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.db.virtual;
  
  import org.apache.cassandra.db.compaction.CompactionInfo;
  import org.apache.cassandra.db.compaction.CompactionManager;
  import org.apache.cassandra.db.marshal.DoubleType;
  import org.apache.cassandra.db.marshal.Int32Type;
  import org.apache.cassandra.db.marshal.LongType;
  import org.apache.cassandra.db.marshal.TimeUUIDType;
  import org.apache.cassandra.db.marshal.UTF8Type;
  import org.apache.cassandra.dht.LocalPartitioner;
  import org.apache.cassandra.schema.TableMetadata;
  
  import static org.apache.cassandra.utils.LocalizeString.toLowerCaseLocalized;
  
  final class SSTableTasksTable extends AbstractVirtualTable
  {
      private final static String KEYSPACE_NAME = "keyspace_name";
      private final static String TABLE_NAME = "table_name";
      private final static String TASK_ID = "task_id";
      private final static String COMPLETION_RATIO = "completion_ratio";
      private final static String KIND = "kind";
      private final static String PROGRESS = "progress";
      private final static String SSTABLES = "sstables";
      private final static String TOTAL = "total";
      private final static String UNIT = "unit";
      private final static String TARGET_DIRECTORY = "target_directory";
  
      SSTableTasksTable(String keyspace)
      {
          super(TableMetadata.builder(keyspace, "sstable_tasks")
                             .comment("current sstable tasks")
                             .kind(TableMetadata.Kind.VIRTUAL)
                             .partitioner(new LocalPartitioner(UTF8Type.instance))
                             .addPartitionKeyColumn(KEYSPACE_NAME, UTF8Type.instance)
                             .addClusteringColumn(TABLE_NAME, UTF8Type.instance)
                             .addClusteringColumn(TASK_ID, TimeUUIDType.instance)
                             .addRegularColumn(COMPLETION_RATIO, DoubleType.instance)
                             .addRegularColumn(KIND, UTF8Type.instance)
                             .addRegularColumn(PROGRESS, LongType.instance)
                             .addRegularColumn(SSTABLES, Int32Type.instance)
                             .addRegularColumn(TOTAL, LongType.instance)
                             .addRegularColumn(UNIT, UTF8Type.instance)
                             .addRegularColumn(TARGET_DIRECTORY, UTF8Type.instance)
                             .build());
      }
  
      public DataSet data()
      {
          SimpleDataSet result = new SimpleDataSet(metadata());
  
          for (CompactionInfo task : CompactionManager.instance.getSSTableTasks())
          {
              long completed = task.getCompleted();
              long total = task.getTotal();
  
              double completionRatio = total == 0L ? 1.0 : (((double) completed) / total);
  
              result.row(task.getKeyspace().orElse("*"),
                         task.getTable().orElse("*"),
                         task.getTaskId())
                    .column(COMPLETION_RATIO, completionRatio)
                    .column(KIND, toLowerCaseLocalized(task.getTaskType().toString()))
                    .column(PROGRESS, completed)
                    .column(SSTABLES, task.getSSTables().size())
                    .column(TOTAL, total)
                    .column(UNIT, toLowerCaseLocalized(task.getUnit().toString()))
                    .column(TARGET_DIRECTORY, task.targetDirectory());
          }
  
          return result;
      }
  }
  