// Create a new network
func (d *driver) CreateNetwork(id string, option map[string]interface{}, nInfo driverapi.NetworkInfo, ipV4Data, ipV6Data []driverapi.IPAMData) error {
if _, err := d.getNetwork(id); err == nil {
return types.ForbiddenErrorf("network %s exists", id)
}
genData, ok := option[netlabel.GenericData].(map[string]string)
if !ok {
return fmt.Errorf("Unknown generic data option")
}
// Parse and validate the config. It should not conflict with existing networks' config
config, err := d.parseNetworkOptions(id, genData)
if err != nil {
return err
}
err = config.processIPAM(id, ipV4Data, ipV6Data)
if err != nil {
return err
}
network := &hnsNetwork{
id: config.ID,
endpoints: make(map[string]*hnsEndpoint),
config: config,
driver: d,
}
d.Lock()
d.networks[config.ID] = network
d.Unlock()
// A non blank hnsid indicates that the network was discovered
// from HNS. No need to call HNS if this network was discovered
// from HNS
if config.HnsID == "" {
subnets := []hcsshim.Subnet{}
for _, ipData := range ipV4Data {
subnet := hcsshim.Subnet{
AddressPrefix: ipData.Pool.String(),
}
if ipData.Gateway != nil {
subnet.GatewayAddress = ipData.Gateway.IP.String()
}
subnets = append(subnets, subnet)
}
network := &hcsshim.HNSNetwork{
Name: config.Name,
Type: d.name,
Subnets: subnets,
NetworkAdapterName: config.NetworkAdapterName,
}
if network.Name == "" {
network.Name = id
}
configurationb, err := json.Marshal(network)
if err != nil {
return err
}
configuration := string(configurationb)
log.Debugf("HNSNetwork Request =%v Address Space=%v", configuration, subnets)
hnsresponse, err := hcsshim.HNSNetworkRequest("POST", "", configuration)
if err != nil {
return err
}
config.HnsID = hnsresponse.Id
genData[HNSID] = config.HnsID
}
return nil
}
func (d *driver) findHnsNetwork(n *network) error {
ln, err := d.getLocalNetworkFromStore(n.id)
if err != nil {
return err
}
if ln == nil {
subnets := []hcsshim.Subnet{}
for _, s := range n.subnets {
subnet := hcsshim.Subnet{
AddressPrefix: s.subnetIP.String(),
}
if s.gwIP != nil {
subnet.GatewayAddress = s.gwIP.IP.String()
}
vsidPolicy, err := json.Marshal(hcsshim.VsidPolicy{
Type: "VSID",
VSID: uint(s.vni),
})
if err != nil {
return err
}
subnet.Policies = append(subnet.Policies, vsidPolicy)
subnets = append(subnets, subnet)
}
network := &hcsshim.HNSNetwork{
Name: n.name,
Type: d.Type(),
Subnets: subnets,
NetworkAdapterName: n.interfaceName,
}
configurationb, err := json.Marshal(network)
if err != nil {
return err
}
configuration := string(configurationb)
logrus.Infof("HNSNetwork Request =%v", configuration)
hnsresponse, err := hcsshim.HNSNetworkRequest("POST", "", configuration)
if err != nil {
return err
}
n.hnsId = hnsresponse.Id
n.providerAddress = hnsresponse.ManagementIP
// Save local host specific info
if err := d.writeLocalNetworkToStore(n); err != nil {
return fmt.Errorf("failed to update data store for network %v: %v", n.id, err)
}
} else {
n.hnsId = ln.hnsID
n.providerAddress = ln.providerAddress
}
return nil
}