| /* |
| * 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.beam.sdk.io.common; |
| |
| import java.util.Map; |
| import org.apache.beam.sdk.options.PipelineOptionsFactory; |
| import org.apache.beam.sdk.options.PipelineOptionsValidator; |
| import org.apache.beam.sdk.testing.TestPipeline; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** Methods common to all types of IOITs. */ |
| public class IOITHelper { |
| private static final Logger LOG = LoggerFactory.getLogger(IOITHelper.class); |
| private static final int maxAttempts = 3; |
| private static final long minDelay = 1_000; |
| |
| private IOITHelper() {} |
| |
| public static String getHashForRecordCount(int recordCount, Map<Integer, String> hashes) { |
| String hash = hashes.get(recordCount); |
| if (hash == null) { |
| throw new UnsupportedOperationException( |
| String.format("No hash for that record count: %s", recordCount)); |
| } |
| return hash; |
| } |
| |
| public static <T extends IOTestPipelineOptions> T readIOTestPipelineOptions( |
| Class<T> optionsType) { |
| |
| PipelineOptionsFactory.register(optionsType); |
| IOTestPipelineOptions options = TestPipeline.testingPipelineOptions().as(optionsType); |
| |
| return PipelineOptionsValidator.validate(optionsType, options); |
| } |
| |
| /** Interface for passing any method to executeWithRetry function. */ |
| @FunctionalInterface |
| public interface RetryFunction { |
| void run() throws Exception; |
| } |
| |
| /** |
| * This function executes the method and retries it in case of failure. |
| * |
| * @param function The function to retry |
| * @throws Exception |
| */ |
| public static void executeWithRetry(RetryFunction function) throws Exception { |
| executeWithRetry(maxAttempts, minDelay, function); |
| } |
| |
| /** |
| * This function executes the method and retries it in case of failure. The method is retried when |
| * an exception is thrown and it does not depend on the error response. This can be used for tests |
| * which await for infrastructure setup i.e. database connection. |
| * |
| * @param maxAttempts The number of retry attempts |
| * @param minDelay Minimal delay which will grow exponentially |
| * @param function The function to retry |
| * @throws Exception |
| */ |
| public static void executeWithRetry(int maxAttempts, long minDelay, RetryFunction function) |
| throws Exception { |
| int attempts = 1; |
| long delay = minDelay; |
| |
| while (attempts <= maxAttempts) { |
| try { |
| function.run(); |
| return; |
| } catch (Exception e) { |
| LOG.warn("Attempt #{} of {} failed: {}.", attempts, maxAttempts, e.getMessage()); |
| if (attempts == maxAttempts) { |
| throw e; |
| } else { |
| long nextDelay = (long) Math.pow(2, attempts) * delay; |
| LOG.warn("Retrying in {} ms.", nextDelay); |
| Thread.sleep(nextDelay); |
| } |
| attempts++; |
| } |
| } |
| } |
| } |