From d196ac347e5b3ef45086a42f96e3ed0f55d3ec51 Mon Sep 17 00:00:00 2001
From: CrazyMax <crazy-max@users.noreply.github.com>
Date: Fri, 26 May 2023 10:30:49 +0200
Subject: [PATCH] driver: cache features

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
---
 driver/manager.go | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/driver/manager.go b/driver/manager.go
index 37436a22..13826cc8 100644
--- a/driver/manager.go
+++ b/driver/manager.go
@@ -147,9 +147,11 @@ func GetFactories(instanceRequired bool) []Factory {
 
 type cachedDriver struct {
 	Driver
-	client *client.Client
-	err    error
-	once   sync.Once
+	client       *client.Client
+	err          error
+	once         sync.Once
+	featuresOnce sync.Once
+	features     map[Feature]bool
 }
 
 func (d *cachedDriver) Client(ctx context.Context) (*client.Client, error) {
@@ -158,3 +160,10 @@ func (d *cachedDriver) Client(ctx context.Context) (*client.Client, error) {
 	})
 	return d.client, d.err
 }
+
+func (d *cachedDriver) Features() map[Feature]bool {
+	d.featuresOnce.Do(func() {
+		d.features = d.Driver.Features()
+	})
+	return d.features
+}