| // Copyright (C) 2019 The Android Open Source Project |
| // |
| // 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 com.google.gerrit.server.update; |
| |
| import com.github.rholder.retry.RetryListener; |
| import com.google.common.base.Throwables; |
| import com.google.gerrit.exceptions.StorageException; |
| import com.google.gerrit.index.query.InternalQuery; |
| import com.google.inject.Provider; |
| import java.util.function.Consumer; |
| import java.util.function.Predicate; |
| |
| /** |
| * An action to query an index that is executed with retrying. |
| * |
| * <p>Instances of this class are created via {@link RetryHelper#accountIndexQuery(String, |
| * IndexQueryAction)} and {@link RetryHelper#changeIndexQuery(String, IndexQueryAction)}. |
| * |
| * <p>In contrast to normal {@link RetryableAction.Action}s that are called via {@link |
| * RetryableAction} {@link IndexQueryAction}s get a {@link InternalQuery} provided. |
| * |
| * <p>In addition when an index query action is called any exception that is not an unchecked |
| * exception gets wrapped into an {@link StorageException}. |
| */ |
| public class RetryableIndexQueryAction<Q extends InternalQuery<?, Q>, T> |
| extends RetryableAction<T> { |
| @FunctionalInterface |
| public interface IndexQueryAction<T, Q> { |
| T call(Q internalQuery) throws Exception; |
| } |
| |
| RetryableIndexQueryAction( |
| RetryHelper retryHelper, |
| Provider<Q> internalQuery, |
| String actionName, |
| IndexQueryAction<T, Q> indexQuery) { |
| super( |
| retryHelper, |
| ActionType.INDEX_QUERY, |
| actionName, |
| () -> indexQuery.call(internalQuery.get())); |
| } |
| |
| @Override |
| public RetryableIndexQueryAction<Q, T> retryOn(Predicate<Throwable> exceptionPredicate) { |
| super.retryOn(exceptionPredicate); |
| return this; |
| } |
| |
| @Override |
| public RetryableIndexQueryAction<Q, T> retryWithTrace(Predicate<Throwable> exceptionPredicate) { |
| super.retryWithTrace(exceptionPredicate); |
| return this; |
| } |
| |
| @Override |
| public RetryableIndexQueryAction<Q, T> onAutoTrace(Consumer<String> traceIdConsumer) { |
| super.onAutoTrace(traceIdConsumer); |
| return this; |
| } |
| |
| @Override |
| public RetryableIndexQueryAction<Q, T> listener(RetryListener retryListener) { |
| super.listener(retryListener); |
| return this; |
| } |
| |
| @Override |
| public RetryableIndexQueryAction<Q, T> defaultTimeoutMultiplier(int multiplier) { |
| super.defaultTimeoutMultiplier(multiplier); |
| return this; |
| } |
| |
| @Override |
| public T call() { |
| try { |
| return super.call(); |
| } catch (Throwable t) { |
| Throwables.throwIfUnchecked(t); |
| throw new StorageException(t); |
| } |
| } |
| } |