feat: Linea chain added (#98)

README.md

@@ -98,9 +98,10 @@ The [`sample.config.ts` file](./sample.config.ts) already defines all blockchain
 1. Avalanche
 1. BNB Chain
 1. Ethereum
+1. Fantom
+1. Linea
 1. Polygon
 1. Solana
-1. Fantom
 
 so you don't have to describe them explicitly. However, the sample config uses references to the environment variables (via the `${process.env.*}` notation) where sensitive or private data is involved: for example, an API key to access deBridge-managed websocket, or private keys to wallets with reserve funds for order fulfillment are designed to be accessed by the configuration file as environment variables.
 
@@ -138,7 +139,7 @@ The core on-chain DLN protocol is designed to work with arbitrary tokens on eith
 
 As for now, deBridge uses two buckets of tokens for asset routing:
 1. the USDC token, emitted by Circle Inc. on every DLN supported chain, and
-1. the ETH coin, on Ethereum and Arbitrum, and
+1. the ETH coin, on Ethereum, Arbitrum and Linea, and
 1. the wETH token, on Avalanche, BNB Chain and Polygon
 
 Both buckets are explicitly defined in the sample configuration file [here](./sample.config.ts)), so every taker is required to **load theirs address with enough USDC and ETH on every chain you are willing to fulfill orders on**.
@@ -148,7 +149,7 @@ Both buckets are explicitly defined in the sample configuration file [here](./sa
 For every chain you as a taker would like to support:
 - Register the reserves-keeping address (its private key must be set as a `takerPrivateKey` in the configuration file) and load it with:
   - a given amount of USDC tokens (e.g., 100,000 USDC),
-  - a given amount of ETH (e.g. 60 ETH) on Ethereum and Arbitrum,
+  - a given amount of ETH (e.g. 60 ETH) on Ethereum, Arbitrum and Linea,
   - a given amount of wETH tokens (e.g. 60 wETH) on Avalanche, BNB Chain and Polygon,
   - a reasonable amount of native blockchain currency (e.g., 1 ETH on Ethereum) to pay gas for fulfillment transactions.
 - Register the unlock authority address (its private key must be set as an `unlockAuthorityPrivateKey` in the configuration file) and load it with:
@@ -167,6 +168,7 @@ Executing cross-chain transactions is all about managing risks properly: no one
 | BNB Chain | 12                  |
 | Ethereum  | 12                  |
 | Fantom    | 12                  |
+| Linea     | 12                  |
 | Polygon   | 256                 |
 | Solana    | Finalized status    |
 

docker-compose.yml

@@ -38,6 +38,11 @@ services:
       - ETHEREUM_TAKER_PRIVATE_KEY=${ETHEREUM_TAKER_PRIVATE_KEY}
       - ETHEREUM_UNLOCK_AUTHORITY_PRIVATE_KEY=${ETHEREUM_UNLOCK_AUTHORITY_PRIVATE_KEY}
 
+      - LINEA_RPC=${LINEA_RPC}
+      - LINEA_BENEFICIARY=${LINEA_BENEFICIARY}
+      - LINEA_TAKER_PRIVATE_KEY=${LINEA_TAKER_PRIVATE_KEY}
+      - LINEA_UNLOCK_AUTHORITY_PRIVATE_KEY=${LINEA_UNLOCK_AUTHORITY_PRIVATE_KEY}
+
       - POLYGON_RPC=${POLYGON_RPC}
       - POLYGON_BENEFICIARY=${POLYGON_BENEFICIARY}
       - POLYGON_TAKER_PRIVATE_KEY=${POLYGON_TAKER_PRIVATE_KEY}

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@debridge-finance/dln-executor",
   "description": "DLN executor is the rule-based daemon service developed to automatically execute orders placed on the deSwap Liquidity Network (DLN) across supported blockchains",
-  "version": "2.6.2",
+  "version": "2.7.0",
   "author": "deBridge",
   "license": "GPL-3.0-only",
   "homepage": "https://debridge.finance",
@@ -39,7 +39,7 @@
     "tslint-plugin-prettier": "2.3.0"
   },
   "dependencies": {
-    "@debridge-finance/dln-client": "5.5.0",
+    "@debridge-finance/dln-client": "5.8.2",
     "@debridge-finance/solana-utils": "4.1.0",
     "@protobuf-ts/plugin": "2.8.1",
     "@solana/web3.js": "1.66.2",

sample.config.ts

@@ -1,7 +1,5 @@
 import {
-  CachePriceFeed,
   ChainId,
-  CoingeckoPriceFeed,
   TokensBucket,
 } from "@debridge-finance/dln-client";
 
@@ -10,6 +8,7 @@ import { CURRENT_ENVIRONMENT as environment } from "./src/environments";
 import { WsNextOrder } from "./src/orderFeeds/ws.order.feed";
 import * as processors from "./src/processors";
 import * as filters from "./src/filters";
+import configurator from "./src/configurator";
 
 // sanity check to ensure that .env file is supplied
 if (process.env.WS_API_KEY === undefined)
@@ -27,8 +26,8 @@ const config: ExecutorLaunchConfig = {
     // Setting the USDC bucket (all tokens are emitted by Circle Inc on every DLN supported chain)
     //
     new TokensBucket({
-      [ChainId.Avalanche]: ["0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E"],
       [ChainId.Arbitrum]: ["0xff970a61a04b1ca14834a43f5de4533ebddb5cc8"],
+      [ChainId.Avalanche]: ["0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E"],
       [ChainId.BSC]: ["0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d"],
       [ChainId.Ethereum]: ["0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48"],
       [ChainId.Polygon]: ["0x2791bca1f2de4661ed88a30c99a7a9449aa84174"],
@@ -42,14 +41,14 @@ const config: ExecutorLaunchConfig = {
       [ChainId.Avalanche]: ['0x49D5c2BdFfac6CE2BFdB6640F4F80f226bc10bAB'],
       [ChainId.BSC]: ['0x2170Ed0880ac9A755fd29B2688956BD959F933F8'],
       [ChainId.Ethereum]: ['0x0000000000000000000000000000000000000000'],
+      [ChainId.Linea]: ['0x0000000000000000000000000000000000000000'],
       [ChainId.Polygon]: ['0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619']
     }),
   ],
 
-  tokenPriceService: new CachePriceFeed(
-    new CoingeckoPriceFeed(process?.env?.COINGECKO_API_KEY),
-    60 * 5 // 5min cache
-  ),
+  tokenPriceService: configurator.tokenPriceService({
+    coingeckoApiKey: process?.env?.COINGECKO_API_KEY
+  }),
 
   orderProcessor: processors.universalProcessor({
     // desired profitability. Setting a higher value would prevent dln-taker from fulfilling most orders because
@@ -212,6 +211,17 @@ const config: ExecutorLaunchConfig = {
       takerPrivateKey: `${process.env.POLYGON_TAKER_PRIVATE_KEY}`,
       unlockAuthorityPrivateKey: `${process.env.POLYGON_UNLOCK_AUTHORITY_PRIVATE_KEY}`,
     },
+
+    {
+      chain: ChainId.Linea,
+      chainRpc: `${process.env.LINEA_RPC}`,
+
+      constraints: {},
+
+      beneficiary: `${process.env.LINEA_BENEFICIARY}`,
+      takerPrivateKey: `${process.env.LINEA_TAKER_PRIVATE_KEY}`,
+      unlockAuthorityPrivateKey: `${process.env.LINEA_UNLOCK_AUTHORITY_PRIVATE_KEY}`,
+    }
   ],
 };
 

sample.env

@@ -73,6 +73,12 @@ FANTOM_TAKER_PRIVATE_KEY=
 FANTOM_UNLOCK_AUTHORITY_PRIVATE_KEY=
 FANTOM_BENEFICIARY=0x...
 
+# Linea
+LINEA_RPC=https://
+LINEA_TAKER_PRIVATE_KEY=
+LINEA_UNLOCK_AUTHORITY_PRIVATE_KEY=
+LINEA_BENEFICIARY=0x...
+
 # Solana
 SOLANA_RPC=https://
 SOLANA_TAKER_PRIVATE_KEY=

src/config.ts

@@ -14,13 +14,14 @@ import { HookHandler } from "./hooks/HookHandler";
 type address = string;
 
 export enum SupportedChain {
-  Avalanche = ChainId.Avalanche,
   Arbitrum = ChainId.Arbitrum,
+  Avalanche = ChainId.Avalanche,
   BSC = ChainId.BSC,
   Ethereum = ChainId.Ethereum,
+  Fantom = ChainId.Fantom,
+  Linea = ChainId.Linea,
   Polygon = ChainId.Polygon,
   Solana = ChainId.Solana,
-  Fantom = ChainId.Fantom
 }
 
 export class EvmRebroadcastAdapterOpts {

src/configurator/index.ts

@@ -0,0 +1,9 @@
+import { tokenPriceService } from "./tokenPriceService";
+
+export {
+    tokenPriceService
+}
+
+export default {
+    tokenPriceService
+}