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.cassandra.distributed.impl;
  
  import java.net.InetAddress;
  import java.util.ArrayList;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.UUID;
  
  import org.apache.cassandra.distributed.api.ConsistencyLevel;
  import org.apache.cassandra.utils.TimeUUID;
  
  /**
   * Utilities for accessing the system_traces table from in-JVM dtests
   */
  public class TracingUtil
  {
      /**
       * Represents an entry from system_traces
       */
      public static class TraceEntry
      {
          public final UUID sessionId;
          public final UUID eventId;
          public final String activity;
          public final InetAddress source;
          public final int sourceElapsed;
          public final String thread;
  
          private TraceEntry(UUID sessionId, UUID eventId, String activity, InetAddress sourceIP, int sourceElapsed, String thread)
          {
              this.sessionId = sessionId;
              this.eventId = eventId;
              this.activity = activity;
              this.source = sourceIP;
              this.sourceElapsed = sourceElapsed;
              this.thread = thread;
          }
  
          static TraceEntry fromRowResultObjects(Object[] objects)
          {
              UUID eventId = objects[1] instanceof UUID ? (UUID)objects[1]: ((TimeUUID)objects[1]).asUUID();
              return new TraceEntry((UUID)objects[0],
                                    eventId,
                                    (String) objects[2],
                                    (InetAddress) objects[3],
                                    (Integer) objects[4],
                                    (String) objects[5]);
          }
      }
  
      public static List<TraceEntry> getTrace(AbstractCluster cluster, UUID sessionId)
      {
          return getTrace(cluster, sessionId, ConsistencyLevel.ALL);
      }
  
      public static List<TraceEntry> getTrace(AbstractCluster cluster, UUID sessionId, ConsistencyLevel cl)
      {
          Object[][] result = cluster.coordinator(1).execute(
          "SELECT session_id, event_id, activity, source, source_elapsed, thread " +
          "FROM system_traces.events WHERE session_id = ?", cl, sessionId);
  
          List<TraceEntry> traces = new LinkedList<>();
          for (Object[] r : result)
          {
              traces.add(TraceEntry.fromRowResultObjects(r));
          }
          return traces;
      }
  
      public static List<TraceEntry> getTraces(AbstractCluster cluster)
      {
          return getTraces(cluster, ConsistencyLevel.ALL);
      }
  
      public static List<TraceEntry> getTraces(AbstractCluster cluster, ConsistencyLevel cl)
      {
          Object[][] result = cluster.coordinator(1).execute(
          "SELECT session_id, event_id, activity, source, source_elapsed, thread " +
          "FROM system_traces.events", cl);
  
          List<TraceEntry> traces = new ArrayList<>();
          for (Object[] r : result)
          {
              traces.add(TraceEntry.fromRowResultObjects(r));
          }
          return traces;
      }
  }
  