docs/design/diagrams/data_flow_sequence.svg

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@startuml
skinparamlocked backgroundColor fefefe
participant "Cloud Digital Twin"
box Freyja
participant "Emitter"
participant "Signal Store"
participant "Cartographer"
participant "Digital Twin Adapter"
participant "Data Adapter Selector"
participant "Data Adapter"
end box
participant "Ibeji"
participant "Provider"

autonumber

== Entity Registration ==

"Cartographer"->"Digital Twin Adapter": Request DTDL for mapped entites
"Digital Twin Adapter"->"Ibeji": Send find_by_id request(s)
"Ibeji"->"Digital Twin Adapter": Respond with entity data
"Digital Twin Adapter"->"Cartographer": Respond with entity data
"Cartographer"->"Data Adapter Selector": Create or update data adapter with entity data
"Data Adapter Selector"->"Data Adapter Selector": Select correct Data Adapter
"Data Adapter Selector"->"Data Adapter": Register entity
alt Entity supports subscribe
"Data Adapter"->"Provider": Subscribe
"Data Adapter"<-"Provider": Subscribe Response
end
"Data Adapter"->"Data Adapter Selector": Register entity response
"Data Adapter Selector"->"Cartographer": Register entity response
"Cartographer"->"Signal Store": Track Signals

== Data Collection and Emission ==

loop
alt Entity doesn't support subscribe
"Emitter"->"Data Adapter Selector": Request signal value
"Data Adapter Selector"->"Data Adapter Selector": Select correct Data Adapter
"Data Adapter Selector"->"Data Adapter": Request signal value
"Data Adapter"->"Provider": Request signal value
"Data Adapter"<-"Provider": Signal value response
"Data Adapter Selector"<-"Data Adapter": Signal value response
"Emitter"<-"Data Adapter Selector": Signal value response
end
alt Entity supports subscribe
loop Provider publishes data asynchronously
"Provider"->"Data Adapter": Publish data
"Data Adapter"->"Signal Store": Update store
end
"Emitter"->"Signal Store": Request signal value
"Emitter"<-"Signal Store": Signal value response
end
"Emitter"->"Cloud Digital Twin": Emit signal data
end

@enduml

PlantUML version 1.2020.02(Sun Mar 01 10:22:07 UTC 2020)
(GPL source distribution)
Java Runtime: OpenJDK Runtime Environment
JVM: OpenJDK 64-Bit Server VM
Java Version: 11.0.22+7
Operating System: Linux
Default Encoding: UTF-8
Language: en
Country: null
--></g></svg>