Svc::ComAggregator
Aggregates buffers in the downlink chain. This is for use with systems that have fixed size frames (e.g. CCSDS TM) that needed internal aggregation.
Caution
Svc::ComAggregator does not preserve context.
Requirements
| ID | Description | Verification |
|---|---|---|
| Svc-ComAggregator-001 | ComAggregator shall accept incoming downlink data as Fw::Buffer, ComCfg::FrameContext pairs and append the buffer into the aggregate space permitting |
Unit-Test |
| Svc-ComAggregator-002 | ComAggregator shall hold the incoming buffer when there is insufficient space in the aggregate buffer. | Unit-Test |
| Svc-ComAggregator-003 | ComAggregator shall send the current aggregate buffer when the incoming buffer is held due to overflow. | Unit-Test |
| Svc-ComAggregator-004 | ComAggregator shall send the current aggregate buffer when it receives a timeout trigger if and only if the aggregate is non-empty. | Unit-Test |
| Svc-ComAggregator-005 | ComAggregator shall clear aggregation state when a SUCCESS communication status is received back. | Unit-Test |
| Svc-ComAggregator-006 | ComAggregator shall preserve the order of received buffers when forming each aggregate and across aggregate sends. | Unit-Test |
| Svc-ComAggregator-007 | ComAggregator shall inter operate with the Communication Adapter Interface comStatus protocol | Unit-Test |
Design
Svc.ComAggregator implements Svc.Framer. Additionally, it has a Svc.Sched timeout port enabling timeout to be driven via a rate group.