/*
* Copyright 2014 NAVER Corp.
*
* Licensed 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 com.navercorp.pinpoint.bootstrap.sampler;
/**
* @author emeroad
*/
public final class SamplingFlagUtils {
// 1 byte dummy mark for further expansion of sampling specs
public static final String SAMPLING_RATE_PREFIX = "s";
public static final String SAMPLING_RATE_FALSE = SAMPLING_RATE_PREFIX + "0";
public static final String SAMPLING_RATE_TRUE = SAMPLING_RATE_PREFIX + "1";
private SamplingFlagUtils() {
}
public static boolean isSamplingFlag(String samplingFlag) {
if (samplingFlag == null) {
return true;
}
// we turn off sampling only when a specific flag was given
// XXX needs better detection mechanism through prefix parsing
if (samplingFlag.startsWith(SAMPLING_RATE_PREFIX)) {
return !SAMPLING_RATE_FALSE.equals(samplingFlag);
}
return true;
}
}