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35 lines
998 B
Go
35 lines
998 B
Go
// Copyright 2020 fatedier, fatedier@gmail.com
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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 metric
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// GaugeMetric represents a single numerical value that can arbitrarily go up
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// and down.
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type GaugeMetric interface {
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Inc()
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Dec()
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Set(float64)
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}
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// CounterMetric represents a single numerical value that only ever
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// goes up.
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type CounterMetric interface {
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Inc()
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}
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// HistogramMetric counts individual observations.
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type HistogramMetric interface {
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Observe(float64)
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}
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