Function convertPerfData

internal/driver/fetch.go:574–590

convertPerfData converts the file at path which should be in perf.data format using the perf_to_profile tool and returns the file containing the profile.proto formatted data.

(perfPath string, ui plugin.UI)

// using the perf_to_profile tool and returns the file containing the
// profile.proto formatted data.
func convertPerfData(perfPath string, ui plugin.UI) (*os.File, error) {
	ui.Print(fmt.Sprintf(
		"Converting %s to a profile.proto... (May take a few minutes)",
		perfPath))
	profile, err := newTempFile(os.TempDir(), "pprof_", ".pb.gz")
	if err != nil {
		return nil, err
	}
	deferDeleteTempFile(profile.Name())
	cmd := exec.Command("perf_to_profile", "-i", perfPath, "-o", profile.Name(), "-f")
	cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
	if err := cmd.Run(); err != nil {
		profile.Close()
		return nil, fmt.Errorf("failed to convert perf.data file. Try github.com/google/perf_data_converter: %v", err)
	}
	return profile, nil
}

// adjustURL validates if a profile source is a URL and returns an
// cleaned up URL and the timeout to use for retrieval over HTTP.