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https://github.com/open-telemetry/opentelemetry-go.git
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9878f3b700
* Add MetricAggregator.Merge() implementations * Update from feedback * Type * Ckpt * Ckpt * Add push controller * Ckpt * Add aggregator interfaces, stdout encoder * Modify basic main.go * Main is working * Batch stdout output * Sum udpate * Rename stdout * Add stateless/stateful Batcher options * Undo a for-loop in the example, remove a done TODO * Update imports * Add note * Rename defaultkeys * Support variable label encoder to speed OpenMetrics/Statsd export * Lint * Doc * Precommit/lint * Simplify Aggregator API * Record->Identifier * Remove export.Record a.k.a. Identifier * Checkpoint * Propagate errors to the SDK, remove a bunch of 'TODO warn' * Checkpoint * Introduce export.Labels * Comments in export/metric.go * Comment * More merge * More doc * Complete example * Lint fixes * Add a testable example * Lint * Let Export return an error * add a basic stdout exporter test * Add measure test; fix aggregator APIs * Use JSON numbers, not strings * Test stdout exporter error * Add a test for the call to RangeTest * Add error handler API to improve correctness test; return errors from RecordOne * Undo the previous -- do not expose errors * Add simple selector variations, test * Repair examples * Test push controller error handling * Add SDK label encoder tests * Add a defaultkeys batcher test * Add an ungrouped batcher test * Lint new tests * Respond to krnowak's feedback * Undo comment * Use concrete receivers for export records and labels, since the constructors return structs not pointers * Bug fix for stateful batchers; clone an aggregator for long term storage * Remove TODO addressed in #318 * Add errors to all aggregator interfaces * Handle ErrNoLastValue case in stdout exporter * Move aggregator API into sdk/export/metric/aggregator * Update all aggregator exported-method comments * Document the aggregator APIs * More aggregator comments * Add multiple updates to the ungrouped test * Fixes for feedback from Gustavo and Liz * Producer->CheckpointSet; add FinishedCollection * Process takes an export.Record * ReadCheckpoint->CheckpointSet * EncodeLabels->Encode * Format a better inconsistent type error; add more aggregator API tests * More RangeTest test coverage * Make benbjohnson/clock a test-only dependency * Handle ErrNoLastValue in stress_test
101 lines
3.2 KiB
Go
101 lines
3.2 KiB
Go
// Copyright 2019, 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 simple // import "go.opentelemetry.io/otel/sdk/metric/selector/simple"
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import (
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export "go.opentelemetry.io/otel/sdk/export/metric"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/array"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/counter"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/ddsketch"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/gauge"
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"go.opentelemetry.io/otel/sdk/metric/aggregator/maxsumcount"
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)
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type (
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selectorInexpensive struct{}
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selectorExact struct{}
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selectorSketch struct {
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config *ddsketch.Config
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}
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)
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var (
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_ export.AggregationSelector = selectorInexpensive{}
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_ export.AggregationSelector = selectorSketch{}
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_ export.AggregationSelector = selectorExact{}
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)
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// NewWithInexpensiveMeasure returns a simple aggregation selector
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// that uses counter, gauge, and maxsumcount aggregators for the three
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// kinds of metric. This selector is faster and uses less memory than
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// the others because maxsumcount does not aggregate quantile
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// information.
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func NewWithInexpensiveMeasure() export.AggregationSelector {
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return selectorInexpensive{}
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}
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// NewWithSketchMeasure returns a simple aggregation selector that
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// uses counter, gauge, and ddsketch aggregators for the three kinds
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// of metric. This selector uses more cpu and memory than the
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// NewWithInexpensiveMeasure because it uses one DDSketch per distinct
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// measure and labelset.
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func NewWithSketchMeasure(config *ddsketch.Config) export.AggregationSelector {
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return selectorSketch{
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config: config,
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}
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}
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// NewWithExactMeasure returns a simple aggregation selector that uses
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// counter, gauge, and array behavior for the three kinds of metric.
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// This selector uses more memory than the NewWithSketchMeasure
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// because it aggregates an array of all values, therefore is able to
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// compute exact quantiles.
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func NewWithExactMeasure() export.AggregationSelector {
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return selectorExact{}
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}
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func (selectorInexpensive) AggregatorFor(descriptor *export.Descriptor) export.Aggregator {
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switch descriptor.MetricKind() {
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case export.GaugeKind:
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return gauge.New()
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case export.MeasureKind:
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return maxsumcount.New()
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default:
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return counter.New()
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}
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}
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func (s selectorSketch) AggregatorFor(descriptor *export.Descriptor) export.Aggregator {
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switch descriptor.MetricKind() {
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case export.GaugeKind:
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return gauge.New()
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case export.MeasureKind:
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return ddsketch.New(s.config, descriptor)
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default:
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return counter.New()
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}
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}
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func (selectorExact) AggregatorFor(descriptor *export.Descriptor) export.Aggregator {
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switch descriptor.MetricKind() {
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case export.GaugeKind:
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return gauge.New()
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case export.MeasureKind:
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return array.New()
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default:
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return counter.New()
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}
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}
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