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constants.go
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constants.go
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// Copyright (c) 2018 The Jaeger Authors.
//
// 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 strategy_store
import (
"github.com/jaegertracing/jaeger/thrift-gen/sampling"
)
const (
// samplerTypeProbabilistic is the type of sampler that samples traces
// with a certain fixed probability.
samplerTypeProbabilistic = "probabilistic"
// samplerTypeRateLimiting is the type of sampler that samples
// only up to a fixed number of traces per second.
samplerTypeRateLimiting = "ratelimiting"
// defaultSamplingProbability is the default sampling probability the
// Strategy Store will use if none is provided.
defaultSamplingProbability = 0.001
)
// defaultStrategy is the default sampling strategy the Strategy Store will return
// if none is provided.
func defaultStrategyResponse() *sampling.SamplingStrategyResponse {
return &sampling.SamplingStrategyResponse{
StrategyType: sampling.SamplingStrategyType_PROBABILISTIC,
ProbabilisticSampling: &sampling.ProbabilisticSamplingStrategy{
SamplingRate: defaultSamplingProbability,
},
}
}
func defaultStrategies() *storedStrategies {
s := &storedStrategies{
serviceStrategies: make(map[string]*sampling.SamplingStrategyResponse),
}
s.defaultStrategy = defaultStrategyResponse()
return s
}