Publisher Use Cases
[Programming How-To's]

Working with publishers. More...

Setting up a publisher

• Set up participant

• Create a DDS_Publisher

      struct DDS_PublisherQos publisher_qos = DDS_PublisherQos_INITIALIZER;
      DDS_Publisher* publisher;
      struct DDS_PublisherListener publisher_listener =
          DDS_PublisherListener_INITIALIZER;
      DDS_ReturnCode_t retcode;
  
      /* MyPublisherListener_* functions are user defined to match
         DDS_PublisherListener functions */
      publisher_listener.as_datawriterlistener.on_offered_deadline_missed =
          MyPublisherListener_OfferedDeadlineMissed;
      publisher_listener.as_datawriterlistener.on_offered_incompatible_qos = 
          MyPublisherListener_OfferedIncompatibleQos;
      publisher_listener.as_datawriterlistener.on_liveliness_lost = 
          MyPublisherListener_LivelinessLost;
      publisher_listener.as_datawriterlistener.on_publication_matched = 
          MyPublisherListener_PublicationMatch;
  
      retcode = DDS_DomainParticipant_get_default_publisher_qos(participant, 
                                                      &publisher_qos);
  
      if (retcode != DDS_RETCODE_OK) {
          printf("***Error: failed to get default publisher qos\n");
      }
  
      publisher = DDS_DomainParticipant_create_publisher(participant, 
                                                         &publisher_qos, 
                                                         &publisher_listener /* or NULL */,
                                                         DDS_STATUS_MASK_ALL);
  
      if (publisher == NULL) {
          printf("***Error: failed to create publisher\n");
      }
  

Tearing down a publisher

• Delete DDS_Publisher:

      DDS_ReturnCode_t retcode;
  
      retcode = DDS_DomainParticipant_delete_publisher(participant, publisher);
  
      if (retcode != DDS_RETCODE_OK) {
          printf("***Error: failed to delete publisher\n");
      }