//CreateAttributesMetadata create the AttributesMetadata from the original metadata
func CreateAttributesMetadata(raw []byte, metadata []byte, preK0 []byte, attributeKeys []string) ([]byte, error) {
cert, err := utils.DERToX509Certificate(raw)
if err != nil {
return nil, err
}
return CreateAttributesMetadataFromCert(cert, metadata, preK0, attributeKeys)
}
//NewAttributesHandlerImpl creates a new AttributesHandlerImpl from a pb.ChaincodeSecurityContext object.
func NewAttributesHandlerImpl(holder chaincodeHolder) (*AttributesHandlerImpl, error) {
// Getting certificate
certRaw, err := holder.GetCallerCertificate()
if err != nil {
return nil, err
}
if certRaw == nil {
return nil, errors.New("The certificate can't be nil.")
}
var tcert *x509.Certificate
tcert, err = utils.DERToX509Certificate(certRaw)
if err != nil {
return nil, err
}
keys := make(map[string][]byte)
/*
TODO: ##attributes-keys-pending This code have be redefined to avoid use of metadata field.
//Getting Attributes Metadata from security context.
var attrsMetadata *attributespb.AttributesMetadata
var rawMetadata []byte
rawMetadata, err = holder.GetCallerMetadata()
if err != nil {
return nil, err
}
if rawMetadata != nil {
attrsMetadata, err = attributes.GetAttributesMetadata(rawMetadata)
if err == nil {
for _, entry := range attrsMetadata.Entries {
keys[entry.AttributeName] = entry.AttributeKey
}
}
}*/
cache := make(map[string][]byte)
return &AttributesHandlerImpl{tcert, cache, keys, nil, false}, nil
}