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This method is only used by the cnmallocator to allocate Swarm-scoped network resources. Its only concrete implementation is in the ovmanager. Other network drivers are implementing it too to adhere to the driverapi.Driver interface, but they all return a 'not implemented' error. Extract this method into a separate interface, and add a dedicated RegisterNetworkAllocator to the driver registry. Update the cnmallocator to load 'network allocators' instead of 'drivers'. Signed-off-by: Albin Kerouanton <albinker@gmail.com>
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
package null
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import (
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"context"
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"sync"
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"github.com/moby/moby/v2/daemon/libnetwork/driverapi"
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"github.com/moby/moby/v2/daemon/libnetwork/scope"
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"github.com/moby/moby/v2/daemon/libnetwork/types"
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)
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const NetworkType = "null"
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type driver struct {
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network string
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sync.Mutex
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}
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// Register registers a new instance of the null driver.
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func Register(r driverapi.Registerer) error {
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return r.RegisterDriver(NetworkType, &driver{}, driverapi.Capability{
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DataScope: scope.Local,
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})
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}
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func (d *driver) CreateNetwork(ctx context.Context, id string, option map[string]any, nInfo driverapi.NetworkInfo, ipV4Data, ipV6Data []driverapi.IPAMData) error {
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d.Lock()
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defer d.Unlock()
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if d.network != "" {
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return types.ForbiddenErrorf("only one instance of %q network is allowed", NetworkType)
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}
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d.network = id
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return nil
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}
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func (d *driver) DeleteNetwork(nid string) error {
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return types.ForbiddenErrorf("network of type %q cannot be deleted", NetworkType)
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}
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func (d *driver) CreateEndpoint(_ context.Context, nid, eid string, ifInfo driverapi.InterfaceInfo, epOptions map[string]any) error {
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return nil
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}
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func (d *driver) DeleteEndpoint(nid, eid string) error {
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return nil
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}
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func (d *driver) EndpointOperInfo(nid, eid string) (map[string]any, error) {
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return make(map[string]any), nil
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}
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// Join method is invoked when a Sandbox is attached to an endpoint.
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func (d *driver) Join(_ context.Context, nid, eid string, sboxKey string, jinfo driverapi.JoinInfo, _, _ map[string]any) error {
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return nil
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}
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// Leave method is invoked when a Sandbox detaches from an endpoint.
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func (d *driver) Leave(nid, eid string) error {
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return nil
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}
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func (d *driver) Type() string {
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return NetworkType
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}
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func (d *driver) IsBuiltIn() bool {
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return true
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}
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