/*
 * 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.pulsar.common.naming;

import java.util.regex.Matcher;
import java.util.regex.Pattern;
import lombok.experimental.UtilityClass;

/**
 */
@UtilityClass
public class NamedEntity {

    // allowed characters for property, namespace, cluster and topic names are
    // alphanumeric (a-zA-Z_0-9) and these special chars -=:.
    // % is allowed as part of valid URL encoding
    public static final Pattern NAMED_ENTITY_PATTERN = Pattern.compile("^[-=:.\\w]*$");

    public static void checkName(String name) throws IllegalArgumentException {
        if (!isAllowed(name)) {
            throw new IllegalArgumentException("Invalid named entity: " + name);
        }
    }

    public static boolean isAllowed(String name) {
        Matcher m = NAMED_ENTITY_PATTERN.matcher(name);
        return m.matches();
    }
}