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https://github.com/k3s-io/k3s.git
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107 lines
4.6 KiB
Go
107 lines
4.6 KiB
Go
package hcn
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import (
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"github.com/sirupsen/logrus"
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)
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// SupportedFeatures are the features provided by the Service.
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type SupportedFeatures struct {
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Acl AclFeatures `json:"ACL"`
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Api ApiSupport `json:"API"`
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RemoteSubnet bool `json:"RemoteSubnet"`
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HostRoute bool `json:"HostRoute"`
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DSR bool `json:"DSR"`
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Slash32EndpointPrefixes bool `json:"Slash32EndpointPrefixes"`
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AclSupportForProtocol252 bool `json:"AclSupportForProtocol252"`
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SessionAffinity bool `json:"SessionAffinity"`
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IPv6DualStack bool `json:"IPv6DualStack"`
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SetPolicy bool `json:"SetPolicy"`
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VxlanPort bool `json:"VxlanPort"`
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L4Proxy bool `json:"L4Proxy"` // network policy that applies VFP rules to all endpoints on the network to redirect traffic
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L4WfpProxy bool `json:"L4WfpProxy"` // endpoint policy that applies WFP filters to redirect traffic to/from that endpoint
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TierAcl bool `json:"TierAcl"`
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}
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// AclFeatures are the supported ACL possibilities.
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type AclFeatures struct {
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AclAddressLists bool `json:"AclAddressLists"`
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AclNoHostRulePriority bool `json:"AclHostRulePriority"`
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AclPortRanges bool `json:"AclPortRanges"`
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AclRuleId bool `json:"AclRuleId"`
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}
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// ApiSupport lists the supported API versions.
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type ApiSupport struct {
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V1 bool `json:"V1"`
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V2 bool `json:"V2"`
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}
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// GetSupportedFeatures returns the features supported by the Service.
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func GetSupportedFeatures() SupportedFeatures {
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var features SupportedFeatures
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globals, err := GetGlobals()
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if err != nil {
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// Expected on pre-1803 builds, all features will be false/unsupported
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logrus.Debugf("Unable to obtain globals: %s", err)
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return features
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}
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features.Acl = AclFeatures{
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AclAddressLists: isFeatureSupported(globals.Version, HNSVersion1803),
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AclNoHostRulePriority: isFeatureSupported(globals.Version, HNSVersion1803),
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AclPortRanges: isFeatureSupported(globals.Version, HNSVersion1803),
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AclRuleId: isFeatureSupported(globals.Version, HNSVersion1803),
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}
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features.Api = ApiSupport{
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V2: isFeatureSupported(globals.Version, V2ApiSupport),
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V1: true, // HNSCall is still available.
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}
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features.RemoteSubnet = isFeatureSupported(globals.Version, RemoteSubnetVersion)
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features.HostRoute = isFeatureSupported(globals.Version, HostRouteVersion)
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features.DSR = isFeatureSupported(globals.Version, DSRVersion)
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features.Slash32EndpointPrefixes = isFeatureSupported(globals.Version, Slash32EndpointPrefixesVersion)
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features.AclSupportForProtocol252 = isFeatureSupported(globals.Version, AclSupportForProtocol252Version)
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features.SessionAffinity = isFeatureSupported(globals.Version, SessionAffinityVersion)
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features.IPv6DualStack = isFeatureSupported(globals.Version, IPv6DualStackVersion)
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features.SetPolicy = isFeatureSupported(globals.Version, SetPolicyVersion)
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features.VxlanPort = isFeatureSupported(globals.Version, VxlanPortVersion)
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features.L4Proxy = isFeatureSupported(globals.Version, L4ProxyPolicyVersion)
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features.L4WfpProxy = isFeatureSupported(globals.Version, L4WfpProxyPolicyVersion)
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features.TierAcl = isFeatureSupported(globals.Version, TierAclPolicyVersion)
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return features
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}
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func isFeatureSupported(currentVersion Version, versionsSupported VersionRanges) bool {
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isFeatureSupported := false
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for _, versionRange := range versionsSupported {
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isFeatureSupported = isFeatureSupported || isFeatureInRange(currentVersion, versionRange)
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}
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return isFeatureSupported
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}
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func isFeatureInRange(currentVersion Version, versionRange VersionRange) bool {
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if currentVersion.Major < versionRange.MinVersion.Major {
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logrus.Infof("currentVersion.Major < versionRange.MinVersion.Major: %v, %v", currentVersion.Major, versionRange.MinVersion.Major)
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return false
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}
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if currentVersion.Major > versionRange.MaxVersion.Major {
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logrus.Infof("currentVersion.Major > versionRange.MaxVersion.Major: %v, %v", currentVersion.Major, versionRange.MaxVersion.Major)
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return false
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}
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if currentVersion.Major == versionRange.MinVersion.Major && currentVersion.Minor < versionRange.MinVersion.Minor {
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logrus.Infof("currentVersion.Minor < versionRange.MinVersion.Major: %v, %v", currentVersion.Minor, versionRange.MinVersion.Minor)
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return false
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}
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if currentVersion.Major == versionRange.MaxVersion.Major && currentVersion.Minor > versionRange.MaxVersion.Minor {
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logrus.Infof("currentVersion.Minor > versionRange.MaxVersion.Major: %v, %v", currentVersion.Minor, versionRange.MaxVersion.Minor)
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return false
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}
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return true
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}
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