fix: recover transient stock history failures within bounded deadlines

internal/handler/router.go

@@ -19,7 +19,7 @@ func NewRouter(health *service.HealthService, logger *zap.Logger, identity Ident
 	gin.SetMode(gin.ReleaseMode)
 	r := gin.New()
 	r.Use(func(c *gin.Context) {
-		ctx, cancel := context.WithTimeout(c.Request.Context(), 5*time.Second)
+		ctx, cancel := context.WithTimeout(c.Request.Context(), requestTimeout(c.Request))
 		defer cancel()
 		if identity.PublicOrigin != "" {
 			ctx = context.WithValue(ctx, publicOriginContextKey{}, identity.PublicOrigin)
@@ -87,3 +87,10 @@ func NewRouter(health *service.HealthService, logger *zap.Logger, identity Ident
 	})
 	return r
 }
+
+func requestTimeout(r *http.Request) time.Duration {
+	if r.Method == http.MethodGet && (r.URL.Path == "/api/admin/v1/market/history" || r.URL.Path == "/api/v1/market/history") || r.Method == http.MethodPost && r.URL.Path == "/api/admin/v1/backtests/from-market" {
+		return 35 * time.Second
+	}
+	return 5 * time.Second
+}