From 8d5839724b4ad2ad32cd7dfda4952dc105937d42 Mon Sep 17 00:00:00 2001
From: Luka Vandervelden <lukc@upyum.com>
Date: Sat, 16 Nov 2019 16:08:52 +0100
Subject: [PATCH] templates can now `raise` exceptions.

---
 src/gen-config.cr | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/gen-config.cr b/src/gen-config.cr
index 4185b7f..6ba2adf 100644
--- a/src/gen-config.cr
+++ b/src/gen-config.cr
@@ -116,10 +116,11 @@ class GenConfig::Context
 			end
 		end
 
-		#options["port"] = Crinja.function do
-		#	service = (arguments.varargs[0]? || "").to_s.gsub /\//, ':'
-		#	`get-port #{service}`.chomp
-		#end
+		options["raise"] = Crinja.function do
+			message = arguments.varargs.join "\n"
+
+			raise Service::Exception.new "template error: #{message}"
+		end
 
 		# FIXME: Move this to a separate binary?
 		options["random_password"] = Crinja.function do