/
node_impl.hpp
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/
node_impl.hpp
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// Copyright 2014 Open Source Robotics Foundation, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef RCLCPP__NODE_IMPL_HPP_
#define RCLCPP__NODE_IMPL_HPP_
#include <rmw/error_handling.h>
#include <rmw/rmw.h>
#include <algorithm>
#include <chrono>
#include <cstdlib>
#include <iostream>
#include <limits>
#include <map>
#include <memory>
#include <sstream>
#include <stdexcept>
#include <string>
#include <utility>
#include <vector>
#include "rcl/publisher.h"
#include "rcl/subscription.h"
#include "rclcpp/contexts/default_context.hpp"
#include "rclcpp/create_client.hpp"
#include "rclcpp/create_generic_publisher.hpp"
#include "rclcpp/create_generic_subscription.hpp"
#include "rclcpp/create_publisher.hpp"
#include "rclcpp/create_service.hpp"
#include "rclcpp/create_subscription.hpp"
#include "rclcpp/create_timer.hpp"
#include "rclcpp/detail/resolve_enable_topic_statistics.hpp"
#include "rclcpp/parameter.hpp"
#include "rclcpp/qos.hpp"
#include "rclcpp/timer.hpp"
#include "rclcpp/type_support_decl.hpp"
#include "rclcpp/visibility_control.hpp"
#ifndef RCLCPP__NODE_HPP_
#include "node.hpp"
#endif
namespace rclcpp
{
RCLCPP_LOCAL
inline
std::string
extend_name_with_sub_namespace(const std::string & name, const std::string & sub_namespace)
{
std::string name_with_sub_namespace(name);
if (sub_namespace != "" && name.front() != '/' && name.front() != '~') {
name_with_sub_namespace = sub_namespace + "/" + name;
}
return name_with_sub_namespace;
}
template<typename MessageT, typename AllocatorT, typename PublisherT>
std::shared_ptr<PublisherT>
Node::create_publisher(
const std::string & topic_name,
const rclcpp::QoS & qos,
const PublisherOptionsWithAllocator<AllocatorT> & options)
{
return rclcpp::create_publisher<MessageT, AllocatorT, PublisherT>(
*this,
extend_name_with_sub_namespace(topic_name, this->get_sub_namespace()),
qos,
options);
}
template<
typename MessageT,
typename CallbackT,
typename AllocatorT,
typename SubscriptionT,
typename MessageMemoryStrategyT>
std::shared_ptr<SubscriptionT>
Node::create_subscription(
const std::string & topic_name,
const rclcpp::QoS & qos,
CallbackT && callback,
const SubscriptionOptionsWithAllocator<AllocatorT> & options,
typename MessageMemoryStrategyT::SharedPtr msg_mem_strat)
{
return rclcpp::create_subscription<MessageT>(
*this,
extend_name_with_sub_namespace(topic_name, this->get_sub_namespace()),
qos,
std::forward<CallbackT>(callback),
options,
msg_mem_strat);
}
template<typename DurationRepT, typename DurationT, typename CallbackT>
typename rclcpp::WallTimer<CallbackT>::SharedPtr
Node::create_wall_timer(
std::chrono::duration<DurationRepT, DurationT> period,
CallbackT callback,
rclcpp::CallbackGroup::SharedPtr group)
{
return rclcpp::create_wall_timer(
period,
std::move(callback),
group,
this->node_base_.get(),
this->node_timers_.get());
}
template<typename ServiceT>
typename Client<ServiceT>::SharedPtr
Node::create_client(
const std::string & service_name,
const rmw_qos_profile_t & qos_profile,
rclcpp::CallbackGroup::SharedPtr group)
{
return rclcpp::create_client<ServiceT>(
node_base_,
node_graph_,
node_services_,
extend_name_with_sub_namespace(service_name, this->get_sub_namespace()),
qos_profile,
group);
}
template<typename ServiceT, typename CallbackT>
typename rclcpp::Service<ServiceT>::SharedPtr
Node::create_service(
const std::string & service_name,
CallbackT && callback,
const rmw_qos_profile_t & qos_profile,
rclcpp::CallbackGroup::SharedPtr group)
{
return rclcpp::create_service<ServiceT, CallbackT>(
node_base_,
node_services_,
extend_name_with_sub_namespace(service_name, this->get_sub_namespace()),
std::forward<CallbackT>(callback),
qos_profile,
group);
}
template<typename AllocatorT>
std::shared_ptr<rclcpp::GenericPublisher>
Node::create_generic_publisher(
const std::string & topic_name,
const std::string & topic_type,
const rclcpp::QoS & qos,
const rclcpp::PublisherOptionsWithAllocator<AllocatorT> & options)
{
return rclcpp::create_generic_publisher(
node_topics_,
extend_name_with_sub_namespace(topic_name, this->get_sub_namespace()),
topic_type,
qos,
options
);
}
template<typename AllocatorT>
std::shared_ptr<rclcpp::GenericSubscription>
Node::create_generic_subscription(
const std::string & topic_name,
const std::string & topic_type,
const rclcpp::QoS & qos,
std::function<void(std::shared_ptr<rclcpp::SerializedMessage>)> callback,
const rclcpp::SubscriptionOptionsWithAllocator<AllocatorT> & options)
{
return rclcpp::create_generic_subscription(
node_topics_,
extend_name_with_sub_namespace(topic_name, this->get_sub_namespace()),
topic_type,
qos,
std::move(callback),
options
);
}
template<typename ParameterT>
auto
Node::declare_parameter(
const std::string & name,
const ParameterT & default_value,
const rcl_interfaces::msg::ParameterDescriptor & parameter_descriptor,
bool ignore_override)
{
try {
return this->declare_parameter(
name,
rclcpp::ParameterValue(default_value),
parameter_descriptor,
ignore_override
).get<ParameterT>();
} catch (const ParameterTypeException & ex) {
throw exceptions::InvalidParameterTypeException(name, ex.what());
}
}
template<typename ParameterT>
auto
Node::declare_parameter(
const std::string & name,
const rcl_interfaces::msg::ParameterDescriptor & parameter_descriptor,
bool ignore_override)
{
// get advantage of parameter value template magic to get
// the correct rclcpp::ParameterType from ParameterT
rclcpp::ParameterValue value{ParameterT{}};
try {
return this->declare_parameter(
name,
value.get_type(),
parameter_descriptor,
ignore_override
).get<ParameterT>();
} catch (const ParameterTypeException &) {
throw exceptions::UninitializedStaticallyTypedParameterException(name);
}
}
template<typename ParameterT>
std::vector<ParameterT>
Node::declare_parameters(
const std::string & namespace_,
const std::map<std::string, ParameterT> & parameters,
bool ignore_overrides)
{
std::vector<ParameterT> result;
std::string normalized_namespace = namespace_.empty() ? "" : (namespace_ + ".");
std::transform(
parameters.begin(), parameters.end(), std::back_inserter(result),
[this, &normalized_namespace, ignore_overrides](auto element) {
return this->declare_parameter(
normalized_namespace + element.first,
element.second,
rcl_interfaces::msg::ParameterDescriptor(),
ignore_overrides);
}
);
return result;
}
template<typename ParameterT>
std::vector<ParameterT>
Node::declare_parameters(
const std::string & namespace_,
const std::map<
std::string,
std::pair<ParameterT, rcl_interfaces::msg::ParameterDescriptor>
> & parameters,
bool ignore_overrides)
{
std::vector<ParameterT> result;
std::string normalized_namespace = namespace_.empty() ? "" : (namespace_ + ".");
std::transform(
parameters.begin(), parameters.end(), std::back_inserter(result),
[this, &normalized_namespace, ignore_overrides](auto element) {
return static_cast<ParameterT>(
this->declare_parameter(
normalized_namespace + element.first,
element.second.first,
element.second.second,
ignore_overrides)
);
}
);
return result;
}
template<typename ParameterT>
bool
Node::get_parameter(const std::string & name, ParameterT & parameter) const
{
std::string sub_name = extend_name_with_sub_namespace(name, this->get_sub_namespace());
rclcpp::Parameter parameter_variant;
bool result = get_parameter(sub_name, parameter_variant);
if (result) {
parameter = static_cast<ParameterT>(parameter_variant.get_value<ParameterT>());
}
return result;
}
template<typename ParameterT>
bool
Node::get_parameter_or(
const std::string & name,
ParameterT & parameter,
const ParameterT & alternative_value) const
{
std::string sub_name = extend_name_with_sub_namespace(name, this->get_sub_namespace());
bool got_parameter = get_parameter(sub_name, parameter);
if (!got_parameter) {
parameter = alternative_value;
}
return got_parameter;
}
template<typename ParameterT>
ParameterT
Node::get_parameter_or(
const std::string & name,
const ParameterT & alternative_value) const
{
ParameterT parameter;
get_parameter_or(name, parameter, alternative_value);
return parameter;
}
// this is a partially-specialized version of get_parameter above,
// where our concrete type for ParameterT is std::map, but the to-be-determined
// type is the value in the map.
template<typename ParameterT>
bool
Node::get_parameters(
const std::string & prefix,
std::map<std::string, ParameterT> & values) const
{
std::map<std::string, rclcpp::Parameter> params;
bool result = node_parameters_->get_parameters_by_prefix(prefix, params);
if (result) {
for (const auto & param : params) {
values[param.first] = static_cast<ParameterT>(param.second.get_value<ParameterT>());
}
}
return result;
}
} // namespace rclcpp
#endif // RCLCPP__NODE_IMPL_HPP_