/
config_digest.go
47 lines (37 loc) · 1.31 KB
/
config_digest.go
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package managed
import (
"fmt"
"github.com/smartcontractkit/libocr/offchainreporting2plus/types"
)
// Convenience wrapper around OffchainConfigDigester
type prefixCheckConfigDigester struct {
offchainConfigDigester types.OffchainConfigDigester
}
// ConfigDigest method that checks that the computed ConfigDigest's prefix is
// consistent with OffchainConfigDigester.ConfigDigestPrefix
func (d prefixCheckConfigDigester) ConfigDigest(cc types.ContractConfig) (types.ConfigDigest, error) {
prefix, err := d.offchainConfigDigester.ConfigDigestPrefix()
if err != nil {
return types.ConfigDigest{}, err
}
cd, err := d.offchainConfigDigester.ConfigDigest(cc)
if err != nil {
return types.ConfigDigest{}, err
}
if !prefix.IsPrefixOf(cd) {
return types.ConfigDigest{}, fmt.Errorf("ConfigDigest has prefix %s, but wanted prefix %s", types.ConfigDigestPrefixFromConfigDigest(cd), prefix)
}
return cd, nil
}
// Check that the ContractConfig's ConfigDigest matches the one computed
// offchain
func (d prefixCheckConfigDigester) CheckContractConfig(cc types.ContractConfig) error {
goodConfigDigest, err := d.ConfigDigest(cc)
if err != nil {
return err
}
if goodConfigDigest != cc.ConfigDigest {
return fmt.Errorf("ConfigDigest mismatch. Expected %s but got %s", goodConfigDigest, cc.ConfigDigest)
}
return nil
}