[management] enrich context in permissions manager (#6286)

management/server/context/keys.go

@@ -1,10 +1,27 @@
 package context
 
-import "github.com/netbirdio/netbird/shared/context"
+import (
+	"context"
+
+	nbcontext "github.com/netbirdio/netbird/shared/context"
+)
 
 const (
-	RequestIDKey = context.RequestIDKey
-	AccountIDKey = context.AccountIDKey
-	UserIDKey    = context.UserIDKey
-	PeerIDKey    = context.PeerIDKey
+	RequestIDKey = nbcontext.RequestIDKey
+	AccountIDKey = nbcontext.AccountIDKey
+	RoleKey      = nbcontext.RoleKey
+	UserIDKey    = nbcontext.UserIDKey
+	PeerIDKey    = nbcontext.PeerIDKey
 )
+
+// RoleFromContext returns the role stored in ctx, or empty string and false if absent.
+func RoleFromContext(ctx context.Context) (string, bool) {
+	role, ok := ctx.Value(RoleKey).(string)
+	return role, ok
+}
+
+// WithRole returns a new context carrying the given role.
+func WithRole(ctx context.Context, role string) context.Context {
+	//nolint
+	return context.WithValue(ctx, RoleKey, role)
+}