74 lines
2.4 KiB
Java
74 lines
2.4 KiB
Java
/*
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* FileSponge
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* Copyright (C) 2021 Andrea Cavalli
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package org.warp.filesponge;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.time.Duration;
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import java.util.List;
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import java.util.NoSuchElementException;
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import java.util.concurrent.TimeUnit;
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import org.warp.commonutils.log.Logger;
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import org.warp.commonutils.log.LoggerFactory;
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import reactor.core.Exceptions;
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import reactor.core.publisher.Flux;
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import reactor.core.publisher.Mono;
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import reactor.core.scheduler.Schedulers;
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public class FileSpongeUtils {
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private static final Logger logger = LoggerFactory.getLogger(FileSponge.class);
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public static <T> Mono<T> firstWithValueMono(List<Mono<T>> monos) {
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return Mono.firstWithValue(monos).onErrorResume(FileSpongeUtils::ignoreFakeErrors);
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}
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public static <T> Flux<T> firstWithValueFlux(List<Flux<T>> monos) {
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return Flux.firstWithValue(monos).onErrorResume(FileSpongeUtils::ignoreFakeErrors);
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}
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private static <T> Mono<T> ignoreFakeErrors(Throwable ex) {
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if (ex instanceof NoSuchElementException) {
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var multiple = Exceptions.unwrapMultiple(ex.getCause());
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for (Throwable throwable : multiple) {
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if (!(throwable instanceof NoSuchElementException)) {
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return Mono.error(ex);
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}
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}
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return Mono.empty();
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} else {
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return Mono.error(ex);
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}
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}
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public static Mono<Path> deleteFileAfter(Path path, Duration delay) {
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return Mono.fromCallable(() -> {
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Schedulers.boundedElastic().schedule(() -> {
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try {
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Files.deleteIfExists(path);
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} catch (IOException e) {
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logger.warn("Failed to delete file \"{}\"", path, e);
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}
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}, delay.toMillis(), TimeUnit.MILLISECONDS);
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return path;
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}).subscribeOn(Schedulers.boundedElastic());
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}
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}
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