/usr/share/gocode/src/github.com/docker/libnetwork/drivers/solaris/overlay/ovmanager/ovmanager.go is in golang-github-docker-libnetwork-dev 0.8.0-dev.2+git20170202.599.45b4086-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import (
"fmt"
"net"
"strconv"
"strings"
"sync"
"github.com/Sirupsen/logrus"
"github.com/docker/libnetwork/datastore"
"github.com/docker/libnetwork/discoverapi"
"github.com/docker/libnetwork/driverapi"
"github.com/docker/libnetwork/idm"
"github.com/docker/libnetwork/netlabel"
"github.com/docker/libnetwork/types"
)
const (
networkType = "overlay"
vxlanIDStart = 256
vxlanIDEnd = (1 << 24) - 1
)
type networkTable map[string]*network
type driver struct {
config map[string]interface{}
networks networkTable
store datastore.DataStore
vxlanIdm *idm.Idm
sync.Mutex
}
type subnet struct {
subnetIP *net.IPNet
gwIP *net.IPNet
vni uint32
}
type network struct {
id string
driver *driver
subnets []*subnet
sync.Mutex
}
// Init registers a new instance of overlay driver
func Init(dc driverapi.DriverCallback, config map[string]interface{}) error {
var err error
c := driverapi.Capability{
DataScope: datastore.GlobalScope,
}
d := &driver{
networks: networkTable{},
config: config,
}
d.vxlanIdm, err = idm.New(nil, "vxlan-id", vxlanIDStart, vxlanIDEnd)
if err != nil {
return fmt.Errorf("failed to initialize vxlan id manager: %v", err)
}
return dc.RegisterDriver(networkType, d, c)
}
func (d *driver) NetworkAllocate(id string, option map[string]string, ipV4Data, ipV6Data []driverapi.IPAMData) (map[string]string, error) {
if id == "" {
return nil, fmt.Errorf("invalid network id for overlay network")
}
if ipV4Data == nil {
return nil, fmt.Errorf("empty ipv4 data passed during overlay network creation")
}
n := &network{
id: id,
driver: d,
subnets: []*subnet{},
}
opts := make(map[string]string)
vxlanIDList := make([]uint32, 0, len(ipV4Data))
for key, val := range option {
if key == netlabel.OverlayVxlanIDList {
logrus.Debugf("overlay network option: %s", val)
valStrList := strings.Split(val, ",")
for _, idStr := range valStrList {
vni, err := strconv.Atoi(idStr)
if err != nil {
return nil, fmt.Errorf("invalid vxlan id value %q passed", idStr)
}
vxlanIDList = append(vxlanIDList, uint32(vni))
}
} else {
opts[key] = val
}
}
for i, ipd := range ipV4Data {
s := &subnet{
subnetIP: ipd.Pool,
gwIP: ipd.Gateway,
}
if len(vxlanIDList) > i {
s.vni = vxlanIDList[i]
}
if err := n.obtainVxlanID(s); err != nil {
n.releaseVxlanID()
return nil, fmt.Errorf("could not obtain vxlan id for pool %s: %v", s.subnetIP, err)
}
n.subnets = append(n.subnets, s)
}
val := fmt.Sprintf("%d", n.subnets[0].vni)
for _, s := range n.subnets[1:] {
val = val + fmt.Sprintf(",%d", s.vni)
}
opts[netlabel.OverlayVxlanIDList] = val
d.Lock()
d.networks[id] = n
d.Unlock()
return opts, nil
}
func (d *driver) NetworkFree(id string) error {
if id == "" {
return fmt.Errorf("invalid network id passed while freeing overlay network")
}
d.Lock()
n, ok := d.networks[id]
d.Unlock()
if !ok {
return fmt.Errorf("overlay network with id %s not found", id)
}
// Release all vxlan IDs in one shot.
n.releaseVxlanID()
d.Lock()
delete(d.networks, id)
d.Unlock()
return nil
}
func (n *network) obtainVxlanID(s *subnet) error {
var (
err error
vni uint64
)
n.Lock()
vni = uint64(s.vni)
n.Unlock()
if vni == 0 {
vni, err = n.driver.vxlanIdm.GetID()
if err != nil {
return err
}
n.Lock()
s.vni = uint32(vni)
n.Unlock()
return nil
}
return n.driver.vxlanIdm.GetSpecificID(vni)
}
func (n *network) releaseVxlanID() {
n.Lock()
vnis := make([]uint32, 0, len(n.subnets))
for _, s := range n.subnets {
vnis = append(vnis, s.vni)
s.vni = 0
}
n.Unlock()
for _, vni := range vnis {
n.driver.vxlanIdm.Release(uint64(vni))
}
}
func (d *driver) CreateNetwork(id string, option map[string]interface{}, nInfo driverapi.NetworkInfo, ipV4Data, ipV6Data []driverapi.IPAMData) error {
return types.NotImplementedErrorf("not implemented")
}
func (d *driver) EventNotify(etype driverapi.EventType, nid, tableName, key string, value []byte) {
}
func (d *driver) DeleteNetwork(nid string) error {
return types.NotImplementedErrorf("not implemented")
}
func (d *driver) CreateEndpoint(nid, eid string, ifInfo driverapi.InterfaceInfo, epOptions map[string]interface{}) error {
return types.NotImplementedErrorf("not implemented")
}
func (d *driver) DeleteEndpoint(nid, eid string) error {
return types.NotImplementedErrorf("not implemented")
}
func (d *driver) EndpointOperInfo(nid, eid string) (map[string]interface{}, error) {
return nil, types.NotImplementedErrorf("not implemented")
}
// Join method is invoked when a Sandbox is attached to an endpoint.
func (d *driver) Join(nid, eid string, sboxKey string, jinfo driverapi.JoinInfo, options map[string]interface{}) error {
return types.NotImplementedErrorf("not implemented")
}
// Leave method is invoked when a Sandbox detaches from an endpoint.
func (d *driver) Leave(nid, eid string) error {
return types.NotImplementedErrorf("not implemented")
}
func (d *driver) Type() string {
return networkType
}
func (d *driver) IsBuiltIn() bool {
return true
}
// DiscoverNew is a notification for a new discovery event, such as a new node joining a cluster
func (d *driver) DiscoverNew(dType discoverapi.DiscoveryType, data interface{}) error {
return types.NotImplementedErrorf("not implemented")
}
// DiscoverDelete is a notification for a discovery delete event, such as a node leaving a cluster
func (d *driver) DiscoverDelete(dType discoverapi.DiscoveryType, data interface{}) error {
return types.NotImplementedErrorf("not implemented")
}
func (d *driver) ProgramExternalConnectivity(nid, eid string, options map[string]interface{}) error {
return types.NotImplementedErrorf("not implemented")
}
func (d *driver) RevokeExternalConnectivity(nid, eid string) error {
return types.NotImplementedErrorf("not implemented")
}
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