15.2.8.1. ReaderListener

class eprosima::fastrtps::rtps::ReaderListener

Class ReaderListener, to be used by the user to override some of is virtual method to program actions to certain events.

Subclassed by eprosima::fastdds::dds::builtin::TypeLookupReplyListener, eprosima::fastdds::dds::builtin::TypeLookupRequestListener, eprosima::fastrtps::rtps::PDPListener, eprosima::fastrtps::rtps::WLPListener

Public Functions

void onReaderMatched(RTPSReader *reader, MatchingInfo &info)

This method is invoked when a new reader matches

Parameters

  • reader: Matching reader

  • info: Matching information of the reader

void onReaderMatched(RTPSReader *reader, const fastdds::dds::SubscriptionMatchedStatus &info)

This method is invoked when a new reader matches

Parameters

  • reader: Matching reader

  • info: Subscription matching information

void onNewCacheChangeAdded(RTPSReader *reader, const CacheChange_t *const change)

This method is called when a new CacheChange_t is added to the ReaderHistory.

Parameters

  • reader: Pointer to the reader.

  • change: Pointer to the CacheChange_t. This is a const pointer to const data to indicate that the user should not dispose of this data himself. To remove the data call the remove_change method of the ReaderHistory. reader->getHistory()->remove_change((CacheChange_t*)change).

void on_liveliness_changed(RTPSReader *reader, const LivelinessChangedStatus &status)

Method called when the livelivess of a reader changes.

Parameters

  • reader: The reader

  • status: The liveliness changed status

void on_requested_incompatible_qos(RTPSReader *reader, eprosima::fastdds::dds::PolicyMask qos)

This method is called when a new Writer is discovered, with a Topic that matches that of a local reader, but with an offered QoS that is incompatible with the one requested by the local reader

Parameters

  • reader: Pointer to the RTPSReader.

  • qos: A mask with the bits of all incompatible Qos activated.