go-ceph/rados/errors.go

85 lines
1.9 KiB
Go

package rados
/*
#include <errno.h>
*/
import "C"
import (
"errors"
"fmt"
"github.com/ceph/go-ceph/internal/errutil"
)
// radosError represents an error condition returned from the Ceph RADOS APIs.
type radosError int
// Error returns the error string for the radosError type.
func (e radosError) Error() string {
errno, s := errutil.FormatErrno(int(e))
if s == "" {
return fmt.Sprintf("rados: ret=%d", errno)
}
return fmt.Sprintf("rados: ret=%d, %s", errno, s)
}
func (e radosError) Errno() int {
return int(e)
}
func getError(e C.int) error {
if e == 0 {
return nil
}
return radosError(e)
}
// getErrorIfNegative converts a ceph return code to error if negative.
// This is useful for functions that return a usable positive value on
// success but a negative error number on error.
func getErrorIfNegative(ret C.int) error {
if ret >= 0 {
return nil
}
return getError(ret)
}
// Public go errors:
var (
// ErrNotConnected is returned when functions are called without a RADOS connection
ErrNotConnected = errors.New("RADOS not connected")
// ErrEmptyArgument may be returned if a function argument is passed
// a zero-length slice or map.
ErrEmptyArgument = errors.New("Argument must contain at least one item")
)
// Public radosErrors:
const (
// ErrNotFound indicates a missing resource.
ErrNotFound = radosError(-C.ENOENT)
// ErrPermissionDenied indicates a permissions issue.
ErrPermissionDenied = radosError(-C.EPERM)
// ErrObjectExists indicates that an exclusive object creation failed.
ErrObjectExists = radosError(-C.EEXIST)
// RadosErrorNotFound indicates a missing resource.
//
// Deprecated: use ErrNotFound instead
RadosErrorNotFound = ErrNotFound
// RadosErrorPermissionDenied indicates a permissions issue.
//
// Deprecated: use ErrPermissionDenied instead
RadosErrorPermissionDenied = ErrPermissionDenied
)
// Private errors:
const (
errNameTooLong = radosError(-C.ENAMETOOLONG)
errRange = radosError(-C.ERANGE)
)