tree a064083d08c0c9d38e6fe944090ca17447849981
parent c37d056c7b9f53d567a1f1189374def8532b06d3
author Jungho Ahn <jhahn@google.com> 1453920667 -0800
committer Jungho Ahn <jhahn@google.com> 1453920667 -0800

discovery: introduce session to discovery

  Currently we have only one discovery instance per runtime and all
  discovery clients share the same instance. Although this makes sense
  and required, it may cause inconvenience in some cases like when a
  user wants to excludes services that are advertised by the same
  discovery client.

  This change introduces 'session' to discovery so that we can
  distinguish discovery clients including

    o simplify discovery.T interface
      - remove unnecessary/not-used interfaces.
    o make discovery.T as a sessioned discovery and change v23 API for
      getting discovery instance.
    o change scan() to filter out advertisements from the same discovery.T
      instance.
    o remove discovery service
      - the current interface is not sufficient. E.g., there is no way
        to remove obsolete advertisement.
      - discovery as a service doesn't make sense for now.
      - if needed, we can add it again with more complete
        api/implementation later.

MultiPart: 4/4
Change-Id: I3df1dab7dd2b9d42e82a20247df44baf92f822cd