IIOP fail over and load balancing

• One-Pager is now available
• Basic model: bring over the features from GFv2
• Failover
  • Required ORB code is already in place (unchanged from GFv2)
  • Still need to enable ServerGroupManager in the orb-iiop bundles (in GlassFishORBManager)
    • Need to revise ASORBUtilities to connect to GMS (class loading replaced with resource injection)
• Load balancing
  • Mostly not handled in ORB
    • Two exceptions:
      • per-request load balancing (PRLB), which I added for Argela
      • hardware loadbalancing support, which I added for NTT
  • Normal per InitialContext LB is entirely in naming
• Testing
  • ORB is well-covered for unit tests of failover components (RFM, ClientGroupManager, ServerGroupManager)
  • GF-level testing has been handled entirely by SQE in the past
  • Need developer tests for FOLB at GF level
  • This needs a test framework for starting and stopping multiple GF instances, which may be on different hosts.

CSIv2 problems

• CSIv2 and IIOP FOLB have never worked together
• We should fix this
• Fix will probably align with moving parts of CSIv2 (mainly tagged component and service context related code) into the ORB
  • This will simplify the current architecture, which has 2 code paths, one for CSIv2, and one for non-CSiv2
  • Also provides a foundation for moving to Grizzly SSL, if we manage to get the ORB moved to Grizzly 2.0 someday.