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|
package system
import (
"context"
"net"
"github.com/goss-org/goss/util"
)
type Interface interface {
Name() string
Exists() (bool, error)
Addrs() ([]string, error)
MTU() (int, error)
}
type DefInterface struct {
name string
loaded bool
exists bool
iface *net.Interface
err error
}
func NewDefInterface(_ context.Context, name string, systei *System, config util.Config) Interface {
return &DefInterface{
name: name,
}
}
func (i *DefInterface) setup() error {
if i.loaded {
return i.err
}
i.loaded = true
iface, err := net.InterfaceByName(i.name)
if err != nil {
i.exists = false
i.err = err
return i.err
}
i.iface = iface
i.exists = true
return nil
}
func (i *DefInterface) ID() string {
return i.name
}
func (i *DefInterface) Name() string {
return i.name
}
func (i *DefInterface) Exists() (bool, error) {
if err := i.setup(); err != nil {
return false, nil
}
return i.exists, nil
}
func (i *DefInterface) Addrs() ([]string, error) {
if err := i.setup(); err != nil {
return nil, err
}
addrs, err := i.iface.Addrs()
if err != nil {
return nil, err
}
var ret []string
for _, addr := range addrs {
ret = append(ret, addr.String())
}
return ret, nil
}
func (i *DefInterface) MTU() (int, error) {
if err := i.setup(); err != nil {
return 0, err
}
return i.iface.MTU, nil
}
|
