| /* |
| * Copyright © 2012-2014 Cask Data, Inc. |
| * |
| * Licensed 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 co.cask.tephra; |
| |
| /** |
| * Retries transaction execution when transaction fails with {@link TransactionConflictException}. |
| */ |
| public class RetryOnConflictStrategy implements RetryStrategy { |
| private final int maxRetries; |
| private final long retryDelay; |
| |
| public RetryOnConflictStrategy(int maxRetries, long retryDelay) { |
| this.maxRetries = maxRetries; |
| this.retryDelay = retryDelay; |
| } |
| |
| @Override |
| public long nextRetry(TransactionFailureException reason, int failureCount) { |
| if (reason instanceof TransactionConflictException) { |
| return failureCount > maxRetries ? -1 : retryDelay; |
| } else { |
| return -1; |
| } |
| } |
| } |