Module: partitionedStorageUnit

Executive Summary

The PartitionedStorageUnit class is a model of storage unit functionality that aims to split up the storage unit into “partitions” or buffers, just as a flight storage system would, for each data type (instrument 1, instrument 2, telemetry, etc). This module considers:

1. Integrated net input data of the attached dataNodes at a partitioned level.

2. The sum of the data inside of the partitioned storage unit.

3. The storage unit’s maximum storage capacity as defined by the storageCapacity attribute.

Integration of the net input data is performed with a simple Euler method for each partition.

\(Data_{stored} = (baudRate) (t_{current} - t_{previous})\)

Module Assumptions and Limitations

See Module: dataStorageUnitBase class for inherited assumption and limitations.

Message Connection Descriptions

This module only uses the input and output messages of the Module: dataStorageUnitBase base class.

User Guide

To set up this module users must create a PartitionedStorageUnit instance:

storageUnit = partitionedStorageUnit.PartitionedStorageUnit()
storageUnit.ModelTag = "storageUnit"

In addition to the variables that must be set for the Module: dataStorageUnitBase base class, this module requires the storageCapacity attribute to be specified. The total data stored in the storageUnit will be limited to not exceed this capacity value:

storageUnit.storageCapacity = 1E5 # Given in bits

The next step is to attach one or more DataNodeUsageMsgPayload instances to it using the addDataNodeToModel() method:

storageUnit.addDataNodeToModel(dataMsg)

Then, the names of the partitions need to be added to the storageUnit using:

storageUnit.addPartition("partitionName")

For more information on how to set up and use this module, see the simple data system example scenarioDataDemo.

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class PartitionedStorageUnit : public DataStorageUnitBase

#include <partitionedStorageUnit.h>

partioned storage unit class

Public Functions

PartitionedStorageUnit()

The constructor creates a partitionedStorageUnit instance with zero stored data

Returns

void;

~PartitionedStorageUnit()

Destructor.

Returns

void

void addPartition(std::string dataName)

Adds a partition to the storageUnit

Parameters

dataName –

Returns

void

Private Functions

void customReset(uint64_t CurrentClock) override

Custom reset function.

Parameters

currentClock –

Returns

void