Handle bad or missing package on ros2 interface show. (#366)

Signed-off-by: Michel Hidalgo <[email protected]>
ros2 · Oct 18, 2019 · 8ece0f1 · 8ece0f1
1 parent 4cfb8b9
commit 8ece0f1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/ros2interface/ros2interface/api/__init__.py b/ros2interface/ros2interface/api/__init__.py
@@ -41,6 +41,8 @@ def get_interfaces(package_name):
 
 def get_interface_path(parts):
     prefix_path = has_resource('packages', parts[0])
+    if not prefix_path:
+        raise LookupError('Unknown package {}'.format(parts[0]))
     joined = '/'.join(parts)
     if len(parts[-1].rsplit('.', 1)) == 1:
         joined += '.idl'