lotus/node/modules/tracer/json_transport.go

42 lines
777 B
Go

package tracer
import (
"encoding/json"
"fmt"
"os"
)
type jsonTracerTransport struct {
out *os.File
}
func NewJsonTracerTransport(file string) (TracerTransport, error) {
out, err := os.OpenFile(file, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0660)
if err != nil {
return nil, err
}
return &jsonTracerTransport{
out: out,
}, nil
}
func (jtt *jsonTracerTransport) Transport(evt TracerTransportEvent) error {
var e interface{}
if evt.lotusTraceEvent != nil {
e = *evt.lotusTraceEvent
} else if evt.pubsubTraceEvent != nil {
e = *evt.pubsubTraceEvent
} else {
return nil
}
jsonEvt, err := json.Marshal(e)
if err != nil {
return fmt.Errorf("error while marshaling event: %s", err)
}
_, err = jtt.out.WriteString(string(jsonEvt) + "\n")
return err
}