Mapping QoS Requirements Universidad del Pais Vasco (UPV‐EHU) [email protected] ArtistDesign Workshop on Real‐Time System Models for Schedulability Analysis
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Mapping QoS Requirements
Universidad del Pais Vasco (UPV‐EHU)[email protected]
ArtistDesign Workshop on Real‐Time System Models for Schedulability Analysis
Mapping QoS Requirements
Outline
2
o Introduction
o Modeling Approacho Infrastructure View
o Specification View
o Open Issues: Mapping QoS Requirements
Mapping QoS Requirements
o The concept of model in iLAND
Introduction
3
hotspot
CAU
Internet
LAPU
LAPU
GW
GW
CP
MM
MM MM
WM
WM
WS
AC
AC
CP
BUS
BUS
hotspot
CAU
Internet
LAPU
LAPU
GW
GWGW
CP
MM
MM MM
WM
WM
WS
AC
AC
CP
BUSBUS
BUSBUS
S1
EPMS
S2
S3
Elderly PeopleMonitoring System
Bloodpressure
Thermometer
Fall downdetector
Receiver node
Sender node
Central System
3
Mapping QoS Requirements
SpecificationInfrastructure
Introduction
4
Service Implementations
NodesGW
Non Functional Requirements
Network Segment
Service Serv. Functional Graph of SOA
Serv. Serv.
o Identification of Domain Specific Models
Mapping QoS Requirements
Infrastructure View
5
o Meta‐model
Mapping QoS Requirements
Infrastructure View
6
o UML profileo Set of stereotypes and tagged values
o Applied to the identified UML elements
o UML diagrams and UML elements
Mapping QoS Requirements
Infrastructure View
7
o Services and Service Implementationso Diagrams:
o Class diagram
o Elementso Class
Mapping QoS Requirements
Infrastructure View
8
o Network Segments, Nodes and their resourceso Diagrams:
o Deployment diagram
o Elementso Communication path / association, Node, device (memory, processor, battery and network interface), execution environment, artefact
Mapping QoS Requirements
Specification View
9
o Service in SOA (SiS) / Macro_SiS
o Port
o Connector
o Service Oriented Application (SOA)
o Timeout
o Event
Mapping QoS Requirements
Specification View
10
o Service in SOA (SiS) / Macro_SiS
o Port
o Connector
o Service Oriented Application (SOA)
o Service in SOAo Encapsulates services defined at Infrastructure view
ServiceInput Port
Output Port
ServiceInput Port
Output Port
o Macro_SiSo Encapsulates SiS during modeling phase
o Complex graphs in a compact way
TemperatureAcq & Filter
DataFusion
DataFusion_SiSData
concentration
CO_2Acq & Filter
SmokeAcq & Filter
PressureAcq & Filter
LightAcq & Filter
WAIT
TemperatureAcq & Filter
DataFusion
DataFusion_SiSData
Fusion
DataFusion_SiSData
Fusion
DataFusion_SiSData
concentrationData
concentrationData
concentration
CO_2Acq & Filter
SmokeAcq & Filter
PressureAcq & Filter
LightAcq & Filter
WAIT
Mapping QoS Requirements
Specification View
11
o Service in SOA (SiS) / Macro_SiS
o Port
o Connector
o Service Oriented Application (SOA)
o Input Porto Reception of input parameters
o Input logic:o WAIT (Default): waits for all its predecessors
o NO‐WAIT: input parameters may come from different sources
o Output Porto Sending of output parameters
o Output logic:o AND (Default): sends to all its sucessors
o Generic: custom logic described by an activity diagram
ServiceInput Port
Output Port
ServiceInput Port
Output Port
o Timeout
o Event
Mapping QoS Requirements
Specification View
12
o Service in SOA (SiS) / Macro_SiS
o Port
o Connector
o Service Oriented Application (SOA)
o Timeout
o Event
o Collect information exchanged among SiS
o From output ports associated to output parameters
o To input ports used by input parameters
o Timeoutso Maximum duration of a situation
o Operations:o Activation
o Reset
o Get current value
Mapping QoS Requirements
Specification View
13
o Service in SOA (SiS) / Macro_SiS
o Port
o Connector
o Service Oriented Application (SOA)
o Timeout
o Event
o Reconfiguration at application level
o create/destroy applications and allocate/de‐allocate their corresponding resources at runtime
o Event triggering logic associated to output ports activity diagrams
o Types:o Create: triggers a new SOA and the original SOA remains executing
o Replace: triggers a new SOA and the original SOA is destroyed
o Switch: two SOAs execute continuously and alternately
o Destroy: triggers the stop of a running SOA
Mapping QoS Requirements
Specification View
14
o Event
ImageSource
ImageAdapter
ANDObjectTracker
VideoStorage
VirtualFence SOA2
SWITCH
ImageSource
ImageAdapter
AND
ObjectTracker
VideoStorage
ActivityLogger
VideoMonitor
EventDisplay
AND
ANDVirtualFence
SOA1SWITCH
NO-WAIT
ImageSource
ImageAdapter
AND
ObjectTracker
VideoStorage
ActivityLogger
VideoMonitor
EventDisplay
AND
ANDVirtualFence
SOA1SWITCH
ImageSource
ImageAdapter
AND
ObjectTracker
VideoStorage
ActivityLogger
VideoMonitor
EventDisplay
AND
ANDVirtualFence
SOA1SWITCH
ImageSourceImageSource
ImageAdapterImage
Adapter
AND
ObjectTrackerObjectTracker
VideoStorageVideo
Storage
ActivityLoggerActivityLogger
VideoMonitorVideo
Monitor
EventDisplayEvent
Display
AND
ANDVirtualFenceVirtualFence
SOA1SWITCH
NO-WAIT
Mapping QoS Requirements
Specification View
15
o Meta‐model
Mapping QoS Requirements
Specification View
16
o UML profileo Set of stereotypes and tagged values
o Applied to the identified UML elements
o UML diagrams and UML elements
Mapping QoS Requirements
Specification View
17
o Diagrams:o Service graph component diagram
o Output port logic activity diagram
o Elements:o SiS Component
o Input port, output port Port
o Infrastructure Service association Component realization
Mapping QoS Requirements
Specification View
18
o Elements:o Connectors (Data Flow)
o Outputs Interface Realization
o Inputs Interface Usage
Mapping QoS Requirements
Specification View
19
o Elements:o SOA Component
o Reconfiguration event Dependency
Mapping QoS Requirements 20
Application Modeling Tool
Compositor
Schedulability Analysis & Resource Manager
Open Issues: Mapping QoS Requirements
ServiceInput Port
Output Port
ServiceInput Port
Output PortSOA
•SOA QoS:
end to end latency, fps
• Reconfiguration QoS:
Maximum delay to video monitoringmaximun delay to video storage
• maximum latency of a SiS
Selection of Service Implementations(Execution Graph)
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