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.receiver.browser.provider.parser.errorlog;
  
  import java.util.LinkedList;
  import java.util.List;
  import lombok.RequiredArgsConstructor;
  import lombok.extern.slf4j.Slf4j;
  import org.apache.skywalking.apm.network.language.agent.v3.BrowserErrorLog;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  import org.apache.skywalking.oap.server.receiver.browser.provider.BrowserServiceModuleConfig;
  import org.apache.skywalking.oap.server.receiver.browser.provider.parser.errorlog.listener.ErrorLogAnalysisListener;
  
  @Slf4j
  @RequiredArgsConstructor
  public class ErrorLogAnalyzer {
      private final ModuleManager moduleManager;
      private final ErrorLogParserListenerManager listenerManager;
      private final BrowserServiceModuleConfig moduleConfig;
  
      private final List<ErrorLogAnalysisListener> analysisListeners = new LinkedList<>();
  
      public void doAnalysis(BrowserErrorLog errorLog) {
          createAnalysisListeners();
  
          try {
              BrowserErrorLogDecorator decorator = new BrowserErrorLogDecorator(errorLog);
              // Use the server side current time.
              long nowMillis = System.currentTimeMillis();
              decorator.setTime(nowMillis);
  
              notifyListener(decorator);
  
              notifyListenerToBuild();
          } catch (Throwable e) {
              log.error(e.getMessage(), e);
          }
      }
  
      private void notifyListener(BrowserErrorLogDecorator decorator) {
          analysisListeners.forEach(listener -> listener.parse(decorator));
      }
  
      private void notifyListenerToBuild() {
          analysisListeners.forEach(ErrorLogAnalysisListener::build);
      }
  
      private void createAnalysisListeners() {
          listenerManager.getErrorLogAnalysisListeners()
                         .forEach(factory -> analysisListeners.add(factory.create(moduleManager, moduleConfig)));
      }
  }
  