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/*
 * 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.kafka.common.errors;

/**
 * Exception thrown due to a request that illegally refers to the same resource twice
 * (for example, trying to both create and delete the same SCRAM credential for a particular user in a single request).
 */
public class DuplicateResourceException extends ApiException {

    private static final long serialVersionUID = 1L;

    private final String resource;

    /**
     * Constructor
     *
     * @param message the exception's message
     */
    public DuplicateResourceException(String message) {
        this(null, message);
    }

    /**
     *
     * @param message the exception's message
     * @param cause the exception's cause
     */
    public DuplicateResourceException(String message, Throwable cause) {
        this(null, message, cause);
    }

    /**
     * Constructor
     *
     * @param resource the (potentially null) resource that was referred to twice
     * @param message the exception's message
     */
    public DuplicateResourceException(String resource, String message) {
        super(message);
        this.resource = resource;
    }

    /**
     * Constructor
     *
     * @param resource the (potentially null) resource that was referred to twice
     * @param message the exception's message
     * @param cause the exception's cause
     */
    public DuplicateResourceException(String resource, String message, Throwable cause) {
        super(message, cause);
        this.resource = resource;
    }

    /**
     *
     * @return the (potentially null) resource that was referred to twice
     */
    public String resource() {
        return this.resource;
    }
}