Log4j2ShutdownHooksExecutor.java

/**
 * 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.tomee.log4j2;

import org.apache.catalina.Lifecycle;
import org.apache.catalina.LifecycleEvent;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.Server;

import java.util.ArrayList;
import java.util.Collection;

public class Log4j2ShutdownHooksExecutor implements LifecycleListener {
    @Override
    public void lifecycleEvent(final LifecycleEvent event) {
        if (Server.class.isInstance(event.getSource()) && Lifecycle.AFTER_DESTROY_EVENT.equals(event.getType())) {
            final Collection<Runnable> copy = new ArrayList<>(CaptureLog4j2ShutdownHooks.HOOKS);
            CaptureLog4j2ShutdownHooks.HOOKS.removeAll(copy);
            for (final Runnable runnable : copy) {
                runnable.run();
            }
        }
    }
}