/* * SPDX-License-Identifier: Apache-2.0 * Copyright 2018-2020 The Feast Authors * * 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 * * https://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 feast.storage.common.retry; import java.io.Serializable; import org.apache.beam.sdk.util.BackOff; import org.apache.beam.sdk.util.BackOffUtils; import org.apache.beam.sdk.util.FluentBackoff; import org.apache.beam.sdk.util.Sleeper; import org.joda.time.Duration; public class BackOffExecutor implements Serializable { private final Integer maxRetries; private final Duration initialBackOff; public BackOffExecutor(Integer maxRetries, Duration initialBackOff) { this.maxRetries = maxRetries; this.initialBackOff = initialBackOff; } public void execute(Retriable retriable) throws Exception { FluentBackoff backoff = FluentBackoff.DEFAULT.withMaxRetries(maxRetries).withInitialBackoff(initialBackOff); execute(retriable, backoff); } private void execute(Retriable retriable, FluentBackoff backoff) throws Exception { Sleeper sleeper = Sleeper.DEFAULT; BackOff backOff = backoff.backoff(); while (true) { try { retriable.execute(); break; } catch (Exception e) { if (retriable.isExceptionRetriable(e) && BackOffUtils.next(sleeper, backOff)) { retriable.cleanUpAfterFailure(); } else { throw e; } } } } }