| AlertSystem { |
| n1: circle label:"Start" |
| n2: rectangle label:"Detect anomaly in metrics" |
| n3: rectangle label:"Trigger rollback alert" |
| n4: rectangle label:"Notify on-call engineer" |
| n5: circle label:"End" |
| n1.handle(right) -> n2.handle(left) |
| n2.handle(right) -> n3.handle(left) |
| n3.handle(bottom) -> Orchestrator.n6.handle(top) [label="Initiate rollback"] |
| n4.handle(right) -> n5.handle(left) |
| } |
| Orchestrator { |
| n6: rectangle label:"Identify current version" |
| n7: rectangle label:"Fetch previous stable version" |
| n8: diamond label:"Previous version available?" |
| n9: rectangle label:"Prepare rollback manifest" |
| n10: rectangle label:"Halt manual rollback" |
| n6.handle(right) -> n7.handle(left) |
| n7.handle(right) -> n8.handle(left) |
| n8.handle(right) -> n9.handle(left) [label="Yes"] |
| n8.handle(bottom) -> n10.handle(top) [label="No"] |
| n9.handle(bottom) -> Kubernetes.n11.handle(top) [label="Apply"] |
| n10.handle(top) -> AlertSystem.n4.handle(bottom) [label="Manual needed"] |
| } |
| Kubernetes { |
| n11: rectangle label:"Scale down new pods" |
| n12: rectangle label:"Deploy previous image" |
| n13: rectangle label:"Wait for pods ready" |
| n14: diamond label:"All pods healthy?" |
| n15: rectangle label:"Update service selector" |
| n16: rectangle label:"Mark rollback failed" |
| n11.handle(right) -> n12.handle(left) |
| n12.handle(right) -> n13.handle(left) |
| n13.handle(right) -> n14.handle(left) |
| n14.handle(right) -> n15.handle(left) [label="Yes"] |
| n14.handle(bottom) -> n16.handle(top) [label="No"] |
| n15.handle(bottom) -> Verification.n17.handle(top) [label="Traffic shifted"] |
| n16.handle(top) -> AlertSystem.n4.handle(bottom) [label="Failed"] |
| } |
| Verification { |
| n17: rectangle label:"Run smoke tests" |
| n18: diamond label:"Tests passing?" |
| n19: rectangle label:"Update deployment status" |
| n20: rectangle label:"Cleanup old resources" |
| n21: rectangle label:"Escalate to team lead" |
| n17.handle(right) -> n18.handle(left) |
| n18.handle(right) -> n19.handle(left) [label="Yes"] |
| n18.handle(bottom) -> n21.handle(top) [label="No"] |
| n19.handle(right) -> n20.handle(left) |
| n20.handle(top) -> AlertSystem.n4.handle(bottom) [label="Rollback complete"] |
| n21.handle(top) -> AlertSystem.n4.handle(bottom) [label="Needs attention"] |
| } |
|
|
