| Orchestrator { |
| n1: circle label:"Start" |
| n2: rectangle label:"Begin distributed transaction" |
| n3: rectangle label:"Coordinate saga steps" |
| n4: rectangle label:"Commit saga" |
| n5: rectangle label:"Trigger compensations" |
| n6: circle label:"End" |
| n1.handle(right) -> n2.handle(left) |
| n2.handle(bottom) -> OrderService.n7.handle(top) [label="Step 1"] |
| n3.handle(bottom) -> PaymentService.n11.handle(top) [label="Step 2"] |
| n4.handle(right) -> n6.handle(left) |
| n5.handle(bottom) -> PaymentService.n15.handle(top) [label="Rollback"] |
| } |
| OrderService { |
| n7: rectangle label:"Create order record" |
| n8: diamond label:"Order created?" |
| n9: rectangle label:"Reserve inventory" |
| n10: rectangle label:"Cancel order" |
| n7.handle(right) -> n8.handle(left) |
| n8.handle(right) -> n9.handle(left) [label="Yes"] |
| n8.handle(bottom) -> n10.handle(top) [label="No"] |
| n9.handle(top) -> Orchestrator.n3.handle(bottom) [label="Success"] |
| n10.handle(top) -> Orchestrator.n5.handle(bottom) [label="Failed"] |
| } |
| PaymentService { |
| n11: rectangle label:"Process payment" |
| n12: diamond label:"Payment successful?" |
| n13: rectangle label:"Confirm transaction" |
| n14: rectangle label:"Report payment failure" |
| n15: rectangle label:"Refund payment" |
| n16: rectangle label:"Release inventory" |
| n11.handle(right) -> n12.handle(left) |
| n12.handle(right) -> n13.handle(left) [label="Yes"] |
| n12.handle(bottom) -> n14.handle(top) [label="No"] |
| n13.handle(bottom) -> ShippingService.n17.handle(top) [label="Step 3"] |
| n14.handle(top) -> Orchestrator.n5.handle(bottom) [label="Compensate"] |
| n15.handle(right) -> n16.handle(left) |
| n16.handle(top) -> OrderService.n10.handle(bottom) [label="Undo order"] |
| } |
| ShippingService { |
| n17: rectangle label:"Schedule shipment" |
| n18: diamond label:"Shipment scheduled?" |
| n19: rectangle label:"Generate tracking number" |
| n20: rectangle label:"Report shipping failure" |
| n17.handle(right) -> n18.handle(left) |
| n18.handle(right) -> n19.handle(left) [label="Yes"] |
| n18.handle(bottom) -> n20.handle(top) [label="No"] |
| n19.handle(top) -> Orchestrator.n4.handle(bottom) [label="Complete"] |
| n20.handle(top) -> Orchestrator.n5.handle(bottom) [label="Compensate"] |
| } |
|
|
