| /* |
| * 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.drill.common; |
| |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Objects; |
| |
| import org.apache.drill.common.exceptions.UserException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Utilities for AutoCloseable classes. |
| */ |
| public class AutoCloseables { |
| |
| private static final Logger logger = LoggerFactory.getLogger(AutoCloseables.class); |
| |
| public interface Closeable extends AutoCloseable { |
| @Override |
| void close(); |
| } |
| |
| public static AutoCloseable all(final Collection<? extends AutoCloseable> autoCloseables) { |
| return () -> close(autoCloseables); |
| } |
| |
| /** |
| * Closes all autoCloseables if not null and suppresses exceptions by adding them to t |
| * @param t the throwable to add suppressed exception to |
| * @param autoCloseables the closeables to close |
| */ |
| public static void close(Throwable t, AutoCloseable... autoCloseables) { |
| close(t, Arrays.asList(autoCloseables)); |
| } |
| |
| /** |
| * Closes all autoCloseables if not null and suppresses exceptions by adding them to t |
| * @param t the throwable to add suppressed exception to |
| * @param autoCloseables the closeables to close |
| */ |
| public static void close(Throwable t, Collection<? extends AutoCloseable> autoCloseables) { |
| try { |
| close(autoCloseables); |
| } catch (Exception e) { |
| t.addSuppressed(e); |
| } |
| } |
| |
| /** |
| * Closes all autoCloseables if not null and suppresses subsequent exceptions if more than one |
| * @param autoCloseables the closeables to close |
| */ |
| public static void close(AutoCloseable... autoCloseables) throws Exception { |
| close(Arrays.asList(autoCloseables)); |
| } |
| |
| public static void closeWithUserException(AutoCloseable... autoCloseables) { |
| try { |
| close(Arrays.asList(autoCloseables)); |
| } catch (Exception e) { |
| throw UserException.dataReadError(e).build(logger); |
| } |
| } |
| |
| /** |
| * Closes all autoCloseables if not null and suppresses subsequent exceptions if more than one |
| * @param autoCloseables the closeables to close |
| */ |
| public static void close(Iterable<? extends AutoCloseable> autoCloseables) throws Exception { |
| Exception topLevelException = null; |
| for (AutoCloseable closeable : autoCloseables) { |
| try { |
| if (closeable != null) { |
| closeable.close(); |
| } |
| } catch (Exception e) { |
| if (topLevelException == null) { |
| topLevelException = e; |
| } else { |
| topLevelException.addSuppressed(e); |
| } |
| } |
| } |
| if (topLevelException != null) { |
| throw topLevelException; |
| } |
| } |
| |
| /** |
| * Close all without caring about thrown exceptions |
| * @param closeables array containing auto closeables |
| */ |
| public static void closeSilently(AutoCloseable... closeables) { |
| Arrays.stream(closeables).filter(Objects::nonNull) |
| .forEach(target -> { |
| try { |
| target.close(); |
| } catch (Exception e) { |
| logger.warn("Exception was thrown while closing auto closeable: {}", target, e); |
| } |
| }); |
| } |
| } |