org.opensearch.nio.utils.ExceptionsHelper Maven / Gradle / Ivy
/*
* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*/
package org.opensearch.nio.utils;
import java.util.List;
// TODO: This should eventually be removed once ExceptionsHelper is moved to a core library jar
public class ExceptionsHelper {
/**
* Rethrows the first exception in the list and adds all remaining to the suppressed list.
* If the given list is empty no exception is thrown
*
*/
public static void rethrowAndSuppress(List exceptions) throws T {
T main = null;
for (T ex : exceptions) {
main = useOrSuppress(main, ex);
}
if (main != null) {
throw main;
}
}
private static T useOrSuppress(T first, T second) {
if (first == null) {
return second;
} else {
first.addSuppressed(second);
}
return first;
}
}