/*
    * 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.logging.log4j.core.appender.rolling;
  
  import java.util.Arrays;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.logging.log4j.core.Core;
  import org.apache.logging.log4j.core.LifeCycle;
  import org.apache.logging.log4j.core.LifeCycle2;
  import org.apache.logging.log4j.core.LogEvent;
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginElement;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  
  /**
   * Triggering policy that wraps other triggering policies.
   */
  @Plugin(name = "Policies", category = Core.CATEGORY_NAME, printObject = true)
  public final class CompositeTriggeringPolicy extends AbstractTriggeringPolicy {
  
      private final TriggeringPolicy[] triggeringPolicies;
  
      private CompositeTriggeringPolicy(final TriggeringPolicy... triggeringPolicies) {
          this.triggeringPolicies = triggeringPolicies;
      }
  
      public TriggeringPolicy[] getTriggeringPolicies() {
          return triggeringPolicies;
      }
  
      /**
       * Initializes the policy.
       * @param manager The RollingFileManager.
       */
      @Override
      public void initialize(final RollingFileManager manager) {
          for (final TriggeringPolicy triggeringPolicy : triggeringPolicies) {
              LOGGER.debug("Initializing triggering policy {}", triggeringPolicy.toString());
              triggeringPolicy.initialize(manager);
          }
      }
  
      /**
       * Determines if a rollover should occur.
       * @param event A reference to the currently event.
       * @return true if a rollover should occur, false otherwise.
       */
      @Override
      public boolean isTriggeringEvent(final LogEvent event) {
          for (final TriggeringPolicy triggeringPolicy : triggeringPolicies) {
              if (triggeringPolicy.isTriggeringEvent(event)) {
                  return true;
              }
          }
          return false;
      }
  
      /**
       * Creates a CompositeTriggeringPolicy.
       * @param triggeringPolicy The triggering policies.
       * @return A CompositeTriggeringPolicy.
       */
      @PluginFactory
      public static CompositeTriggeringPolicy createPolicy(
                                                  @PluginElement("Policies") final TriggeringPolicy... triggeringPolicy) {
          return new CompositeTriggeringPolicy(triggeringPolicy);
      }
  
      @Override
      public boolean stop(final long timeout, final TimeUnit timeUnit) {
          setStopping();
          boolean stopped = true;
          for (final TriggeringPolicy triggeringPolicy : triggeringPolicies) {
              if (triggeringPolicy instanceof LifeCycle2) {
                  stopped &= ((LifeCycle2) triggeringPolicy).stop(timeout, timeUnit);
              } else if (triggeringPolicy instanceof LifeCycle) {
                  ((LifeCycle) triggeringPolicy).stop();
                  stopped &= true;
              }
          }
          setStopped();
          return stopped;
      }
  
     @Override
     public String toString() {
         return "CompositeTriggeringPolicy(policies=" + Arrays.toString(triggeringPolicies) + ")";
     }
 
 }