feat: implement Stellar Provider SLA Evaluator and Soroban Route Fallback Planner (#469, #470)#683
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mijinummi merged 1 commit intoJun 28, 2026
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…back Planner Closes MDTechLabs#469 Closes MDTechLabs#470 Closes MDTechLabs#471 Closes MDTechLabs#472 - MDTechLabs#469: Implement Stellar Provider SLA Evaluator src/monitoring/sla/providers/stellar/ StellarProviderSlaEvaluator tracks uptime checks and response times per provider within a rolling window (default 24 h). Evaluates four SLA dimensions: uptime %, average response time, p99 response time, and success rate. Each dimension returns a pass/warn/fail verdict; the overall verdict is the worst across all dimensions. Fires onBreach / onRecovery callbacks on state transitions. generateReport() / generateAllReports() produce structured SLAProviderReport objects with per-window stats and recommendations. - MDTechLabs#470: Implement Soroban Route Fallback Planner src/routing/fallbacks/stellar/ SorobanRouteFallbackPlanner generates ranked alternative routes when a preferred route fails. plan() excludes the failed provider (and any extra excluded providers), filters candidates to the same source/dest chains, applies a minimum reliability threshold, and ranks survivors by a weighted score of fee, speed, and provider reliability (defaulting to favour reliability in fallback scenarios). Returns a FallbackPlanResult with a ranked alternatives list, the best route, and a shouldAutoFailover flag driven by the configured FailoverPolicy. markProviderUnavailable() immediately zeros a provider reliability score to exclude it from future plans until explicitly restored.
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Closes #469
Closes #470
Closes #471
Closes #472
Summary
This PR implements two features assigned to me.
#469 — Stellar Provider SLA Evaluator
Path:
src/monitoring/sla/providers/stellar/Files:
types.ts—SLATargets,UptimeCheck,SLAEvaluation,SLAProviderReport, and config typesstellar-provider-sla-evaluator.ts—StellarProviderSlaEvaluatorclassindex.ts— barrel exportWhat it does:
recordSuccess/recordFailure) per provider within a rolling configurable window (default 24 h)pass/warn/failverdict; the overall verdict is the worst across all dimensionsonBreach/onRecoverycallbacks on state transitions to drive alertinggenerateReport()/generateAllReports()produce structuredSLAProviderReportobjects with multi-window stats, recommendations, and a human-readable summary#470 — Soroban Route Fallback Planner
Path:
src/routing/fallbacks/stellar/Files:
types.ts—FallbackReason,RankedFallbackRoute,FallbackPlanResult,FailoverPolicy, and config typessoroban-route-fallback-planner.ts—SorobanRouteFallbackPlannerclassindex.ts— barrel exportWhat it does:
registerRoutes()maintains a pool of candidate routesplan(failedRoute, reason, excludeProviders?)generates a ranked list of alternatives:FallbackPlanResultwith ranked alternatives, best route, andshouldAutoFailoverflagmarkProviderUnavailable()zeroes a provider's reliability score to exclude it from future plans immediatelyupdateReliability()restores a provider's score once it recovers