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
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  package org.apache.cassandra.tools.nodetool;
  
  import org.apache.cassandra.tools.NodeProbe;
  import picocli.CommandLine.Command;
  import picocli.CommandLine.Parameters;
  
  import static com.google.common.base.Preconditions.checkArgument;
  
  @Command(name = "settraceprobability", description = "Sets the probability for tracing any given request to value. 0 disables, 1 enables for all requests, 0 is the default")
  public class SetTraceProbability extends AbstractCommand
  {
      @Parameters(paramLabel = "trace_probability", description = "Trace probability between 0 and 1 (ex: 0.2)", arity = "1")
      private Double traceProbability = null;
  
      @Override
      public void execute(NodeProbe probe)
      {
          checkArgument(traceProbability >= 0 && traceProbability <= 1, "Trace probability must be between 0 and 1");
          probe.setTraceProbability(traceProbability);
      }
  }
  