Add kamino lending

package.json

@@ -19,7 +19,8 @@
   "license": "ISC",
   "dependencies": {
     "@defillama/sdk": "latest",
-    "@project-serum/anchor": "^0.25.0",
+    "@coral-xyz/borsh": "^0.29.0",
+    "@project-serum/anchor": "^0.26.0",
     "@solana/web3.js": "^1.36.0",
     "@solendprotocol/solend-sdk": "^0.6.2",
     "@supercharge/promise-pool": "^2.1.0",

projects/kamino-lending/index.js

@@ -0,0 +1,71 @@
+const { PublicKey, Keypair } = require('@solana/web3.js');
+const { getConnection, sumTokens } = require('../helper/solana');
+const { Program } = require('@project-serum/anchor');
+const kaminoIdl = require('./kamino-lending-idl.json');
+const { Scope } = require('@hubbleprotocol/scope-sdk');
+const { Token, TOKEN_PROGRAM_ID } = require('@solana/spl-token');
+
+async function tvl() {
+  const connection = getConnection();
+  const programId = new PublicKey('KLend2g3cP87fffoy8q1mQqGKjrxjC8boSyAYavgmjD');
+  const markets = ['7u3HeHxYDLhnCoErrtycNokbQYbWGzLs6JSDqGAv5PfF'];
+  const lendingMarketAuthSeed = 'lma';
+  const scope = new Scope('mainnet-beta', connection);
+  const oraclePrices = await scope.getOraclePrices();
+  const tokensAndOwners = [];
+  const ktokens = {};
+
+  const kaminoLendProgram = new Program(kaminoIdl, programId, { connection, publicKey: PublicKey.unique() });
+  let tvl = 0;
+  for (const market of markets) {
+    const reserves = await kaminoLendProgram.account.reserve.all([
+      { dataSize: 8624 },
+      { memcmp: { offset: 32, bytes: market } },
+    ]);
+
+    for (const reserveData of reserves) {
+      const reserve = reserveData.account;
+      if (
+        ktokens[reserve.liquidity.mintPubkey] ||
+        (await isKToken(new PublicKey(reserve.liquidity.mintPubkey), connection))
+      ) {
+        ktokens[reserve.liquidity.mintPubkey] = true;
+        const liq = Number(reserve.liquidity.availableAmount.toString()) / 10 ** Number(reserve.liquidity.mintDecimals);
+        const oracle = reserve.config.tokenInfo.scopeConfiguration.priceFeed;
+        const chain = reserve.config.tokenInfo.scopeConfiguration.priceChain;
+        if (oracle && chain && Scope.isScopeChainValid(chain)) {
+          const price = await scope.getPriceFromChain(chain, oraclePrices);
+          tvl += liq * price.toNumber();
+        }
+      } else {
+        ktokens[reserve.liquidity.mintPubkey] = false;
+        const [authority] = PublicKey.findProgramAddressSync(
+          [Buffer.from(lendingMarketAuthSeed), new PublicKey(market).toBuffer()],
+          programId
+        );
+        tokensAndOwners.push([reserve.liquidity.mintPubkey, authority]);
+      }
+    }
+  }
+  return { tether: tvl, ...(await sumTokens(tokensAndOwners)) };
+}
+
+async function isKToken(mint, connection) {
+  const mintAcc = new Token(connection, mint, TOKEN_PROGRAM_ID, Keypair.generate());
+  const mintInfo = await mintAcc.getMintInfo();
+  const KAMINO_PROGRAM_ID = new PublicKey('6LtLpnUFNByNXLyCoK9wA2MykKAmQNZKBdY8s47dehDc');
+  const [expectedMintAuthority] = PublicKey.findProgramAddressSync(
+    [Buffer.from('authority'), mint.toBuffer()],
+    KAMINO_PROGRAM_ID
+  );
+  return mintInfo.mintAuthority !== null && mintInfo.mintAuthority.equals(expectedMintAuthority);
+}
+
+module.exports = {
+  timetravel: false,
+  solana: {
+    tvl,
+  },
+  methodology:
+    'TVL consists of deposits made to the protocol and like other lending protocols, borrowed tokens are not counted.',
+};