/
hnsfuncs.go
271 lines (230 loc) · 7.42 KB
/
hnsfuncs.go
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package hcsshim
import (
"encoding/json"
"fmt"
"net"
"github.com/Sirupsen/logrus"
)
type NatPolicy struct {
Type string
Protocol string
InternalPort uint16
ExternalPort uint16
}
type QosPolicy struct {
Type string
MaximumOutgoingBandwidthInBytes uint64
}
type VlanPolicy struct {
Type string
VLAN uint
}
type VsidPolicy struct {
Type string
VSID uint
}
type PaPolicy struct {
Type string
PA string
}
// Subnet is assoicated with a network and represents a list
// of subnets available to the network
type Subnet struct {
AddressPrefix string `json:",omitempty"`
GatewayAddress string `json:",omitempty"`
Policies []json.RawMessage `json:",omitempty"`
}
// MacPool is assoicated with a network and represents a list
// of macaddresses available to the network
type MacPool struct {
StartMacAddress string `json:",omitempty"`
EndMacAddress string `json:",omitempty"`
}
// HNSNetwork represents a network in HNS
type HNSNetwork struct {
Id string `json:"ID,omitempty"`
Name string `json:",omitempty"`
Type string `json:",omitempty"`
NetworkAdapterName string `json:",omitempty"`
SourceMac string `json:",omitempty"`
Policies []json.RawMessage `json:",omitempty"`
MacPools []MacPool `json:",omitempty"`
Subnets []Subnet `json:",omitempty"`
DNSSuffix string `json:",omitempty"`
DNSServerList string `json:",omitempty"`
DNSServerCompartment uint32 `json:",omitempty"`
ManagementIP string `json:",omitempty"`
}
// HNSEndpoint represents a network endpoint in HNS
type HNSEndpoint struct {
Id string `json:"ID,omitempty"`
Name string `json:",omitempty"`
VirtualNetwork string `json:",omitempty"`
VirtualNetworkName string `json:",omitempty"`
Policies []json.RawMessage `json:",omitempty"`
MacAddress string `json:",omitempty"`
IPAddress net.IP `json:",omitempty"`
DNSSuffix string `json:",omitempty"`
DNSServerList string `json:",omitempty"`
GatewayAddress string `json:",omitempty"`
EnableInternalDNS bool `json:",omitempty"`
DisableICC bool `json:",omitempty"`
PrefixLength uint8 `json:",omitempty"`
IsRemoteEndpoint bool `json:",omitempty"`
}
type hnsNetworkResponse struct {
Success bool
Error string
Output HNSNetwork
}
type hnsResponse struct {
Success bool
Error string
Output json.RawMessage
}
func hnsCall(method, path, request string, returnResponse interface{}) error {
var responseBuffer *uint16
logrus.Debugf("[%s]=>[%s] Request : %s", method, path, request)
err := _hnsCall(method, path, request, &responseBuffer)
if err != nil {
return makeError(err, "hnsCall ", "")
}
response := convertAndFreeCoTaskMemString(responseBuffer)
hnsresponse := &hnsResponse{}
if err = json.Unmarshal([]byte(response), &hnsresponse); err != nil {
return err
}
if !hnsresponse.Success {
return fmt.Errorf("HNS failed with error : %s", hnsresponse.Error)
}
if len(hnsresponse.Output) == 0 {
return nil
}
logrus.Debugf("Network Response : %s", hnsresponse.Output)
err = json.Unmarshal(hnsresponse.Output, returnResponse)
if err != nil {
return err
}
return nil
}
// HNSNetworkRequest makes a call into HNS to update/query a single network
func HNSNetworkRequest(method, path, request string) (*HNSNetwork, error) {
var network HNSNetwork
err := hnsCall(method, "/networks/"+path, request, &network)
if err != nil {
return nil, err
}
return &network, nil
}
// HNSListNetworkRequest makes a HNS call to query the list of available networks
func HNSListNetworkRequest(method, path, request string) ([]HNSNetwork, error) {
var network []HNSNetwork
err := hnsCall(method, "/networks/"+path, request, &network)
if err != nil {
return nil, err
}
return network, nil
}
// HNSEndpointRequest makes a HNS call to modify/query a network endpoint
func HNSEndpointRequest(method, path, request string) (*HNSEndpoint, error) {
endpoint := &HNSEndpoint{}
err := hnsCall(method, "/endpoints/"+path, request, &endpoint)
if err != nil {
return nil, err
}
return endpoint, nil
}
// HNSListEndpointRequest makes a HNS call to query the list of available endpoints
func HNSListEndpointRequest() ([]HNSEndpoint, error) {
var endpoint []HNSEndpoint
err := hnsCall("GET", "/endpoints/", "", &endpoint)
if err != nil {
return nil, err
}
return endpoint, nil
}
// HotAttachEndpoint makes a HCS Call to attach the endpoint to the container
func HotAttachEndpoint(containerID string, endpointID string) error {
return modifyNetworkEndpoint(containerID, endpointID, Add)
}
// HotDetachEndpoint makes a HCS Call to detach the endpoint from the container
func HotDetachEndpoint(containerID string, endpointID string) error {
return modifyNetworkEndpoint(containerID, endpointID, Remove)
}
// ModifyContainer corresponding to the container id, by sending a request
func modifyContainer(id string, request *ResourceModificationRequestResponse) error {
container, err := OpenContainer(id)
if err != nil {
if IsNotExist(err) {
return ErrComputeSystemDoesNotExist
}
return getInnerError(err)
}
defer container.Close()
err = container.Modify(request)
if err != nil {
if IsNotSupported(err) {
return ErrPlatformNotSupported
}
return getInnerError(err)
}
return nil
}
func modifyNetworkEndpoint(containerID string, endpointID string, request RequestType) error {
requestMessage := &ResourceModificationRequestResponse{
Resource: Network,
Request: request,
Data: endpointID,
}
err := modifyContainer(containerID, requestMessage)
if err != nil {
return err
}
return nil
}
// GetHNSNetworkByID
func GetHNSNetworkByID(networkID string) (*HNSNetwork, error) {
return HNSNetworkRequest("GET", networkID, "")
}
// GetHNSNetworkName filtered by Name
func GetHNSNetworkByName(networkName string) (*HNSNetwork, error) {
hsnnetworks, err := HNSListNetworkRequest("GET", "", "")
if err != nil {
return nil, err
}
for _, hnsnetwork := range hsnnetworks {
if hnsnetwork.Name == networkName {
return &hnsnetwork, nil
}
}
return nil, fmt.Errorf("Network %v not found", networkName)
}
// Create Endpoint by sending EndpointRequest to HNS. TODO: Create a separate HNS interface to place all these methods
func (endpoint *HNSEndpoint) Create() (*HNSEndpoint, error) {
jsonString, err := json.Marshal(endpoint)
if err != nil {
return nil, err
}
return HNSEndpointRequest("POST", "", string(jsonString))
}
// Create Endpoint by sending EndpointRequest to HNS
func (endpoint *HNSEndpoint) Delete() (*HNSEndpoint, error) {
return HNSEndpointRequest("DELETE", endpoint.Id, "")
}
// GetHNSEndpointByID
func GetHNSEndpointByID(endpointID string) (*HNSEndpoint, error) {
return HNSEndpointRequest("GET", endpointID, "")
}
// GetHNSNetworkName filtered by Name
func GetHNSEndpointByName(endpointName string) (*HNSEndpoint, error) {
hnsResponse, err := HNSListEndpointRequest()
if err != nil {
return nil, err
}
for _, hnsEndpoint := range hnsResponse {
if hnsEndpoint.Name == endpointName {
return &hnsEndpoint, nil
}
}
return nil, fmt.Errorf("Endpoint %v not found", endpointName)
}