Add crvusd supply allocated to yield basis to relevant endpoint

Author: philippe-git

routes/v1/getCrvusdTotalSupplyNumber.js

@@ -13,13 +13,20 @@
 import { fn } from '#root/utils/api.js';
 import crvusd from "@curvefi/stablecoin-api";
 import configs from '#root/constants/configs/index.js'
+import getCrvusdAllocatedToYieldbasis from '#root/utils/data/prices.curve.fi/yieldbasis-crvusd-allocated.js';
 
 export default fn(async () => {
   await crvusd.default.init('JsonRpc', { url: configs.ethereum.rpcUrl, privateKey: '' }, { gasPrice: 0, maxFeePerGas: 0, maxPriorityFeePerGas: 0, chainId: 1 });
 
-  const crvusdTotalSupply = await crvusd.default.totalSupply();
+  const [
+    crvusdTotalSupply,
+    crvusdAllocatedToYieldbasis,
+  ] = await Promise.all([
+    crvusd.default.totalSupply(),
+    getCrvusdAllocatedToYieldbasis(),
+  ]);
 
-  return Number(crvusdTotalSupply.total);
+  return Number(crvusdTotalSupply.total) + Number(crvusdAllocatedToYieldbasis);
 }, {
   maxAge: 5 * 60, // 5m
   cacheKey: 'getCrvusdTotalSupplyNumber',

utils/data/prices.curve.fi/yieldbasis-crvusd-allocated.js

@@ -0,0 +1,14 @@
+import { httpsAgentWithoutStrictSsl } from '#root/utils/Request.js';
+import memoize from 'memoizee';
+
+const getCrvusdAllocatedToYieldbasis = memoize(async () => {
+  const { data } = await (await fetch('https://prices.curve.finance/v1/crvusd/yield_basis/ethereum/supply', {
+    dispatcher: httpsAgentWithoutStrictSsl,
+  })).json();
+  return data.total_allocated;
+}, {
+  promise: true,
+  maxAge: 30 * 60 * 1000, // That endpoint is cached 30 minutes, no point in querying it more often given its current use-case
+});
+
+export default getCrvusdAllocatedToYieldbasis;