RegisterReporter registers given reporter as global reporter.

ErrAlreadyExists indicates an attempt to create an entity which is failed because such entity already exists.

ErrConnFailed shows that connection to a resource failed.

ErrInvalidArgument indicates that client has specified an invalid argument.

ErrNotFound indicates that requested entity can not be found.

ErrUnauthenticated indicates the request does not have valid authentication credentials to perform the operation.

ErrUnauthorized indicates the caller does not have permission to execute the specified operation.

ErrUnavailable indicates that the service is currently unavailable.

ErrorReporter reports about errors.

Error type represents package level errors.