Scan

  1. CSP Leaf Node provides API for Scan workflow.

  2. The CSP Leaf Node accepts the command if :-

    1. Operational state of the CSP Leaf node is ON/OFF/INIT/STANDBY/ALARM

    2. CSP Subarray is responsive.

  3. The CSP Leaf Node rejects the command if :-

    1. Operational state of CSP Leaf node is FAULT/UNKNOWN/DISABLE .

    2. CSP Subarray is not responsive.

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

    1. CSP Subarray is in ‘observation state’ READY .

    2. CSP Subarray node is available .

  5. The command execution involves below key operations :-

    1. The Input JSON is validated and if malformed , and Command is ‘Failed’ with exception message

    2. Checks are done to check if JSON contains “interface” and “scan_id” keys. Absence of any required key or an empty resources list leads to a failed Command failure with exception message.This will be reported on long running command result.

    3. The command is then invoked on the CSP Subarray.

      • If CSP Subarray raises exception , command failure is reported as ‘RESULT_CODE - FAILED’ on Long Running Command Result attribute of the CSP leaf node.

      • If CSP Subarray accept command , the TMC CSP leaf node will wait for command completion.

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

    1. Command is successful when the CSP Subarray sends ‘RESULT_CODE - OK’ on Long Running Command Result attribute of the CSP Subarray. This is reported as ‘RESULT_CODE - OK’ on Long Running Command Result attribute of the TMC CSP 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 TMC CSP Subarray leaf node.

      • The CSP Subarray reports ‘RESULT_CODE - FAILED’ on its Long Running Command Result attribute

      • The command times out if CSP SubarrayNode does not receive ‘RESULT_CODE - OK’ from CSP Subarray within the timeout period specified by CommandTimeOutDefault property specified in helm chart of the CSP Leaf Node .