Add stop agent

* Fix graph manager datawriters

Fixes

Fix

Fix destruction

* Revert "Fix graph manager datawriters"

This reverts commit 2847a2ebc3.

* Initial

(cherry picked from commit 646ca52aab)

Co-authored-by: Pablo Garrido <pablogs9@gmail.com>

micro_ros_agent/cmake/Config.cmake.in

@@ -0,0 +1,32 @@
+# Copyright 2016 Proyectos y Sistemas de Mantenimiento SL (eProsima).
+#
+# 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.
+
+set(@PROJECT_NAME@_VERSION @PROJECT_VERSION@)
+
+@PACKAGE_INIT@
+
+if(MSVC OR MSVC_IDE)
+    set_and_check(@PROJECT_NAME@_BIN_DIR "@PACKAGE_BIN_INSTALL_DIR@")
+endif()
+set_and_check(@PROJECT_NAME@_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
+set_and_check(@PROJECT_NAME@_LIB_DIR "@PACKAGE_LIB_INSTALL_DIR@")
+set_and_check(@PROJECT_NAME@_DATA_DIR "@PACKAGE_DATA_INSTALL_DIR@")
+
+foreach(d @_deps@)
+    list(GET d 0 _name)
+    list(GET d 1 _version)
+    find_package(${_name} ${_version} REQUIRED)
+endforeach()
+
+include(${@PROJECT_NAME@_DATA_DIR}/@PROJECT_NAME@/cmake/@PROJECT_NAME@Targets.cmake)

micro_ros_agent/include/agent/Agent.hpp

@@ -32,20 +32,103 @@ public:
 
     ~Agent() = default;
 
+    /**
+     * @brief   Agent class shall not be copy constructible.
+     */
+    UXR_AGENT_EXPORT Agent(
+            const Agent &) = delete;
+
+    UXR_AGENT_EXPORT Agent(
+            Agent &&) = delete;
+
+    /**
+     * @brief   Agent class shall not be copy assignable.
+     */
+    UXR_AGENT_EXPORT Agent& operator =(
+            const Agent &) = delete;
+
+    UXR_AGENT_EXPORT Agent& operator =(
+            Agent &&) = delete;
+
+    static Agent& getInstance()
+    {
+        static Agent instance;
+        return instance;
+    }
+
     bool create(
             int argc,
             char** argv);
 
     void run();
 
-private:
+    void stop();
 
+    void add_callbacks();
+
+private:
     eprosima::uxr::AgentInstance& xrce_dds_agent_instance_;
     std::map<eprosima::fastdds::dds::DomainId_t, std::shared_ptr<graph_manager::GraphManager>> graph_manager_map_;
-
     std::shared_ptr<graph_manager::GraphManager> find_or_create_graph_manager(eprosima::fastdds::dds::DomainId_t domain_id);
+    bool started = false;
 };
 
+template<typename AgentType>
+class AgentAPI
+{
+public:
+    AgentAPI()
+    : agent_instance_(agent_instance_.getInstance())
+    {};
+
+    ~AgentAPI() = default;
+
+    void create(uint16_t port)
+	{
+		xrce_dds_agent_instance_API.configure(port);
+	}
+
+	void create(std::string dev, const std::string baudrate);
+	void create(std::vector<std::string> devs, const std::string baudrate);
+	void create(const std::string baudrate);
+
+    void set_verbose_level(uint8_t verbose_level)
+    {
+        xrce_dds_agent_instance_API.set_verbose_level(verbose_level);
+    }
+
+    void run()
+    {
+        agent_instance_.add_callbacks();
+        xrce_dds_agent_instance_API.run();
+    }
+
+    void stop()
+    {
+        xrce_dds_agent_instance_API.stop();
+    }
+
+private:
+    Agent& agent_instance_;
+    eprosima::uxr::AgentInstanceAPI<AgentType> xrce_dds_agent_instance_API;
+};
+
+template<> inline UXR_AGENT_EXPORT void AgentAPI<eprosima::uxr::TermiosAgent>::create(std::string dev, const std::string baudrate)
+{
+    xrce_dds_agent_instance_API.configure(dev, baudrate);
+}
+
+template<> inline UXR_AGENT_EXPORT void AgentAPI<eprosima::uxr::MultiTermiosAgent>::create(std::vector<std::string> devs, const std::string baudrate)
+{
+    xrce_dds_agent_instance_API.configure(devs, baudrate);
+
+}
+
+template<> inline UXR_AGENT_EXPORT void AgentAPI<eprosima::uxr::PseudoTerminalAgent>::create(const std::string baudrate)
+{
+    xrce_dds_agent_instance_API.configure(baudrate);
+}
+
 }  // namespace agent
 }  // namespace uros
 #endif  // _UROS_AGENT_AGENT_HPP

micro_ros_agent/include/agent/graph_manager/graph_manager.hpp

@@ -80,7 +80,16 @@ public:
     /**
      * @brief   Default destructor.
      */
-    ~GraphManager() = default;
+    ~GraphManager()
+    {
+        exit = true;
+        cv_.notify_one();
+
+        if (microros_graph_publisher_.joinable())
+        {
+            microros_graph_publisher_.join();
+        }
+    }
 
     /**
      * @brief   Implementation of the notification logic that updates the micro-ROS graph.
@@ -89,28 +98,22 @@ public:
 
     /**
      * @brief   Adds a DDS participant to the graph tree.
-     * @param   participant Pointer to the participant to be added to the graph.
+     * @param   participant eprosima::fastdds::dds::DomainParticipant to be added.
-     */
+     * @param   from_microros if this participant has been added from micro-ROS.
-    void add_participant(
-            const eprosima::fastdds::dds::DomainParticipant* participant);
-
-    /**
-     * @brief   Adds a DDS participant to the graph tree.
-     * @param   guid rtps::GUID_t of the participant to be added.
-     * @param   node_name Name of the ROS 2 node associated to the given participant.
      * @param   enclave ROS 2 enclave.
      */
     void add_participant(
-            const eprosima::fastrtps::rtps::GUID_t& guid,
+            const eprosima::fastdds::dds::DomainParticipant* participant,
-            const std::string& node_name,
+            bool from_microros = true,
-            const std::string& enclave);
+            const std::string& enclave = "/");
 
     /**
      * @brief   Removes a DDS participant from the graph tree.
-     * @param   guid rtps::GUID_t of the participant to be removed.
+     * @param   participant eprosima::fastdds::dds::DomainParticipant to be removed.
      */
     void remove_participant(
-            const eprosima::fastrtps::rtps::GUID_t& guid);
+        const eprosima::fastdds::dds::DomainParticipant* participant,
+        bool from_microros = true);
 
     /**
      * @brief   Adds a DDS datawriter to the graph tree.
@@ -292,14 +295,28 @@ private:
      */
     void update_node_entities_info();
 
+    /**
+     * @brief   Retrieves node name and namespace from
+     *          participant.
+     * @param   participant_name DDS participant name.
+     * @param   node_name ROS2 Node name.
+     * @param   namespace ROS2 Node namespace.
+     */
+    void get_name_and_namespace(
+            std::string participant_name,
+            std::string& node_name,
+            std::string& node_namespace);
+
+    bool exit = false;
     eprosima::fastdds::dds::DomainId_t domain_id_;
     bool graph_changed_;
     bool display_on_change_;
-    const char * enclave_;
     std::thread microros_graph_publisher_;
     std::mutex mtx_;
     std::condition_variable cv_;
 
+    eprosima::fastdds::dds::DataWriterQos datawriter_qos_;
+
     rmw_dds_common::GraphCache graphCache_;
     std::unique_ptr<ParticipantListener> participant_listener_;
     std::unique_ptr<DatareaderListener> datareader_listener_;
@@ -311,9 +328,14 @@ private:
     std::unique_ptr<eprosima::fastdds::dds::Subscriber> subscriber_;
     std::unique_ptr<eprosima::fastdds::dds::Topic> ros_discovery_topic_;
     std::unique_ptr<eprosima::fastdds::dds::Topic> ros_to_microros_graph_topic_;
-    std::unique_ptr<eprosima::fastdds::dds::DataWriter> ros_discovery_datawriter_;
     std::unique_ptr<eprosima::fastdds::dds::DataWriter> ros_to_microros_graph_datawriter_;
     std::unique_ptr<eprosima::fastdds::dds::DataReader> ros_discovery_datareader_;
+
+    // Store a auxiliary publishers and datawriter for each participant created in micro-ROS
+    std::map<
+        const eprosima::fastdds::dds::DomainParticipant*,
+        std::unique_ptr<eprosima::fastdds::dds::DataWriter>
+    > micro_ros_graph_datawriters_;
 };
 
 }  // namespace graph_manager

micro_ros_agent/launch/micro_ros_agent_launch.py

@@ -7,6 +7,6 @@ def generate_launch_description():
             package='micro_ros_agent',
             executable='micro_ros_agent',
             name='micro_ros_agent',
-            arguments={'udp4 --port 8888 -v6'}
+            arguments={"udp4", "-p", "8888", "-v6"}
         )
     ])

micro_ros_agent/src/agent/Agent.cpp

@@ -29,8 +29,12 @@ bool Agent::create(
         int argc,
         char** argv)
 {
-    bool result = xrce_dds_agent_instance_.create(argc, argv);
+    return xrce_dds_agent_instance_.create(argc, argv);
-    if (result)
+}
+
+void Agent::add_callbacks()
+{
+    if (!started)
     {
         /**
          * Add CREATE_PARTICIPANT callback.
@@ -40,12 +44,7 @@ bool Agent::create(
             ([&](
                 const eprosima::fastdds::dds::DomainParticipant* participant) -> void
             {
-                auto graph_manager_ =
+                auto graph_manager_ = find_or_create_graph_manager(participant->get_domain_id());
-                    find_or_create_graph_manager(eprosima::fastdds::dds::DomainId_t(
-                        participant->get_domain_id()
-                    )
-                );
-
                 graph_manager_->add_participant(participant);
             });
         xrce_dds_agent_instance_.add_middleware_callback(
@@ -61,13 +60,8 @@ bool Agent::create(
             ([&](
                 const eprosima::fastdds::dds::DomainParticipant* participant) -> void
             {
-                auto graph_manager_ =
+                auto graph_manager_ = find_or_create_graph_manager(participant->get_domain_id());
-                    find_or_create_graph_manager(eprosima::fastdds::dds::DomainId_t(
+                graph_manager_->remove_participant(participant);
-                        participant->get_domain_id()
-                    )
-                );
-
-                graph_manager_->remove_participant(participant->guid());
             });
         xrce_dds_agent_instance_.add_middleware_callback(
             eprosima::uxr::Middleware::Kind::FASTDDS,
@@ -84,11 +78,7 @@ bool Agent::create(
                 const eprosima::fastdds::dds::DomainParticipant* participant,
                 const eprosima::fastdds::dds::DataWriter* datawriter) -> void
             {
-                auto graph_manager_ =
+                auto graph_manager_ = find_or_create_graph_manager(participant->get_domain_id());
-                    find_or_create_graph_manager(eprosima::fastdds::dds::DomainId_t(
-                        participant->get_domain_id()
-                    )
-                );
 
                 // TODO(jamoralp): Workaround for Fast-DDS bug #9977. Remove when fixed
                 const eprosima::fastrtps::rtps::InstanceHandle_t instance_handle =
@@ -114,12 +104,7 @@ bool Agent::create(
                 const eprosima::fastdds::dds::DomainParticipant* participant,
                 const eprosima::fastdds::dds::DataWriter* datawriter) -> void
             {
-
+                auto graph_manager_ = find_or_create_graph_manager(participant->get_domain_id());
-                auto graph_manager_ =
-                    find_or_create_graph_manager(eprosima::fastdds::dds::DomainId_t(
-                        participant->get_domain_id()
-                    )
-                );
 
                 // TODO(jamoralp): Workaround for Fast-DDS bug #9977. Remove when fixed
                 const eprosima::fastrtps::rtps::InstanceHandle_t instance_handle =
@@ -144,11 +129,7 @@ bool Agent::create(
                 const eprosima::fastdds::dds::DomainParticipant* participant,
                 const eprosima::fastdds::dds::DataReader* datareader) -> void
             {
-                auto graph_manager_ =
+                auto graph_manager_ = find_or_create_graph_manager(participant->get_domain_id());
-                    find_or_create_graph_manager(eprosima::fastdds::dds::DomainId_t(
-                        participant->get_domain_id()
-                    )
-                );
 
                 // TODO(jamoralp): Workaround for Fast-DDS bug #9977. Remove when fixed
                 const eprosima::fastrtps::rtps::InstanceHandle_t instance_handle =
@@ -174,11 +155,7 @@ bool Agent::create(
                 const eprosima::fastdds::dds::DomainParticipant* participant,
                 const eprosima::fastdds::dds::DataReader* datareader) -> void
             {
-                auto graph_manager_ =
+                auto graph_manager_ = find_or_create_graph_manager(participant->get_domain_id());
-                    find_or_create_graph_manager(eprosima::fastdds::dds::DomainId_t(
-                        participant->get_domain_id()
-                    )
-                );
 
                 // TODO(jamoralp): Workaround for Fast-DDS bug #9977. Remove when fixed
                 const eprosima::fastrtps::rtps::InstanceHandle_t instance_handle =
@@ -192,9 +169,9 @@ bool Agent::create(
             eprosima::uxr::Middleware::Kind::FASTDDS,
             eprosima::uxr::middleware::CallbackKind::DELETE_DATAREADER,
             std::move(on_delete_datareader));
-    }
 
-    return result;
+        started = true;
+    }
 }
 
 void Agent::run()
@@ -202,18 +179,21 @@ void Agent::run()
     return xrce_dds_agent_instance_.run();
 }
 
+void Agent::stop()
+{
+    return xrce_dds_agent_instance_.stop();
+}
+
 std::shared_ptr<graph_manager::GraphManager> Agent::find_or_create_graph_manager(eprosima::fastdds::dds::DomainId_t domain_id)
 {
-    auto it = graph_manager_map_.find(domain_id);
+
+auto it = graph_manager_map_.find(domain_id);
 
     if (it != graph_manager_map_.end()) {
         return it->second;
     }else{
         return graph_manager_map_.insert(
-            std::pair<
+            std::make_pair(
-                eprosima::fastdds::dds::DomainId_t,
-                std::shared_ptr<graph_manager::GraphManager>
-            >(
                 domain_id,
                 std::make_shared<graph_manager::GraphManager>(domain_id)
             )

micro_ros_agent/src/agent/graph_manager/graph_manager.cpp

@@ -22,11 +22,9 @@ namespace agent {
 namespace graph_manager {
 
 GraphManager::GraphManager(eprosima::fastdds::dds::DomainId_t domain_id)
-    // : eprosima::fastrtps::ParticipantListener()
     : domain_id_(domain_id)
     , graph_changed_(false)
     , display_on_change_(false)
-    , enclave_("/")
     , mtx_()
     , cv_()
     , graphCache_()
@@ -37,23 +35,27 @@ GraphManager::GraphManager(eprosima::fastdds::dds::DomainId_t domain_id)
     , microros_graph_info_typesupport_(std::make_unique<
         eprosima::fastdds::dds::TypeSupport>(new graph_manager::MicrorosGraphInfoTypeSupport()))
 {
+    eprosima::fastdds::dds::DomainParticipantFactory::get_instance()->load_profiles();
+
     // Create DomainParticipant
     eprosima::fastdds::dds::DomainParticipantQos participant_qos =
         eprosima::fastdds::dds::DomainParticipantFactory::get_instance()->get_default_participant_qos();
 
-    size_t length = snprintf(nullptr, 0, "enclave=%s;", enclave_) + 1;
+    const char * enclave = "/";
+    size_t length = snprintf(nullptr, 0, "enclave=%s;", enclave) + 1;
     participant_qos.user_data().resize(length);
     snprintf(reinterpret_cast<char *>(participant_qos.user_data().data_vec().data()),
-        length, "enclave=%s;", enclave_);
+        length, "enclave=%s;", enclave);
 
-    participant_qos.name(enclave_);
+    participant_qos.name(enclave);
     participant_qos.wire_protocol().builtin.readerHistoryMemoryPolicy =
         eprosima::fastrtps::rtps::PREALLOCATED_WITH_REALLOC_MEMORY_MODE;
     participant_qos.wire_protocol().builtin.writerHistoryMemoryPolicy =
         eprosima::fastrtps::rtps::PREALLOCATED_WITH_REALLOC_MEMORY_MODE;
 
+    eprosima::fastdds::dds::StatusMask par_mask = eprosima::fastdds::dds::StatusMask::none();
     participant_.reset(eprosima::fastdds::dds::DomainParticipantFactory::get_instance()->
-        create_participant(domain_id_, participant_qos, participant_listener_.get()));
+        create_participant(domain_id_, participant_qos, participant_listener_.get(), par_mask));
 
     // Register participant within typesupport
     participant_->register_type(*participant_info_typesupport_);
@@ -77,28 +79,26 @@ GraphManager::GraphManager(eprosima::fastdds::dds::DomainId_t domain_id)
         eprosima::fastdds::dds::TOPIC_QOS_DEFAULT));
 
     // Create datawriters
-    eprosima::fastdds::dds::DataWriterQos datawriter_qos =
+    datawriter_qos_ =
         eprosima::fastdds::dds::DATAWRITER_QOS_DEFAULT;
 
-    datawriter_qos.history().kind =
+    datawriter_qos_.history().kind =
         eprosima::fastdds::dds::HistoryQosPolicyKind::KEEP_LAST_HISTORY_QOS;
-    datawriter_qos.history().depth = 1;
+    datawriter_qos_.history().depth = 1;
-    datawriter_qos.endpoint().history_memory_policy =
+    datawriter_qos_.endpoint().history_memory_policy =
         eprosima::fastrtps::rtps::MemoryManagementPolicy::PREALLOCATED_WITH_REALLOC_MEMORY_MODE;
-    datawriter_qos.publish_mode().kind =
+    datawriter_qos_.publish_mode().kind =
         eprosima::fastdds::dds::PublishModeQosPolicyKind::ASYNCHRONOUS_PUBLISH_MODE;
-    datawriter_qos.reliability().kind =
+    datawriter_qos_.reliability().kind =
         eprosima::fastdds::dds::ReliabilityQosPolicyKind::RELIABLE_RELIABILITY_QOS;
-    datawriter_qos.durability().kind =
+    datawriter_qos_.durability().kind =
         eprosima::fastdds::dds::DurabilityQosPolicyKind::TRANSIENT_LOCAL_DURABILITY_QOS;
 
-    ros_discovery_datawriter_.reset(
+    eprosima::fastdds::dds::DataWriterQos ros_to_microros_datawriter_qos_ = datawriter_qos_;
-        publisher_->create_datawriter(ros_discovery_topic_.get(), datawriter_qos));
+    ros_to_microros_datawriter_qos_.history().kind =
-
-    datawriter_qos.history().kind =
         eprosima::fastdds::dds::HistoryQosPolicyKind::KEEP_ALL_HISTORY_QOS;
     ros_to_microros_graph_datawriter_.reset(
-        publisher_->create_datawriter(ros_to_microros_graph_topic_.get(), datawriter_qos));
+        publisher_->create_datawriter(ros_to_microros_graph_topic_.get(), ros_to_microros_datawriter_qos_));
 
     // Create datareaders
 
@@ -137,10 +137,15 @@ inline void GraphManager::publish_microros_graph()
             std::unique_lock<std::mutex> lock(mtx_);
             cv_.wait(lock, [this]()
             {
-                return this->graph_changed_;
+                return this->graph_changed_ || exit;
             });
         }
 
+        if (exit)
+        {
+            break;
+        }
+        
         if (display_on_change_)
         {
             std::cout << "Updated uros Graph: graph changed" << std::endl;
@@ -292,34 +297,55 @@ inline void GraphManager::publish_microros_graph()
 }
 
 void GraphManager::add_participant(
-        const eprosima::fastdds::dds::DomainParticipant* participant)
+        const eprosima::fastdds::dds::DomainParticipant* participant,
-{
+        bool from_microros,
-    const eprosima::fastdds::dds::DomainParticipantQos qos = participant->get_qos();
-    this->add_participant(participant->guid(), qos.name().to_string(), enclave_);
-}
-
-void GraphManager::add_participant(
-        const eprosima::fastrtps::rtps::GUID_t& guid,
-        const std::string& node_name,
         const std::string& enclave)
 {
-    const rmw_gid_t gid = rmw_fastrtps_shared_cpp::create_rmw_gid("rmw_fastrtps_cpp", guid);
+    const eprosima::fastdds::dds::DomainParticipantQos qos = participant->get_qos();
+    const rmw_gid_t gid = rmw_fastrtps_shared_cpp::create_rmw_gid("rmw_fastrtps_cpp", participant->guid());
 
     graphCache_.add_participant(gid, enclave);
 
-    if (node_name != enclave) // Do not add root node
+    // Do not add root node and
+    // do not announce non-micro-ROS participants
+    if (qos.name().to_string() != "/" && from_microros)
     {
+        std::string isolated_node_name, isolated_namespace;
+        get_name_and_namespace(qos.name().to_string(), isolated_node_name, isolated_namespace);
+
         rmw_dds_common::msg::ParticipantEntitiesInfo info =
-            graphCache_.add_node(gid, node_name, enclave_);
+            graphCache_.add_node(gid, isolated_node_name, isolated_namespace);
-        ros_discovery_datawriter_->write(static_cast<void *>(&info));
+
+        auto it = micro_ros_graph_datawriters_.find(participant);
+        if (it == micro_ros_graph_datawriters_.end())
+        {
+            // Create datawriter
+            std::unique_ptr<eprosima::fastdds::dds::DataWriter> datawriter;
+            datawriter.reset(publisher_->create_datawriter(ros_discovery_topic_.get(), datawriter_qos_));
+
+            it = micro_ros_graph_datawriters_.insert(
+                std::make_pair(participant, std::move(datawriter))).first;
+        }
+
+        it->second->write(static_cast<void *>(&info));
     }
 }
 
 void GraphManager::remove_participant(
-        const eprosima::fastrtps::rtps::GUID_t& guid)
+        const eprosima::fastdds::dds::DomainParticipant* participant,
+        bool from_microros)
 {
-    const rmw_gid_t gid = rmw_fastrtps_shared_cpp::create_rmw_gid("rmw_fastrtps_cpp", guid);
+    const rmw_gid_t gid = rmw_fastrtps_shared_cpp::create_rmw_gid("rmw_fastrtps_cpp", participant->guid());
     graphCache_.remove_participant(gid);
+
+    if (from_microros)
+    {
+        rmw_dds_common::msg::ParticipantEntitiesInfo info;
+        rmw_dds_common::convert_gid_to_msg(&gid, &info.gid);
+        auto it = micro_ros_graph_datawriters_.find(participant);
+        it->second->write(static_cast<void *>(&info));
+    }
+    micro_ros_graph_datawriters_.erase(participant);
 }
 
 void GraphManager::add_datawriter(
@@ -449,14 +475,18 @@ void GraphManager::associate_entity(
     {
         case dds::xrce::OBJK_DATAWRITER:
         {
+            std::string isolated_node_name, isolated_namespace;
+            get_name_and_namespace(qos.name().c_str(), isolated_node_name, isolated_namespace);
             info = graphCache_.associate_writer(
-                entity_gid, participant_gid, qos.name().c_str(), enclave_);
+                entity_gid, participant_gid, isolated_node_name, isolated_namespace);
             break;
         }
         case dds::xrce::OBJK_DATAREADER:
         {
+            std::string isolated_node_name, isolated_namespace;
+            get_name_and_namespace(qos.name().c_str(), isolated_node_name, isolated_namespace);
             info = graphCache_.associate_reader(
-                entity_gid, participant_gid, qos.name().c_str(), enclave_);
+                entity_gid, participant_gid, isolated_node_name, isolated_namespace);
             break;
         }
         default:
@@ -464,7 +494,9 @@ void GraphManager::associate_entity(
             break;
         }
     }
-    ros_discovery_datawriter_->write(static_cast<void *>(&info));
+
+    auto it = micro_ros_graph_datawriters_.find(participant);
+    it->second->write(static_cast<void *>(&info));
 }
 
 
@@ -556,6 +588,43 @@ void GraphManager::update_node_entities_info()
     }
 }
 
+void GraphManager::get_name_and_namespace(
+    std::string participant_name,
+    std::string& node_name,
+    std::string& node_namespace)
+{
+    // Remove first / if exists
+    if (participant_name.rfind("/", 0) == 0)
+    {
+        participant_name.erase(participant_name.begin());
+    }
+
+    // Split node name in domain and node name
+    std::istringstream iss(participant_name);
+    std::vector<std::string> result;
+    std::string token;
+
+    while(std::getline(iss, token, '/'))
+    {
+        result.push_back(token);
+    }
+
+    if (result.size() > 1)
+    {
+        node_namespace = "/" + result[0];
+        for (size_t i = 1; i < result.size(); i++)
+        {
+            node_name.append(result[i] + "/");
+        }
+        node_name.pop_back();
+    }
+    else
+    {
+        node_name = participant_name;
+        node_namespace = "/";
+    }
+}
+
 GraphManager::ParticipantListener::ParticipantListener(
         GraphManager* graph_manager)
     : eprosima::fastdds::dds::DomainParticipantListener()
@@ -581,13 +650,13 @@ void GraphManager::ParticipantListener::on_participant_discovery(
             const std::string enclave =
                 std::string(name_found->second.begin(), name_found->second.end());
 
-            graphManager_from_->add_participant(participant->guid(), info.info.m_participantName.to_string(), enclave);
+            graphManager_from_->add_participant(participant, false, enclave);
             break;
         }
         case eprosima::fastrtps::rtps::ParticipantDiscoveryInfo::REMOVED_PARTICIPANT:
         case eprosima::fastrtps::rtps::ParticipantDiscoveryInfo::DROPPED_PARTICIPANT:
         {
-            graphManager_from_->remove_participant(info.info.m_guid);
+            graphManager_from_->remove_participant(participant, false);
             break;
         }
         default:
@@ -656,7 +725,6 @@ void GraphManager::ParticipantListener::on_subscriber_discovery(
         eprosima::fastrtps::rtps::ReaderDiscoveryInfo&& info)
 {
     process_discovery_info<eprosima::fastrtps::rtps::ReaderDiscoveryInfo>(info);
-    // graphManager_from_->associate_entity(info.info.guid(), participant, dds::xrce::OBJK_DATAREADER);
 }
 
 void GraphManager::ParticipantListener::on_publisher_discovery(
@@ -664,7 +732,6 @@ void GraphManager::ParticipantListener::on_publisher_discovery(
         eprosima::fastrtps::rtps::WriterDiscoveryInfo&& info)
 {
     process_discovery_info<eprosima::fastrtps::rtps::WriterDiscoveryInfo>(info);
-    // graphManager_from_->associate_entity(info.info.guid(), participant, dds::xrce::OBJK_DATAWRITER);
 }
 
 GraphManager::DatareaderListener::DatareaderListener(

micro_ros_agent/src/main.cpp

@@ -27,6 +27,11 @@ int main(int argc, char** argv)
     std::vector<std::string> params;
     for (int i = 0; i < argc; ++i)
     {
+        if(strcmp("--ros-args", argv[i]) == 0)
+        {
+            argc = i;
+            break;
+        }
         params.emplace_back(std::string(argv[i]));
     }