001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.eclipse.aether.named.support;
020
021/**
022 * Exception thrown when lock upgrade attempted that we do not support. This exception when used within {@link Retry}
023 * helper should never be reattempted, hence is marked with {@link Retry.DoNotRetry} marker.
024 *
025 * @since 1.9.13
026 */
027public final class LockUpgradeNotSupportedException extends RuntimeException implements Retry.DoNotRetry {
028    /**
029     * Constructor for case, when current thread attempts lock upgrade on given lock instance.
030     */
031    public LockUpgradeNotSupportedException(NamedLockSupport namedLock) {
032        super("Thread " + Thread.currentThread().getName()
033                + " already holds shared lock for '" + namedLock.key()
034                + "', but asks for exclusive lock; lock upgrade not supported");
035    }
036}