/*
 * 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.runtime.util;

/** Common utils for ResourceManager. */
public class ResourceManagerUtils {

    /**
     * Parse the port from the webInterfaceUrl.
     *
     * @param webInterfaceUrl The web interface url to be parsed
     * @return the parsed rest port or -1 if failed
     */
    public static Integer parseRestBindPortFromWebInterfaceUrl(String webInterfaceUrl) {
        if (webInterfaceUrl != null) {
            final int lastColon = webInterfaceUrl.lastIndexOf(':');

            if (lastColon == -1) {
                return -1;
            } else {
                try {
                    return Integer.parseInt(webInterfaceUrl.substring(lastColon + 1));
                } catch (NumberFormatException e) {
                    return -1;
                }
            }
        } else {
            return -1;
        }
    }
}
