forked from TrueCloudLab/restic
69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
// Copyright 2018, OpenCensus 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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//
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package stats
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import (
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"context"
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"go.opencensus.io/exemplar"
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"go.opencensus.io/stats/internal"
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"go.opencensus.io/tag"
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)
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func init() {
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internal.SubscriptionReporter = func(measure string) {
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mu.Lock()
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measures[measure].subscribe()
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mu.Unlock()
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}
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}
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// Record records one or multiple measurements with the same context at once.
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// If there are any tags in the context, measurements will be tagged with them.
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func Record(ctx context.Context, ms ...Measurement) {
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recorder := internal.DefaultRecorder
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if recorder == nil {
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return
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}
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if len(ms) == 0 {
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return
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}
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record := false
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for _, m := range ms {
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if m.desc.subscribed() {
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record = true
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break
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}
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}
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if !record {
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return
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}
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recorder(tag.FromContext(ctx), ms, exemplar.AttachmentsFromContext(ctx))
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}
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// RecordWithTags records one or multiple measurements at once.
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//
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// Measurements will be tagged with the tags in the context mutated by the mutators.
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// RecordWithTags is useful if you want to record with tag mutations but don't want
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// to propagate the mutations in the context.
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func RecordWithTags(ctx context.Context, mutators []tag.Mutator, ms ...Measurement) error {
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ctx, err := tag.New(ctx, mutators...)
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if err != nil {
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return err
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}
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Record(ctx, ms...)
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return nil
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}
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