code: /*
   * 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.skywalking.oap.server.analyzer.event;
  
  import java.util.ArrayList;
  import java.util.List;
  import lombok.RequiredArgsConstructor;
  import lombok.extern.slf4j.Slf4j;
  import org.apache.skywalking.apm.network.event.v3.Event;
  import org.apache.skywalking.oap.server.analyzer.event.listener.EventAnalyzerListener;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  import org.apache.skywalking.oap.server.analyzer.event.listener.IEventAnalyzerListenerManager;
  
  @Slf4j
  @RequiredArgsConstructor
  public class EventAnalyzerServiceImpl implements EventAnalyzerService, IEventAnalyzerListenerManager {
      private final ModuleManager moduleManager;
  
      private final List<EventAnalyzerListener.Factory> factories = new ArrayList<>();
  
      @Override
      public void analyze(final Event event) {
          final Event.Builder eb = event.toBuilder();
          if (event.getStartTime() <= 0 && event.getEndTime() <= 0) {
              log.warn(
                  "Event start time {} and end time {} are both invalid, they will be set to current time, eventId: {}",
                  event.getStartTime(),
                  event.getEndTime(),
                  event.getUuid());
              eb.setStartTime(System.currentTimeMillis());
              eb.setEndTime(System.currentTimeMillis());
          }
  
          final EventAnalyzer analyzer = new EventAnalyzer(moduleManager, this);
          analyzer.analyze(eb.build());
      }
  
      @Override
      public void add(final EventAnalyzerListener.Factory factory) {
          factories.add(factory);
      }
  
      @Override
      public List<EventAnalyzerListener.Factory> getEventAnalyzerListenerFactories() {
          return factories;
      }
  }
  