Restart

  1. Subarry Node provides API for Restart workflow.

  2. The Sub-array node accepts the command if :-

    1. Admin mode reported by each of the system - CSP,SDP subarray are in ONLINE/ENGINEERING/RESERVED

    2. Operational state of the Sub-array node is ON/OFF/INIT/STANDBY/ALARM

  3. The Sub-array Node rejects the command if-

    1. Admin mode reported by each of the system - CSP,SDP Sub-array are in OFFLINE or NOT FITTED.

    2. Operational state of the sub-array node is FAULT/UNKNOWN/DISABLE .

  4. The following state requirements are applied for the command execution :-

    1. TMC Subarray is in ‘observation state’ ABORTED or FAULT .

    2. isSubarrayAvailable is checked to ensure the subsystems (CSP, SDP and MCCS) are available

  5. The command execution involves below key operations :-

    1. Active scan timers or command timeouts are cancelled or paused to prevent follow-on automatic actions

    2. Assigned resource record , scan durations ,scheduling block Id etc are cleared.

    3. The command is then invoked on the relevant TMC CSP, SDP, MCCS leaf Nodes after perfroming few key checks as below :

      • available check is done for the subsystem

      • Subsystem’s current observation state is inspected; if already EMPTY, ABORTING, the abort call for that subsystem is skipped with a log note.

      • Command is then sent to relevant TMC CSP, SDP, MCCS leaf Nodes

      • If leaf node rejects/ faces failure in sending restart command , command failure is reported as ‘RESULT_CODE - FAILED’ on Long Running Command Result attribute of the TMC Subarry node.Command will not be sent to remaining subsystems in this case if multiple subsystems are involved .

      • If all leaf node accept command , the TMC Subarry node will wait for command completion.

  6. The Sub-array node monitors the progress of command via the Sub-array node ObsState transitions and the long running command results.

    1. Command is successful when the TMC Subarray Node transitions to EMPTY ObsState. This is reported as ‘RESULT_CODE - OK’ on Long Running Command Result attribute of the Subarray node.

    2. Command failure is reported in any of the below cases as ‘RESULT_CODE - FAILED’ on Long Running Command Result attribute of the Subarray node.

      • The CSP Leaf node/SDP Leaf node/MCCS Leaf node reports ‘RESULT_CODE - FAILED’ on its Long Running Command Result attribute

      • The command times out if TMC SubarrayNode does not transition to EMPTY within the timeout period specified by CommandTimeOutDefault property specified in helm chart of the TMC Subarray node .