/
private.go
48 lines (42 loc) · 1.02 KB
/
private.go
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package private
import (
"encoding/hex"
"fmt"
"os"
"github.com/ethereum/go-ethereum/private/constellation"
)
type PrivateTransactionManager interface {
Send(data []byte, from string, to []string) ([]byte, error)
Receive(data []byte) ([]byte, error)
}
func FromEnvironmentOrNil(name string) PrivateTransactionManager {
cfgPath := os.Getenv(name)
if cfgPath == "" {
return nil
}
return constellation.MustNew(cfgPath)
}
var P = FromEnvironmentOrNil("PRIVATE_CONFIG")
func GetPayload(digestHex string) (string, error) {
if P == nil {
return "", fmt.Errorf("PrivateTransactionManager is not enabled")
}
if len(digestHex) < 3 {
return "", fmt.Errorf("Invalid digest hex")
}
if digestHex[:2] == "0x" {
digestHex = digestHex[2:]
}
b, err := hex.DecodeString(digestHex)
if err != nil {
return "", err
}
if len(b) != 64 {
return "", fmt.Errorf("Expected a Quorum digest of length 64, but got %d", len(b))
}
data, err := P.Receive(b)
if err != nil {
return "", err
}
return fmt.Sprintf("0x%x", data), nil
}