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.log.analyzer.provider.log.listener;
  
  import com.google.protobuf.Message;
  import lombok.RequiredArgsConstructor;
  import org.apache.skywalking.apm.network.logging.v3.LogData;
  import org.apache.skywalking.oap.server.core.analysis.Layer;
  import org.apache.skywalking.oap.server.library.util.StringUtil;
  import org.apache.skywalking.oap.log.analyzer.provider.LogAnalyzerModuleConfig;
  import org.apache.skywalking.oap.server.core.CoreModule;
  import org.apache.skywalking.oap.server.core.analysis.DownSampling;
  import org.apache.skywalking.oap.server.core.analysis.IDManager;
  import org.apache.skywalking.oap.server.core.analysis.TimeBucket;
  import org.apache.skywalking.oap.server.core.config.NamingControl;
  import org.apache.skywalking.oap.server.core.source.EndpointMeta;
  import org.apache.skywalking.oap.server.core.source.ServiceInstanceUpdate;
  import org.apache.skywalking.oap.server.core.source.ServiceMeta;
  import org.apache.skywalking.oap.server.core.source.SourceReceiver;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  
  import static java.util.Objects.nonNull;
  
  /**
   * Generate service, service instance and endpoint traffic by log data.
   */
  @RequiredArgsConstructor
  public class TrafficSinkListener implements LogSinkListener {
      private final SourceReceiver sourceReceiver;
      private final NamingControl namingControl;
  
      private ServiceMeta serviceMeta;
      private ServiceInstanceUpdate instanceMeta;
      private EndpointMeta endpointMeta;
  
      @Override
      public void build() {
          if (nonNull(serviceMeta)) {
              sourceReceiver.receive(serviceMeta);
          }
          if (nonNull(instanceMeta)) {
              sourceReceiver.receive(instanceMeta);
          }
          if (nonNull(endpointMeta)) {
              sourceReceiver.receive(endpointMeta);
          }
      }
  
      @Override
      public LogSinkListener parse(final LogData.Builder logData,
                                       final Message extraLog) {
          Layer layer;
          if (StringUtil.isNotEmpty(logData.getLayer())) {
              layer = Layer.valueOf(logData.getLayer());
          } else {
              layer = Layer.GENERAL;
          }
          final long timeBucket = TimeBucket.getTimeBucket(System.currentTimeMillis(), DownSampling.Minute);
          // to service traffic
          String serviceName = namingControl.formatServiceName(logData.getService());
          String serviceId = IDManager.ServiceID.buildId(serviceName, layer.isNormal());
          serviceMeta = new ServiceMeta();
          serviceMeta.setName(namingControl.formatServiceName(logData.getService()));
          serviceMeta.setLayer(layer);
          serviceMeta.setTimeBucket(timeBucket);
          // to service instance traffic
          if (StringUtil.isNotEmpty(logData.getServiceInstance())) {
              instanceMeta = new ServiceInstanceUpdate();
              instanceMeta.setServiceId(serviceId);
              instanceMeta.setName(namingControl.formatInstanceName(logData.getServiceInstance()));
              instanceMeta.setTimeBucket(timeBucket);
  
          }
          // to endpoint traffic
          if (StringUtil.isNotEmpty(logData.getEndpoint())) {
              endpointMeta = new EndpointMeta();
              endpointMeta.setServiceName(serviceName);
              endpointMeta.setServiceNormal(true);
              endpointMeta.setEndpoint(namingControl.formatEndpointName(serviceName, logData.getEndpoint()));
              endpointMeta.setTimeBucket(timeBucket);
          }
          return this;
      }
  
      public static class Factory implements LogSinkListenerFactory {
          private final SourceReceiver sourceReceiver;
          private final NamingControl namingControl;
  
          public Factory(ModuleManager moduleManager, LogAnalyzerModuleConfig moduleConfig) {
              this.sourceReceiver = moduleManager.find(CoreModule.NAME)
                                                 .provider()
                                                 .getService(SourceReceiver.class);
              this.namingControl = moduleManager.find(CoreModule.NAME)
                                                .provider()
                                                .getService(NamingControl.class);
          }
  
          @Override
          public LogSinkListener create() {
              return new TrafficSinkListener(sourceReceiver, namingControl);
          }
      }
  }
  