From 2146fbab9af9c318a51c14310c2fcebda791b6d7 Mon Sep 17 00:00:00 2001
From: Lennart Heinrich <lennart.heinrich@edu.fhdw.de>
Date: Thu, 11 Dec 2025 20:09:44 +0100
Subject: [PATCH] split messaging sequence diagram

---
 plantuml/messaging-sequence-left.puml  | 74 ++++++++++++++++++++++++++
 plantuml/messaging-sequence-right.puml | 38 +++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 plantuml/messaging-sequence-left.puml
 create mode 100644 plantuml/messaging-sequence-right.puml

diff --git a/plantuml/messaging-sequence-left.puml b/plantuml/messaging-sequence-left.puml
new file mode 100644
index 0000000..3a3d533
--- /dev/null
+++ b/plantuml/messaging-sequence-left.puml
@@ -0,0 +1,74 @@
+@startuml Messaging Sequenzdiagramm Links
+
+group "Backend: Request produzieren und warten"
+
+Endpoint -> RequestReply: request(cmdW)
+
+RequestReply -> AtomicReference : <<create>>
+RequestReply <-- AtomicReference : responseRef
+
+RequestReply -> RequestReply : responses.put(\nrequestId,\nresponseRef)
+
+RequestReply -> Kafka: produce(cmdW)
+RequestReply <-- Kafka : Ack
+
+RequestReply -> AtomicReference : wait()
+
+end
+
+note over Kafka : asynchron
+
+group "Persistence: Request konsumieren und enqueuen"
+
+Quarkus -> Kafka: poll()
+Quarkus <-- Kafka: cmdW
+
+Quarkus -> CommandObserver: process(cmdW)
+
+CommandObserver -> Transaction: get(txId)
+CommandObserver <-- Transaction: tx
+
+CommandObserver -> Transaction: queue(tx, cmdW)
+CommandObserver <-- Transaction
+
+Quarkus <-- CommandObserver
+Kafka <-- Quarkus : Ack
+
+end
+
+note over Transaction : asynchron
+
+... Persistence: Request verarbeiten und Response produzieren\n(siehe weiteres Sequenzdiagramm) ...
+
+note over Kafka : asynchron
+
+group "Backend: Response konsumieren und benachrichtigen"
+
+RequestReply -> Kafka : poll()
+RequestReply <-- Kafka : respW
+
+RequestReply -> RequestReply : responses.get(requestId)
+
+RequestReply -> AtomicReference : set(respW)
+RequestReply <-- AtomicReference
+
+RequestReply -> AtomicReference : notifyAll()
+RequestReply <-- AtomicReference
+
+end
+
+note over RequestReply : asynchron
+
+group "Backend: Response zu Request zurückgeben" [synchron nach 1. Block, siehe oben]
+
+RequestReply <-- AtomicReference : wegen wait (siehe oben)
+
+RequestReply -> AtomicReference : get()
+RequestReply <-- AtomicReference : respW
+
+Endpoint <-- RequestReply : respW
+
+end
+
+@enduml
+
diff --git a/plantuml/messaging-sequence-right.puml b/plantuml/messaging-sequence-right.puml
new file mode 100644
index 0000000..1d5decd
--- /dev/null
+++ b/plantuml/messaging-sequence-right.puml
@@ -0,0 +1,38 @@
+@startuml Messaging Sequenzdiagramm Rechts
+
+participant Kafka
+
+group "Persistence: Request verarbeiten und Response produzieren"
+
+Transaction -> CommandWrapper : process(cmdW)
+CommandWrapper -> Command : <<reflection>>\ndeserialize(cmdW)
+CommandWrapper <-- Command : cmd
+
+CommandWrapper -> Command : process(cmd)
+
+Command -> CDI : select(Class)
+Command <-- CDI : Processor
+
+Command -> Processor : process(cmd)
+note over Processor : Verarbeitung\ndes Commands
+Command <-- Processor : resp
+
+CommandWrapper <-- Command : resp
+Transaction <-- CommandWrapper : resp
+
+Transaction -> CommandResponse : serialize(resp).copyIds(cmdW)
+Transaction <-- CommandResponse : respW
+
+Transaction -> Interceptor : intercept(respW)
+note over Interceptor : (asynchron;\nDetails nicht\ndargestellt)
+Transaction <-- Interceptor
+
+Transaction -> Transaction : commit()
+
+Transaction -> Kafka : produce(respW)
+Transaction <-- Kafka : Ack
+
+end
+
+@enduml
+