48 lines
876 B
Go
48 lines
876 B
Go
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package diag
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import (
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"fmt"
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"net"
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"github.com/vishvananda/netlink"
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)
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type link struct {
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children []Node
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ifname string
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}
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func (l *link) String() string {
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return "link/" + l.ifname
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}
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func (l *link) Then(t Node) Node {
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l.children = append(l.children, t)
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return l
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}
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func (l *link) Children() []Node {
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return l.children
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}
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func (l *link) Evaluate() (string, error) {
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link, err := netlink.LinkByName(l.ifname)
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if err != nil {
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return "", err
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}
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attrs := link.Attrs()
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// TODO: check RUNNING as well?
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if attrs.Flags&net.FlagUp == 0 {
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return "", fmt.Errorf("link %s not UP", l.ifname)
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}
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return fmt.Sprintf("%d rx, %d tx", attrs.Statistics.RxPackets, attrs.Statistics.TxPackets), nil
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}
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// Link returns a Node which succeeds when the specified network interface is in
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// state UP and RUNNING.
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func Link(ifname string) Node {
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return &link{ifname: ifname}
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}
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