1// Copyright The OpenTelemetry Authors
 2// SPDX-License-Identifier: Apache-2.0
 3
 4package sdk
 5
 6import (
 7	"go.opentelemetry.io/otel/trace"
 8	"go.opentelemetry.io/otel/trace/noop"
 9)
10
11// TracerProvider returns an auto-instrumentable [trace.TracerProvider].
12//
13// If an [go.opentelemetry.io/auto.Instrumentation] is configured to instrument
14// the process using the returned TracerProvider, all of the telemetry it
15// produces will be processed and handled by that Instrumentation. By default,
16// if no Instrumentation instruments the TracerProvider it will not generate
17// any trace telemetry.
18func TracerProvider() trace.TracerProvider { return tracerProviderInstance }
19
20var tracerProviderInstance = new(tracerProvider)
21
22type tracerProvider struct{ noop.TracerProvider }
23
24var _ trace.TracerProvider = tracerProvider{}
25
26func (p tracerProvider) Tracer(name string, opts ...trace.TracerOption) trace.Tracer {
27	cfg := trace.NewTracerConfig(opts...)
28	return tracer{
29		name:      name,
30		version:   cfg.InstrumentationVersion(),
31		schemaURL: cfg.SchemaURL(),
32	}
33}