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.tools.nodetool;
  
  import java.io.PrintStream;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.cassandra.db.virtual.CIDRFilteringMetricsTable.CIDRFilteringMetricsCountsTable;
  import org.apache.cassandra.db.virtual.CIDRFilteringMetricsTable.CIDRFilteringMetricsLatenciesTable;
  import org.apache.cassandra.tools.NodeProbe;
  import org.apache.cassandra.tools.nodetool.formatter.TableBuilder;
  import picocli.CommandLine.Command;
  
  /**
   * Nodetool command to view stats related to CIDR filtering
   */
  @Command(name = "cidrfilteringstats", description = "Print statistics on CIDR filtering")
  public class CIDRFilteringStats extends AbstractCommand
  {
      private void printCountsMetrics(NodeProbe probe, PrintStream out)
      {
          out.println(CIDRFilteringMetricsCountsTable.TABLE_NAME + ": ");
          TableBuilder outputTable = new TableBuilder();
          outputTable.add(CIDRFilteringMetricsCountsTable.NAME_COL,
                          CIDRFilteringMetricsCountsTable.VALUE_COL);
  
          Map<String, Long> metricRows = probe.getCountsMetricsFromVtable();
  
          for (Map.Entry<String, Long> row : metricRows.entrySet())
          {
              outputTable.add(row.getKey(), Long.toString(row.getValue()));
          }
  
          outputTable.printTo(out);
          out.println();
      }
  
      private void printLatenciesMetrics(NodeProbe probe, PrintStream out)
      {
          out.println(CIDRFilteringMetricsLatenciesTable.TABLE_NAME + ": ");
          TableBuilder outputTable = new TableBuilder();
          outputTable.add(CIDRFilteringMetricsLatenciesTable.NAME_COL,
                          CIDRFilteringMetricsLatenciesTable.P50_COL,
                          CIDRFilteringMetricsLatenciesTable.P95_COL,
                          CIDRFilteringMetricsLatenciesTable.P99_COL,
                          CIDRFilteringMetricsLatenciesTable.P999_COL,
                          CIDRFilteringMetricsLatenciesTable.MAX_COL);
  
          Map<String, List<Double>> metricRows = probe.getLatenciesMetricsFromVtable();
  
          for (Map.Entry<String, List<Double>> row : metricRows.entrySet())
          {
              List<String> values = new ArrayList<>();
              values.add(row.getKey());
              for (Double col : row.getValue())
              {
                  values.add(Double.toString(col));
              }
              outputTable.add(values);
          }
  
          outputTable.printTo(out);
          out.println();
      }
  
      @Override
      public void execute(NodeProbe probe)
      {
          PrintStream out = probe.output().out;
  
          // Read rows from corresponding virtual tables and print
          printCountsMetrics(probe, out);
          printLatenciesMetrics(probe, out);
      }
  }
  