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package builtin
import (
"net"
"github.com/docker/docker/libnetwork/ipam"
"github.com/docker/docker/libnetwork/ipamapi"
"github.com/docker/docker/libnetwork/ipamutils"
)
var (
// defaultAddressPool Stores user configured subnet list
defaultAddressPool []*net.IPNet
)
// registerBuiltin registers the built-in ipam driver with libnetwork.
func registerBuiltin(ic ipamapi.Registerer) error {
var localAddressPool []*net.IPNet
if len(defaultAddressPool) > 0 {
localAddressPool = append([]*net.IPNet(nil), defaultAddressPool...)
} else {
localAddressPool = ipamutils.GetLocalScopeDefaultNetworks()
}
a, err := ipam.NewAllocator(localAddressPool, ipamutils.GetGlobalScopeDefaultNetworks())
if err != nil {
return err
}
cps := &ipamapi.Capability{RequiresRequestReplay: true}
return ic.RegisterIpamDriverWithCapabilities(ipamapi.DefaultIPAM, a, cps)
}
// SetDefaultIPAddressPool stores default address pool.
func SetDefaultIPAddressPool(addressPool []*ipamutils.NetworkToSplit) error {
nets, err := ipamutils.SplitNetworks(addressPool)
if err != nil {
return err
}
defaultAddressPool = nets
return nil
}
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