C4_Container Diagram Sample - message bus.puml

@startuml "messagebus"
!include https://raw.githubusercontent.com/plantuml-stdlib/C4-PlantUML/master/C4_Container.puml
' uncomment the following line and comment the first to use locally
' !include C4_Container.puml

AddElementTag("micro service", $shape=EightSidedShape(), $bgColor="CornflowerBlue", $fontColor="white")
AddElementTag("storage", $shape=RoundedBoxShape(), $bgColor="lightSkyBlue", $fontColor="white")

SHOW_PERSON_OUTLINE()

Person(customer, Customer, "A customer")

System_Boundary(c1, "Customer Information") {
    Container(app, "Customer Application", "Javascript, Angular", "Allows customers to manage their profile")
    Container(customer_service, "Customer Service", "Java, Spring Boot", "The point of access for customer information", $tags = "micro service")
    Container(message_bus, "Message Bus", "RabbitMQ", "Transport for business events")
    Container(reporting_service, "Reporting Service", "Ruby", "Creates normalised data for reporting purposes", $tags = "micro service")
    Container(audit_service, "Audit Service", "C#/.NET", "Provides organisation-wide auditing facilities", $tags = "micro service")
    ContainerDb(customer_db, "Customer Database", "Oracle 12c", "Stores customer information", $tags = "storage")
    ContainerDb(reporting_db, "Reporting Database", "MySQL", "Stores a normalized version of all business data for ad hoc reporting purposes", $tags = "storage")
    Container(audit_store, "Audit Store", "Event Store", "Stores information about events that have happened", $tags = "storage")
}

Rel_D(customer, app, "Uses", "HTTPS")

Rel_D(app, customer_service, "Updates customer information using", "async, JSON/HTTPS")

Rel_U(customer_service, app, "Sends events to", "WebSocket")
Rel_U(customer_service, message_bus, "Sends customer update events to")
Rel(customer_service, customer_db, "Stores data in", "JDBC")

Rel(message_bus, reporting_service, "Sends customer update events to")
Rel(message_bus, audit_service, "Sends customer update events to")

Rel(reporting_service, reporting_db, "Stores data in")
Rel(audit_service, audit_store, "Stores events in")

Lay_R(reporting_service, audit_service)

SHOW_LEGEND()
@enduml