Merge pull request #196 from dappradar/makerdao-fix

makerdao fix [staging]

src/factory/providers/ethereum/maker-dao/index.ts

@@ -0,0 +1,145 @@
+import BigNumber from 'bignumber.js';
+import ERC20_ABI from '../../../../constants/abi/erc20.json';
+import MakerSCDConstants from './makerdao.json';
+import MakerMCDConstants from './maker-mcd.json';
+import formatter from '../../../../util/formatter';
+import util from '../../../../util/blockchainUtil';
+import basicUtil from '../../../../util/basicUtil';
+import { ITvlParams, ITvlReturn } from '../../../../interfaces/ITvl';
+
+async function getJoins(block, chain, provider, web3) {
+  const relyTopic =
+    '0x65fae35e00000000000000000000000000000000000000000000000000000000';
+
+  // get list of auths
+  let offset = 10000;
+  let stored_log;
+  try {
+    stored_log = await basicUtil.readFromCache(
+      'makerdao_log.json',
+      chain,
+      provider,
+    );
+  } catch {}
+
+  let i = Math.max(
+    MakerMCDConstants.STARTBLOCK,
+    Number(stored_log?.block) || 0,
+  );
+  const logs = stored_log?.data || [];
+
+  for (;;) {
+    if (i > block) {
+      break;
+    }
+    try {
+      const seperatedLogs = await web3.eth.getPastLogs({
+        fromBlock: i,
+        toBlock: Math.min(i + offset, block),
+        topics: [relyTopic],
+        address: MakerMCDConstants.VAT,
+      });
+      const tokens = seperatedLogs.map(
+        (log) => `0x${log.topics[1].substr(26)}`,
+      );
+      tokens.forEach((token) => {
+        if (!logs.includes(token)) {
+          logs.push(token);
+        }
+      });
+      i += offset;
+      if (offset < 20) {
+        offset += 2;
+      } else if (offset < 200) {
+        offset += 20;
+      } else if (offset < 2000) {
+        offset += 200;
+      } else {
+        offset += 2000;
+      }
+    } catch (e) {
+      if (offset > 2000) {
+        offset -= 2000;
+      } else if (offset > 200) {
+        offset -= 200;
+      } else if (offset > 20) {
+        offset -= 20;
+      } else if (offset > 2) {
+        offset -= 2;
+      } else {
+        break;
+      }
+    }
+  }
+
+  const log_data = {
+    block: undefined,
+    data: undefined,
+  };
+  log_data.block = Math.max(Number(stored_log.block) || 0, block);
+  log_data.data = [];
+
+  const ilkResults = await util.executeCallOfMultiTargets(
+    logs,
+    MakerMCDConstants.abi,
+    'ilk',
+    [],
+    block,
+    chain,
+    web3,
+  );
+  ilkResults.forEach((result, index) => {
+    if (result) {
+      log_data.data.push(logs[index]);
+    }
+  });
+
+  await basicUtil.saveIntoCache(log_data, 'makerdao_log.json', chain, provider);
+  return log_data.data;
+}
+
+async function tvl(params: ITvlParams): Promise<Partial<ITvlReturn>> {
+  const { block, chain, provider, web3 } = params;
+  const balances = {};
+
+  const scdContract = new web3.eth.Contract(
+    ERC20_ABI,
+    MakerSCDConstants.WETH_ADDRESS,
+  );
+  balances[MakerSCDConstants.WETH_ADDRESS] = new BigNumber(
+    await scdContract.methods
+      .balanceOf(MakerSCDConstants.TUB_ADDRESS)
+      .call(null, block),
+  );
+
+  if (block >= MakerMCDConstants.STARTBLOCK) {
+    let joins = await getJoins(block, chain, provider, web3);
+
+    let gemResults = await util.executeCallOfMultiTargets(
+      joins,
+      MakerMCDConstants.abi,
+      'gem',
+      [],
+      block,
+      chain,
+      web3,
+    );
+
+    joins = joins.filter((_, index) => gemResults[index]);
+    gemResults = gemResults.filter((_, index) => gemResults[index]);
+    const balanceResults = await util.getTokenBalancesOfHolders(
+      joins,
+      gemResults,
+      block,
+      chain,
+      web3,
+    );
+
+    formatter.sumMultiBalanceOf(balances, balanceResults);
+  }
+
+  formatter.convertBalancesToFixed(balances);
+  return { balances };
+}
+
+export { tvl };

src/factory/providers/ethereum/maker-dao/maker-mcd.json

@@ -0,0 +1,40 @@
+{
+  "KOVANVAT": "0xba987bdb501d131f766fee8180da5d81b34b69d9",
+  "KOVANPOT": "0xea190dbdc7adf265260ec4da6e9675fd4f5a78bb",
+  "KOVANJUG": "0xcbb7718c9f39d05aeede1c472ca8bf804b2f1ead",
+  "KOVANSTARTBLOCK": 14764534,
+  "VAT": "0x35d1b3f3d7966a1dfe207aa4514c12a259a0492b",
+  "POT": "0x197e90f9fad81970ba7976f33cbd77088e5d7cf7",
+  "JUG": "0x19c0976f590d67707e62397c87829d896dc0f1f1",
+  "DAI": "0x6b175474e89094c44da98b954eedeac495271d0f",
+  "STARTBLOCK": 8928152,
+  "abi": [
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "ilk",
+      "outputs": [{ "internalType": "bytes32", "name": "", "type": "bytes32" }],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "gem",
+      "outputs": [{ "internalType": "address", "name": "", "type": "address" }],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "Pie",
+      "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    }
+  ]
+}

src/factory/providers/ethereum/maker-dao/makerdao.json

@@ -0,0 +1,5 @@
+ {
+  "TUB_ADDRESS": "0x448a5065aebb8e423f0896e6c5d525c040f59af3",
+  "DAI_ADDRESS": "0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359",
+  "WETH_ADDRESS": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"
+}