mirror of
https://github.com/ceph/ceph-csi.git
synced 2025-03-10 01:19:29 +00:00
f87d06ed85
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
113 lines
3.6 KiB
Go
113 lines
3.6 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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// Package noop provides an implementation of the OpenTelemetry trace API that
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// produces no telemetry and minimizes used computation resources.
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//
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// Using this package to implement the OpenTelemetry trace API will effectively
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// disable OpenTelemetry.
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//
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// This implementation can be embedded in other implementations of the
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// OpenTelemetry trace API. Doing so will mean the implementation defaults to
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// no operation for methods it does not implement.
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package noop // import "go.opentelemetry.io/otel/trace/noop"
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import (
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"context"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/codes"
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"go.opentelemetry.io/otel/trace"
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"go.opentelemetry.io/otel/trace/embedded"
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)
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var (
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// Compile-time check this implements the OpenTelemetry API.
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_ trace.TracerProvider = TracerProvider{}
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_ trace.Tracer = Tracer{}
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_ trace.Span = Span{}
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)
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// TracerProvider is an OpenTelemetry No-Op TracerProvider.
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type TracerProvider struct{ embedded.TracerProvider }
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// NewTracerProvider returns a TracerProvider that does not record any telemetry.
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func NewTracerProvider() TracerProvider {
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return TracerProvider{}
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}
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// Tracer returns an OpenTelemetry Tracer that does not record any telemetry.
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func (TracerProvider) Tracer(string, ...trace.TracerOption) trace.Tracer {
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return Tracer{}
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}
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// Tracer is an OpenTelemetry No-Op Tracer.
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type Tracer struct{ embedded.Tracer }
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// Start creates a span. The created span will be set in a child context of ctx
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// and returned with the span.
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//
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// If ctx contains a span context, the returned span will also contain that
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// span context. If the span context in ctx is for a non-recording span, that
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// span instance will be returned directly.
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func (t Tracer) Start(ctx context.Context, _ string, _ ...trace.SpanStartOption) (context.Context, trace.Span) {
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span := trace.SpanFromContext(ctx)
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// If the parent context contains a non-zero span context, that span
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// context needs to be returned as a non-recording span
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// (https://github.com/open-telemetry/opentelemetry-specification/blob/3a1dde966a4ce87cce5adf464359fe369741bbea/specification/trace/api.md#behavior-of-the-api-in-the-absence-of-an-installed-sdk).
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var zeroSC trace.SpanContext
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if sc := span.SpanContext(); !sc.Equal(zeroSC) {
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if !span.IsRecording() {
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// If the span is not recording return it directly.
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return ctx, span
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}
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// Otherwise, return the span context needs in a non-recording span.
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span = Span{sc: sc}
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} else {
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// No parent, return a No-Op span with an empty span context.
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span = noopSpanInstance
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}
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return trace.ContextWithSpan(ctx, span), span
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}
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var noopSpanInstance trace.Span = Span{}
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// Span is an OpenTelemetry No-Op Span.
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type Span struct {
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embedded.Span
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sc trace.SpanContext
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}
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// SpanContext returns an empty span context.
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func (s Span) SpanContext() trace.SpanContext { return s.sc }
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// IsRecording always returns false.
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func (Span) IsRecording() bool { return false }
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// SetStatus does nothing.
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func (Span) SetStatus(codes.Code, string) {}
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// SetAttributes does nothing.
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func (Span) SetAttributes(...attribute.KeyValue) {}
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// End does nothing.
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func (Span) End(...trace.SpanEndOption) {}
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// RecordError does nothing.
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func (Span) RecordError(error, ...trace.EventOption) {}
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// AddEvent does nothing.
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func (Span) AddEvent(string, ...trace.EventOption) {}
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// AddLink does nothing.
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func (Span) AddLink(trace.Link) {}
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// SetName does nothing.
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func (Span) SetName(string) {}
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// TracerProvider returns a No-Op TracerProvider.
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func (Span) TracerProvider() trace.TracerProvider { return TracerProvider{} }
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