qemu-metadata-api: allow building without cgo dependencies for linting

hack/qemu-metadata-api/virtwrapper/virtwrapper_cgo.go

@@ -0,0 +1,56 @@
+//go:build cgo
+
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
+package virtwrapper
+
+import "libvirt.org/go/libvirt"
+
+// Connect wraps a libvirt connection.
+type Connect struct {
+	Conn *libvirt.Connect
+}
+
+// LookupNetworkByName looks up a network by name.
+func (c *Connect) LookupNetworkByName(name string) (*Network, error) {
+	net, err := c.Conn.LookupNetworkByName(name)
+	if err != nil {
+		return nil, err
+	}
+	return &Network{Net: net}, nil
+}
+
+// Network wraps a libvirt network.
+type Network struct {
+	Net virNetwork
+}
+
+// GetDHCPLeases returns the underlying DHCP leases.
+func (n *Network) GetDHCPLeases() ([]NetworkDHCPLease, error) {
+	leases, err := n.Net.GetDHCPLeases()
+	if err != nil {
+		return nil, err
+	}
+	ret := make([]NetworkDHCPLease, len(leases))
+	for i, l := range leases {
+		ret[i] = NetworkDHCPLease{
+			IPaddr:   l.IPaddr,
+			Hostname: l.Hostname,
+		}
+	}
+	return ret, nil
+}
+
+// Free the network resource.
+func (n *Network) Free() {
+	_ = n.Net.Free()
+}
+
+type virNetwork interface {
+	GetDHCPLeases() ([]libvirt.NetworkDHCPLease, error)
+	Free() error
+}