package auth import ( "errors" "golib.gaore.com/GaoreGo/gaore-common-sdk-go/sdk/auth/credentials" "golib.gaore.com/GaoreGo/gaore-common-sdk-go/sdk/auth/signers" "golib.gaore.com/GaoreGo/gaore-common-sdk-go/sdk/requests" "golib.gaore.com/GaoreGo/gaore-common-sdk-go/sdk/responses" ) type Signer interface { GetName() string Sign(stringToSign, secretSuffix string) string } func NewSignerWithCredential(credential Credential, commonApi func(request *requests.CommonRequest, signer interface{}) (response *responses.CommonResponse, err error)) (signer Signer, err error) { switch instance := credential.(type) { case *credentials.AccessKeyCredential: signer = signers.NewAccessKeySigner(instance) default: err = errors.New("UnsupportedCredentialErrorCode = SDK.UnsupportedCredential") } return } func Sign(request requests.AcsRequest, signer Signer, regionId string) (err error) { }