NET-2077: Add support for Feature Flags. (#3528)

* feat(go): add support for feature flags;

* feat(go): store feature flags in code;

* feat(go): report base domain on license validation;

* feat(go): remove nm base domain required binding;

* feat(go): add a flag for oauth support;

controllers/server.go

@@ -56,6 +56,7 @@ func serverHandlers(r *mux.Router) {
 		Methods(http.MethodPost)
 	r.HandleFunc("/api/server/mem_profile", logic.SecurityCheck(false, http.HandlerFunc(memProfile))).
 		Methods(http.MethodPost)
+	r.HandleFunc("/api/server/feature_flags", getFeatureFlags).Methods(http.MethodGet)
 }
 
 func cpuProfile(w http.ResponseWriter, r *http.Request) {
@@ -325,3 +326,12 @@ func reInit(curr, new models.ServerSettings, force bool) {
 	go mq.PublishPeerUpdate(false)
 
 }
+
+// @Summary     Get feature flags for this server.
+// @Router      /api/server/feature_flags [get]
+// @Tags        Server
+// @Security    oauth2
+// @Success     200 {object} config.ServerSettings
+func getFeatureFlags(w http.ResponseWriter, r *http.Request) {
+	logic.ReturnSuccessResponseWithJson(w, r, logic.GetFeatureFlags(), "")
+}

logic/server.go

@@ -1,7 +1,12 @@
 package logic
 
+import "github.com/gravitl/netmaker/models"
+
 // EnterpriseCheckFuncs - can be set to run functions for EE
 var EnterpriseCheckFuncs []func()
+var GetFeatureFlags = func() models.FeatureFlags {
+	return models.FeatureFlags{}
+}
 
 // == Join, Checkin, and Leave for Server ==
 

models/structs.go

@@ -16,6 +16,13 @@ const (
 	PLACEHOLDER_TOKEN_TEXT = "ACCESS_TOKEN"
 )
 
+type FeatureFlags struct {
+	EnableNetworkActivity   bool `json:"enable_network_activity"`
+	EnableOAuth             bool `json:"enable_oauth"`
+	EnableIDPIntegration    bool `json:"enable_idp_integration"`
+	AllowMultiServerLicense bool `json:"allow_multi_server_license"`
+}
+
 // AuthParams - struct for auth params
 type AuthParams struct {
 	MacAddress string `json:"macaddress"`

pro/initialize.go

@@ -155,7 +155,7 @@ func InitPro() {
 	logic.GetFwRulesForNodeAndPeerOnGw = proLogic.GetFwRulesForNodeAndPeerOnGw
 	logic.GetFwRulesForUserNodesOnGw = proLogic.GetFwRulesForUserNodesOnGw
 	logic.GetHostLocInfo = proLogic.GetHostLocInfo
-
+	logic.GetFeatureFlags = proLogic.GetFeatureFlags
 }
 
 func retrieveProLogo() string {

pro/license.go

@@ -135,6 +135,8 @@ func ValidateLicense() (err error) {
 		return err
 	}
 
+	proLogic.SetFeatureFlags(licenseResponse.FeatureFlags)
+
 	slog.Info("License validation succeeded!")
 	return nil
 }
@@ -200,6 +202,7 @@ func validateLicenseKey(encryptedData []byte, publicKey *[32]byte) ([]byte, bool
 		LicenseKey:     servercfg.GetLicenseKey(),
 		NmServerPubKey: base64encode(publicKeyBytes),
 		EncryptedPart:  base64encode(encryptedData),
+		NmBaseDomain:   servercfg.GetNmBaseDomain(),
 	}
 
 	requestBody, err := json.Marshal(msg)

pro/logic/server.go

@@ -0,0 +1,13 @@
+package logic
+
+import "github.com/gravitl/netmaker/models"
+
+var featureFlagsCache models.FeatureFlags
+
+func SetFeatureFlags(featureFlags models.FeatureFlags) {
+	featureFlagsCache = featureFlags
+}
+
+func GetFeatureFlags() models.FeatureFlags {
+	return featureFlagsCache
+}

pro/types.go

@@ -5,6 +5,7 @@ package pro
 
 import (
 	"errors"
+	"github.com/gravitl/netmaker/models"
 )
 
 const (
@@ -32,8 +33,9 @@ type LicenseKey struct {
 
 // ValidatedLicense - the validated license struct
 type ValidatedLicense struct {
-	LicenseValue     string `json:"license_value"     binding:"required"` // license that validation is being requested for
-	EncryptedLicense string `json:"encrypted_license" binding:"required"` // to be decrypted by Netmaker using Netmaker server's private key
+	LicenseValue     string              `json:"license_value"     binding:"required"` // license that validation is being requested for
+	EncryptedLicense string              `json:"encrypted_license" binding:"required"` // to be decrypted by Netmaker using Netmaker server's private key
+	FeatureFlags     models.FeatureFlags `json:"feature_flags" binding:"required"`
 }
 
 // LicenseSecret - the encrypted struct for sending user-id
@@ -74,6 +76,7 @@ type ValidateLicenseRequest struct {
 	LicenseKey     string `json:"license_key"       binding:"required"`
 	NmServerPubKey string `json:"nm_server_pub_key" binding:"required"` // Netmaker server public key used to send data back to Netmaker for the Netmaker server to decrypt (eg output from validating license)
 	EncryptedPart  string `json:"secret"            binding:"required"`
+	NmBaseDomain   string `json:"nm_base_domain"`
 }
 
 type licenseResponseCache struct {