k3s/vendor/github.com/Microsoft/hcsshim/hcn/hcnsupport.go
2019-07-09 17:29:38 -07:00

72 lines
2.1 KiB
Go

package hcn
import (
"github.com/sirupsen/logrus"
)
// SupportedFeatures are the features provided by the Service.
type SupportedFeatures struct {
Acl AclFeatures `json:"ACL"`
Api ApiSupport `json:"API"`
RemoteSubnet bool `json:"RemoteSubnet"`
HostRoute bool `json:"HostRoute"`
DSR bool `json:"DSR"`
}
// AclFeatures are the supported ACL possibilities.
type AclFeatures struct {
AclAddressLists bool `json:"AclAddressLists"`
AclNoHostRulePriority bool `json:"AclHostRulePriority"`
AclPortRanges bool `json:"AclPortRanges"`
AclRuleId bool `json:"AclRuleId"`
}
// ApiSupport lists the supported API versions.
type ApiSupport struct {
V1 bool `json:"V1"`
V2 bool `json:"V2"`
}
// GetSupportedFeatures returns the features supported by the Service.
func GetSupportedFeatures() SupportedFeatures {
var features SupportedFeatures
globals, err := GetGlobals()
if err != nil {
// Expected on pre-1803 builds, all features will be false/unsupported
logrus.Debugf("Unable to obtain globals: %s", err)
return features
}
features.Acl = AclFeatures{
AclAddressLists: isFeatureSupported(globals.Version, HNSVersion1803),
AclNoHostRulePriority: isFeatureSupported(globals.Version, HNSVersion1803),
AclPortRanges: isFeatureSupported(globals.Version, HNSVersion1803),
AclRuleId: isFeatureSupported(globals.Version, HNSVersion1803),
}
features.Api = ApiSupport{
V2: isFeatureSupported(globals.Version, V2ApiSupport),
V1: true, // HNSCall is still available.
}
features.RemoteSubnet = isFeatureSupported(globals.Version, RemoteSubnetVersion)
features.HostRoute = isFeatureSupported(globals.Version, HostRouteVersion)
features.DSR = isFeatureSupported(globals.Version, DSRVersion)
return features
}
func isFeatureSupported(currentVersion Version, minVersionSupported Version) bool {
if currentVersion.Major < minVersionSupported.Major {
return false
}
if currentVersion.Major > minVersionSupported.Major {
return true
}
if currentVersion.Minor < minVersionSupported.Minor {
return false
}
return true
}