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sampling_manager.go
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sampling_manager.go
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// 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 testutils
import (
"sync"
"github.com/uber/jaeger-client-go/thrift-gen/sampling"
)
func newSamplingManager() *samplingManager {
return &samplingManager{
sampling: make(map[string]interface{}),
}
}
type samplingManager struct {
sampling map[string]interface{}
mutex sync.Mutex
}
// GetSamplingStrategy implements handler method of sampling.SamplingManager
func (s *samplingManager) GetSamplingStrategy(serviceName string) (interface{}, error) {
s.mutex.Lock()
defer s.mutex.Unlock()
if strategy, ok := s.sampling[serviceName]; ok {
return strategy, nil
}
return &sampling.SamplingStrategyResponse{
StrategyType: sampling.SamplingStrategyType_PROBABILISTIC,
ProbabilisticSampling: &sampling.ProbabilisticSamplingStrategy{
SamplingRate: 0.01,
}}, nil
}
// AddSamplingStrategy registers a sampling strategy for a service
func (s *samplingManager) AddSamplingStrategy(service string, strategy interface{}) {
s.mutex.Lock()
defer s.mutex.Unlock()
s.sampling[service] = strategy
}