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# Copyright (c) 2016 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.
namespace cpp jaegertracing.sampling_manager.thrift
namespace java io.jaegertracing.thrift.sampling_manager
namespace php Jaeger.Thrift.Agent
namespace netcore Jaeger.Thrift.Agent
enum SamplingStrategyType { PROBABILISTIC, RATE_LIMITING }
// ProbabilisticSamplingStrategy randomly samples a fixed percentage of all traces.
struct ProbabilisticSamplingStrategy {
1: required double samplingRate // percentage expressed as rate (0..1]
}
// RateLimitingStrategy samples traces with a rate that does not exceed specified number of traces per second.
// The recommended implementation approach is leaky bucket.
struct RateLimitingSamplingStrategy {
1: required i16 maxTracesPerSecond
}
// OperationSamplingStrategy defines a sampling strategy that randomly samples a fixed percentage of operation traces.
struct OperationSamplingStrategy {
1: required string operation
2: required ProbabilisticSamplingStrategy probabilisticSampling
}
// PerOperationSamplingStrategies defines a sampling strategy per each operation name in the service
// with a guaranteed lower bound per second. Once the lower bound is met, operations are randomly sampled
// at a fixed percentage.
struct PerOperationSamplingStrategies {
1: required double defaultSamplingProbability
2: required double defaultLowerBoundTracesPerSecond
3: required list<OperationSamplingStrategy> perOperationStrategies
4: optional double defaultUpperBoundTracesPerSecond
}
struct SamplingStrategyResponse {
1: required SamplingStrategyType strategyType
2: optional ProbabilisticSamplingStrategy probabilisticSampling
3: optional RateLimitingSamplingStrategy rateLimitingSampling
4: optional PerOperationSamplingStrategies operationSampling
}
service SamplingManager {
SamplingStrategyResponse getSamplingStrategy(1: string serviceName)
}
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