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har.go
53 lines (44 loc) · 888 Bytes
/
har.go
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package httptracing
import (
"encoding/json"
"github.com/haileys/go-harlog"
"github.com/superfly/flyctl/terminal"
"net/http"
"os"
)
type harOpt struct {
Path string
Container *harlog.HARContainer
}
var har *harOpt
func Init() {
if path := os.Getenv("FLYCTL_OUTPUT_HAR"); path != "" {
har = &harOpt{
Path: path,
Container: harlog.NewHARContainer(),
}
}
}
func Finish() {
if har == nil {
return
}
harJson, err := json.MarshalIndent(har.Container, "", " ")
if err != nil {
terminal.Warnf("error serializing HAR: %v\n", err)
return
}
err = os.WriteFile(har.Path, harJson, 0644)
if err != nil {
terminal.Warnf("error writing HAR: %v\n", err)
}
}
func NewTransport(transport http.RoundTripper) http.RoundTripper {
if har == nil {
return transport
}
return &harlog.Transport{
Transport: transport,
Container: har.Container,
}
}