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Internal libraries

The internal libraries had been refactored. 

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As the new data backend has been moved from NMIS files to the mongo database, the node information access is different. 

Sys::ndinfo  has been replaced by  Sys::nmisng_node  and  Node::nmisng_node  can be accessed directly rather than accessing  Sys::nmisng_node

• Sys::ndinfo->{system}  becomes hash returned by  Node::configuration()
  • Node::Configuration()->{roleType}  replaces  NMIS::loadLocalNodeTable()>{<a_node_name>} {role} 
  • Be warned that  Sys::ndinfo->{system}  key values often carry the strings "true" and "false" for boolean whereas  Node::configuration() returns hash key values will carry 0 and 1 for boolean.
    • Therefore one should always use Common::getBool() to evaluate key values.
  • Furthermore,  Node::configuration()  returns a clone copy each call, therefore it is advisable to set a variable if re-used:
• Sys::ndinfo->{status}  becomes  Node::get_status_model_data()
  • NMIS8  ref(Sys::ndinfo->{status})  versus NMIS9  ref(Node::get_status_model_data)
    • NMIS8  Sys::ndinfo->{status}   was a hash of hashes, whereas
    • NMIS9  Node::get_status_model_data()   is an array of hashes.
  • NMIS8  Sys::ndinfo->{status}->{source}  is not a hashkey in  Node::get_status_model_data()
    • NMIS8  Sys::ndinfo->{status}  has entries either by 'source'  or by 'index', whereas
    • NMIS9  Node::get_status_model_data()  only has entries by 'index'
  • NMIS8 <object>->{<a_node>}->{active}  should be replaced by
    • Node::configuration→{active}
• Sys::ndinfo->{sysUpTime}  is replaced by  Node::node_summary->{sysUpTimeSec}

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