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.profiling.trace.analyze;
  
  import com.google.common.primitives.Ints;
  import com.google.protobuf.InvalidProtocolBufferException;
  import java.util.List;
  import java.util.Objects;
  
  import lombok.Data;
  import org.apache.skywalking.apm.network.language.profile.v3.ThreadStack;
  import org.apache.skywalking.oap.server.core.profiling.trace.ProfileThreadSnapshotRecord;
  
  /**
   * Deserialize from {@link ProfileThreadSnapshotRecord}
   */
  @Data
  public class ProfileStack implements Comparable<ProfileStack> {
  
      private int sequence;
      private long dumpTime;
      private List<String> stack;
  
      public static ProfileStack deserialize(ProfileThreadSnapshotRecord record) {
          ThreadStack threadStack = null;
          try {
              threadStack = ThreadStack.parseFrom(record.getStackBinary());
          } catch (InvalidProtocolBufferException e) {
              throw new IllegalArgumentException("wrong stack data");
          }
  
          // build data
          ProfileStack stack = new ProfileStack();
          stack.sequence = record.getSequence();
          stack.dumpTime = record.getDumpTime();
          stack.stack = threadStack.getCodeSignaturesList();
  
          return stack;
      }
  
      @Override
      public int compareTo(ProfileStack o) {
          return Ints.compare(sequence, o.sequence);
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) return true;
          if (o == null || getClass() != o.getClass()) return false;
          ProfileStack that = (ProfileStack) o;
          return sequence == that.sequence;
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(sequence);
      }
  }
  