001/*
002 * Copyright 2022-2026 Revetware LLC.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.soklet;
018
019import javax.annotation.concurrent.NotThreadSafe;
020
021/**
022 * Indicates that a verification key cannot yet be removed because a sealing
023 * reservation still uses it.
024 * <p>
025 * This is the transient protection-control failure: wait for reservations to
026 * drain and retry removal. Other protection-control failures use
027 * {@link IllegalArgumentException} or {@link IllegalStateException}.
028 *
029 * @author <a href="https://www.revetkn.com">Mark Allen</a>
030 */
031@NotThreadSafe
032public final class McpProtectionKeyInUseException extends RuntimeException {
033        private static final long serialVersionUID = 1L;
034
035        McpProtectionKeyInUseException() {
036                super("An MCP protection key is still in use.");
037        }
038}