25 lines
No EOL
809 B
Markdown
25 lines
No EOL
809 B
Markdown
```mermaid
|
|
sequenceDiagram
|
|
participant User
|
|
participant PaymentGateway
|
|
participant Bank
|
|
|
|
%% Normal flow
|
|
User ->> PaymentGateway: Request Payment
|
|
PaymentGateway ->> Bank: Process Payment
|
|
Bank -->> PaymentGateway: Payment Approved
|
|
PaymentGateway -->> User: Payment Confirmation
|
|
|
|
%% External failure branch
|
|
User ->> PaymentGateway: Request Payment
|
|
PaymentGateway ->> Bank: Process Payment
|
|
Bank -->> PaymentGateway: Payment Declined
|
|
PaymentGateway -->> User: Payment Declined Message
|
|
|
|
%% DB failure branch
|
|
User ->> PaymentGateway: Request Payment
|
|
PaymentGateway ->> Bank: Process Payment
|
|
Bank -->> PaymentGateway: DB Error
|
|
PaymentGateway -->> User: Payment Failed Due to Error
|
|
Note over PaymentGateway: Rollback transaction if needed
|
|
``` |