Rendering: Add configuration options for renderKey lifetime (#57339)

* Add configuration options for `renderKey` lifetime

* Rename config key to `render_key_lifetime`

* Update conf/defaults.ini

Co-authored-by: Joan López de la Franca Beltran <5459617+joanlopez@users.noreply.github.com>

* Add `render_key_lifetime` to sample.ini

Co-authored-by: Joan López de la Franca Beltran <5459617+joanlopez@users.noreply.github.com>

pkg/services/rendering/rendering.go

@@ -91,7 +91,7 @@ func ProvideService(cfg *setting.Cfg, remoteCache *remotecache.RemoteCache, rm p
 		perRequestRenderKeyProvider: &perRequestRenderKeyProvider{
 			cache:     remoteCache,
 			log:       logger,
-			keyExpiry: 5 * time.Minute,
+			keyExpiry: cfg.RendererRenderKeyLifeTime,
 		},
 		capabilities: []Capability{
 			{

pkg/setting/setting.go

@@ -247,6 +247,7 @@ type Cfg struct {
 	RendererCallbackUrl            string
 	RendererAuthToken              string
 	RendererConcurrentRequestLimit int
+	RendererRenderKeyLifeTime      time.Duration
 
 	// Security
 	DisableInitAdminCreation          bool
@@ -1486,6 +1487,7 @@ func (cfg *Cfg) readRenderingSettings(iniFile *ini.File) error {
 	}
 
 	cfg.RendererConcurrentRequestLimit = renderSec.Key("concurrent_render_request_limit").MustInt(30)
+	cfg.RendererRenderKeyLifeTime = renderSec.Key("render_key_lifetime").MustDuration(5 * time.Minute)
 	cfg.ImagesDir = filepath.Join(cfg.DataPath, "png")
 	cfg.CSVsDir = filepath.Join(cfg.DataPath, "csv")