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.performance;
  
  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.BrowserPerfData;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  import org.apache.skywalking.oap.server.library.util.StringUtil;
  import org.apache.skywalking.oap.server.receiver.browser.provider.BrowserServiceModuleConfig;
  import org.apache.skywalking.oap.server.receiver.browser.provider.parser.performance.listener.PerfDataAnalysisListener;
  
  @Slf4j
  @RequiredArgsConstructor
  public class PerfDataAnalyzer {
      private final ModuleManager moduleManager;
      private final PerfDataParserListenerManager listenerManager;
      private final BrowserServiceModuleConfig config;
  
      private final List<PerfDataAnalysisListener> analysisListeners = new LinkedList<>();
  
      public void doAnalysis(BrowserPerfData browserPerfData) {
          if (StringUtil.isBlank(browserPerfData.getService())) {
              return;
          }
  
          createAnalysisListeners();
  
          BrowserPerfDataDecorator decorator = new BrowserPerfDataDecorator(browserPerfData);
          // Use the server side current time.
          long nowMillis = System.currentTimeMillis();
          decorator.setTime(nowMillis);
          if (StringUtil.isBlank(decorator.getServiceVersion())) {
              // Set the default version as latest, considering it is running.
              decorator.setServiceVersion("latest");
          }
          if (StringUtil.isBlank(decorator.getPagePath())) {
              // Set the default page path as root(/).
              decorator.setPagePath("/");
          }
  
          notifyListener(decorator);
  
          notifyListenerToBuild();
      }
  
      private void notifyListener(BrowserPerfDataDecorator decorator) {
          analysisListeners.forEach(listener -> listener.parse(decorator));
      }
  
      private void notifyListenerToBuild() {
          analysisListeners.forEach(PerfDataAnalysisListener::build);
      }
  
      private void createAnalysisListeners() {
          listenerManager.getPerfDataListenerFactories()
                         .forEach(factory -> analysisListeners.add(factory.create(moduleManager, config)));
      }
  }
  