuntimeException("Could not identify hostname and port in '" + hostport + "'.", e);
		}
		String host = uri.getHost();
		int port = uri.getPort();
		if (host == null || port == -1) {
			throw new RuntimeException("Could not identify hostname and port in '" + hostport + "'.");
		}
		return new InetSocketAddress(host, port);
	}
}