mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-14 18:30:21 +00:00
9c8de9471e
update kubernetes and its dependencies to v1.26.1 Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
93 lines
3.4 KiB
Go
93 lines
3.4 KiB
Go
/*
|
|
Copyright 2022 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package tracing
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
|
|
"go.opentelemetry.io/otel/attribute"
|
|
"go.opentelemetry.io/otel/trace"
|
|
|
|
utiltrace "k8s.io/utils/trace"
|
|
)
|
|
|
|
const instrumentationScope = "k8s.io/component-base/tracing"
|
|
|
|
// Start creates spans using both OpenTelemetry, and the k8s.io/utils/trace package.
|
|
// It only creates an OpenTelemetry span if the incoming context already includes a span.
|
|
func Start(ctx context.Context, name string, attributes ...attribute.KeyValue) (context.Context, *Span) {
|
|
// If the incoming context already includes an OpenTelemetry span, create a child span with the provided name and attributes.
|
|
// If the caller is not using OpenTelemetry, or has tracing disabled (e.g. with a component-specific feature flag), this is a noop.
|
|
ctx, otelSpan := trace.SpanFromContext(ctx).TracerProvider().Tracer(instrumentationScope).Start(ctx, name, trace.WithAttributes(attributes...))
|
|
// If there is already a utiltrace span in the context, use that as our parent span.
|
|
utilSpan := utiltrace.FromContext(ctx).Nest(name, attributesToFields(attributes)...)
|
|
// Set the trace as active in the context so that subsequent Start calls create nested spans.
|
|
return utiltrace.ContextWithTrace(ctx, utilSpan), &Span{
|
|
otelSpan: otelSpan,
|
|
utilSpan: utilSpan,
|
|
}
|
|
}
|
|
|
|
// Span is a component part of a trace. It represents a single named
|
|
// and timed operation of a workflow being observed.
|
|
// This Span is a combination of an OpenTelemetry and k8s.io/utils/trace span
|
|
// to facilitate the migration to OpenTelemetry.
|
|
type Span struct {
|
|
otelSpan trace.Span
|
|
utilSpan *utiltrace.Trace
|
|
}
|
|
|
|
// AddEvent adds a point-in-time event with a name and attributes.
|
|
func (s *Span) AddEvent(name string, attributes ...attribute.KeyValue) {
|
|
s.otelSpan.AddEvent(name, trace.WithAttributes(attributes...))
|
|
if s.utilSpan != nil {
|
|
s.utilSpan.Step(name, attributesToFields(attributes)...)
|
|
}
|
|
}
|
|
|
|
// End ends the span, and logs if the span duration is greater than the logThreshold.
|
|
func (s *Span) End(logThreshold time.Duration) {
|
|
s.otelSpan.End()
|
|
if s.utilSpan != nil {
|
|
s.utilSpan.LogIfLong(logThreshold)
|
|
}
|
|
}
|
|
|
|
func attributesToFields(attributes []attribute.KeyValue) []utiltrace.Field {
|
|
fields := make([]utiltrace.Field, len(attributes))
|
|
for i := range attributes {
|
|
attr := attributes[i]
|
|
fields[i] = utiltrace.Field{Key: string(attr.Key), Value: attr.Value.AsInterface()}
|
|
}
|
|
return fields
|
|
}
|
|
|
|
// SpanFromContext returns the *Span from the current context. It is composed of the active
|
|
// OpenTelemetry and k8s.io/utils/trace spans.
|
|
func SpanFromContext(ctx context.Context) *Span {
|
|
return &Span{
|
|
otelSpan: trace.SpanFromContext(ctx),
|
|
utilSpan: utiltrace.FromContext(ctx),
|
|
}
|
|
}
|
|
|
|
// ContextWithSpan returns a context with the Span included in the context.
|
|
func ContextWithSpan(ctx context.Context, s *Span) context.Context {
|
|
return trace.ContextWithSpan(utiltrace.ContextWithTrace(ctx, s.utilSpan), s.otelSpan)
|
|
}
|