AccessControl

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AccessControl

Version: 1.1
ID: urn:jaus:jss:core:AccessControl

Inherits From:

urn:jaus:jss:core:Events v1.1

urn:jaus:jss:core:Transport v1.0

Description:
The Access Control service offers a basic interface for acquiring preemptable exclusive control to one or more related services that utilize this function. Once the exclusive control is established, the related services shall only execute commands originating from the controlling component. The authority code parameter of this service is used for preemption and is to be set equal to that of its controlling client. This service always grants control to the highest authority client that is requesting exclusive control. Commands from all other clients are ignored unless from a client with higher authority.

This service maintains two values, a default value and a current value of a field called authority code. The default value is the value that the service is pre-configured with. Access is provided to clients based on the value of their authority code in comparison to the current value of this service.

State transitions between the Available and NotAvailable nested states are behaviors that are deferred to service definitions that derive from this service.

Internal Event Set
ID	Name
`8D01h`	AccessControlTimeout

Message Set
Message ID	Name
`000Fh`	ConfirmControl
`2001h`	QueryAuthority
`200Dh`	QueryControl
`2003h`	QueryTimeout
`0010h`	RejectControl
`000Eh`	ReleaseControl
`4001h`	ReportAuthority
`400Dh`	ReportControl
`4003h`	ReportTimeout
`000Dh`	RequestControl
`0001h`	SetAuthority

State Machine Diagram

State Transitions
Label	Transition	Trigger	Conditional	Actions
C	AcceptControlTransition	RequestControl	`!isDefaultAuthorityGreater`	resetTimer , sendConfirmControlAccepted , setAuthority , storeAddress
D	ControlledLoopback	RequestControl	`isCurrentAuthorityLess && !isControllingClient`	resetTimer , sendConfirmControlAccepted , sendRejectControlToController , setAuthority , storeAddress
		RequestControl	`!isCurrentAuthorityLess && !isControllingClient`	sendConfirmControlInsufficientAuthority
		RequestControl	`!isDefaultAuthorityGreater && isControllingClient`	resetTimer , sendConfirmControlAccepted , setAuthority
		SetAuthority	`isControllingClient && isAuthorityValid`	setAuthority
A	DefaultStateLoop	QueryAuthority		sendReportAuthority
		QueryTimeout		sendReportTimeout
		QueryControl		sendReportControl
		ConfirmControl		updateControlledList
		RejectControl		updateControlledList
B	NotControlledLoopback	RequestControl	`isDefaultAuthorityGreater`	sendConfirmControlInsufficientAuthority
B	NotControlledLoopback	ReleaseControl		sendRejectControlReleased
E	ReleaseControlTransition	ReleaseControl	`isControllingClient`	sendRejectControlReleased
		RequestControl	`isDefaultAuthorityGreater && isControllingClient`	sendRejectControlToController
		AccessControlTimeout		sendRejectControlReleased

Actions
Action Name	Type	Description
init	Entry Action	Set the service’s current authority value to the default authority value
resetTimer		Reset the timer
sendConfirmControlAccepted		Send a confirm control message with the specified response code to requesting client
sendConfirmControlInsufficientAuthority		Send a confirm control message with the specified response code to requesting client
sendRejectControlReleased
sendRejectControlToController
sendReportAuthority	Send Action	Send a Report Authority message to querying client reporting the current authority value of this service Output Message: ReportAuthority
sendReportControl	Send Action	Send a Report Control message with the specified control value Output Message: ReportControl
sendReportTimeout	Send Action	Send a Report Timeout message specifying the timeout period of this service Output Message: ReportTimeout
setAuthority		Set the current authority value of this service to the specified authority
storeAddress
updateControlledList		Modifies list of controlled components based on confirm or reject messages

Copyright © SAE International. Reprinted with Permission.
Portions Copyright © OpenJAUS LLC.
The information above is generated from the JAUS Services modelled in the OpenJAUS SDK using OpenJAUS Service Studio. It is provided as a resource to assist JAUS developers and is not a substitute for the JAUS Standards Documents which may be obtained from the SAE International.

Generated on 07/17/2019 from as5710-core.ojss

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