Explorer: introduce circulating supply, active stake, and price on cluster stats page (#16095)

* feat: add styles form staking component

* feat: introduce circulating supply, active stake, and price on cluster stats page

* feat: add an error state for coingecko

explorer/package-lock.json

@@ -5424,6 +5424,11 @@
       "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
     },
+    "coingecko-api": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/coingecko-api/-/coingecko-api-1.0.10.tgz",
+      "integrity": "sha512-7YLLC85+daxAw5QlBWoHVBVpJRwoPr4HtwanCr8V/WRjoyHTa1Lb9DQAvv4MDJZHiz4no6HGnDQnddtjV35oRA=="
+    },
     "collect-v8-coverage": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/collect-v8-coverage/-/collect-v8-coverage-1.0.1.tgz",

explorer/package.json

@@ -30,6 +30,7 @@
     "chai": "^4.3.4",
     "chart.js": "^2.9.4",
     "classnames": "2.2.6",
+    "coingecko-api": "^1.0.10",
     "cross-fetch": "^3.1.1",
     "humanize-duration-ts": "^2.1.1",
     "node-sass": "^4.14.1",

explorer/src/pages/ClusterStatsPage.tsx

@@ -7,16 +7,35 @@ import {
   usePerformanceInfo,
   useStatsProvider,
 } from "providers/stats/solanaClusterStats";
-import { slotsToHumanString } from "utils";
+import { lamportsToSol, slotsToHumanString } from "utils";
-import { useCluster } from "providers/cluster";
+import { ClusterStatus, useCluster } from "providers/cluster";
 import { TpsCard } from "components/TpsCard";
 import { displayTimestampUtc } from "utils/date";
+import { Status, useFetchSupply, useSupply } from "providers/supply";
+import { PublicKey } from "@solana/web3.js";
+import { ErrorCard } from "components/common/ErrorCard";
+import { LoadingCard } from "components/common/LoadingCard";
+import { useAccountInfo, useFetchAccountInfo } from "providers/accounts";
+import { FetchStatus } from "providers/cache";
+import { useVoteAccounts } from "providers/accounts/vote-accounts";
+// @ts-ignore
+import * as CoinGecko from "coingecko-api";
 
-const CLUSTER_STATS_TIMEOUT = 10000;
+enum CoingeckoStatus {
+  Success,
+  FetchFailed,
+}
+
+const CoinGeckoClient = new CoinGecko();
+
+const CLUSTER_STATS_TIMEOUT = 5000;
+const STAKE_HISTORY_ACCOUNT = "SysvarStakeHistory1111111111111111111111111";
+const PRICE_REFRESH = 10000;
 
 export function ClusterStatsPage() {
   return (
     <div className="container mt-4">
+      <StakingComponent />
       <div className="card">
         <div className="card-header">
           <div className="row align-items-center">
@@ -32,6 +51,157 @@ export function ClusterStatsPage() {
   );
 }
 
+function StakingComponent() {
+  const { status } = useCluster();
+  const supply = useSupply();
+  const fetchSupply = useFetchSupply();
+  const fetchAccount = useFetchAccountInfo();
+  const stakeInfo = useAccountInfo(STAKE_HISTORY_ACCOUNT);
+  const coinInfo = useCoinGecko("solana");
+  const { fetchVoteAccounts, voteAccounts } = useVoteAccounts();
+
+  function fetchData() {
+    fetchSupply();
+    fetchAccount(new PublicKey(STAKE_HISTORY_ACCOUNT));
+    fetchVoteAccounts();
+  }
+
+  React.useEffect(() => {
+    if (status === ClusterStatus.Connected) {
+      fetchData();
+    }
+  }, [status]); // eslint-disable-line react-hooks/exhaustive-deps
+
+  const deliquentStake = React.useMemo(() => {
+    if (voteAccounts) {
+      return voteAccounts.delinquent.reduce(
+        (prev, current) => prev + current.activatedStake,
+        0
+      );
+    }
+  }, [voteAccounts]);
+
+  let stakeHistory = stakeInfo?.data?.details?.data?.parsed.info;
+
+  if (supply === Status.Disconnected) {
+    // we'll return here to prevent flicker
+    return null;
+  }
+
+  if (
+    supply === Status.Idle ||
+    supply === Status.Connecting ||
+    !stakeInfo ||
+    !stakeHistory ||
+    !coinInfo
+  ) {
+    return <LoadingCard />;
+  } else if (typeof supply === "string") {
+    return <ErrorCard text={supply} retry={fetchData} />;
+  } else if (stakeInfo.status === FetchStatus.FetchFailed) {
+    return (
+      <ErrorCard text={"Failed to fetch active stake"} retry={fetchData} />
+    );
+  }
+
+  stakeHistory = stakeHistory[0].stakeHistory;
+
+  const circulatingPercentage = (
+    (supply.circulating / supply.total) *
+    100
+  ).toFixed(1);
+
+  let delinquentStakePercentage;
+  if (deliquentStake) {
+    delinquentStakePercentage = (
+      (deliquentStake / stakeHistory.effective) *
+      100
+    ).toFixed(1);
+  }
+
+  let solanaInfo;
+  if (coinInfo.status === CoingeckoStatus.Success) {
+    solanaInfo = coinInfo.coinInfo;
+  }
+
+  return (
+    <div className="card staking-card">
+      <div className="card-body">
+        <div className="d-flex">
+          <div className="p-2 flex-fill">
+            <h4>Circulating Supply</h4>
+            <h1>
+              <em>{displayLamports(supply.circulating)}</em> /{" "}
+              <small>{displayLamports(supply.total)}</small>
+            </h1>
+            <h5>
+              <em>{circulatingPercentage}%</em> is circulating
+            </h5>
+          </div>
+          <div className="p-2 flex-fill">
+            <h4>Active Stake</h4>
+            <h1>
+              <em>{displayLamports(stakeHistory.effective)}</em> /{" "}
+              <small>{displayLamports(supply.total)}</small>
+            </h1>
+            {delinquentStakePercentage && (
+              <h5>
+                Delinquent stake: <em>{delinquentStakePercentage}%</em>
+              </h5>
+            )}
+          </div>
+          {solanaInfo && (
+            <div className="p-2 flex-fill">
+              <h4>Price</h4>
+              <h1>
+                <em>${solanaInfo.price.toFixed(2)}</em>{" "}
+                {solanaInfo.price_change_percentage_24h > 0 && (
+                  <small>
+                    &uarr; {solanaInfo.price_change_percentage_24h.toFixed(2)}%
+                  </small>
+                )}
+                {solanaInfo.price_change_percentage_24h < 0 && (
+                  <small>
+                    &darr; {solanaInfo.price_change_percentage_24h.toFixed(2)}%
+                  </small>
+                )}
+                {solanaInfo.price_change_percentage_24h === 0 && (
+                  <small>0%</small>
+                )}
+              </h1>
+              <h5>
+                24h Vol: <em>${abbreviatedNumber(solanaInfo.volume_24)}</em>{" "}
+                MCap: <em>${abbreviatedNumber(solanaInfo.market_cap)}</em>
+              </h5>
+            </div>
+          )}
+          {coinInfo.status === CoingeckoStatus.FetchFailed && (
+            <div className="p-2 flex-fill">
+              <h4>Price</h4>
+              <h1>
+                <em>$--.--</em>
+              </h1>
+              <h5>Error fetching the latest price information</h5>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+const abbreviatedNumber = (value: number, fixed = 1) => {
+  if (value < 1e3) return value;
+  if (value >= 1e3 && value < 1e6) return +(value / 1e3).toFixed(fixed) + "K";
+  if (value >= 1e6 && value < 1e9) return +(value / 1e6).toFixed(fixed) + "M";
+  if (value >= 1e9 && value < 1e12) return +(value / 1e9).toFixed(fixed) + "B";
+  if (value >= 1e12) return +(value / 1e12).toFixed(fixed) + "T";
+};
+
+function displayLamports(value: number) {
+  return abbreviatedNumber(lamportsToSol(value));
+}
+
 function StatsCardBody() {
   const dashboardInfo = useDashboardInfo();
   const performanceInfo = usePerformanceInfo();
@@ -158,3 +328,71 @@ export function StatsNotReady({ error }: { error: boolean }) {
     </div>
   );
 }
+
+interface CoinInfo {
+  price: number;
+  volume_24: number;
+  market_cap: number;
+  price_change_percentage_24h: number;
+}
+
+interface CoinInfoResult {
+  data: {
+    market_data: {
+      current_price: {
+        usd: number;
+      };
+      total_volume: {
+        usd: number;
+      };
+      market_cap: {
+        usd: number;
+      };
+      price_change_percentage_24h: number;
+    };
+  };
+}
+
+type CoinGeckoResult = {
+  coinInfo?: CoinInfo;
+  status: CoingeckoStatus;
+};
+
+function useCoinGecko(coinId: string): CoinGeckoResult | undefined {
+  const [coinInfo, setCoinInfo] = React.useState<CoinGeckoResult>();
+
+  React.useEffect(() => {
+    const getCoinInfo = () => {
+      CoinGeckoClient.coins
+        .fetch("solana")
+        .then((info: CoinInfoResult) => {
+          setCoinInfo({
+            coinInfo: {
+              price: info.data.market_data.current_price.usd,
+              volume_24: info.data.market_data.total_volume.usd,
+              market_cap: info.data.market_data.market_cap.usd,
+              price_change_percentage_24h:
+                info.data.market_data.price_change_percentage_24h,
+            },
+            status: CoingeckoStatus.Success,
+          });
+        })
+        .catch((error: any) => {
+          setCoinInfo({
+            status: CoingeckoStatus.FetchFailed,
+          });
+        });
+    };
+
+    getCoinInfo();
+    const interval = setInterval(() => {
+      getCoinInfo();
+    }, PRICE_REFRESH);
+
+    return () => {
+      clearInterval(interval);
+    };
+  }, [setCoinInfo]);
+
+  return coinInfo;
+}

explorer/src/providers/accounts/vote-accounts.tsx

@@ -0,0 +1,32 @@
+import { Connection, VoteAccountStatus } from "@solana/web3.js";
+import { Cluster, useCluster } from "providers/cluster";
+import React from "react";
+import { reportError } from "utils/sentry";
+
+async function fetchVoteAccounts(
+  cluster: Cluster,
+  url: string,
+  setVoteAccounts: React.Dispatch<
+    React.SetStateAction<VoteAccountStatus | undefined>
+  >
+) {
+  try {
+    const connection = new Connection(url);
+    const result = await connection.getVoteAccounts();
+    setVoteAccounts(result);
+  } catch (error) {
+    if (cluster !== Cluster.Custom) {
+      reportError(error, { url });
+    }
+  }
+}
+
+export function useVoteAccounts() {
+  const [voteAccounts, setVoteAccounts] = React.useState<VoteAccountStatus>();
+  const { cluster, url } = useCluster();
+
+  return {
+    fetchVoteAccounts: () => fetchVoteAccounts(cluster, url, setVoteAccounts),
+    voteAccounts,
+  };
+}

explorer/src/scss/_solana.scss

@@ -353,3 +353,19 @@ pre.data-wrap, pre.json-wrap {
 pre.json-wrap {
   max-width: 36rem;
 }
+
+.staking-card {
+  h1 {
+    margin-bottom: .75rem;
+    small {
+      font-size: 1rem;
+    }
+  }
+  h5 {
+    margin-bottom: 0;
+  }
+  em {
+    font-style: normal;
+    color: $primary
+  }
+}