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mirror of https://github.com/open-telemetry/opentelemetry-go.git synced 2024-12-12 10:04:29 +02:00
opentelemetry-go/trace_noop.go
Tyler Yahn ec300b28ad
Update Span API event methods (#1254)
* Update Span API event methods

Remove the context argument from the event methods. It is unused and can
be added back in as a passed option if needed in the future.

Update AddEvent to accept a required name and a set of options. These
options are the new EventOption type that can be used to configure a
SpanConfig Timestamp and Attributes.

Remove the AddEventWithTimestamp method as it is redundant to calling
AddEvent with a WithTimestamp option.

Update RecordError to also accept the EventOptions.

* Add changes to CHANGELOG

* Add LifeCycleOption

Use the LifeCycleOption to encapsulate the options passed to a span for
life cycle events.
2020-10-16 08:09:27 -07:00

85 lines
2.4 KiB
Go

// Copyright The OpenTelemetry 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 otel
import (
"context"
"go.opentelemetry.io/otel/codes"
"go.opentelemetry.io/otel/label"
)
// NewNoopTracerProvider returns an implementation of TracerProvider that
// performs no operations. The Tracer and Spans created from the returned
// TracerProvider also perform no operations.
func NewNoopTracerProvider() TracerProvider {
return noopTracerProvider{}
}
type noopTracerProvider struct{}
var _ TracerProvider = noopTracerProvider{}
// Tracer returns noop implementation of Tracer.
func (p noopTracerProvider) Tracer(string, ...TracerOption) Tracer {
return noopTracer{}
}
// noopTracer is an implementation of Tracer that preforms no operations.
type noopTracer struct{}
var _ Tracer = noopTracer{}
// Start starts a noop span.
func (t noopTracer) Start(ctx context.Context, name string, _ ...SpanOption) (context.Context, Span) {
span := noopSpan{}
return ContextWithSpan(ctx, span), span
}
// noopSpan is an implementation of Span that preforms no operations.
type noopSpan struct{}
var _ noopSpan = noopSpan{}
// SpanContext returns an empty span context.
func (noopSpan) SpanContext() SpanContext { return SpanContext{} }
// IsRecording always returns false.
func (noopSpan) IsRecording() bool { return false }
// SetStatus does nothing.
func (noopSpan) SetStatus(codes.Code, string) {}
// SetError does nothing.
func (noopSpan) SetError(bool) {}
// SetAttributes does nothing.
func (noopSpan) SetAttributes(...label.KeyValue) {}
// End does nothing.
func (noopSpan) End(...SpanOption) {}
// RecordError does nothing.
func (noopSpan) RecordError(error, ...EventOption) {}
// Tracer returns the Tracer that created this Span.
func (noopSpan) Tracer() Tracer { return noopTracer{} }
// AddEvent does nothing.
func (noopSpan) AddEvent(string, ...EventOption) {}
// SetName does nothing.
func (noopSpan) SetName(string) {}