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.meter.analyzer.dsl.registry;
  
  import org.apache.commons.lang3.StringUtils;
  import org.apache.skywalking.oap.meter.analyzer.k8s.K8sInfoRegistry;
  import org.apache.skywalking.oap.server.core.Const;
  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.analysis.manual.process.ProcessDetectType;
  import org.apache.skywalking.oap.server.core.analysis.manual.process.ProcessTraffic;
  import org.apache.skywalking.oap.server.core.analysis.worker.MetricsStreamProcessor;
  
  /**
   * The dynamic entity registry for {@link ProcessTraffic}
   */
  public class ProcessRegistry {
  
      public static final String LOCAL_VIRTUAL_PROCESS = "UNKNOWN_LOCAL";
      public static final String REMOTE_VIRTUAL_PROCESS = "UNKNOWN_REMOTE";
  
      /**
       * Generate virtual local process under the instance
       * @return the process id
       */
      public static String generateVirtualLocalProcess(String service, String instance) {
          return generateVirtualProcess(service, instance, LOCAL_VIRTUAL_PROCESS);
      }
  
      /**
       * Generate virtual remote process under the instance
       * trying to generate the name in the kubernetes environment through the remote address
       * @return the process id
       */
      public static String generateVirtualRemoteProcess(String service, String instance, String remoteAddress) {
          // remove port
          String ip = StringUtils.substringBeforeLast(remoteAddress, ":");
  
          // find remote through k8s metadata
          String name = K8sInfoRegistry.getInstance().findPodByIP(ip);
          if (StringUtils.isEmpty(name)) {
              name = K8sInfoRegistry.getInstance().findServiceByIP(ip);
          }
          // if not exists, then just use remote unknown
          if (StringUtils.isEmpty(name)) {
              name = REMOTE_VIRTUAL_PROCESS;
          }
  
          return generateVirtualProcess(service, instance, name);
      }
  
      public static String generateVirtualProcess(String service, String instance, String processName) {
          final ProcessTraffic traffic = new ProcessTraffic();
          final String serviceId = IDManager.ServiceID.buildId(service, true);
          traffic.setServiceId(serviceId);
          traffic.setInstanceId(IDManager.ServiceInstanceID.buildId(serviceId, instance));
          traffic.setName(processName);
          traffic.setAgentId(Const.EMPTY_STRING);
          traffic.setLabelsJson(Const.EMPTY_STRING);
          traffic.setDetectType(ProcessDetectType.VIRTUAL.value());
          final long timeBucket = TimeBucket.getTimeBucket(System.currentTimeMillis(), DownSampling.Minute);
          traffic.setTimeBucket(timeBucket);
          traffic.setLastPingTimestamp(timeBucket);
          MetricsStreamProcessor.getInstance().in(traffic);
          return traffic.id().build();
      }
  }