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- package hcn
- import (
- "encoding/json"
- "fmt"
- "github.com/Microsoft/hcsshim/internal/hcserror"
- "github.com/Microsoft/hcsshim/internal/interop"
- "github.com/sirupsen/logrus"
- )
- // Globals are all global properties of the HCN Service.
- type Globals struct {
- Version Version `json:"Version"`
- }
- // Version is the HCN Service version.
- type Version struct {
- Major int `json:"Major"`
- Minor int `json:"Minor"`
- }
- var (
- // HNSVersion1803 added ACL functionality.
- HNSVersion1803 = Version{Major: 7, Minor: 2}
- // V2ApiSupport allows the use of V2 Api calls and V2 Schema.
- V2ApiSupport = Version{Major: 9, Minor: 2}
- // Remote Subnet allows for Remote Subnet policies on Overlay networks
- RemoteSubnetVersion = Version{Major: 9, Minor: 2}
- // A Host Route policy allows for local container to local host communication Overlay networks
- HostRouteVersion = Version{Major: 9, Minor: 2}
- // HNS 10.2 allows for Direct Server Return for loadbalancing
- DSRVersion = Version{Major: 10, Minor: 2}
- )
- // GetGlobals returns the global properties of the HCN Service.
- func GetGlobals() (*Globals, error) {
- var version Version
- err := hnsCall("GET", "/globals/version", "", &version)
- if err != nil {
- return nil, err
- }
- globals := &Globals{
- Version: version,
- }
- return globals, nil
- }
- 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 hcserror.New(err, "hnsCall ", "")
- }
- response := interop.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
- }
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