feat(stellar): abstract Horizon client into HorizonService module - #97
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Wilfred007 merged 1 commit intoMar 7, 2026
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This PR abstracts the Stellar Horizon client into a proper service module following the issue requirements.
Changes made:
[NEW] backend/src/stellar/horizonService.ts — Core HorizonService class that handles:
Lazy-cached Horizon.Server instance (created once, reused across calls)
Testnet/Mainnet switching via STELLAR_NETWORK env var (delegates to existing network.ts)
Exponential-backoff retry logic (withRetry()) for transient network errors. Permanent 4xx errors are NOT retried.
Startup health check (checkOnStartup()) which fetches fee stats, logs latency and ledger sequence, and optionally throws if unreachable so the app fails fast
A shared horizonService singleton for convenience alongside a class export for custom-configured instances
[MODIFY] backend/src/stellar/client.ts — Refactored to delegate getStellarServer(), getActiveNetworkConfig(), and resetClient() to the new service. Zero breaking changes for existing callers.
[MODIFY] backend/src/stellar/index.ts — Added HorizonService, horizonService, and HealthCheckResult to the barrel exports.
Closes #5