forked from open-telemetry/opentelemetry-go-contrib
/
option.go
68 lines (59 loc) · 1.93 KB
/
option.go
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// Copyright Splunk Inc.
//
// 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 internal
import (
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/propagation"
semconv "go.opentelemetry.io/otel/semconv/v1.17.0"
"go.opentelemetry.io/otel/trace"
splunkotel "github.com/signalfx/splunk-otel-go"
)
// Option applies options to a configuration.
type Option interface {
Apply(*Config)
}
// OptionFunc is a generic way to set an option using a func.
type OptionFunc func(*Config)
// Apply applies the configuration option.
func (o OptionFunc) Apply(c *Config) {
o(c)
}
// WithTracerProvider returns an Option that sets the TracerProvider used for
// a configuration.
func WithTracerProvider(tp trace.TracerProvider) Option {
return OptionFunc(func(c *Config) {
c.Tracer = tp.Tracer(
c.instName,
trace.WithInstrumentationVersion(splunkotel.Version()),
trace.WithSchemaURL(semconv.SchemaURL),
)
})
}
// WithAttributes returns an Option that appends attr to the attributes set
// for every span created.
func WithAttributes(attr []attribute.KeyValue) Option {
return OptionFunc(func(c *Config) {
c.DefaultStartOpts = append(
c.DefaultStartOpts,
trace.WithAttributes(attr...),
)
})
}
// WithPropagator returns an Option that sets p as the TextMapPropagator used
// when propagating a span context.
func WithPropagator(p propagation.TextMapPropagator) Option {
return OptionFunc(func(c *Config) {
c.Propagator = p
})
}