Interesting concept for self-assembling nodes

self-assembling-architecture.js

infrastructure
  .discover('solr')
  .enter(function(instance) { // when a new instance has announced itself or come online again
    // instance.port
    // instance.core
    // instance.ip
    // instance.ttl
  })
  .exit(function(instance) {  // when an instance has left
    // when an instance has left we can now unregister it
  });
  
// announce yourself to the infrastructure so
// that others can tie into you
infrastructure.announce('solr', { 
  port: 8080,       // port we are running the service on
  core: '0002-01',  // unique core name
  ip: '192.168.0.1',  // the exposed address of the solr instance
  ttl: 1000         // the time-to-live (after this we should check if we exist)
});
// announce will continually announce at the TTL time, listen is responsible for detecting an outage
// and triggering the enter and exit functon

// announce we are leaving
infrastructure.leave('solr', {
  port: 8080,       // port we are running the service on
  core: '0002-01',  // unique core name
  ip: '192.168.0.1',  // the exposed address of the solr instance
  ttl: 1000         // the time-to-live (after this we should check if we exist)
});