[OSPL-Dev] Node monitoring using BuiltInTopic

[Rakesh pawar]

hi,

I am using Opensplice DDS for a test scenario. In this I have 10 ospl
nodes connected to each other through LAN. Now, each node should know the
starting and stopping of the other node in the network. I found out about
BuiltInTopic from opensplice forum, and it was given that we can monitor
nodes using that. Now, when we run BuiltInTopicSubscriber it shows us the
dynamic instance ID;

// typed holder for data samples
ParticipantBuiltinTopicDataSeqHolder data = new
ParticipantBuiltinTopicDataSeqHolder();

/* Resolve the node identification. */
int nodeId = data.value[i].key[0];

what is this value exactly? Every time i stop and start OSPL, the new id is
a random value. How is this id generated ? Is it the participant ID or
instance handle
for the reader... Can we get this same value from a normal publisher/
subscriber also?


PS: I am using OpenSplice DDS V4.3 on a Windows 2000 server machine.