mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-16 10:19:23 +02:00
a1fff3c258
* Add Marshaling implementations for exporters * Changelog * Fix changelog Co-authored-by: Aaron Clawson <MadVikingGod@users.noreply.github.com> Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
114 lines
2.6 KiB
Go
114 lines
2.6 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 otlptrace // import "go.opentelemetry.io/otel/exporters/otlp/otlptrace"
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"sync"
|
|
|
|
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal/tracetransform"
|
|
tracesdk "go.opentelemetry.io/otel/sdk/trace"
|
|
)
|
|
|
|
var (
|
|
errAlreadyStarted = errors.New("already started")
|
|
)
|
|
|
|
// Exporter exports trace data in the OTLP wire format.
|
|
type Exporter struct {
|
|
client Client
|
|
|
|
mu sync.RWMutex
|
|
started bool
|
|
|
|
startOnce sync.Once
|
|
stopOnce sync.Once
|
|
}
|
|
|
|
// ExportSpans exports a batch of spans.
|
|
func (e *Exporter) ExportSpans(ctx context.Context, ss []tracesdk.ReadOnlySpan) error {
|
|
protoSpans := tracetransform.Spans(ss)
|
|
if len(protoSpans) == 0 {
|
|
return nil
|
|
}
|
|
|
|
return e.client.UploadTraces(ctx, protoSpans)
|
|
}
|
|
|
|
// Start establishes a connection to the receiving endpoint.
|
|
func (e *Exporter) Start(ctx context.Context) error {
|
|
var err = errAlreadyStarted
|
|
e.startOnce.Do(func() {
|
|
e.mu.Lock()
|
|
e.started = true
|
|
e.mu.Unlock()
|
|
err = e.client.Start(ctx)
|
|
})
|
|
|
|
return err
|
|
}
|
|
|
|
// Shutdown flushes all exports and closes all connections to the receiving endpoint.
|
|
func (e *Exporter) Shutdown(ctx context.Context) error {
|
|
e.mu.RLock()
|
|
started := e.started
|
|
e.mu.RUnlock()
|
|
|
|
if !started {
|
|
return nil
|
|
}
|
|
|
|
var err error
|
|
|
|
e.stopOnce.Do(func() {
|
|
err = e.client.Stop(ctx)
|
|
e.mu.Lock()
|
|
e.started = false
|
|
e.mu.Unlock()
|
|
})
|
|
|
|
return err
|
|
}
|
|
|
|
var _ tracesdk.SpanExporter = (*Exporter)(nil)
|
|
|
|
// New constructs a new Exporter and starts it.
|
|
func New(ctx context.Context, client Client) (*Exporter, error) {
|
|
exp := NewUnstarted(client)
|
|
if err := exp.Start(ctx); err != nil {
|
|
return nil, err
|
|
}
|
|
return exp, nil
|
|
}
|
|
|
|
// NewUnstarted constructs a new Exporter and does not start it.
|
|
func NewUnstarted(client Client) *Exporter {
|
|
return &Exporter{
|
|
client: client,
|
|
}
|
|
}
|
|
|
|
// MarshalLog is the marshaling function used by the logging system to represent this exporter.
|
|
func (e *Exporter) MarshalLog() interface{} {
|
|
return struct {
|
|
Type string
|
|
Client Client
|
|
}{
|
|
Type: "otlptrace",
|
|
Client: e.client,
|
|
}
|
|
}
|