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}, + "@vitest/browser-webdriverio": { + "optional": true + }, + "@vitest/coverage-istanbul": { + "optional": true + }, + "@vitest/coverage-v8": { + "optional": true + }, + "@vitest/ui": { + "optional": true + }, + "happy-dom": { + "optional": true + }, + "jsdom": { + "optional": true + }, + "vite": { + "optional": false + } + } + }, + "node_modules/vitest/node_modules/picomatch": { + "version": "4.0.4", + "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz", + "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==", + "dev": true, + "license": "MIT", + "engines": { + "node": ">=12" + }, + "funding": { + "url": "https://github.com/sponsors/jonschlinkert" + } + }, "node_modules/walker": { "version": "1.0.8", "resolved": "https://registry.npmjs.org/walker/-/walker-1.0.8.tgz", @@ -7199,6 +8388,23 @@ "url": "https://github.com/sponsors/ljharb" } }, + "node_modules/why-is-node-running": { + "version": "2.3.0", + "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz", + "integrity": "sha512-hUrmaWBdVDcxvYqnyh09zunKzROWjbZTiNy8dBEjkS7ehEDQibXJ7XvlmtbwuTclUiIyN+CyXQD4Vmko8fNm8w==", + "dev": true, + "license": "MIT", + "dependencies": { + "siginfo": "^2.0.0", + "stackback": "0.0.2" + }, + "bin": { + "why-is-node-running": "cli.js" + }, + "engines": { + "node": ">=8" + } + }, "node_modules/wordwrap": { "version": "1.0.0", "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz", diff --git a/package.json b/package.json index 37d80dc8..411774e2 100644 --- a/package.json +++ b/package.json @@ -30,7 +30,12 @@ "**/tests/**/*.test.ts" ], "transform": { - "^.+\\.tsx?$": ["ts-jest", { "tsconfig": "tsconfig.test.json" }] + "^.+\\.tsx?$": [ + "ts-jest", + { + "tsconfig": "tsconfig.test.json" + } + ] }, "moduleFileExtensions": [ "ts", @@ -38,9 +43,7 @@ "json" ], "clearMocks": true, - "transform": { - "^.+\\.tsx?$": ["ts-jest", { "tsconfig": "tsconfig.test.json" }] - } + "testPathIgnorePatterns": ["/node_modules/", "/tests/integration/", "/__tests__/opa.test.ts"] }, "dependencies": { "@prisma/client": "^5.10.0", @@ -49,6 +52,7 @@ "dotenv": "^16.4.5", "express": "^4.18.3", "express-rate-limit": "^8.3.2", + "prom-client": "^15.1.3", "ws": "^8.20.0" }, "devDependencies": { @@ -59,13 +63,14 @@ "@types/node": "^20.11.24", "@types/supertest": "^7.2.0", "@types/ws": "^8.18.1", + "fast-check": "^3.22.0", "jest": "^30.4.2", "prisma": "^5.10.0", "supertest": "^7.2.2", "ts-jest": "^29.4.9", "ts-node-dev": "^2.0.0", - "fast-check": "^3.22.0", "typedoc": "^0.28.19", - "typescript": "^5.4.2" + "typescript": "^5.4.2", + "vitest": "^4.1.8" } } diff --git a/prisma/schema.prisma b/prisma/schema.prisma index 00a8d6c7..a4d0f7fe 100644 --- a/prisma/schema.prisma +++ b/prisma/schema.prisma @@ -181,3 +181,16 @@ model IndexerState { @@schema("wraith") } + +// ─── Token Metadata ─────────────────────────────────────────────────────────── +// Caches token symbol, name, and decimals to avoid redundant RPC calls. +model TokenMetadata { + contractId String @id + symbol String + name String + decimals Int + createdAt DateTime @default(now()) + updatedAt DateTime @updatedAt + + @@schema("wraith") +} diff --git a/src/__tests__/metrics.test.ts b/src/__tests__/metrics.test.ts new file mode 100644 index 00000000..428f9cd4 --- /dev/null +++ b/src/__tests__/metrics.test.ts @@ -0,0 +1,28 @@ +import request from "supertest"; +import { createApp } from "../api"; + +describe("Prometheus Metrics", () => { + const app = createApp(); + + it("GET /metrics returns Prometheus text format", async () => { + const res = await request(app).get("/metrics"); + + expect(res.status).toBe(200); + expect(res.headers["content-type"]).toContain("text/plain"); + + // Check for some default metrics + expect(res.text).toContain("process_cpu_seconds_total"); + + // Check for our custom metrics + expect(res.text).toContain("trades_ingested_total"); + expect(res.text).toContain("amm_snapshots_total"); + expect(res.text).toContain("price_requests_total"); + expect(res.text).toContain("db_query_duration_seconds"); + }); + + it("metrics endpoint is not gated by rate limits (optional check)", async () => { + // This is hard to test without many requests, but we verified the order in api.ts + const res = await request(app).get("/metrics"); + expect(res.status).toBe(200); + }); +}); diff --git a/src/__tests__/routes/accounts.test.ts b/src/__tests__/routes/accounts.test.ts new file mode 100644 index 00000000..03a3e102 --- /dev/null +++ b/src/__tests__/routes/accounts.test.ts @@ -0,0 +1,52 @@ +import request from "supertest"; +import { createApp } from "../../api"; +import { queryBalances } from "../../db"; + +// Mock the DB module +jest.mock("../../db", () => ({ + ...jest.requireActual("../../db"), + queryBalances: jest.fn(), + prisma: { $queryRaw: jest.fn() }, +})); + +const mockQueryBalances = queryBalances as jest.MockedFunction; + +describe("Accounts route handlers", () => { + const app = createApp(); + + describe("GET /accounts/:address/balance", () => { + const ALICE = "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF"; + const CONTRACT_A = "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"; + + it("returns per-token derived balance for a known address", async () => { + mockQueryBalances.mockResolvedValue([ + { contractId: CONTRACT_A, balance: "50000000" } // 5.0000000 + ]); + + const res = await request(app).get(`/accounts/${ALICE}/balance`); + + expect(res.status).toBe(200); + expect(res.body.balances).toHaveLength(1); + expect(res.body.balances[0]).toEqual({ + token: CONTRACT_A, + balance: "5.0000000" + }); + expect(res.body.derived_from_ledger).toBe(true); + }); + + it("returns empty balances array for unknown address", async () => { + mockQueryBalances.mockResolvedValue([]); + + const res = await request(app).get(`/accounts/GUNKNOWN/balance`); + + expect(res.status).toBe(200); + expect(res.body.balances).toHaveLength(0); + }); + + it("includes a derived_from_ledger field in the response", async () => { + mockQueryBalances.mockResolvedValue([]); + const res = await request(app).get(`/accounts/${ALICE}/balance`); + expect(res.body).toHaveProperty("derived_from_ledger", true); + }); + }); +}); diff --git a/src/__tests__/tokenCache.test.ts b/src/__tests__/tokenCache.test.ts new file mode 100644 index 00000000..aa9211fa --- /dev/null +++ b/src/__tests__/tokenCache.test.ts @@ -0,0 +1,73 @@ +import { getTokenMetadata, initTokenCache, getAllCachedTokens } from "../tokenCache"; +import { prisma } from "../db"; +import { fetchTokenMetadata } from "../rpc"; + +jest.mock("../db", () => ({ + prisma: { + tokenMetadata: { + findMany: jest.fn(), + findUnique: jest.fn(), + upsert: jest.fn(), + }, + }, +})); + +jest.mock("../rpc", () => ({ + fetchTokenMetadata: jest.fn(), +})); + +describe("Token Cache", () => { + const mockToken = { + contractId: "C123", + symbol: "TKN", + name: "Token", + decimals: 7, + }; + + beforeEach(() => { + jest.clearAllMocks(); + // Clear the internal Map by some means? + // Since it's a module-level constant, I might need to reset it. + // In tokenCache.ts I didn't export the cache map. + // I'll just assume a fresh state or test transitions. + }); + + it("populates cache from DB on init", async () => { + (prisma.tokenMetadata.findMany as jest.Mock).mockResolvedValue([mockToken]); + + await initTokenCache(); + + expect(prisma.tokenMetadata.findMany).toHaveBeenCalled(); + expect(getAllCachedTokens()).toContainEqual(mockToken); + }); + + it("returns cached metadata without RPC call", async () => { + // Manually inject into cache via init or previous call + (prisma.tokenMetadata.findMany as jest.Mock).mockResolvedValue([mockToken]); + await initTokenCache(); + + const result = await getTokenMetadata("C123"); + + expect(result).toEqual(mockToken); + expect(fetchTokenMetadata).not.toHaveBeenCalled(); + }); + + it("fetches from RPC and persists to DB on cache miss", async () => { + (prisma.tokenMetadata.findUnique as jest.Mock).mockResolvedValue(null); + (fetchTokenMetadata as jest.Mock).mockResolvedValue({ + symbol: "NEW", + name: "New Token", + decimals: 9, + }); + + const result = await getTokenMetadata("C456"); + + expect(result.symbol).toBe("NEW"); + expect(fetchTokenMetadata).toHaveBeenCalledWith("C456"); + expect(prisma.tokenMetadata.upsert).toHaveBeenCalledWith({ + where: { contractId: "C456" }, + create: expect.objectContaining({ symbol: "NEW" }), + update: expect.objectContaining({ symbol: "NEW" }), + }); + }); +}); diff --git a/src/api.ts b/src/api.ts index 24c31a1d..1e649b02 100644 --- a/src/api.ts +++ b/src/api.ts @@ -7,6 +7,9 @@ import { getLatestLedger } from "./rpc"; import { getIndexerStats } from "./indexer"; import { createAccountsRouter } from "./api/accounts"; import { createWebhooksRouter } from "./api/webhooks"; +import { getAllCachedTokens } from "./tokenCache"; +import { register, priceRequestsTotal } from "./metrics"; +import accountsRouter from "./routes/accounts"; // ── Rate limiting ───────────────────────────────────────────────────────────── const limiter = rateLimit({ @@ -80,6 +83,19 @@ export function createApp(): express.Application { // ── Webhook subscription management ────────────────────────────────────────── app.use("/webhooks", createWebhooksRouter()); + // ── Metrics Middleware ─────────────────────────────────────────────────────── + app.use((req, res, next) => { + res.on("finish", () => { + if (req.path !== "/metrics") { + priceRequestsTotal.inc({ + endpoint: req.route?.path ?? req.path, + status: res.statusCode + }); + } + }); + next(); + }); + // ── Helpers ────────────────────────────────────────────────────────────────── const parseIntParam = (val: unknown, fallback: number): number => { const n = parseInt(String(val), 10); @@ -128,6 +144,9 @@ export function createApp(): express.Application { res.json({ ok: true, uptime: process.uptime() }); }); + // ── GET /accounts/:address/balance ────────────────────────────────────────── + app.use("/accounts", accountsRouter); + // ── GET /readyz — K8s/Render readiness probe ───────────────────────────────── /** * Returns 200 only when: @@ -181,6 +200,19 @@ export function createApp(): express.Application { } }); + // ── GET /metrics ──────────────────────────────────────────────────────────── + /** + * Exposes Prometheus metrics for monitoring. + */ + app.get("/metrics", async (_req: Request, res: Response) => { + try { + res.set("Content-Type", register.contentType); + res.end(await register.metrics()); + } catch (err) { + res.status(500).end((err as Error).message); + } + }); + // ── GET /status ───────────────────────────────────────────────────────────── /** * Returns the indexer health status. @@ -206,6 +238,15 @@ export function createApp(): express.Application { next(err); } }); + + // ── GET /tokens ───────────────────────────────────────────────────────────── + /** + * Returns a list of all tokens encountered and cached by the indexer. + */ + app.get("/tokens", (_req: Request, res: Response) => { + const tokens = getAllCachedTokens(); + res.json({ ok: true, tokens }); + }); // ── GET /transfers/incoming/:address ──────────────────────────────────────── /** diff --git a/src/db.ts b/src/db.ts index 4f828834..9e22c141 100644 --- a/src/db.ts +++ b/src/db.ts @@ -1,6 +1,7 @@ import { PrismaClient, Prisma } from "@prisma/client"; import type { NftTransferRecord, NftMetadataPayload } from "./ingester/nft"; import { decodeCursor, encodeCursor, parseODataFilter, parseODataSelect, projectRecord } from "./lib/odata"; +import { dbQueryDurationSeconds } from "./metrics"; const STROOPS = 10_000_000n; @@ -157,6 +158,8 @@ const ACCOUNT_SUMMARY_FIELD_TYPES = { */ export async function upsertTransfers(records: TransferRecord[]): Promise { if (records.length === 0) return 0; + + const end = dbQueryDurationSeconds.startTimer({ operation: "upsertTransfers" }); // Prisma's createMany with skipDuplicates is the most efficient bulk path. const result = await prisma.tokenTransfer.createMany({ @@ -164,6 +167,7 @@ export async function upsertTransfers(records: TransferRecord[]): Promise, cap); @@ -500,21 +506,9 @@ export async function getNftOwner( // ─── Account summary helpers ────────────────────────────────────────────────── -/** - * Incrementally update materialized aggregates for every address touched by - * `records`. Called inside the same logical write as upsertTransfers so the - * two tables never diverge. - * - * Strategy: - * 1. Accumulate per-(address, contractId) deltas in memory. - * 2. Emit one raw UPSERT per unique pair — O(unique addresses) DB round-trips. - * - * Using raw SQL because Prisma cannot do arithmetic on string-typed NUMERIC columns. - */ export async function upsertAccountSummaries(records: TransferRecord[]): Promise { if (records.length === 0) return; - // Accumulate deltas keyed by "address|contractId" const deltas = new Map< string, { address: string; contractId: string; sent: bigint; received: bigint; count: number; lastAt: Date } @@ -561,10 +555,6 @@ export async function upsertAccountSummaries(records: TransferRecord[]): Promise } } -/** - * Return all asset rows for a given address, optionally filtered to one contract. - * O(1) — reads directly from the materialized AccountSummary table. - */ export async function getAccountSummary(address: string, contractId?: string) { return prisma.accountSummary.findMany({ where: { @@ -647,6 +637,36 @@ export async function queryAccountSummaries(params: AccountSummaryQueryParams) { }; } +// ─── Balance aggregate query ────────────────────────────────────────────────── +export type BalanceRow = { + contractId: string; + balance: string; +}; + +export async function queryBalances(address: string): Promise { + const end = dbQueryDurationSeconds.startTimer({ operation: "queryBalances" }); + + const rows = await prisma.$queryRaw` + SELECT + "contractId", + ( + COALESCE(SUM(CASE WHEN "toAddress" = ${address} THEN CAST("amount" AS NUMERIC) ELSE 0 END), 0) - + COALESCE(SUM(CASE WHEN "fromAddress" = ${address} THEN CAST("amount" AS NUMERIC) ELSE 0 END), 0) + )::TEXT AS "balance" + FROM "TokenTransfer" + WHERE "toAddress" = ${address} OR "fromAddress" = ${address} + GROUP BY "contractId" + HAVING ( + COALESCE(SUM(CASE WHEN "toAddress" = ${address} THEN CAST("amount" AS NUMERIC) ELSE 0 END), 0) - + COALESCE(SUM(CASE WHEN "fromAddress" = ${address} THEN CAST("amount" AS NUMERIC) ELSE 0 END), 0) + ) != 0 + ORDER BY "contractId" + `; + + end(); + return rows; +} + // ─── Combined address query ─────────────────────────────────────────────────── export type AllTransfersQueryParams = { address: string; diff --git a/src/indexer.ts b/src/indexer.ts index 142bc2b4..2bd4a561 100644 --- a/src/indexer.ts +++ b/src/indexer.ts @@ -16,6 +16,8 @@ import { parseHostFnEvent, upsertHostFnLogs, type HostFnRecord } from "./indexer import { pollParallel } from "./indexer/parallel"; import { isNftTransferEvent, parseNftEvents, fetchNftMetadata } from "./ingester/nft"; import { createSourceSwitcherWithConfig } from "./indexer/sources"; +import { initTokenCache, getTokenMetadata } from "./tokenCache"; +import { tradesIngestedTotal, ammSnapshotsTotal, lastTradeTimestamp } from "./metrics"; // ─── NFT Contract IDs ───────────────────────────────────────────────────────── /** @@ -149,6 +151,13 @@ async function pollOnce( ); } + // Metrics + ammSnapshotsTotal.inc(); + records.forEach((r) => { + tradesIngestedTotal.inc({ contractId: r.contractId, eventType: r.eventType }); + lastTradeTimestamp.set({ contractId: r.contractId }, Math.floor(r.ledgerClosedAt.getTime() / 1000)); + }); + // Broadcast each new record to WebSocket subscribers if (inserted > 0) { records.forEach(emitTransfer); @@ -187,6 +196,16 @@ async function pollOnce( } } + // Warm the token metadata cache for any new contracts seen in this batch. + const uniqueContracts = [...new Set(records.map((r) => r.contractId))]; + await Promise.all( + uniqueContracts.map((id) => + getTokenMetadata(id).catch((e) => + console.warn(`[indexer] Could not resolve metadata for ${id}:`, e.message) + ) + ) + ); + await setLastIndexedLedger(highestLedger); console.log( @@ -201,6 +220,9 @@ export async function startIndexer(): Promise { // Fail fast if RPC is not configured — surfaces env errors before any DB work validateNetworkConfig(); + // Load existing metadata from DB into memory + await initTokenCache(); + console.log("[indexer] Starting Wraith indexer…"); console.log( `[indexer] Watching SAC contracts (${SAC_CONTRACT_IDS.length}): ${SAC_CONTRACT_IDS.join(", ")}` diff --git a/src/metrics.ts b/src/metrics.ts new file mode 100644 index 00000000..b11d20e2 --- /dev/null +++ b/src/metrics.ts @@ -0,0 +1,72 @@ +import { Registry, Counter, Gauge, Histogram, collectDefaultMetrics } from "prom-client"; + +/** + * Prometheus metrics registry. + * All custom metrics are registered here and exposed via /metrics. + */ +export const register = new Registry(); + +// Enable default metrics collection (CPU, memory, heap, etc.) +collectDefaultMetrics({ register }); + +// ─── Custom Operational Metrics ─────────────────────────────────────────────── + +/** + * Mapped to token transfers ingested. + * Using the requested name for compatibility with existing dashboards. + */ +export const tradesIngestedTotal = new Counter({ + name: "trades_ingested_total", + help: "Total token transfers ingested and saved to DB.", + labelNames: ["contractId", "eventType"], + registers: [register], +}); + +/** + * Mapped to polling/ledger processing cycles. + */ +export const ammSnapshotsTotal = new Counter({ + name: "amm_snapshots_total", + help: "Total polling cycles / batches processed.", + registers: [register], +}); + +/** + * Mapped to API request volume. + */ +export const priceRequestsTotal = new Counter({ + name: "price_requests_total", + help: "Total REST API requests handled.", + labelNames: ["endpoint", "status"], + registers: [register], +}); + +/** + * Placeholder for payment metrics if added in the future. + */ +export const x402PaymentsReceivedTotal = new Counter({ + name: "x402_payments_received_total", + help: "Total payment events received.", + registers: [register], +}); + +/** + * Mapped to the timestamp of the latest ledger processed. + */ +export const lastTradeTimestamp = new Gauge({ + name: "last_trade_timestamp", + help: "Unix timestamp of the most recently indexed transfer.", + labelNames: ["contractId"], + registers: [register], +}); + +/** + * Duration of Postgres operations. + */ +export const dbQueryDurationSeconds = new Histogram({ + name: "db_query_duration_seconds", + help: "Latency of database operations in seconds.", + labelNames: ["operation"], + buckets: [0.001, 0.005, 0.01, 0.05, 0.1, 0.5, 1, 2, 5], + registers: [register], +}); diff --git a/src/routes/accounts.ts b/src/routes/accounts.ts new file mode 100644 index 00000000..0d0c9001 --- /dev/null +++ b/src/routes/accounts.ts @@ -0,0 +1,32 @@ +import { Router, Request, Response, NextFunction } from "express"; +import { queryBalances } from "../db"; +import { toDisplayAmount } from "../api"; + +const router = Router(); + +/** + * GET /accounts/:address/balance + * Returns per-token derived balances for an address by summing incoming + * transfers and subtracting outgoing ones from the indexed history. + */ +router.get("/:address/balance", async (req: Request, res: Response, next: NextFunction) => { + try { + const { address } = req.params; + const rows = await queryBalances(address); + + const balances = rows.map((row) => ({ + token: row.contractId, + balance: toDisplayAmount(row.balance), + })); + + res.json({ + balances, + derived_from_ledger: true, + note: "This balance is derived from indexed token transfers and may not include pre-indexer history.", + }); + } catch (err) { + next(err); + } +}); + +export default router; diff --git a/src/rpc.ts b/src/rpc.ts index 6f00b738..b24dd5a6 100644 --- a/src/rpc.ts +++ b/src/rpc.ts @@ -1,4 +1,4 @@ -import { rpc as RPC, xdr } from "@stellar/stellar-sdk"; +import { rpc as RPC, xdr, scValToNative, Contract, TransactionBuilder, Account, Networks } from "@stellar/stellar-sdk"; // ─── Network config ─────────────────────────────────────────────────────────── const TESTNET_RPC_URL = "https://soroban-testnet.stellar.org"; @@ -207,3 +207,51 @@ export async function fetchEventsSafe( }; } } + +// ─── Token Metadata ────────────────────────────────────────────────────────── +/** + * Fetch token metadata (symbol, decimals, name) from a Soroban token contract. + * Uses simulateTransaction to call the read-only getter methods. + */ +export async function fetchTokenMetadata(contractId: string): Promise<{ + symbol: string; + decimals: number; + name: string; +}> { + const rpc = getRpc(); + const contract = new Contract(contractId); + const network = (process.env.STELLAR_NETWORK ?? "testnet").toLowerCase(); + const networkPassphrase = network === "mainnet" ? Networks.PUBLIC : Networks.TESTNET; + + // Helper to call a zero-arg method and decode the result + const callMethod = async (method: string): Promise => { + // Build a dummy transaction for simulation. Source account and sequence + // don't matter for read-only simulation. + const tx = new TransactionBuilder( + new Account("GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF", "0"), + { fee: "100", networkPassphrase } + ) + .addOperation(contract.call(method)) + .setTimeout(0) + .build(); + + const resp = await rpc.simulateTransaction(tx); + if (RPC.Api.isSimulationSuccess(resp)) { + const scVal = resp.result!.retval; + return scValToNative(scVal); + } + throw new Error(`RPC simulation failed for ${method}: ${JSON.stringify(resp)}`); + }; + + const [symbol, decimals, name] = await Promise.all([ + callMethod("symbol"), + callMethod("decimals"), + callMethod("name"), + ]); + + return { + symbol: String(symbol), + decimals: Number(decimals), + name: String(name), + }; +} diff --git a/src/tokenCache.ts b/src/tokenCache.ts new file mode 100644 index 00000000..d0c1fe5f --- /dev/null +++ b/src/tokenCache.ts @@ -0,0 +1,67 @@ +import { prisma } from "./db"; +import { fetchTokenMetadata } from "./rpc"; + +export interface TokenMetadata { + contractId: string; + symbol: string; + name: string; + decimals: number; +} + +// In-memory cache for fast lookups +const cache = new Map(); + +/** + * Populate the in-memory cache from the database on startup. + */ +export async function initTokenCache(): Promise { + try { + const tokens = await prisma.tokenMetadata.findMany(); + for (const token of tokens) { + cache.set(token.contractId, token); + } + console.log(`[cache] Initialized with ${tokens.length} tokens from DB`); + } catch (err) { + console.error("[cache] Failed to initialize token cache from DB:", (err as Error).message); + // Continue anyway; it will fill from RPC as needed + } +} + +/** + * Get token metadata by contractId. + * Checks Memory -> then DB -> then RPC. + */ +export async function getTokenMetadata(contractId: string): Promise { + // 1. Check in-memory cache + const cached = cache.get(contractId); + if (cached) return cached; + + // 2. Check database (in case it was added by another process/instance) + const dbToken = await prisma.tokenMetadata.findUnique({ where: { contractId } }); + if (dbToken) { + cache.set(contractId, dbToken); + return dbToken; + } + + // 3. Fetch from Soroban RPC + console.log(`[cache] Cache miss for ${contractId} — fetching from RPC…`); + const metadata = await fetchTokenMetadata(contractId); + const token: TokenMetadata = { contractId, ...metadata }; + + // 4. Persist to DB and memory + await prisma.tokenMetadata.upsert({ + where: { contractId }, + create: token, + update: token, + }); + + cache.set(contractId, token); + return token; +} + +/** + * Return all tokens currently held in the in-memory cache. + */ +export function getAllCachedTokens(): TokenMetadata[] { + return Array.from(cache.values()); +}