com.mantisrx.common.utils.Closeables Maven / Gradle / Ivy
/*
* Copyright 2022 Netflix, Inc.
*
* 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.mantisrx.common.utils;
import java.io.Closeable;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.commons.io.IOExceptionList;
public class Closeables {
/**
* Combines a list of closeables into a composite closeable which when called closes the closeables one-by-one.
*
* @param closeables closeables that all need to be closed
* @return a composite closeable
*/
public static Closeable combine(Collection closeables) {
return combine(closeables.toArray(new Closeable[0]));
}
public static Closeable combine(Closeable... closeables) {
return () -> {
List list = new ArrayList<>();
for (Closeable closeable: closeables) {
try {
closeable.close();
} catch (IOException e) {
list.add(new Exception(String.format("Failed to close %s", closeable), e));
}
}
if (!list.isEmpty()) {
throw new IOExceptionList(list);
}
};
}
}