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Code Issues Releases Activity

Export NoopSpan and NoopTracer (#92)

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This commit is contained in:
Isobel Redelmeier
2019-08-13 16:03:41 -07:00
committed by rghetia
parent 0db77910a7
commit 56e1a9d1f4
4 changed files with 27 additions and 27 deletions
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2
api/trace/current.go
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@@ -32,5 +32,5 @@ func CurrentSpan(ctx context.Context) Span {
if span, has := ctx.Value(currentSpanKey).(Span); has { if span, has := ctx.Value(currentSpanKey).(Span); has {
return span return span
} }
return noopSpan{} return NoopSpan{}
} }

2
api/trace/global.go
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@@ -27,7 +27,7 @@ func GlobalTracer() Tracer {
if t := global.Load(); t != nil { if t := global.Load(); t != nil {
return t.(Tracer) return t.(Tracer)
} }
return noopTracer{} return NoopTracer{}
} }
// SetGlobalTracer sets provided tracer as a global tracer. // SetGlobalTracer sets provided tracer as a global tracer.

32
api/trace/noop_span.go
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@@ -24,58 +24,58 @@ import (
"go.opentelemetry.io/api/tag" "go.opentelemetry.io/api/tag"
) )
type noopSpan struct { type NoopSpan struct {
} }
var _ Span = (*noopSpan)(nil) var _ Span = (*NoopSpan)(nil)
// SpancContext returns an invalid span context. // SpancContext returns an invalid span context.
func (noopSpan) SpanContext() core.SpanContext { func (NoopSpan) SpanContext() core.SpanContext {
return core.EmptySpanContext() return core.EmptySpanContext()
} }
// IsRecordingEvents always returns false for noopSpan. // IsRecordingEvents always returns false for NoopSpan.
func (noopSpan) IsRecordingEvents() bool { func (NoopSpan) IsRecordingEvents() bool {
return false return false
} }
// SetStatus does nothing. // SetStatus does nothing.
func (noopSpan) SetStatus(status codes.Code) { func (NoopSpan) SetStatus(status codes.Code) {
} }
// SetError does nothing. // SetError does nothing.
func (noopSpan) SetError(v bool) { func (NoopSpan) SetError(v bool) {
} }
// SetAttribute does nothing. // SetAttribute does nothing.
func (noopSpan) SetAttribute(attribute core.KeyValue) { func (NoopSpan) SetAttribute(attribute core.KeyValue) {
} }
// SetAttributes does nothing. // SetAttributes does nothing.
func (noopSpan) SetAttributes(attributes ...core.KeyValue) { func (NoopSpan) SetAttributes(attributes ...core.KeyValue) {
} }
// ModifyAttribute does nothing. // ModifyAttribute does nothing.
func (noopSpan) ModifyAttribute(mutator tag.Mutator) { func (NoopSpan) ModifyAttribute(mutator tag.Mutator) {
} }
// ModifyAttributes does nothing. // ModifyAttributes does nothing.
func (noopSpan) ModifyAttributes(mutators ...tag.Mutator) { func (NoopSpan) ModifyAttributes(mutators ...tag.Mutator) {
} }
// Finish does nothing. // Finish does nothing.
func (noopSpan) Finish() { func (NoopSpan) Finish() {
} }
// Tracer returns noop implementation of Tracer. // Tracer returns noop implementation of Tracer.
func (noopSpan) Tracer() Tracer { func (NoopSpan) Tracer() Tracer {
return noopTracer{} return NoopTracer{}
} }
// AddEvent does nothing. // AddEvent does nothing.
func (noopSpan) AddEvent(ctx context.Context, event event.Event) { func (NoopSpan) AddEvent(ctx context.Context, event event.Event) {
} }
// Event does nothing. // Event does nothing.
func (noopSpan) Event(ctx context.Context, msg string, attrs ...core.KeyValue) { func (NoopSpan) Event(ctx context.Context, msg string, attrs ...core.KeyValue) {
} }

18
api/trace/noop_trace.go
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@@ -20,36 +20,36 @@ import (
"go.opentelemetry.io/api/core" "go.opentelemetry.io/api/core"
) )
type noopTracer struct{} type NoopTracer struct{}
var _ Tracer = noopTracer{} var _ Tracer = NoopTracer{}
// WithResources does nothing and returns noop implementation of Tracer. // WithResources does nothing and returns noop implementation of Tracer.
func (t noopTracer) WithResources(attributes ...core.KeyValue) Tracer { func (t NoopTracer) WithResources(attributes ...core.KeyValue) Tracer {
return t return t
} }
// WithComponent does nothing and returns noop implementation of Tracer. // WithComponent does nothing and returns noop implementation of Tracer.
func (t noopTracer) WithComponent(name string) Tracer { func (t NoopTracer) WithComponent(name string) Tracer {
return t return t
} }
// WithService does nothing and returns noop implementation of Tracer. // WithService does nothing and returns noop implementation of Tracer.
func (t noopTracer) WithService(name string) Tracer { func (t NoopTracer) WithService(name string) Tracer {
return t return t
} }
// WithSpan wraps around execution of func with noop span. // WithSpan wraps around execution of func with noop span.
func (t noopTracer) WithSpan(ctx context.Context, name string, body func(context.Context) error) error { func (t NoopTracer) WithSpan(ctx context.Context, name string, body func(context.Context) error) error {
return body(ctx) return body(ctx)
} }
// Start starts a noop span. // Start starts a noop span.
func (noopTracer) Start(ctx context.Context, name string, opts ...SpanOption) (context.Context, Span) { func (NoopTracer) Start(ctx context.Context, name string, opts ...SpanOption) (context.Context, Span) {
span := noopSpan{} span := NoopSpan{}
return SetCurrentSpan(ctx, span), span return SetCurrentSpan(ctx, span), span
} }
// Inject does nothing. // Inject does nothing.
func (noopTracer) Inject(ctx context.Context, span Span, injector Injector) { func (NoopTracer) Inject(ctx context.Context, span Span, injector Injector) {
} }