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41 lines
1.4 KiB
Go
41 lines
1.4 KiB
Go
// Copyright The OpenTelemetry 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 aggregate // import "go.opentelemetry.io/otel/sdk/metric/internal/aggregate"
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import (
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"time"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/sdk/metric/metricdata"
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)
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// now is used to return the current local time while allowing tests to
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// override the default time.Now function.
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var now = time.Now
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// aggregator forms an aggregation from a collection of recorded measurements.
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//
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// Aggregators need to be comparable so they can be de-duplicated by the SDK
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// when it creates them for multiple views.
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type aggregator[N int64 | float64] interface {
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// Aggregate records the measurement, scoped by attr, and aggregates it
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// into an aggregation.
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Aggregate(measurement N, attr attribute.Set)
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// Aggregation returns an Aggregation, for all the aggregated
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// measurements made and ends an aggregation cycle.
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Aggregation() metricdata.Aggregation
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}
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