From 64c0f86f14dfe2337816079c4d5991268aeb0635 Mon Sep 17 00:00:00 2001
From: ivanpauno <ivanpauno@ekumenlabs.com>
Date: Tue, 10 Sep 2019 10:21:25 -0700
Subject: [PATCH] Add throwing parameter name if parameter is not set (#833)

* added throwing parameter name if parameter is not set

Signed-off-by: Alex <cvbn127@gmail.com>
Signed-off-by: ivanpauno <ivanpauno@ekumenlabs.com>
---
 rclcpp/include/rclcpp/parameter_client.hpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/rclcpp/include/rclcpp/parameter_client.hpp b/rclcpp/include/rclcpp/parameter_client.hpp
index 77ae4d2..2cf09d8 100644
--- a/rclcpp/include/rclcpp/parameter_client.hpp
+++ b/rclcpp/include/rclcpp/parameter_client.hpp
@@ -271,7 +271,11 @@ public:
   {
     return get_parameter_impl(
       parameter_name,
-      std::function<T()>([]() -> T {throw std::runtime_error("Parameter not set");}));
+      std::function<T()>([&parameter_name]() -> T
+      {
+        throw std::runtime_error("Parameter '" + parameter_name + "' is not set");
+      })
+    );
   }
 
   RCLCPP_PUBLIC