Recommendation for Space Data System Practices

1. 
   SLE Application
   

Exported Interfaces

Interface	Clients	A	N
ISLE_ServiceInform	SE	M
ISLE_Reporter	SE and PX	M
ISLE_TimerHandler	SE and PX	C	1
ISLE_EventMonitor	SE and PX	C	1
ISLE_Trace	SE and PX	O	2
ISLE_TimeSource	SU	O

NOTES

1. 
   The interface is required only in combination with ISLE_Sequential. It is passed to the API Proxy via the API Service Element, if the interface between these two components is also sequential.
   
2. 
   The interface is passed to the API Proxy via the API Service Element.
   

81. 
    Required Interfaces
    

Interface	Interface reference obtained by	S	A	N
ISLE_ProxyAdmin	call to the bootstrap creator function _CreateProxy().	PX	M	1
ISLE_SEAdmin	call to the bootstrap creator function _CreateServiceElement().	SE	M	1
ISLE_Locator	call to ISLE_SEAdmin::QueryInterface().	SE	C	2 3
ISLE_OperationFactory	call to the bootstrap creator function _CreateOperationFactory().	SO	M	1 4
ISLE_UtilFactory	call to the bootstrap creator function _CreateUtilFactory().	SU	M	1
ISLE_SIFactory	call to ISLE_SEAdmin::QueryInterface().	SE	M	3
ISLE_SIAdmin	call to ISLE_SIFactory::CreateServiceInstance().	SE	M	5
I_SIAdmin	call to ISLE_SIAdmin::QueryInterface().	SE	C	6
I_SIUpdate	call to ISLE_SIAdmin::QueryInterface().	SE	C	6
ISLE_SIOpFactory	call to ISLE_SIAdmin::QueryInterface().	SE	M	6
ISLE_ServiceInitiate	call to ISLE_SIAdmin::QueryInterface().	SE	M	6
ISLE_Concurrent	call to ISLE_SEAdmin::QueryInterface().	SE	C	3
ISLE_Sequential	call to ISLE_SEAdmin::QueryInterface().	SE	C	3
ISLE_TimeoutProcessor	input argument to ISLE_TimerHandler::StartTimer().	SE	C	7
ISLE_EventProcessor	input argument to ISLE_EventMonitor::AddEvent().	SE	C	7
ISLE_TraceControl	a) call to ISLE_SEAdmin::QueryInterface(); b) call to ISLE_SIAdmin::QueryInterface().	SE	O	3 8
interfaces of operation objects	a) input argument of one of the methods in ISLE_ServiceInitiate; b) call to ISLE_SIOpFactory::CreateOperation().	SE SO	M	9
interfaces of utility objects	a) passed by methods of other interfaces; b) call to ISLE_UtilFactory.		M	10

NOTES

1. 
   The application could also request the creator function to return a different interface (e.g., IUnknown) and then use QueryInterface() to retrieve this interface.
   
2. 
   The application needs this interface only for configuration of the API Proxy; it does not use any of its methods.
   
3. 
   QueryInterface() can also be called on any other interface exported by the same component object.
   
4. 
   The application needs this interface for configuration of the API Proxy and the API Service Element. Applications should use the interface ISLE_SIOpFactory to create operation objects.
   
5. 
   The application could also request the method CreateServiceInstance() to return any other interface of a service instance and obtain ISLE_SIAdmin by calling QueryInterface() on that interface.
   
6. 
   The interface could also be obtained by a call to QueryInterface() on any other interface of the service instance or by the call to ISLE_SIOpFactory (instead of requesting ISLE_SIAdmin).
   
7. 
   The interface is only required in combination with ISLE_Sequential.
   
8. 
   Method a) is used to control traces for the complete API; method b) provides an interface to control tracing for an individual service instance.
   
9. 
   An application obtains operation objects from the service instance in the API Service Element; they are actually implemented by the component SLE Operations.
   
10. 
    Utility objects can be passed to the service element by various methods; they are implemented by the component SLE Utilities.
    

1. 
   

   Index to Definitions

   
   
   (Informative)
   

This annex provides an index to the terminology defined in the references.

Term	Reference
(data) type	reference [15]
(data) value	reference [15]
abstract binding	reference [3]
abstract object	reference [3]
abstract port	reference [3]
abstract service	reference [3]
Abstract Syntax Notation One (ASN.1)	reference [15]
active (state)	4
association	references [4], [5], [6], [7], and [8]
bound (state)	4
client	1.6.1.4.5
communications service	references [4], [5], [6], [7], and [8]
complete (online delivery mode)	references [4], [5] and [6]
component	1.6.1.4.2
confirmed operation	references [4], [5], [6], [7], and [8]
flow control	2.3.3.4.2.2 and 2.3.3.4.2.3
initiator	reference [19]
interface	1.6.1.4.6
invocation	references [4], [5], [6], [7], and [8]
invoker	reference [3]
latency limit	references [4], [5] and [6]
object identifier	reference [15]
offline delivery mode	reference [3]
offline frame buffer	references [4], [5] and [6]
online delivery mode	reference [3]
online frame buffer	references [4], [5] and [6]
operation	reference [3]
parameter	references [4], [5], [6], [7], and [8]
performance	references [4], [5], [6], [7], and [8]
performer	reference [3]
physical channel	reference [3]
port identifier	references [4], [5], [6], [7], and [8]
provider-initiated	references [4], [5] and [6]
relative distinguished name (RDN)	reference [17]
release timer	references [4], [5] and [6]
responder	reference [19]
return (of an operation)	references [4], [5], [6], [7], and [8]
return data	reference [3]
service agreement	reference [3]
service instance provision period	references [4], [5], [6], [7], and [8]
service provider (provider)	reference [3]
service user (user)	reference [3]
SLE Complex	reference [3]
SLE Complex Management	reference [3]
SLE data channel	reference [3]
SLE functional group (SLE-FG)	reference [3]
SLE protocol data unit (SLE-PDU)	reference [3]
SLE service data unit (SLE-SDU)	reference [3]
SLE service package	reference [3]
SLE System	reference [3]
SLE transfer service instance	reference [3]
SLE transfer service production	reference [3]
SLE transfer service provision	reference [3]
SLE Utilization Management	reference [3]
space link	reference [3]
space link data channel	reference [3]
space link data unit (SL-DU)	reference [3]
space link session	reference [3]
telemetry frame	references [4], [5] and [6]
timely (online delivery mode)	references [4], [5] and [6]
transfer buffer	references [4], [5] and [6]
transfer frame	reference [3]
unbound (state)	4
unconfirmed operation	references [4], [5], [6], [7], and [8]
user-initiated	references [4], [5] and [6]

2. 
   

   Acronyms and Abbreviations

   (Informative)
   

This annex expands the acronyms used throughout this Recommended Practice.

AIF Application Interface

API Application Program Interface

CCSDS Consultative Committee for Space Data Systems

CIF Client Interface

CLTU Command Link Transmission Unit

COM Component Object Model

FSP Forward Space Packet

GUID Globally Unique Identifier

ID Identifier

IEC International Electrotechnical Commission

IID Interface Identifier

ISO International Organization for Standardization

MIF Management Interface

NIF Network Interface

OCL Object Constraint Language

OMG Object Management Group

PDU Protocol Data Unit

PIF Proxy Interface

RAF Return All Frames

RCF Return Channel Frames

ROCF Return Operational Control Field

SHA Secure Hash Algorithm

SI Service Instance

SII Service Instance Identifier

SLE Space Link Extension

SRV Service

UML Unified Modeling Language

UTC Coordinated Universal Time

3. 
   

   Informative References

   (Informative)
   

[J22] Organization and Processes for the Consultative Committee for Space Data Systems. Issue 4. CCSDS Record (Yellow Book), CCSDS A02.1-Y-4. Washington, D.C.: CCSDS, April 2014.

[J23] Space Communication Cross Support—Service Management—Service Specification. Issue 1. Recommendation for Space Data System Standards (Blue Book), CCSDS 910.11-B-1. Washington, D.C.: CCSDS, August 2009.

[J24] Space Link Extension—Application Program Interface for Transfer Services—Summary of Concept and Rationale. Issue 1. Report Concerning Space Data System Standards (Green Book), CCSDS 914.1-G-1. Washington, D.C.: CCSDS, January 2006.

[J25] Space Link Extension—Application Program Interface for Transfer Services—Application Programmer's Guide. Issue 2. Report Concerning Space Data System Standards (Green Book), CCSDS 914.2-G-2. Washington, D.C.: CCSDS, October 2008.

[J26] The COM/DCOM Reference. COM/DCOM Product Documentation, AX-01. San Francisco: The Open Group, 1999.

[J27] Unified Modeling Language (UML). Version 2.4.1. Needham, Massachusetts: Object Management Group, August 2011.

[J28] Martin Fowler. UML Distilled: A Brief Guide to the Standard Object Modeling Language. 3rd ed. The Addison-Wesley Object Technology Series. Reading, Massachusetts: Addison-Wesley, 2003.

[J29] Grady Booch, Ivar Jacobson, and James Rumbaugh. The Unified Modeling Language User Guide. 2nd ed. The Addison-Wesley Object Technology Series. Reading, Massachusetts: Addison-Wesley, 2005.

[J30] Space Link Extension—Return All Frames Service Specification. Issue 2-S. Recommendation for Space Data System Standards (Historical), CCSDS 911.1-B-2-S. Washington, D.C.: CCSDS, (December 2004) January 2010.

[J31] Space Link Extension—Return Channel Frames Service Specification. Issue 1-S. Recommendation for Space Data System Standards (Historical), CCSDS 911.2-B-1-S. Washington, D.C.: CCSDS, (December 2004) January 2010.

[J32] Space Link Extension—Return Operational Control Fields Service Specification. Issue 1-S. Recommendation for Space Data System Standards (Historical), CCSDS 911.5-B-1-S. Washington, D.C.: CCSDS, (December 2004) January 2010.

[J33] Space Link Extension—Forward CLTU Service Specification. Issue 2-S. Recommendation for Space Data System Standards (Historical), CCSDS 912.1-B-2-S. Washington, D.C.: CCSDS, (December 2004) July 2010.

[J34] Space Link Extension—Forward Space Packet Service Specification. Issue 1-S. Recommendation for Space Data System Standards (Historical), CCSDS 912.3-B-1-S. Washington, D.C.: CCSDS, (December 2004) July 2010.

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