Rename. Add conga line launch file.

launch/conga_line.launch.py

@@ -0,0 +1,26 @@
+import launch
+import launch_ros.actions
+
+def generate_launch_description():
+    parrots = []
+    for i in range(1, 10):
+        parrots.append(make_parrot(i))
+
+    return launch.LaunchDescription(parrots)
+
+
+def make_parrot(index):
+    index_before = index - 1
+    parrot = launch_ros.actions.Node(
+            package='j7s_simple',
+            executable='j7s_parrot',
+            name='j7s_parrot_{}'.format(index),
+            parameters=[{
+                "name":"{}".format(index)
+            }],
+            remappings=[
+                ("~/parrot_in", "parrot_{}".format(index_before)),
+                ("~/parrot_out", "parrot_{}".format(index))
+            ]
+        )
+    return parrot

launch/j7s_publisher_launch.py

@@ -3,16 +3,16 @@ import launch_ros.actions
 
 def generate_launch_description():
     publisher_node = launch_ros.actions.Node(
-            package='j7s-simple',
-            executable='j7s-publisher',
+            package='j7s_simple',
+            executable='j7s_publisher',
             name='j7s_publisher',
             parameters=[{
                 "message":"Hello"
             }]
         )
     parrot_node = launch_ros.actions.Node(
-            package='j7s-simple',
-            executable='j7s-parrot',
+            package='j7s_simple',
+            executable='j7s_parrot',
             name='j7s_parrot_1',
             parameters=[{
                 "name":"Polly"