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Ryang-21llama
Ryang-21
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llama
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Blend v2 (#14471)
Co-authored-by: llama <llama@llama.fi> Co-authored-by: Ryang-21 <Ryang-21@users.noreply.github.com>
1 parent 6137f28 commit c0f9a47

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Lines changed: 166 additions & 4 deletions

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‎projects/blend-backstop-v2/api.js‎

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const { BackstopConfig, BackstopToken, BackstopPool, BackstopPoolV2, } = require("@blend-capital/blend-sdk");
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const { nativeToScVal, rpc, Account, TransactionBuilder, Contract, scValToNative } = require("@stellar/stellar-sdk");
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const BACKSTOP_ID = "CAQQR5SWBXKIGZKPBZDH3KM5GQ5GUTPKB7JAFCINLZBC5WXPJKRG3IM7";
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const network = {
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rpc: "https://soroban-rpc.creit.tech/",
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passphrase: "Public Global Stellar Network ; September 2015",
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};
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async function getTokenBalance(
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token_id,
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address
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) {
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// account does not get validated during simulateTx
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const account = new Account('GANXGJV2RNOFMOSQ2DTI3RKDBAVERXUVFC27KW3RLVQCLB3RYNO3AAI4', '123');
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const tx_builder = new TransactionBuilder(account, {
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fee: '1000',
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timebounds: { minTime: 0, maxTime: 0 },
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networkPassphrase: network.passphrase,
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});
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tx_builder.addOperation(new Contract(token_id).call('balance', nativeToScVal(address, {type: 'address'})));
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const stellarRpc = new rpc.Server(network.rpc, network.opts);
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const scval_result = await stellarRpc.simulateTransaction(
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tx_builder.build()
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);
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if (scval_result == undefined) {
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throw Error(`unable to fetch balance for token: ${token_id}`);
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}
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if (rpc.Api.isSimulationSuccess(scval_result)) {
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const val = scValToNative(scval_result.result.retval);
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return val;
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} else {
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throw Error(`unable to fetch balance for token: ${token_id}`);
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}
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}
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async function tvl(api) {
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let backstop = await BackstopConfig.load(network, BACKSTOP_ID);
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let backstopTokeData = await BackstopToken.load(
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network,
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backstop.backstopTkn,
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backstop.blndTkn,
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backstop.usdcTkn
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);
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let totalBackstopTokens = await getTokenBalance(
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backstop.backstopTkn,
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BACKSTOP_ID
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);
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let totalBLND = Number(totalBackstopTokens) * backstopTokeData.blndPerLpToken / 1e7;
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let totalUSDC = Number(totalBackstopTokens) * backstopTokeData.usdcPerLpToken / 1e7;
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// backstop token is a 80% BLND 20% USDC Comet pool (Balancer v1 fork)
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api.addCGToken("usd-coin", totalUSDC);
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api.addCGToken('blend', totalBLND);
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return api.getBalances();
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}
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module.exports = {
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stellar: {
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tvl: () => ({}),
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pool2: tvl
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},
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};

‎projects/blend-backstop-v2/index.js‎

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const { getExports } = require("../helper/heroku-api");
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module.exports = {
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timetravel: false,
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misrepresentedTokens: false,
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methodology: `Counts the total amount of BLND-USDC LP shares held by the Blend backstop V2 contract.`,
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...getExports("blend-backstop-v2", ['stellar'])
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};

‎projects/blend-backstop/api.js‎

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const { BackstopConfig, BackstopToken } = require("@blend-capital/blend-sdk");
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const { nativeToScVal, rpc, Account, TransactionBuilder, Contract, scValToNative } = require("@stellar/stellar-sdk");
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const BACKSTOP_ID = "CAO3AGAMZVRMHITL36EJ2VZQWKYRPWMQAPDQD5YEOF3GIF7T44U4JAL3";
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@@ -7,24 +8,58 @@ const network = {
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passphrase: "Public Global Stellar Network ; September 2015",
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};
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async function getTokenBalance(
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token_id,
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address
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) {
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// account does not get validated during simulateTx
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const account = new Account('GANXGJV2RNOFMOSQ2DTI3RKDBAVERXUVFC27KW3RLVQCLB3RYNO3AAI4', '123');
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const tx_builder = new TransactionBuilder(account, {
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fee: '1000',
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timebounds: { minTime: 0, maxTime: 0 },
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networkPassphrase: network.passphrase,
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});
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tx_builder.addOperation(new Contract(token_id).call('balance', nativeToScVal(address, {type: 'address'})));
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const stellarRpc = new rpc.Server(network.rpc, network.opts);
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const scval_result = await stellarRpc.simulateTransaction(
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tx_builder.build()
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);
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if (scval_result == undefined) {
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throw Error(`unable to fetch balance for token: ${token_id}`);
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}
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if (rpc.Api.isSimulationSuccess(scval_result)) {
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const val = scValToNative(scval_result.result.retval);
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return val;
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} else {
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throw Error(`unable to fetch balance for token: ${token_id}`);
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}
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}
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async function tvl(api) {
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let backstop = await BackstopConfig.load(network, BACKSTOP_ID);
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let backstop_token = await BackstopToken.load(
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let backstopTokeData = await BackstopToken.load(
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network,
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backstop.backstopTkn,
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backstop.blndTkn,
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backstop.usdcTkn
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);
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let totalBackstopTokens = await getTokenBalance(
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backstop.backstopTkn,
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BACKSTOP_ID
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);
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let totalBLND = Number(totalBackstopTokens) * backstopTokeData.blndPerLpToken / 1e7;
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let totalUSDC = Number(totalBackstopTokens) * backstopTokeData.usdcPerLpToken / 1e7;
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// backstop token is a 80% BLND 20% USDC Comet pool (Balancer v1 fork)
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api.addCGToken("usd-coin", Number(backstop_token.usdc) / 1e7);
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api.addCGToken('blend', Number(backstop_token.blnd) / 1e7);
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api.addCGToken("usd-coin", totalUSDC);
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api.addCGToken('blend', totalBLND);
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return api.getBalances();
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}
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module.exports = {
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hallmarks: [
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[1745478927, "Calculate TVL using BLND Coin Gecko price instead of approximation via pool weights"],
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[1745858101, "Only account for lp tokens held by the backstop contract"],
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],
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stellar: {
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tvl: () => ({}),

‎projects/blend-pools-v2/api.js‎

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const {
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BackstopConfig,
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PoolV2,
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} = require("@blend-capital/blend-sdk");
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const { PromisePool } = require("@supercharge/promise-pool");
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const { sumTokens2 } = require('../helper/unwrapLPs')
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const BACKSTOP_ID = "CAQQR5SWBXKIGZKPBZDH3KM5GQ5GUTPKB7JAFCINLZBC5WXPJKRG3IM7";
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const network = {
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rpc: "https://soroban-rpc.creit.tech/",
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passphrase: "Public Global Stellar Network ; September 2015",
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};
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async function addPoolTVL(poolId, api, isBorrowed = false) {
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let pool = await PoolV2.load(network, poolId);
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for (const [reserveId, reserve] of Array.from(pool.reserves)) {
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const supply = reserve.totalSupply();
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const borrowed = reserve.totalLiabilities();
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if (isBorrowed) {
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api.add(reserveId, borrowed);
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} else {
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api.add(reserveId, supply - borrowed);
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}
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}
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}
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async function tvl(api) {
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let backstop = await BackstopConfig.load(network, BACKSTOP_ID);
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for (const pool of backstop.rewardZone){
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await addPoolTVL(pool, api);
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}
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return sumTokens2({ api })
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}
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async function borrowed(api) {
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let backstop = await BackstopConfig.load(network, BACKSTOP_ID);
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for (const pool of backstop.rewardZone)
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await addPoolTVL(pool, api, true);
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return sumTokens2({ api })
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}
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module.exports = {
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stellar: {
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tvl, borrowed,
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},
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};

‎projects/blend-pools-v2/index.js‎

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const { getExports } = require("../helper/heroku-api");
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const methodologies = require("../helper/methodologies");
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module.exports = {
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timetravel: false,
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methodology: `${methodologies.lendingMarket}. TVL is calculated and totaled for all Blend V2 pools in the Blend reward zone.`,
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...getExports("blend-pools-v2", ['stellar'], ['borrowed'])
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};

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