| /* |
| * 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.jclouds; |
| |
| import com.google.common.annotations.Beta; |
| |
| /** |
| * Provides a backup value to replace an earlier exception. |
| * |
| * @param <V> |
| * the result type of the backup value |
| * |
| * @since 1.6 |
| */ |
| @Beta |
| public interface Fallback<V> { |
| /** |
| * The exception is provided so that the {@code Fallback} implementation can |
| * conditionally determine whether to propagate the exception or to attempt |
| * to recover. |
| * |
| * @param t |
| * the exception that made the call fail. |
| */ |
| V createOrPropagate(Throwable t) throws Exception; |
| } |