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/*
* Copyright (c) 2020. Ant Group. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*/
package errdefs
import (
stderrors "errors"
"net"
"syscall"
"github.com/containerd/containerd/errdefs"
"github.com/pkg/errors"
)
var (
ErrAlreadyExists = errdefs.ErrAlreadyExists
ErrNotFound = errdefs.ErrNotFound
ErrInvalidArgument = errors.New("invalid argument")
ErrUnavailable = errors.New("unavailable")
ErrNotImplemented = errors.New("not implemented") // represents not supported and unimplemented
ErrDeviceBusy = errors.New("device busy") // represents not supported and unimplemented
)
// IsAlreadyExists returns true if the error is due to already exists
func IsAlreadyExists(err error) bool {
return errors.Is(err, ErrAlreadyExists)
}
// IsNotFound returns true if the error is due to a missing object
func IsNotFound(err error) bool {
return errors.Is(err, ErrNotFound)
}
// IsConnectionClosed returns true if error is due to connection closed
// this is used when snapshotter closed by sig term
func IsConnectionClosed(err error) bool {
switch err := err.(type) {
case *net.OpError:
return err.Err.Error() == "use of closed network connection"
default:
return false
}
}
func IsErofsMounted(err error) bool {
return stderrors.Is(err, syscall.EBUSY)
}
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