feat(www): add Stellar testnet metrics counter with Soroban RPC#61
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feat(www): add Stellar testnet metrics counter with Soroban RPC#61Hollujay wants to merge 1 commit into
Hollujay wants to merge 1 commit into
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pull live stealth payment counts (24h, 7d, all-time) from announcer contract events on Stellar Soroban testnet. use getLatestLedger RPC method instead of error-message parsing, unified getEvents pagination for all three windows, filter events by topic length, and graceful empty state. includes client-side in-memory cache with 5-minute TTL and inline cache strategy documentation.
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Closes #40.
Summary
Adds a live-ish metrics counter section to the landing page that displays real stealth payment activity on the Stellar Soroban testnet. Pulls data directly from the announcer contract via Soroban RPC, showing counts for the last 24 hours, last 7 days, and all time.
Changes
New files
src/components/StellarMetrics.tsx— Counter component with three stat cards, data fetching, caching, and graceful empty/loading/error states.Modified files
src/App.tsx— Imports and renders<StellarMetrics />between the Chains and Compare sections.package.json— Adds@wraith-protocol/sdkand@stellar/stellar-sdkas dependencies.Details
Data source
Uses the Soroban JSON-RPC
getEventsmethod on the Wraith announcer contract deployed on Stellar testnet. The latest ledger is obtained via thegetLatestLedgerRPC method, and ledger ranges are calculated assuming ~1 ledger per 5 seconds (17,280/day).Time windows
latestLedger - 17,280→ latestlatestLedger - 120,960→ latestEvent filtering
Events are validated as announcements by checking
event.topic.length >= 3(matching the SDK'sparseAnnouncementEventguard). This ensures only valid stealth announcement events are counted, not unrelated contract events.Caching
Mapwith a 5-minute TTL.States handled
Number formatting: raw values below 1,000,
X.Xkbelow 1M,X.XMabove.Visual design
Matches the existing pattern from
Features.tsx—bg-surface-containercards withborder-outline-variant,font-monooverline labels,font-headingcount values, and scroll-triggereddata-revealentrance animations. Section header reads "Live Metrics" / "Stellar testnet activity."Verification
npm run buildpasses (TypeScript + Vite + OG images)npm testpasses (6/6 tests, including a11y audit)npm run format:checkpasses