feat: add erc4626 wrapper strategy

Author: dglowinski

.env.template

@@ -1,7 +1,6 @@
 # Environment Configuration
 NODE_ENV="development" # Options: 'development', 'production'
 PORT="3001"
-HOST="localhost"       # Hostname for the server
 
 # CORS Settings
 CORS_ORIGIN="*" # Allowed CORS origin, adjust as necessary

src/common/middleware/rateLimiter.ts

@@ -1,14 +1,12 @@
 import type { Request } from "express"
 import { rateLimit } from "express-rate-limit"
 
-import { env } from "@/common/utils/envConfig"
-
 const rateLimiter = rateLimit({
   legacyHeaders: true,
-  limit: env.COMMON_RATE_LIMIT_MAX_REQUESTS,
+  limit: Number(process.env.COMMON_RATE_LIMIT_MAX_REQUESTS || 20),
   message: "Too many requests, please try again later.",
   standardHeaders: true,
-  windowMs: env.COMMON_RATE_LIMIT_WINDOW_MS,
+  windowMs: Number(process.env.COMMON_RATE_LIMIT_WINDOW_MS || 1000),
   keyGenerator: (req: Request) => req.ip as string,
 })
 

src/common/middleware/requestLogger.ts

@@ -5,8 +5,6 @@ import { StatusCodes, getReasonPhrase } from "http-status-codes"
 import type { LevelWithSilent } from "pino"
 import { type CustomAttributeKeys, type Options, pinoHttp } from "pino-http"
 
-import { env } from "@/common/utils/envConfig"
-
 enum LogLevel {
   Fatal = "fatal",
   Error = "error",
@@ -26,7 +24,7 @@ type PinoCustomProps = {
 
 const requestLogger = (options?: Options): RequestHandler[] => {
   const pinoOptions: Options = {
-    enabled: env.isProduction,
+    enabled: !!process.env.isProduction,
     customProps: customProps as unknown as Options["customProps"],
     redact: [],
     genReqId,
@@ -56,7 +54,7 @@ const customProps = (req: Request, res: Response): PinoCustomProps => ({
 })
 
 const responseBodyMiddleware: RequestHandler = (_req, res, next) => {
-  const isNotProduction = !env.isProduction
+  const isNotProduction = !!process.env.isProduction
   if (isNotProduction) {
     const originalSend = res.send
     res.send = (content) => {

src/common/utils/envConfig.ts

@@ -1,9 +1,11 @@
-import { env } from "@/common/utils/envConfig"
 import { app, logger } from "@/server"
+import dotenv from "dotenv"
 
-const server = app.listen(env.PORT, () => {
-  const { NODE_ENV, HOST, PORT } = env
-  logger.info(`Server (${NODE_ENV}) running on port http://${HOST}:${PORT}`)
+dotenv.config()
+
+const server = app.listen(process.env.PORT, () => {
+  const { NODE_ENV, PORT } = process.env
+  logger.info(`Server (${NODE_ENV}) running on port http://localhost:${PORT}`)
 })
 
 const onCloseSignal = () => {

src/index.ts

@@ -9,7 +9,6 @@ import { swapRouter } from "@/api/routes/swap/swapRouter"
 import errorHandler from "@/common/middleware/errorHandler"
 import rateLimiter from "@/common/middleware/rateLimiter"
 import requestLogger from "@/common/middleware/requestLogger"
-import { env } from "@/common/utils/envConfig"
 
 const logger = pino({ name: "server start" })
 const app: Express = express()
@@ -20,7 +19,7 @@ const app: Express = express()
 // Middlewares
 app.use(express.json())
 app.use(express.urlencoded({ extended: true }))
-app.use(cors({ origin: env.CORS_ORIGIN, credentials: true }))
+app.use(cors({ origin: process.env.CORS_ORIGIN, credentials: true }))
 app.use(helmet())
 app.use(rateLimiter)
 

src/server.ts

@@ -3,6 +3,7 @@ import {
   Strategy1Inch,
   StrategyBalmySDK,
   StrategyCombinedUniswap,
+  StrategyERC4626Wrapper,
   StrategyLifi,
   StrategyMTBILL,
   StrategyPendle,
@@ -15,9 +16,14 @@ const EBTC_MAINNET = "0x657e8c867d8b37dcc18fa4caead9c45eb088c642"
 const SCRVUSD_MAINNET = "0x0655977feb2f289a4ab78af67bab0d17aab84367"
 const USD3_MAINNET = "0x0d86883faf4ffd7aeb116390af37746f45b6f378"
 const EUSD_MAINNET = "0xa0d69e286b938e21cbf7e51d71f6a4c8918f482f"
+const WSTUSR_MAINNET = "0x1202f5c7b4b9e47a1a484e8b270be34dbbc75055"
 
 const mainnetRoutingConfig: ChainRoutingConfig = [
   // WRAPPERS
+  {
+    strategy: StrategyERC4626Wrapper.name(),
+    match: {},
+  },
   {
     strategy: StrategyRepayWrapper.name(),
     match: {
@@ -56,6 +62,7 @@ const mainnetRoutingConfig: ChainRoutingConfig = [
         USD3_MAINNET,
         EUSD_MAINNET,
         SCRVUSD_MAINNET,
+        WSTUSR_MAINNET,
       ],
     },
   },
@@ -109,6 +116,20 @@ const mainnetRoutingConfig: ChainRoutingConfig = [
   // then anything available through balmy. Overswap exact out
   {
     strategy: StrategyBalmySDK.name(),
+    config: {
+      sourcesFilter: {
+        includeSources: [
+          "kyberswap",
+          "paraswap",
+          "odos",
+          "1inch",
+          "li-fi",
+          "open-ocean",
+          "conveyor",
+          "uniswap",
+        ],
+      },
+    },
     match: {},
   },
 ]

src/swapService/config/mainnet.ts

@@ -61,8 +61,10 @@ export async function runPipeline(
   return finalResult.response
 }
 
+// TODO tokenlist, interfaces
 // TODO error handling
 // TODO npm interfaces, supported chains
 // TODO cache pipeline
 // TODO env validation
 // TODO logging
+// TODO pendle rollover

src/swapService/runner.ts

@@ -20,5 +20,6 @@ export class CustomSourceList extends LocalSourceList {
       ...mutableThis.sources,
       ...customSources,
     }
+    delete mutableThis.sources.balmy
   }
 }

src/swapService/strategies/balmySDK/customSourceList.ts

@@ -1,6 +1,7 @@
 import { Strategy1Inch } from "./strategy1Inch"
 import { StrategyBalmySDK } from "./strategyBalmySDK"
 import { StrategyCombinedUniswap } from "./strategyCombinedUniswap"
+import { StrategyERC4626Wrapper } from "./strategyERC4626Wrapper"
 import { StrategyLifi } from "./strategyLifi"
 import { StrategyMTBILL } from "./strategyMTBILL"
 import { StrategyPendle } from "./strategyPendle"
@@ -14,6 +15,7 @@ export {
   StrategyLifi,
   StrategyRepayWrapper,
   StrategyBalmySDK,
+  StrategyERC4626Wrapper,
 }
 
 export const strategies = {
@@ -24,4 +26,5 @@ export const strategies = {
   [StrategyRepayWrapper.name()]: StrategyRepayWrapper,
   [StrategyBalmySDK.name()]: StrategyBalmySDK,
   [StrategyLifi.name()]: StrategyLifi,
+  [StrategyERC4626Wrapper.name()]: StrategyERC4626Wrapper,
 }