18.1.2.4. DomainParticipantListener¶

class fastdds.DomainParticipantListener¶

Class DomainParticipantListener, overrides behaviour towards certain events.

on_participant_discovery(participant, info)¶

This method is called when a new Participant is discovered, or a previously discovered participant changes its QOS or is removed.

Parameters

participant (DomainParticipant) – Pointer to the Participant which discovered the remote participant.
info (eprosima::fastrtps::rtps::ParticipantDiscoveryInfo) – Remote participant information. User can take ownership of the object.

on_publisher_discovery(participant, info)¶

This method is called when a new Publisher is discovered, or a previously discovered publisher changes its QOS or is removed.

Parameters

participant (DomainParticipant) – Pointer to the Participant which discovered the remote publisher.
info (eprosima::fastrtps::rtps::WriterDiscoveryInfo) – Remote publisher information. User can take ownership of the object.

on_subscriber_discovery(participant, info)¶

This method is called when a new Subscriber is discovered, or a previously discovered subscriber changes its QOS or is removed.

Parameters

participant (DomainParticipant) – Pointer to the Participant which discovered the remote subscriber.
info (eprosima::fastrtps::rtps::ReaderDiscoveryInfo) – Remote subscriber information. User can take ownership of the object.

on_type_dependencies_reply(participant, request_sample_id, dependencies)¶: This method is called when the typelookup client received a reply to a getTypeDependencies request. The user may want to retrieve these new types using the getTypes request and create a new DynamicType using the retrieved TypeObject.

on_type_discovery(participant, request_sample_id, topic, identifier, object, dyn_type)¶: This method is called when a participant discovers a new Type The ownership of all object belongs to the caller so if needs to be used after the method ends, a full copy should be perform (except for dyn_type due to its shared_ptr nature. For example: fastrtps::types::TypeIdentifier new_type_id = *identifier;

on_type_information_received(participant, topic_name, type_name, type_information)¶: This method is called when a participant receives a TypeInformation while discovering another participant.