// Copyright (C) 2017 The Android Open Source Project
//
// 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.ericsson.gerrit.plugins.gcconductor;

import com.google.common.collect.Lists;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.util.List;

/** Responsible to notify all {@link ShutdownListener} */
@Singleton
public class ShutdownNotifier {

  private final List<ShutdownListener> listeners;

  @Inject
  public ShutdownNotifier(List<ShutdownListener> listeners) {
    this.listeners = listeners;
  }

  /** Notify all {@link ShutdownListener}. */
  public void notifyAllListeners() {
    for (ShutdownListener listener : Lists.reverse(listeners)) {
      listener.onShutdown();
    }
  }
}