How to consume routes and send / receive messages

The flows between services are realized by calling (consuming) routes and sending and receiving messages

Calling a route, or receiving a message, will serve as a trigger to call other routes or send messages

Calling a route is done by using the keyword consume followed by the service name, the resource name and the route name linked by dots

consume Bank.account.accountBalance

Listening for a message is done by using the keyword receive followed by the channel name and the message name linked by dots

receive InvoicePaymentChannel.invoicePaymentMessage

Sending a message is done by using the keyword send followed by the channel name and the message name linked by dots

send PaymentChannel.paymentMessage

Triggering the consumption of routes and the sending of messages

From the definition of a route it is possible to declare the consumption of routes or the sending of messages.

The call of this route will be considered as the trigger for the call of these routes and the sending of these messages

route payment{
    url:"invoice/id:String/payment"
        request: InvoicePaymentDTO
        consume Bank.account.accountBalance
        send PaymentChannel.paymentMessage 
    }       
}

In the same way, from the declaration of the reception of a message, it is possible to declare the consumption of routes or the sending of messages.

Receiving this message will be considered as the trigger for the call of these routes and the sending of these messages

receive InvoicePaymentChannel.invoicePaymentMessage{
    send PaymentChannel.paymentMessage
}

An example 

Service cooperation generated graph from Invoice service

Sequence diagram triggered by Invoice.invoices.invoices (payment route on  ressource Invoices on service Invoice)