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Make BT nodes have configurable wait times.
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Previous solution provided hardcoded 1s value.
Right now the value can be configured for BT
Action, Cancel and Service nodes.

[ros-navigation#3920]

Signed-off-by: Adam Galecki <[email protected]>
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embeddedadam committed Nov 14, 2023
1 parent 8fde00d commit 2812ce2
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Showing 10 changed files with 25 additions and 12 deletions.
Original file line number Diff line number Diff line change
Expand Up @@ -61,8 +61,8 @@ class BtActionNode : public BT::ActionNodeBase
server_timeout_ =
config().blackboard->template get<std::chrono::milliseconds>("server_timeout");
getInput<std::chrono::milliseconds>("server_timeout", server_timeout_);
bt_wait_for_service_time_ =
config().blackboard->template get<std::chrono::milliseconds>("bt_wait_for_service_time");
bt_wait_for_service_timeout_ =
config().blackboard->template get<std::chrono::milliseconds>("bt_wait_for_service_timeout_");

// Initialize the input and output messages
goal_ = typename ActionT::Goal();
Expand Down Expand Up @@ -95,7 +95,7 @@ class BtActionNode : public BT::ActionNodeBase

// Make sure the server is actually there before continuing
RCLCPP_DEBUG(node_->get_logger(), "Waiting for \"%s\" action server", action_name.c_str());
if (!action_client_->wait_for_action_server(bt_wait_for_service_time_)) {
if (!action_client_->wait_for_action_server(bt_wait_for_service_timeout_)) {
RCLCPP_ERROR(
node_->get_logger(), "\"%s\" action server not available after waiting for 1 s",
action_name.c_str());
Expand Down Expand Up @@ -465,7 +465,7 @@ class BtActionNode : public BT::ActionNodeBase
std::chrono::milliseconds bt_loop_duration_;

// The timeout value for waiting for a service to response
std::chrono::milliseconds bt_wait_for_service_time_;
std::chrono::milliseconds bt_wait_for_service_timeout_;

// To track the action server acknowledgement when a new goal is sent
std::shared_ptr<std::shared_future<typename rclcpp_action::ClientGoalHandle<ActionT>::SharedPtr>>
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -248,6 +248,9 @@ class BtActionServer
// Default timeout value while waiting for response from a server
std::chrono::milliseconds default_server_timeout_;

// The timeout value for waiting for a service to response
std::chrono::milliseconds bt_wait_for_service_timeout_;

// User-provided callbacks
OnGoalReceivedCallback on_goal_received_callback_;
OnLoopCallback on_loop_callback_;
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -158,6 +158,9 @@ bool BtActionServer<ActionT>::on_configure()
int default_server_timeout;
node->get_parameter("default_server_timeout", default_server_timeout);
default_server_timeout_ = std::chrono::milliseconds(default_server_timeout);
int bt_wait_for_service_timeout;
node->get_parameter("bt_wait_for_service_timeout", bt_wait_for_service_timeout);
bt_wait_for_service_timeout_ = std::chrono::milliseconds(bt_wait_for_service_timeout);

// Get error code id names to grab off of the blackboard
error_code_names_ = node->get_parameter("error_code_names").as_string_array();
Expand All @@ -172,6 +175,7 @@ bool BtActionServer<ActionT>::on_configure()
blackboard_->set<rclcpp::Node::SharedPtr>("node", client_node_); // NOLINT
blackboard_->set<std::chrono::milliseconds>("server_timeout", default_server_timeout_); // NOLINT
blackboard_->set<std::chrono::milliseconds>("bt_loop_duration", bt_loop_duration_); // NOLINT
blackboard_->set<std::chrono::milliseconds>("bt_wait_for_service_timeout_", bt_wait_for_service_timeout_); // NOLINT

return true;
}
Expand Down Expand Up @@ -235,6 +239,7 @@ bool BtActionServer<ActionT>::loadBehaviorTree(const std::string & bt_xml_filena
blackboard->set<rclcpp::Node::SharedPtr>("node", client_node_);
blackboard->set<std::chrono::milliseconds>("server_timeout", default_server_timeout_);
blackboard->set<std::chrono::milliseconds>("bt_loop_duration", bt_loop_duration_);
blackboard->set<std::chrono::milliseconds>("bt_wait_for_service_timeout", bt_wait_for_service_timeout_);
}
} catch (const std::exception & e) {
RCLCPP_ERROR(logger_, "Exception when loading BT: %s", e.what());
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -59,8 +59,8 @@ class BtCancelActionNode : public BT::ActionNodeBase
server_timeout_ =
config().blackboard->template get<std::chrono::milliseconds>("server_timeout");
getInput<std::chrono::milliseconds>("server_timeout", server_timeout_);
bt_wait_for_service_time_ =
config().blackboard->template get<std::chrono::milliseconds>("bt_wait_for_service_time");
bt_wait_for_service_timeout_ =
config().blackboard->template get<std::chrono::milliseconds>("bt_wait_for_service_timeout_");

std::string remapped_action_name;
if (getInput("server_name", remapped_action_name)) {
Expand Down Expand Up @@ -91,7 +91,7 @@ class BtCancelActionNode : public BT::ActionNodeBase

// Make sure the server is actually there before continuing
RCLCPP_DEBUG(node_->get_logger(), "Waiting for \"%s\" action server", action_name.c_str());
if (!action_client_->wait_for_action_server(bt_wait_for_service_time_)) {
if (!action_client_->wait_for_action_server(bt_wait_for_service_timeout_)) {
RCLCPP_ERROR(
node_->get_logger(), "\"%s\" action server not available after waiting for 1 s",
action_name.c_str());
Expand Down Expand Up @@ -171,7 +171,7 @@ class BtCancelActionNode : public BT::ActionNodeBase
// new action goal is canceled
std::chrono::milliseconds server_timeout_;
// The timeout value for waiting for a service to response
std::chrono::milliseconds bt_wait_for_service_time_;
std::chrono::milliseconds bt_wait_for_service_timeout_;
};

} // namespace nav2_behavior_tree
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -62,8 +62,8 @@ class BtServiceNode : public BT::ActionNodeBase
server_timeout_ =
config().blackboard->template get<std::chrono::milliseconds>("server_timeout");
getInput<std::chrono::milliseconds>("server_timeout", server_timeout_);
bt_wait_for_service_time_ =
config().blackboard->template get<std::chrono::milliseconds>("bt_wait_for_service_time");
bt_wait_for_service_timeout_ =
config().blackboard->template get<std::chrono::milliseconds>("bt_wait_for_service_timeout_");

// Now that we have node_ to use, create the service client for this BT service
getInput("service_name", service_name_);
Expand All @@ -79,7 +79,7 @@ class BtServiceNode : public BT::ActionNodeBase
RCLCPP_DEBUG(
node_->get_logger(), "Waiting for \"%s\" service",
service_name_.c_str());
if (!service_client_->wait_for_service(bt_wait_for_service_time_)) {
if (!service_client_->wait_for_service(bt_wait_for_service_timeout_)) {
RCLCPP_ERROR(
node_->get_logger(), "\"%s\" service server not available after waiting for 1 s",
service_node_name.c_str());
Expand Down Expand Up @@ -252,7 +252,7 @@ class BtServiceNode : public BT::ActionNodeBase
std::chrono::milliseconds bt_loop_duration_;

// The timeout value for waiting for a service to response
std::chrono::milliseconds bt_wait_for_service_time_;
std::chrono::milliseconds bt_wait_for_service_timeout_;

// To track the server response when a new request is sent
std::shared_future<typename ServiceT::Response::SharedPtr> future_result_;
Expand Down
1 change: 1 addition & 0 deletions nav2_bringup/params/nav2_multirobot_params_1.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ bt_navigator:
odom_topic: /odom
bt_loop_duration: 10
default_server_timeout: 20
bt_wait_for_service_timeout: 1000.0
action_server_result_timeout: 900.0
navigators: ["navigate_to_pose", "navigate_through_poses"]
navigate_to_pose:
Expand Down
1 change: 1 addition & 0 deletions nav2_bringup/params/nav2_multirobot_params_2.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ bt_navigator:
odom_topic: /odom
bt_loop_duration: 10
default_server_timeout: 20
bt_wait_for_service_timeout: 1000.0
action_server_result_timeout: 900.0
navigators: ["navigate_to_pose", "navigate_through_poses"]
navigate_to_pose:
Expand Down
1 change: 1 addition & 0 deletions nav2_bringup/params/nav2_multirobot_params_all.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ bt_navigator:
odom_topic: /odom
bt_loop_duration: 10
default_server_timeout: 20
bt_wait_for_service_timeout: 1000.0
action_server_result_timeout: 900.0
navigators: ["navigate_to_pose", "navigate_through_poses"]
navigate_to_pose:
Expand Down
1 change: 1 addition & 0 deletions nav2_bringup/params/nav2_params.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ bt_navigator:
odom_topic: /odom
bt_loop_duration: 10
default_server_timeout: 20
bt_wait_for_service_timeout: 1000.0
action_server_result_timeout: 900.0
navigators: ["navigate_to_pose", "navigate_through_poses"]
navigate_to_pose:
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ bt_navigator:
odom_topic: /odom
bt_loop_duration: 10
default_server_timeout: 20
bt_wait_for_service_timeout: 1000.0
navigators: ["navigate_to_pose", "navigate_through_poses"]
navigate_to_pose:
plugin: "nav2_bt_navigator/NavigateToPoseNavigator"
Expand Down

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