29 lines
903 B
Go
29 lines
903 B
Go
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// Copyright (c) 2018 The Jaeger Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package metrics
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// Histogram that keeps track of a distribution of values.
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type Histogram interface {
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// Records the value passed in.
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Record(float64)
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}
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// NullHistogram that does nothing
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var NullHistogram Histogram = nullHistogram{}
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type nullHistogram struct{}
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func (nullHistogram) Record(float64) {}
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