🥕 added Carrot tvl adapter (DefiLlama#12205)

Author: jsblair9

projects/carrot/index.js

@@ -0,0 +1,50 @@
+const { PublicKey } = require('@solana/web3.js');
+const { Program } = require("@project-serum/anchor");
+const { getConnection, getProvider, getTokenSupplies } = require('../helper/solana')
+
+async function tvl(api) {
+
+  const connection = getConnection()
+  const programId = 'CarrotwivhMpDnm27EHmRLeQ683Z1PufuqEmBZvD282s'
+  const testVaultExclusion = '2AV35oWyAuSN5wmuy26VD5JirjVpXkfkv5ZMCQ2LtpuV' // our test vault should not be included in TVL 
+
+  // Use this method to track TVL via the token...
+  // const CRT_MINT = 'CRTx1JouZhzSU6XytsE42UQraoGqiHgxabocVfARTy2s';
+  // await getTokenSupplies(CRT_MINT, {api})
+
+  // Use this method to track TVL via onchain state of each Vault by adding the balance at each strategy.
+  const programAccounts = await connection.getProgramAccounts(new PublicKey(programId), {
+    filters: [{
+      memcmp: {
+        offset: 8,
+        bytes: 'CarrotLYPhQzYL4fEsTUvEzw5QDaMGSZUENHSkh7qzQa' // carrot keeper
+      },
+    },]
+  });
+
+  const provider = getProvider();
+  const idl = await Program.fetchIdl(programId, provider)
+  const program = new Program(idl, programId, provider)
+
+  programAccounts.forEach(({ account, pubkey }, i) => {
+    if(pubkey.toBase58() !== testVaultExclusion) {
+      const { assets, strategies } = program.coder.accounts.decode(
+        "Vault",
+        account.data
+      );
+      const assetMap = {}
+      assets.forEach(({assetId, mint }) => assetMap[assetId] = mint.toString())
+
+      strategies.forEach(i => {
+        api.add(assetMap[i.assetId], i.balance.toString())
+      })
+    }
+  })
+}
+
+module.exports = {
+  doublecounted: true,
+  timetravel: false,
+  methodology: 'TVL calculated by calling the onchain state of the CRT Vault accounts, and tallying the balance of each strategy.',
+  solana: { tvl },
+}