content: /*
   * 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.arrow.flight.integration.tests;
  
  import java.util.ArrayList;
  import java.util.List;
  import org.apache.arrow.memory.AllocationListener;
  
  class TestBufferAllocationListener implements AllocationListener {
    static class Entry {
      StackTraceElement[] stackTrace;
      long size;
      boolean forAllocation;
  
      public Entry(StackTraceElement[] stackTrace, long size, boolean forAllocation) {
        this.stackTrace = stackTrace;
        this.size = size;
        this.forAllocation = forAllocation;
      }
    }
  
    List<Entry> trail = new ArrayList<>();
  
    public void onAllocation(long size) {
      trail.add(new Entry(Thread.currentThread().getStackTrace(), size, true));
    }
  
    public void onRelease(long size) {
      trail.add(new Entry(Thread.currentThread().getStackTrace(), size, false));
    }
  
    public void reThrowWithAddedAllocatorInfo(Exception e) {
      StringBuilder sb = new StringBuilder();
      sb.append(e.getMessage());
      sb.append("\n");
      sb.append("[[Buffer allocation and release trail during the test execution: \n");
      for (Entry trailEntry : trail) {
        sb.append(
            String.format(
                "%s: %d: %n%s",
                trailEntry.forAllocation ? "allocate" : "release",
                trailEntry.size,
                getStackTraceAsString(trailEntry.stackTrace)));
      }
      sb.append("]]");
      throw new IllegalStateException(sb.toString(), e);
    }
  
    private String getStackTraceAsString(StackTraceElement[] elements) {
      StringBuilder sb = new StringBuilder();
      for (int i = 1; i < elements.length; i++) {
        StackTraceElement s = elements[i];
        sb.append("\t");
        sb.append(s);
        sb.append("\n");
      }
      return sb.toString();
    }
  }
  