95 lines
2.7 KiB
Go
95 lines
2.7 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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// This file contains metrics to record dropped data via memory limiter,
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// the package and its int wouldn't be necessary when proper dependencies are
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// exposed via packages.
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package memorylimiter
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import (
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"sync"
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"go.opencensus.io/stats"
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"go.opencensus.io/stats/view"
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"go.opencensus.io/tag"
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)
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// Keys and stats for telemetry.
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var (
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TagExporterNameKey, _ = tag.NewKey("exporter")
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StatDroppedSpanCount = stats.Int64(
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"spans_dropped",
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"counts the number of spans dropped",
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stats.UnitDimensionless)
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StatDroppedMetricCount = stats.Int64(
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"metrics_dropped",
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"counts the number of metrics dropped",
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stats.UnitDimensionless)
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)
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var initOnce sync.Once
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func initMetrics() {
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initOnce.Do(func() {
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tagKeys := []tag.Key{
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TagExporterNameKey,
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}
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droppedSpanBatchesView := &view.View{
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Name: "batches_dropped",
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Measure: StatDroppedSpanCount,
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Description: "The number of span batches dropped.",
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TagKeys: tagKeys,
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Aggregation: view.Count(),
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}
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droppedSpansView := &view.View{
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Name: StatDroppedSpanCount.Name(),
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Measure: StatDroppedSpanCount,
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Description: "The number of spans dropped.",
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TagKeys: tagKeys,
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Aggregation: view.Sum(),
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}
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droppedMetricBatchesView := &view.View{
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Name: "batches_dropped",
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Measure: StatDroppedMetricCount,
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Description: "The number of metric batches dropped.",
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TagKeys: tagKeys,
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Aggregation: view.Count(),
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}
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droppedMetricsView := &view.View{
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Name: StatDroppedMetricCount.Name(),
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Measure: StatDroppedMetricCount,
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Description: "The number of metrics dropped.",
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TagKeys: tagKeys,
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Aggregation: view.Sum(),
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}
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view.Register(droppedSpanBatchesView, droppedSpansView, droppedMetricBatchesView, droppedMetricsView)
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})
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}
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// statsTagsForBatch creates a tag.Mutator that can be used to add a metric
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// label with the processorName to context.Context via stats.RecordWithTags
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// function. This ensures uniformity of labels for the metrics.
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func statsTagsForBatch(processorName string) []tag.Mutator {
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statsTags := []tag.Mutator{
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tag.Upsert(TagExporterNameKey, processorName),
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}
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return statsTags
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}
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