/*
* 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 static com.google.common.base.Preconditions.checkArgument;
import io.airlift.command.Arguments;
import io.airlift.command.Command;
import org.apache.cassandra.tools.NodeProbe;
import org.apache.cassandra.tools.NodeTool.NodeToolCmd;
@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 NodeToolCmd
{
@Arguments(title = "trace_probability", usage = "<value>", description = "Trace probability between 0 and 1 (ex: 0.2)", required = true)
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);
}
}