DSP Simulator

Module for providing the Simulated DSP capability for PST.

class ska_pst_lmc.dsp.dsp_simulator.PstDspSimulator(num_subbands: Optional[int] = None, disk_capacity: Optional[int] = None, available_disk_space: Optional[int] = None, subband_data_record_rates: Optional[List[float]] = None)[source]

Simulator for the DSP process of the PST.LMC sub-system.

This is used to generate random data and simulate what for the DSP subsystem. This simulator is used for all the subbands. For the LMC state model most methods are no-op operations but when a scan is in process the get_data() method will randomly update the monitoring data.

For DSP.DSK functionality the following properties can be set: * Total disk size * Availabe disk size * Subband write rates * Subband bytes written

To be able to simulate situation where the disk is near full, or is full, the method simulate_disk_capacity() should be called to override the current value.

Initialise the DSP simulator.

Parameters

  • num_subbands (int) – number of subbands, if None a random number is used.

  • disk_capacity (int) – the max size of the size to simulate, default is is determined from shutil

  • available_disk_space (int) – initial available space on disk to simulate, default is determined from shutil

  • subband_data_record_rates (List[float]) – the write rates per subband. Default is a random array.

property disk_capacity: int

Get simulated disk capacity.

property available_disk_space: int

Get simulated available bytes left of disk.

configure_scan(configuration: dict) → None[source]

Simulate configuring a scan.

Only the “num_subbands” parameter is used by this simulator.

Parameters

configuration (dict) – the configuration to be configured

deconfigure_scan() → None[source]

Simulate deconfiguring of a scan.

start_scan(args: dict) → None[source]

Simulate start scanning.

Param

the scan arguments.

stop_scan() → None[source]

Simulate stop scanning.

abort() → None[source]

Tell the component to abort whatever it was doing.

get_data() → DspDiskMonitorData[source]

Get current DSP data.

Updates the current simulated data and returns the latest data.

Returns

current simulated DSP data.

Return type

DspDiskMonitorData

get_subband_data() → Dict[int, DspDiskSubbandMonitorData][source]

Get simulated subband data.