| /* |
| * 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.seatunnel.common.utils; |
| |
| public class RetryUtils { |
| |
| /** |
| * Execute the given execution with retry |
| * |
| * @param execution execution to execute |
| * @param retryMaterial retry material, defined the condition to retry |
| * @param <T> result type |
| * @return result of execution |
| */ |
| public static <T> T retryWithException(Execution<T, Exception> execution, RetryMaterial retryMaterial) throws Exception { |
| final RetryCondition<Exception> retryCondition = retryMaterial.getRetryCondition(); |
| final int retryTimes = retryMaterial.getRetryTimes(); |
| |
| if (retryMaterial.getRetryTimes() < 0) { |
| throw new IllegalArgumentException("Retry times must be greater than 0"); |
| } |
| int i = 0; |
| do { |
| i++; |
| try { |
| return execution.execute(); |
| } catch (Exception e) { |
| if (retryCondition != null && !retryCondition.canRetry(e)) { |
| if (retryMaterial.shouldThrowException()) { |
| throw e; |
| } |
| } |
| } |
| } while (i <= retryTimes); |
| if (retryMaterial.shouldThrowException()) { |
| throw new RuntimeException("Execute given execution failed after retry " + retryTimes + " times"); |
| } |
| return null; |
| } |
| |
| public static class RetryMaterial { |
| /** |
| * Retry times, if you set it to 1, the given execution will be executed twice. |
| * Should be greater than 0. |
| */ |
| private final int retryTimes; |
| /** |
| * If set true, the given execution will throw exception if it failed after retry. |
| */ |
| private final boolean shouldThrowException; |
| // this is the exception condition, can add result condition in the future. |
| private final RetryCondition<Exception> retryCondition; |
| |
| public RetryMaterial(int retryTimes, boolean shouldThrowException, RetryCondition<Exception> retryCondition) { |
| this.retryTimes = retryTimes; |
| this.shouldThrowException = shouldThrowException; |
| this.retryCondition = retryCondition; |
| } |
| |
| public int getRetryTimes() { |
| return retryTimes; |
| } |
| |
| public boolean shouldThrowException() { |
| return shouldThrowException; |
| } |
| |
| public RetryCondition<Exception> getRetryCondition() { |
| return retryCondition; |
| } |
| } |
| |
| public interface Execution<T, E extends Exception> { |
| T execute() throws E; |
| } |
| |
| public interface RetryCondition<T> { |
| boolean canRetry(T input); |
| } |
| |
| } |