Make node name unique with random suffix

Signed-off-by: Dereck Wonnacott <[email protected]>

Author: dawonn-haval

Diff for: rosbag2_transport/src/rosbag2_transport/rosbag2_transport.cpp

@@ -88,7 +88,8 @@ std::shared_ptr<Rosbag2Node> Rosbag2Transport::setup_node(
 {
   if (!transport_node_) {
     auto node_options = rclcpp::NodeOptions().arguments(topic_remapping_options);
-    transport_node_ = std::make_shared<Rosbag2Node>(node_prefix + "_rosbag2", node_options);
+    std::string random_suffix = std::to_string(rand_r() % 1000000);
+    transport_node_ = std::make_shared<Rosbag2Node>(node_prefix + "_rosbag2_" + random_suffix, node_options);
   }
   return transport_node_;
 }