43 lines
1.2 KiB
Markdown
43 lines
1.2 KiB
Markdown
# Example Golang CQRS application
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This application is using [Watermill CQRS](http://watermill.io/docs/cqrs) component.
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Detailed documentation for CQRS can be found in Watermill's docs: [http://watermill.io/docs/cqrs#usage](http://watermill.io/docs/cqrs).
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```mermaid
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sequenceDiagram
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participant M as Main
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participant CB as CommandBus
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participant BRH as BookRoomHandler
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participant EB as EventBus
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participant OBRB as OrderBeerOnRoomBooked
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participant OBH as OrderBeerHandler
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participant BFR as BookingsFinancialReport
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Note over M,BFR: Commands use AMQP queue, Events use AMQP pub/sub
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M->>CB: Send(BookRoom)<br/>topic: commands.BookRoom
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CB->>BRH: Handle(BookRoom)
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BRH->>EB: Publish(RoomBooked)<br/>topic: events.RoomBooked
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par Process RoomBooked Event
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EB->>OBRB: Handle(RoomBooked)
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OBRB->>CB: Send(OrderBeer)<br/>topic: commands.OrderBeer
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CB->>OBH: Handle(OrderBeer)
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OBH->>EB: Publish(BeerOrdered)<br/>topic: events.BeerOrdered
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EB->>BFR: Handle(RoomBooked)
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Note over BFR: Updates financial report
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end
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```
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## Running
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```bash
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docker-compose up
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```
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