105 lines
2.0 KiB
Go
105 lines
2.0 KiB
Go
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package gelfexporter
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import (
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"context"
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"fmt"
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"sync"
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"time"
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"go.opentelemetry.io/otel/sdk/trace"
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"go.opentelemetry.io/otel/sdk/trace/tracetest"
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"gopkg.in/Graylog2/go-gelf.v2/gelf"
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)
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var zeroTime time.Time
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var _ trace.SpanExporter = &Exporter{}
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// New creates an Exporter with the passed options.
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func New(options ...Option) (*Exporter, error) {
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cfg, err := newConfig(options...)
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if err != nil {
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return nil, err
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}
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writer, err := gelf.NewUDPWriter(cfg.GelfUrl)
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if err != nil {
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return nil, err
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}
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return &Exporter{
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gelfWriter: writer,
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}, nil
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}
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// Exporter is an implementation of trace.SpanSyncer that writes spans to stdout.
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type Exporter struct {
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timestamps bool
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gelfWriter *gelf.UDPWriter
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stoppedMu sync.RWMutex
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stopped bool
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}
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// ExportSpans writes spans in json format to stdout.
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func (e *Exporter) ExportSpans(ctx context.Context, spans []trace.ReadOnlySpan) error {
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if err := ctx.Err(); err != nil {
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return err
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}
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e.stoppedMu.RLock()
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stopped := e.stopped
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e.stoppedMu.RUnlock()
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if stopped {
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return nil
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}
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if len(spans) == 0 {
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return nil
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}
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stubs := tracetest.SpanStubsFromReadOnlySpans(spans)
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for i := range stubs {
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stub := &stubs[i]
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// Remove timestamps
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if !e.timestamps {
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stub.StartTime = zeroTime
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stub.EndTime = zeroTime
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for j := range stub.Events {
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ev := &stub.Events[j]
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ev.Time = zeroTime
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}
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}
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fmt.Printf("stub: %v\n", stub)
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Log(e.gelfWriter, GELFMessage{
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Host: "test",
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ShortMessage: "test",
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})
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}
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return nil
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}
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// Shutdown is called to stop the exporter, it performs no action.
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func (e *Exporter) Shutdown(ctx context.Context) error {
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e.stoppedMu.Lock()
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e.stopped = true
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e.stoppedMu.Unlock()
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return nil
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}
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// // MarshalLog is the marshaling function used by the logging system to represent this Exporter.
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// func (e *Exporter) MarshalLog() interface{} {
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// return struct {
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// Type string
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// WithTimestamps bool
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// }{
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// Type: "stdout",
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// WithTimestamps: e.timestamps,
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// }
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// }
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