2023-02-15 10:35:05 +00:00
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## Sending a message
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```mermaid
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sequenceDiagram
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participant Alice PC
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participant Alice Connection 1
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participant Alice Phone
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participant Alice Connection 2
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participant Alice
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participant Room
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participant Bob
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participant Bob Connection 1
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participant Bob PC
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Alice PC->>Alice Connection 1: `PRIVMSG Room :Hello!`
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Alice Connection 1->>+Alice: PlayerCommand::SendMessage
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Alice->Alice: Check permissions
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Alice->>+Room: /send Room Hello!
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Alice-->>Alice Connection 1: fulfil promise
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Alice->>-Alice Connection 2: Updates::NewMessage
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Alice Connection 2->>Alice Phone: `:Alice PRIVMSG Room :Hello!`
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Room->>+Bob: Updates::NewMessage
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deactivate Room;
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Bob->>+Bob Connection 1: Updates::NewMessage
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deactivate Bob;
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Bob Connection 1->>-Bob PC: `:Alice PRIVMSG Room :Hello!`
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```
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## Context
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```mermaid
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C4Context
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System_Ext(AlicePC, "Alice PC", "Alice's PC")
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BiRel(AlicePC, AliceConn1, "IRC")
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System_Ext(AlicePh, "Alice Phone", "Alice's phone")
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BiRel(AlicePh, AliceConn2, "XMPP")
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Boundary(Node, "Node", "Single server process") {
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System(AliceConn1, "Alice Connection 1", "Projection nto an IRC socket")
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System(AliceConn2, "Alice Connection 2", "Projection onto an XMPP socket")
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BiRel(AliceConn1, Alice, "Cmds & updates")
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BiRel(AliceConn2, Alice, "Cmds & updates")
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Boundary(Core, "Core", "Core chat entities") {
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System(Alice, "Alice", "Player actor")
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System(Room1, "#room")
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BiRel(Alice, Room1, "")
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System(Bob, "Bob", "Player actor")
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BiRel(Bob, Room1, "")
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System(Players, "Player Registry", "")
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Rel(Players, Alice, "References")
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Rel(Players, Bob, "References")
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Rel(Players, Rooms, "")
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System(Rooms, "Room Registry", "")
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Rel(Rooms, Room1, "")
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}
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System(BobConn1, "Bob Connection 1", "Projection onto an IRC socket")
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BiRel(BobConn1, Bob, "Cmds & updates")
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}
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System_Ext(BobPC, "Bob PC", "Bob's PC")
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BiRel(BobPC, BobConn1, "IRC")
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UpdateLayoutConfig($c4ShapeInRow="3", $c4BoundaryInRow="1")
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```
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2024-01-31 13:59:34 +00:00
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## Cluster
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```mermaid
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C4Context
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System_Ext(Alice, "Alice IRC")
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System_Ext(Bob, "Bob XMPP")
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Boundary(Lavina, "Lavina", "Cluster of nodes") {
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System(Node1, "Node 1", "Single server process")
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System(Node2, "Node 2", "Single server process")
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System(Node3, "Node 3", "Single server process")
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Rel(Node1, etcd, "")
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Rel(Node2, etcd, "")
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Rel(Node3, etcd, "")
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BiRel(Node1, Node2, "")
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BiRel(Node2, Node3, "")
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BiRel(Node1, Node3, "")
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System(etcd, "etcd", "Key-value store")
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UpdateLayoutConfig($c4ShapeInRow="2", $c4BoundaryInRow="1")
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}
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Rel(Alice, Node1, "")
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Rel(Bob, Node2, "")
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```
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