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.core.source;
  
  import com.google.common.hash.Hashing;
  import com.linecorp.armeria.internal.shaded.guava.base.Charsets;
  import lombok.Getter;
  import lombok.Setter;
  
  import static org.apache.skywalking.oap.server.core.source.DefaultScopeDefine.EBPF_PROFILING_SCHEDULE;
  
  @Setter
  @Getter
  @ScopeDeclaration(id = EBPF_PROFILING_SCHEDULE, name = "EBPFProcessProfilingSchedule")
  @ScopeDefaultColumn.VirtualColumnDefinition(fieldName = "entityId", columnName = "entity_id", isID = true, type = String.class)
  public class EBPFProcessProfilingSchedule extends Source {
      private volatile String entityId;
  
      @Override
      public int scope() {
          return EBPF_PROFILING_SCHEDULE;
      }
  
      @Override
      public String getEntityId() {
          if (entityId == null) {
              entityId = Hashing.sha256().newHasher()
                      .putString(String.format("%s_%s_%d", taskId, processId, startTime), Charsets.UTF_8)
                      .hash().toString();
          }
          return entityId;
      }
  
      private String processId;
      private String taskId;
      private long startTime;
      private long currentTime;
  }
  