traefik/vendor/github.com/docker/docker-credential-helpers/credentials/error.go

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2018-01-22 11:16:03 +00:00
package credentials
const (
// ErrCredentialsNotFound standardizes the not found error, so every helper returns
// the same message and docker can handle it properly.
errCredentialsNotFoundMessage = "credentials not found in native keychain"
// ErrCredentialsMissingServerURL and ErrCredentialsMissingUsername standardize
// invalid credentials or credentials management operations
errCredentialsMissingServerURLMessage = "no credentials server URL"
errCredentialsMissingUsernameMessage = "no credentials username"
)
// errCredentialsNotFound represents an error
// raised when credentials are not in the store.
type errCredentialsNotFound struct{}
// Error returns the standard error message
// for when the credentials are not in the store.
func (errCredentialsNotFound) Error() string {
return errCredentialsNotFoundMessage
}
// NewErrCredentialsNotFound creates a new error
// for when the credentials are not in the store.
func NewErrCredentialsNotFound() error {
return errCredentialsNotFound{}
}
// IsErrCredentialsNotFound returns true if the error
// was caused by not having a set of credentials in a store.
func IsErrCredentialsNotFound(err error) bool {
_, ok := err.(errCredentialsNotFound)
return ok
}
// IsErrCredentialsNotFoundMessage returns true if the error
// was caused by not having a set of credentials in a store.
//
// This function helps to check messages returned by an
// external program via its standard output.
func IsErrCredentialsNotFoundMessage(err string) bool {
return err == errCredentialsNotFoundMessage
}
// errCredentialsMissingServerURL represents an error raised
// when the credentials object has no server URL or when no
// server URL is provided to a credentials operation requiring
// one.
type errCredentialsMissingServerURL struct{}
func (errCredentialsMissingServerURL) Error() string {
return errCredentialsMissingServerURLMessage
}
// errCredentialsMissingUsername represents an error raised
// when the credentials object has no username or when no
// username is provided to a credentials operation requiring
// one.
type errCredentialsMissingUsername struct{}
func (errCredentialsMissingUsername) Error() string {
return errCredentialsMissingUsernameMessage
}
// NewErrCredentialsMissingServerURL creates a new error for
// errCredentialsMissingServerURL.
func NewErrCredentialsMissingServerURL() error {
return errCredentialsMissingServerURL{}
}
// NewErrCredentialsMissingUsername creates a new error for
// errCredentialsMissingUsername.
func NewErrCredentialsMissingUsername() error {
return errCredentialsMissingUsername{}
}
// IsCredentialsMissingServerURL returns true if the error
// was an errCredentialsMissingServerURL.
func IsCredentialsMissingServerURL(err error) bool {
_, ok := err.(errCredentialsMissingServerURL)
return ok
}
// IsCredentialsMissingServerURLMessage checks for an
// errCredentialsMissingServerURL in the error message.
func IsCredentialsMissingServerURLMessage(err string) bool {
return err == errCredentialsMissingServerURLMessage
}
// IsCredentialsMissingUsername returns true if the error
// was an errCredentialsMissingUsername.
func IsCredentialsMissingUsername(err error) bool {
_, ok := err.(errCredentialsMissingUsername)
return ok
}
// IsCredentialsMissingUsernameMessage checks for an
// errCredentialsMissingUsername in the error message.
func IsCredentialsMissingUsernameMessage(err string) bool {
return err == errCredentialsMissingUsernameMessage
}