210 lines
4.2 KiB
Go
210 lines
4.2 KiB
Go
package overlay
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import (
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"encoding/json"
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"fmt"
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"sync"
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"github.com/Microsoft/hcsshim"
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"github.com/Sirupsen/logrus"
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"github.com/docker/libnetwork/datastore"
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)
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const overlayNetworkPrefix = "overlay/network"
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type localNetwork struct {
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id string
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hnsID string
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providerAddress string
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dbIndex uint64
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dbExists bool
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sync.Mutex
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}
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func (d *driver) findHnsNetwork(n *network) error {
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ln, err := d.getLocalNetworkFromStore(n.id)
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if err != nil {
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return err
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}
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if ln == nil {
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subnets := []hcsshim.Subnet{}
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for _, s := range n.subnets {
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subnet := hcsshim.Subnet{
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AddressPrefix: s.subnetIP.String(),
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}
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if s.gwIP != nil {
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subnet.GatewayAddress = s.gwIP.IP.String()
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}
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vsidPolicy, err := json.Marshal(hcsshim.VsidPolicy{
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Type: "VSID",
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VSID: uint(s.vni),
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})
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if err != nil {
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return err
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}
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subnet.Policies = append(subnet.Policies, vsidPolicy)
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subnets = append(subnets, subnet)
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}
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network := &hcsshim.HNSNetwork{
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Name: n.name,
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Type: d.Type(),
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Subnets: subnets,
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NetworkAdapterName: n.interfaceName,
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}
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configurationb, err := json.Marshal(network)
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if err != nil {
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return err
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}
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configuration := string(configurationb)
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logrus.Infof("HNSNetwork Request =%v", configuration)
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hnsresponse, err := hcsshim.HNSNetworkRequest("POST", "", configuration)
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if err != nil {
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return err
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}
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n.hnsId = hnsresponse.Id
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n.providerAddress = hnsresponse.ManagementIP
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// Save local host specific info
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if err := d.writeLocalNetworkToStore(n); err != nil {
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return fmt.Errorf("failed to update data store for network %v: %v", n.id, err)
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}
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} else {
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n.hnsId = ln.hnsID
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n.providerAddress = ln.providerAddress
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}
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return nil
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}
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func (d *driver) getLocalNetworkFromStore(nid string) (*localNetwork, error) {
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if d.localStore == nil {
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return nil, fmt.Errorf("overlay local store not initialized, network not found")
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}
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n := &localNetwork{id: nid}
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if err := d.localStore.GetObject(datastore.Key(n.Key()...), n); err != nil {
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return nil, nil
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}
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return n, nil
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}
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func (d *driver) deleteLocalNetworkFromStore(n *network) error {
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if d.localStore == nil {
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return fmt.Errorf("overlay local store not initialized, network not deleted")
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}
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ln, err := d.getLocalNetworkFromStore(n.id)
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if err != nil {
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return err
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}
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if err = d.localStore.DeleteObjectAtomic(ln); err != nil {
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return err
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}
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return nil
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}
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func (d *driver) writeLocalNetworkToStore(n *network) error {
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if d.localStore == nil {
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return fmt.Errorf("overlay local store not initialized, network not added")
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}
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ln := &localNetwork{
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id: n.id,
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hnsID: n.hnsId,
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providerAddress: n.providerAddress,
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}
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if err := d.localStore.PutObjectAtomic(ln); err != nil {
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return err
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}
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return nil
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}
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func (n *localNetwork) DataScope() string {
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return datastore.LocalScope
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}
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func (n *localNetwork) New() datastore.KVObject {
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return &localNetwork{}
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}
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func (n *localNetwork) CopyTo(o datastore.KVObject) error {
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dstep := o.(*localNetwork)
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*dstep = *n
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return nil
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}
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func (n *localNetwork) Key() []string {
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return []string{overlayNetworkPrefix, n.id}
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}
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func (n *localNetwork) KeyPrefix() []string {
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return []string{overlayNetworkPrefix}
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}
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func (n *localNetwork) Index() uint64 {
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return n.dbIndex
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}
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func (n *localNetwork) SetIndex(index uint64) {
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n.dbIndex = index
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n.dbExists = true
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}
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func (n *localNetwork) Exists() bool {
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return n.dbExists
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}
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func (n *localNetwork) Skip() bool {
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return false
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}
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func (n *localNetwork) Value() []byte {
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b, err := json.Marshal(n)
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if err != nil {
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return nil
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}
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return b
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}
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func (n *localNetwork) SetValue(value []byte) error {
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return json.Unmarshal(value, n)
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}
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func (n *localNetwork) MarshalJSON() ([]byte, error) {
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networkMap := make(map[string]interface{})
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networkMap["id"] = n.id
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networkMap["hnsID"] = n.hnsID
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networkMap["providerAddress"] = n.providerAddress
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return json.Marshal(networkMap)
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}
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func (n *localNetwork) UnmarshalJSON(value []byte) error {
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var networkMap map[string]interface{}
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json.Unmarshal(value, &networkMap)
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n.id = networkMap["id"].(string)
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n.hnsID = networkMap["hnsID"].(string)
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n.providerAddress = networkMap["providerAddress"].(string)
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return nil
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}
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