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.repair.consistent.admin;
  
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  import javax.management.openmbean.ArrayType;
  import javax.management.openmbean.CompositeData;
  import javax.management.openmbean.CompositeDataSupport;
  import javax.management.openmbean.CompositeType;
  import javax.management.openmbean.OpenDataException;
  import javax.management.openmbean.OpenType;
  import javax.management.openmbean.SimpleType;
  
  import com.google.common.base.Preconditions;
  
  import org.apache.cassandra.io.sstable.format.SSTableReader;
  import org.apache.cassandra.io.util.FileUtils;
  import org.apache.cassandra.utils.TimeUUID;
  
  public class PendingStat
  {
      private static final String[] COMPOSITE_NAMES = new String[] {"dataSize", "numSSTables", "sessions"};
      private static final OpenType<?>[] COMPOSITE_TYPES;
      public static final CompositeType COMPOSITE_TYPE;
  
      static
      {
          try
          {
              COMPOSITE_TYPES = new OpenType[] { SimpleType.LONG, SimpleType.INTEGER, ArrayType.getArrayType(SimpleType.STRING) };
              COMPOSITE_TYPE = new CompositeType(PendingStat.class.getName(),
                                                 PendingStat.class.getSimpleName(),
                                                 COMPOSITE_NAMES, COMPOSITE_NAMES, COMPOSITE_TYPES);
          }
          catch (OpenDataException e)
          {
              throw new RuntimeException(e);
          }
      }
  
  
  
      public final long dataSize;
      public final int numSSTables;
      public final Set<TimeUUID> sessions;
  
      public PendingStat(long dataSize, int numSSTables, Set<TimeUUID> sessions)
      {
          this.dataSize = dataSize;
          this.numSSTables = numSSTables;
          this.sessions = Collections.unmodifiableSet(sessions);
      }
  
      public String sizeString()
      {
          return String.format("%s (%s sstables / %s sessions)", FileUtils.stringifyFileSize(dataSize), numSSTables, sessions.size());
      }
  
      public CompositeData toComposite()
      {
          Map<String, Object> values = new HashMap<>();
          values.put(COMPOSITE_NAMES[0], dataSize);
          values.put(COMPOSITE_NAMES[1], numSSTables);
          String[] sessionIds = new String[sessions.size()];
          int idx = 0;
          for (TimeUUID session : sessions)
              sessionIds[idx++] = session.toString();
          values.put(COMPOSITE_NAMES[2], sessionIds);
  
          try
          {
              return new CompositeDataSupport(COMPOSITE_TYPE, values);
          }
          catch (OpenDataException e)
          {
              throw new RuntimeException(e);
          }
      }
  
      public static PendingStat fromComposite(CompositeData cd)
      {
          Preconditions.checkArgument(cd.getCompositeType().equals(COMPOSITE_TYPE));
          Object[] values = cd.getAll(COMPOSITE_NAMES);
          Set<TimeUUID> sessions = new HashSet<>();
          for (String session : (String[]) values[2])
              sessions.add(TimeUUID.fromString(session));
          return new PendingStat((long) values[0], (int) values[1], sessions);
      }
  
      public static class Builder
      {
          public long dataSize = 0;
          public int numSSTables = 0;
          public Set<TimeUUID> sessions = new HashSet<>();
  
          public Builder addSSTable(SSTableReader sstable)
          {
              TimeUUID sessionID = sstable.getPendingRepair();
              if (sessionID == null)
                  return this;
              dataSize += sstable.onDiskLength();
              sessions.add(sessionID);
              numSSTables++;
              return this;
          }
  
          public Builder addStat(PendingStat stat)
          {
              dataSize += stat.dataSize;
              numSSTables += stat.numSSTables;
              sessions.addAll(stat.sessions);
              return this;
          }
  
          public PendingStat build()
          {
              return new PendingStat(dataSize, numSSTables, sessions);
          }
      }
  }
  