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opentelemetry-go/exporters/stdout/exporter.go
Aaron Clawson b09df84a24
Changes stdout to expose the *sdktrace.TracerProvider (#1800)
* Changes stdout to expose the actual tracerProvider

This enables flushing and stopping the exporter.

* updated changelog

* Update CHANGELOG.md

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
2021-04-14 08:51:41 -07:00

97 lines
3.0 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 stdout // import "go.opentelemetry.io/otel/exporters/stdout"
import (
"context"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/metric/global"
"go.opentelemetry.io/otel/sdk/export/metric"
controller "go.opentelemetry.io/otel/sdk/metric/controller/basic"
processor "go.opentelemetry.io/otel/sdk/metric/processor/basic"
"go.opentelemetry.io/otel/sdk/metric/selector/simple"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
)
type Exporter struct {
traceExporter
metricExporter
}
var (
_ metric.Exporter = &Exporter{}
_ sdktrace.SpanExporter = &Exporter{}
)
// NewExporter creates an Exporter with the passed options.
func NewExporter(options ...Option) (*Exporter, error) {
config, err := NewConfig(options...)
if err != nil {
return nil, err
}
return &Exporter{
traceExporter: traceExporter{config: config},
metricExporter: metricExporter{config},
}, nil
}
// NewExportPipeline creates a complete export pipeline with the default
// selectors, processors, and trace registration. It is the responsibility
// of the caller to stop the returned tracer provider and push Controller.
func NewExportPipeline(exportOpts []Option, pushOpts []controller.Option) (*sdktrace.TracerProvider, *controller.Controller, error) {
exporter, err := NewExporter(exportOpts...)
if err != nil {
return nil, nil, err
}
tp := sdktrace.NewTracerProvider(sdktrace.WithBatcher(exporter))
pusher := controller.New(
processor.New(
simple.NewWithInexpensiveDistribution(),
exporter,
),
append(
pushOpts,
controller.WithExporter(exporter),
)...,
)
err = pusher.Start(context.Background())
return tp, pusher, err
}
// InstallNewPipeline creates a complete export pipelines with defaults and
// registers it globally. It is the responsibility of the caller to stop the
// returned tracer provider and push Controller.
//
// Typically this is called as:
//
// pipeline, err := stdout.InstallNewPipeline(stdout.Config{...})
// if err != nil {
// ...
// }
// defer pipeline.Stop()
// ... Done
func InstallNewPipeline(exportOpts []Option, pushOpts []controller.Option) (*sdktrace.TracerProvider, *controller.Controller, error) {
tracerProvider, controller, err := NewExportPipeline(exportOpts, pushOpts)
if err != nil {
return tracerProvider, controller, err
}
otel.SetTracerProvider(tracerProvider)
global.SetMeterProvider(controller.MeterProvider())
return tracerProvider, controller, err
}