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/*
 * Copyright 2021-2024 the original author or authors.
 *
 * 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.metaeffekt.artifact.analysis.utils;

import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;

public class ConcurrentUtils {

    public static void awaitTerminationOrCancelOnException(ExecutorService executor, Map exceptions) {
        // shutdown and wait until all commands have finished or an error occurred
        executor.shutdown();
        while (!executor.isTerminated()) {
            try {
                executor.awaitTermination(200, TimeUnit.MILLISECONDS);
            } catch (InterruptedException e) {
                // nothing to do
            }

            // when there is an exception, do not attempt the commands that have not started yet
            // and try to terminate the currently running (not guaranteed)
            if (!exceptions.isEmpty()) {
                executor.shutdownNow();
            }
        }
    }

}