Space Link Extension - Service Management - CCSDS

DRAFT RECOMMENDED STANDARD FOR SPACE LINK EXTENSION SERVICE MANAGEMENT
3PP-0106
For each syntactically valid UnrecognizedMessageSetResponse received on the exception
response port, the Performer shall attempt to correlate the content of the
UnrecognizedMessageSetResponse with a return that was sent. If correlation is successful, the
Performer shall notify the Invoker by other means of the contents of any return that was contained in a
message set for which a valid UnrecognizedMessageSetResponse is received. The Invoker is
not required to further interpret or act upon any UnrecognizedMessageSetResponse that cannot
be correlated.
3.4.3 NOTIFIED OPERATION PROCEDURE PATTERN
3.4.3.1 Purpose
The notified operation procedure pattern is used for operations that result in notifications being
sent to the Recipient. A notified operation is triggered by an event that is local to the performer
of the operation. In the case of a notified operation, the performer of that operation assumes the
role of the Notifier. The notification is sent to inform the Recipient that the operation has been
performed. Because the notification is issued after the operation has been performed, the
Recipient cannot reverse the performance of the operation. However, the Recipient should
confirm to the Notifier receipt of the notification.
The notified operation procedure pattern specifies the messages exchanged between Notifier
and Recipient associated with a notified operation, the activities of the Invoker and
Performer in response to those messages, the time constraints under which those activities
are to be carried out, and the behavior of the Notifier and Recipient if the time constraints are
violated.
3.4.3.2 Procedure Pattern
The notified operation procedure pattern begins with the Notifier performing a notified
operation, generating the resultant Notification message, placing it in an
SleSmMessageSet, transmitting the SleSmMessageSet to the Recipient’s message set
port using the SLE-SM document exchange protocol defined in 3.3, and starting the
confirmation timer for the notification. The confirmation timer is set to the
confirmationTimeout value specified for all confirmations in the Service Agreement.
Upon receipt of the SleSmMessageSet containing the Notification, the Recipient
performs message set validation as specified for the Receive and Validate SLE-SM Message
Set activity subgroup of the Document Exchange Protocol activity group in 3.3. If the
SleSmMessageSet fails message set validation, the Recipient generates and transmits an
exception response containing an UnrecognizedMessageSetResponse or
InvalidMessageResponse (as appropriate to the exception) to the Notifier’s exception
response port, as specified in 3.3.
If the Notification message passes message set validation, the Recipient performs
service management validation on the Notification. The details of service management
CCSDS 910.11-R-2 Page 3-57 March 2008