doc/images/upd_env_read.svg

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@startuml upd_env_read

hide footbox
autonumber

box "System"
        participant "caller" as caller

        participant "reader" as reader

        database "update environment \n location 1" as updenv1
        database "update environment \n location 2" as updenv2
end box


mainframe update env read


== Read ==

caller -> reader :  request read

reader -> updenv1 : read raw data
reader -> reader : verify ID, version and checksum

reader -> updenv2 : read raw data
reader -> reader : verify ID, version and checksum

alt only one valid

reader -> reader : select valid data

else two valid

reader -> reader : select data with highest env_revision

else none valid

reader -> caller : report error

end

reader -> caller :  return selected data

@enduml

PlantUML version 1.2020.02(Sun Mar 01 11:22:07 CET 2020)
(GPL source distribution)
Java Runtime: OpenJDK Runtime Environment
JVM: OpenJDK 64-Bit Server VM
Java Version: 11.0.22+7-post-Ubuntu-0ubuntu222.04.1
Operating System: Linux
Default Encoding: UTF-8
Language: de
Country: DE
--></g></svg>