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a1ce7e5f0d
* Combine spatially aggregated precomputed vals Fix #3439 When an attribute filter drops a distinguishing attribute during the aggregation of a precomputed sum add that value to existing, instead of just setting the value as an override (current behavior). * Ignore false positive lint error and test method * Add fix to changelog * Handle edge case of exact set after filter * Fix filter and measure algo for precomp * Add tests for precomp sums * Unify precomputedMap * Adds example from supplimental guide * Fixes for lint * Update sdk/metric/meter_example_test.go * Fix async example test * Reduce duplicate code in TestAsynchronousExample * Clarify naming and documentation * Fix spelling errors * Add a noop filter to default view Co-authored-by: Chester Cheung <cheung.zhy.csu@gmail.com> Co-authored-by: Aaron Clawson <3766680+MadVikingGod@users.noreply.github.com>
60 lines
2.3 KiB
Go
60 lines
2.3 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 internal // import "go.opentelemetry.io/otel/sdk/metric/internal"
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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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// precomputeAggregator is an Aggregator that receives values to aggregate that
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// have been pre-computed by the caller.
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type precomputeAggregator[N int64 | float64] interface {
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// The Aggregate method of the embedded Aggregator is used to record
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// pre-computed measurements, scoped by attributes that have not been
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// filtered by an attribute filter.
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Aggregator[N]
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// aggregateFiltered records measurements scoped by attributes that have
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// been filtered by an attribute filter.
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//
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// Pre-computed measurements of filtered attributes need to be recorded
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// separate from those that haven't been filtered so they can be added to
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// the non-filtered pre-computed measurements in a collection cycle and
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// then resets after the cycle (the non-filtered pre-computed measurements
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// are not reset).
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aggregateFiltered(N, attribute.Set)
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}
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