Merge pull request #29 from DefiLlama/base

add base bridge

package.json

@@ -11,24 +11,24 @@
     "@types/node": "^18.6.4",
     "@types/node-fetch": "^2.6.2",
     "babel-loader": "^8.2.5",
+    "eslint-config-prettier": "^8.3.0",
+    "prettier": "^2.5.1",
     "serverless": "^3.21.0",
     "serverless-offline": "^9.1.6",
     "serverless-prune-plugin": "^2.0.1",
-	"eslint-config-prettier": "^8.3.0",
-	"prettier": "^2.5.1",
     "ts-loader": "^9.3.1"
   },
   "dependencies": {
-    "@defillama/sdk": "^4.0.32",
-    "node-fetch": "^2.6.7",
-    "postgres": "^3.2.4",
-    "bignumber.js": "^9.0.1",
+    "@defillama/sdk": "^4.0.43",
     "async-retry": "^1.3.1",
     "axios": "^0.21.0",
     "axios-rate-limit": "^1.3.0",
+    "bignumber.js": "^9.0.1",
     "dotenv": "^8.2.0",
-    "serverless-webpack": "^5.8.0",
     "graphql": "^16.0.0",
-    "graphql-request": "^4.0.0"
+    "graphql-request": "^4.0.0",
+    "node-fetch": "^2.6.7",
+    "postgres": "^3.2.4",
+    "serverless-webpack": "^5.8.0"
   }
 }

src/adapters/base/index.ts

@@ -0,0 +1,38 @@
+import { BridgeAdapter, PartialContractEventParams } from "../../helpers/bridgeAdapter.type";
+import { getTxDataFromEVMEventLogs } from "../../helpers/processTransactions";
+import { constructTransferParams } from "../../helpers/eventParams";
+
+const WETH = "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2";
+
+const ethDepositParams: PartialContractEventParams = {
+  target: "0x49048044D57e1C92A77f79988d21Fa8fAF74E97e",
+  topic: "TransactionDeposited(address,address,uint256,bytes)",
+  abi: [
+    "event TransactionDeposited(address indexed from,address indexed to, uint256 indexed version, bytes opaqueData)",
+  ],
+  logKeys: {
+    blockNumber: "blockNumber",
+    txHash: "transactionHash",
+  },
+  txKeys: {
+    from: "from",
+    amount: "value",
+  },
+  fixedEventData: {
+    token: WETH,
+    to: "0x49048044D57e1C92A77f79988d21Fa8fAF74E97e",
+  },
+  isDeposit: true,
+};
+
+const constructParams = () => {
+  const eventParams = [ethDepositParams];
+  return async (fromBlock: number, toBlock: number) =>
+    getTxDataFromEVMEventLogs("base", "ethereum", fromBlock, toBlock, eventParams);
+};
+
+const adapter: BridgeAdapter = {
+  ethereum: constructParams(),
+};
+
+export default adapter;

src/adapters/index.ts

@@ -29,6 +29,7 @@ import zksync from "./zksync";
 import polygon_zkevm from "./polygon_zkevm";
 import symbiosis from "./symbiosis";
 import meson from "./meson";
+import base from "./base";
 
 export default {
   polygon,
@@ -60,6 +61,7 @@ export default {
   polygon_zkevm,
   symbiosis,
   meson,
+  base,
 } as {
   [bridge: string]: BridgeAdapter;
 };

src/data/bridgeNetworkData.ts

@@ -442,4 +442,14 @@ export default [
       avalanche: "avax",
     },
   },
+  {
+    id: 29,
+    displayName: "Base Bridge",
+    bridgeDbName: "base",
+    iconLink: "chain:base",
+    largeTxThreshold: 10000,
+    url: "",
+    chains: ["Ethereum", "Base"],
+    destinationChain: "Base",
+  },
 ] as BridgeNetwork[];