Page History

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1. SS registration with polyglot.
   
   • Add 1 exchange/queue for SS registration with polyglot.
     Set its TTL to say 5 secs, so msgs are discarded in such time.
   • SS publishes msgs to this queue, regarding aliveness, and conversion capabilities.

2. In "checkin", SS posts uploads the content of a converted file – instead of sending only the URL – and Polyglot saves it, instead of creating a "<file>.url" file.

    

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1. POL now adds SSes in discoveryAMQ(), removes (non-responsive) SSes in heartbeat(). Change to: POL listens to a new queue, adds SSes and updates timestamps in discovery thread, and removes SSes with expired timestamps in heartbeat thread – with NO querying of SSes.
2. SS adds new implementation In SS: add code to publish conversion capability msgs in a new queue in RabbitMQ for POLs to listen to for SS registration and heartbeat.
3. In SS: add code to upload converted files, in polyglot: add code to save them;
4. In PolyglotStewardAMQ: change the code that creates "<file1.url>".

With this design, a SS can keep its REST endpoints, but POL does not query them. So it does not matter whether multiple SS containers run on the same VM or different VMs.

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