Clean up explorer data providers (#11334)

explorer/src/components/AccountDetails.tsx

@@ -19,8 +19,6 @@ import { useFetchAccountHistory } from "providers/accounts/history";
 
 type Props = { address: string };
 export default function AccountDetails({ address }: Props) {
-  const fetchAccount = useFetchAccountInfo();
-
   let pubkey: PublicKey | undefined;
   try {
     pubkey = new PublicKey(address);
@@ -29,11 +27,6 @@ export default function AccountDetails({ address }: Props) {
     // TODO handle bad addresses
   }
 
-  // Fetch account on load
-  React.useEffect(() => {
-    if (pubkey) fetchAccount(pubkey);
-  }, [address]); // eslint-disable-line react-hooks/exhaustive-deps
-
   return (
     <div className="container mt-n3">
       <div className="header">
@@ -49,10 +42,16 @@ export default function AccountDetails({ address }: Props) {
 }
 
 function AccountCards({ pubkey }: { pubkey: PublicKey }) {
+  const fetchAccount = useFetchAccountInfo();
   const address = pubkey.toBase58();
   const info = useAccountInfo(address);
   const refresh = useFetchAccountInfo();
 
+  // Fetch account on load
+  React.useEffect(() => {
+    if (pubkey && !info) fetchAccount(pubkey);
+  }, [address]); // eslint-disable-line react-hooks/exhaustive-deps
+
   if (!info || info.status === FetchStatus.Fetching) {
     return <LoadingCard />;
   } else if (

explorer/src/components/TransactionDetails.tsx

@@ -28,13 +28,6 @@ import { isCached } from "providers/transactions/cached";
 
 type Props = { signature: TransactionSignature };
 export default function TransactionDetails({ signature }: Props) {
-  const fetchTransaction = useFetchTransactionStatus();
-
-  // Fetch transaction on load
-  React.useEffect(() => {
-    fetchTransaction(signature);
-  }, [signature]); // eslint-disable-line react-hooks/exhaustive-deps
-
   return (
     <div className="container mt-n3">
       <div className="header">
@@ -52,11 +45,17 @@ export default function TransactionDetails({ signature }: Props) {
 }
 
 function StatusCard({ signature }: Props) {
+  const fetchStatus = useFetchTransactionStatus();
   const status = useTransactionStatus(signature);
   const refresh = useFetchTransactionStatus();
   const details = useTransactionDetails(signature);
   const { firstAvailableBlock } = useCluster();
 
+  // Fetch transaction on load
+  React.useEffect(() => {
+    if (!status) fetchStatus(signature);
+  }, [signature]); // eslint-disable-line react-hooks/exhaustive-deps
+
   if (!status || status.fetchStatus === FetchStatus.Fetching) {
     return <LoadingCard />;
   } else if (status?.fetchStatus === FetchStatus.FetchFailed) {

explorer/src/providers/accounts/history.tsx

@@ -19,7 +19,7 @@ type State = { [address: string]: AccountHistory };
 export enum ActionType {
   Update,
   Add,
-  Remove,
+  Clear,
 }
 
 interface Update {
@@ -32,38 +32,26 @@ interface Update {
 
 interface Add {
   type: ActionType.Add;
-  addresses: string[];
+  address: string;
 }
 
-interface Remove {
+interface Clear {
-  type: ActionType.Remove;
+  type: ActionType.Clear;
-  addresses: string[];
 }
 
-type Action = Update | Add | Remove;
+type Action = Update | Add | Clear;
 type Dispatch = (action: Action) => void;
 
 function reducer(state: State, action: Action): State {
   switch (action.type) {
     case ActionType.Add: {
-      if (action.addresses.length === 0) return state;
       const details = { ...state };
-      action.addresses.forEach((address) => {
+      const address = action.address;
       if (!details[address]) {
         details[address] = {
           status: FetchStatus.Fetching,
         };
       }
-      });
-      return details;
-    }
-
-    case ActionType.Remove: {
-      if (action.addresses.length === 0) return state;
-      const details = { ...state };
-      action.addresses.forEach((address) => {
-        delete details[address];
-      });
       return details;
     }
 
@@ -87,6 +75,10 @@ function reducer(state: State, action: Action): State {
       }
       break;
     }
+
+    case ActionType.Clear: {
+      return {};
+    }
   }
   return state;
 }
@@ -100,45 +92,33 @@ const DispatchContext = React.createContext<Dispatch | undefined>(undefined);
 type HistoryProviderProps = { children: React.ReactNode };
 export function HistoryProvider({ children }: HistoryProviderProps) {
   const [state, dispatch] = React.useReducer(reducer, {});
-  const { accounts } = useAccounts();
+  const { accounts, lastFetchedAddress } = useAccounts();
   const { url } = useCluster();
 
   const manager = React.useRef(new HistoryManager(url));
   React.useEffect(() => {
     manager.current = new HistoryManager(url);
+    dispatch({ type: ActionType.Clear });
   }, [url]);
 
   // Fetch history for new accounts
   React.useEffect(() => {
-    const removeAddresses = new Set<string>();
+    if (lastFetchedAddress) {
-    const fetchAddresses = new Set<string>();
+      const infoFetched =
-    accounts.forEach(({ pubkey, lamports }) => {
+        accounts[lastFetchedAddress] &&
-      const address = pubkey.toBase58();
+        accounts[lastFetchedAddress].lamports !== undefined;
-      if (lamports !== undefined && !state[address])
+      const noHistory = !state[lastFetchedAddress];
-        fetchAddresses.add(address);
+      if (infoFetched && noHistory) {
-      else if (lamports === undefined && state[address])
+        dispatch({ type: ActionType.Add, address: lastFetchedAddress });
-        removeAddresses.add(address);
-    });
-
-    const removeList: string[] = [];
-    removeAddresses.forEach((address) => {
-      manager.current.removeAccountHistory(address);
-      removeList.push(address);
-    });
-    dispatch({ type: ActionType.Remove, addresses: removeList });
-
-    const fetchList: string[] = [];
-    fetchAddresses.forEach((s) => fetchList.push(s));
-    dispatch({ type: ActionType.Add, addresses: fetchList });
-    fetchAddresses.forEach((address) => {
         fetchAccountHistory(
           dispatch,
-        new PublicKey(address),
+          new PublicKey(lastFetchedAddress),
           manager.current,
           true
         );
-    });
+      }
-  }, [accounts]); // eslint-disable-line react-hooks/exhaustive-deps
+    }
+  }, [accounts, lastFetchedAddress]); // eslint-disable-line react-hooks/exhaustive-deps
 
   return (
     <ManagerContext.Provider value={manager.current}>

explorer/src/providers/accounts/index.tsx

@@ -1,7 +1,6 @@
 import React from "react";
 import { StakeAccount } from "solana-sdk-wasm";
 import { PublicKey, Connection, StakeProgram } from "@solana/web3.js";
-import { useQuery } from "../../utils/url";
 import { useCluster, ClusterStatus } from "../cluster";
 import { HistoryProvider } from "./history";
 export { useAccountHistory } from "./history";
@@ -20,7 +19,6 @@ export interface Details {
 }
 
 export interface Account {
-  id: number;
   pubkey: PublicKey;
   status: FetchStatus;
   lamports?: number;
@@ -29,13 +27,14 @@ export interface Account {
 
 type Accounts = { [address: string]: Account };
 interface State {
-  idCounter: number;
   accounts: Accounts;
+  lastFetchedAddress: string | undefined;
 }
 
 export enum ActionType {
   Update,
   Fetch,
+  Clear,
 }
 
 interface Update {
@@ -53,7 +52,11 @@ interface Fetch {
   pubkey: PublicKey;
 }
 
-type Action = Update | Fetch;
+interface Clear {
+  type: ActionType.Clear;
+}
+
+type Action = Update | Fetch | Clear;
 type Dispatch = (action: Action) => void;
 
 function reducer(state: State, action: Action): State {
@@ -65,23 +68,20 @@ function reducer(state: State, action: Action): State {
         const accounts = {
           ...state.accounts,
           [address]: {
-            id: account.id,
             pubkey: account.pubkey,
             status: FetchStatus.Fetching,
           },
         };
-        return { ...state, accounts };
+        return { ...state, accounts, lastFetchedAddress: address };
       } else {
-        const idCounter = state.idCounter + 1;
         const accounts = {
           ...state.accounts,
           [address]: {
-            id: idCounter,
             status: FetchStatus.Fetching,
             pubkey: action.pubkey,
           },
         };
-        return { ...state, accounts, idCounter };
+        return { ...state, accounts, lastFetchedAddress: address };
       }
     }
 
@@ -100,6 +100,13 @@ function reducer(state: State, action: Action): State {
       }
       break;
     }
+
+    case ActionType.Clear: {
+      return {
+        ...state,
+        accounts: {},
+      };
+    }
   }
   return state;
 }
@@ -113,39 +120,19 @@ const DispatchContext = React.createContext<Dispatch | undefined>(undefined);
 type AccountsProviderProps = { children: React.ReactNode };
 export function AccountsProvider({ children }: AccountsProviderProps) {
   const [state, dispatch] = React.useReducer(reducer, {
-    idCounter: 0,
     accounts: {},
+    lastFetchedAddress: undefined,
   });
 
-  const { status, url } = useCluster();
-
   // Check account statuses on startup and whenever cluster updates
+  const { status, url } = useCluster();
   React.useEffect(() => {
-    Object.keys(state.accounts).forEach((address) => {
+    if (status === ClusterStatus.Connecting) {
-      fetchAccountInfo(dispatch, new PublicKey(address), url, status);
+      dispatch({ type: ActionType.Clear });
-    });
+    } else if (status === ClusterStatus.Connected && state.lastFetchedAddress) {
-  }, [status, url]); // eslint-disable-line react-hooks/exhaustive-deps
+      fetchAccountInfo(dispatch, new PublicKey(state.lastFetchedAddress), url);
-
-  const query = useQuery();
-  const values = ACCOUNT_ALIASES.concat(ACCOUNT_ALIASES_PLURAL).map((key) =>
-    query.get(key)
-  );
-  React.useEffect(() => {
-    values
-      .filter((value): value is string => value !== null)
-      .flatMap((value) => value.split(","))
-      // Remove duplicates
-      .filter((item, pos, self) => self.indexOf(item) === pos)
-      .filter((address) => !state.accounts[address])
-      .forEach((address) => {
-        try {
-          fetchAccountInfo(dispatch, new PublicKey(address), url, status);
-        } catch (err) {
-          console.error(err);
-          // TODO handle bad addresses
     }
-      });
+  }, [status, url]); // eslint-disable-line react-hooks/exhaustive-deps
-  }, [values.toString()]); // eslint-disable-line react-hooks/exhaustive-deps
 
   return (
     <StateContext.Provider value={state}>
@@ -159,17 +146,13 @@ export function AccountsProvider({ children }: AccountsProviderProps) {
 async function fetchAccountInfo(
   dispatch: Dispatch,
   pubkey: PublicKey,
-  url: string,
+  url: string
-  status: ClusterStatus
 ) {
   dispatch({
     type: ActionType.Fetch,
     pubkey,
   });
 
-  // We will auto-refetch when status is no longer connecting
-  if (status === ClusterStatus.Connecting) return;
-
   let fetchStatus;
   let details;
   let lamports;
@@ -213,12 +196,7 @@ export function useAccounts() {
   if (!context) {
     throw new Error(`useAccounts must be used within a AccountsProvider`);
   }
-  return {
+  return context;
-    idCounter: context.idCounter,
-    accounts: Object.values(context.accounts).sort((a, b) =>
-      a.id <= b.id ? 1 : -1
-    ),
-  };
 }
 
 export function useAccountInfo(address: string) {
@@ -239,8 +217,8 @@ export function useFetchAccountInfo() {
     );
   }
 
-  const { url, status } = useCluster();
+  const { url } = useCluster();
   return (pubkey: PublicKey) => {
-    fetchAccountInfo(dispatch, pubkey, url, status);
+    fetchAccountInfo(dispatch, pubkey, url);
   };
 }

explorer/src/providers/transactions/details.tsx

@@ -18,7 +18,7 @@ type State = { [signature: string]: Details };
 export enum ActionType {
   Update,
   Add,
-  Remove,
+  Clear,
 }
 
 interface Update {
@@ -30,39 +30,27 @@ interface Update {
 
 interface Add {
   type: ActionType.Add;
-  signatures: TransactionSignature[];
+  signature: TransactionSignature;
 }
 
-interface Remove {
+interface Clear {
-  type: ActionType.Remove;
+  type: ActionType.Clear;
-  signatures: TransactionSignature[];
 }
 
-type Action = Update | Add | Remove;
+type Action = Update | Add | Clear;
 type Dispatch = (action: Action) => void;
 
 function reducer(state: State, action: Action): State {
   switch (action.type) {
     case ActionType.Add: {
-      if (action.signatures.length === 0) return state;
       const details = { ...state };
-      action.signatures.forEach((signature) => {
+      const signature = action.signature;
       if (!details[signature]) {
         details[signature] = {
           fetchStatus: FetchStatus.Fetching,
           transaction: null,
         };
       }
-      });
-      return details;
-    }
-
-    case ActionType.Remove: {
-      if (action.signatures.length === 0) return state;
-      const details = { ...state };
-      action.signatures.forEach((signature) => {
-        delete details[signature];
-      });
       return details;
     }
 
@@ -81,6 +69,10 @@ function reducer(state: State, action: Action): State {
       }
       break;
     }
+
+    case ActionType.Clear: {
+      return {};
+    }
   }
   return state;
 }
@@ -93,32 +85,26 @@ export const DispatchContext = React.createContext<Dispatch | undefined>(
 type DetailsProviderProps = { children: React.ReactNode };
 export function DetailsProvider({ children }: DetailsProviderProps) {
   const [state, dispatch] = React.useReducer(reducer, {});
-
+  const { transactions, lastFetched } = useTransactions();
-  const { transactions } = useTransactions();
   const { url } = useCluster();
 
+  React.useEffect(() => {
+    dispatch({ type: ActionType.Clear });
+  }, [url]);
+
   // Filter blocks for current transaction slots
   React.useEffect(() => {
-    const removeSignatures = new Set<string>();
+    if (lastFetched) {
-    const fetchSignatures = new Set<string>();
+      const confirmed =
-    transactions.forEach(({ signature, info }) => {
+        transactions[lastFetched] &&
-      if (info?.confirmations === "max" && !state[signature])
+        transactions[lastFetched].info?.confirmations === "max";
-        fetchSignatures.add(signature);
+      const noDetails = !state[lastFetched];
-      else if (info?.confirmations !== "max" && state[signature])
+      if (confirmed && noDetails) {
-        removeSignatures.add(signature);
+        dispatch({ type: ActionType.Add, signature: lastFetched });
-    });
+        fetchDetails(dispatch, lastFetched, url);
-
+      }
-    const removeList: string[] = [];
+    }
-    removeSignatures.forEach((s) => removeList.push(s));
+  }, [transactions, lastFetched]); // eslint-disable-line react-hooks/exhaustive-deps
-    dispatch({ type: ActionType.Remove, signatures: removeList });
-
-    const fetchList: string[] = [];
-    fetchSignatures.forEach((s) => fetchList.push(s));
-    dispatch({ type: ActionType.Add, signatures: fetchList });
-    fetchSignatures.forEach((signature) => {
-      fetchDetails(dispatch, signature, url);
-    });
-  }, [transactions]); // eslint-disable-line react-hooks/exhaustive-deps
 
   return (
     <StateContext.Provider value={state}>

explorer/src/providers/transactions/index.tsx

@@ -8,7 +8,7 @@ import {
   PublicKey,
   sendAndConfirmTransaction,
 } from "@solana/web3.js";
-import { useQuery } from "../../utils/url";
+import { useQuery } from "utils/url";
 import { useCluster, Cluster, ClusterStatus } from "../cluster";
 import {
   DetailsProvider,
@@ -36,7 +36,6 @@ export interface TransactionStatusInfo {
 }
 
 export interface TransactionStatus {
-  id: number;
   fetchStatus: FetchStatus;
   signature: TransactionSignature;
   info?: TransactionStatusInfo;
@@ -44,13 +43,14 @@ export interface TransactionStatus {
 
 type Transactions = { [signature: string]: TransactionStatus };
 interface State {
-  idCounter: number;
   transactions: Transactions;
+  lastFetched: TransactionSignature | undefined;
 }
 
 export enum ActionType {
   UpdateStatus,
   FetchSignature,
+  Clear,
 }
 
 interface UpdateStatus {
@@ -65,14 +65,18 @@ interface FetchSignature {
   signature: TransactionSignature;
 }
 
-type Action = UpdateStatus | FetchSignature;
+interface Clear {
+  type: ActionType.Clear;
+}
 
+type Action = UpdateStatus | FetchSignature | Clear;
 type Dispatch = (action: Action) => void;
 
 function reducer(state: State, action: Action): State {
   switch (action.type) {
     case ActionType.FetchSignature: {
-      const transaction = state.transactions[action.signature];
+      const signature = action.signature;
+      const transaction = state.transactions[signature];
       if (transaction) {
         const transactions = {
           ...state.transactions,
@@ -82,18 +86,16 @@ function reducer(state: State, action: Action): State {
             info: undefined,
           },
         };
-        return { ...state, transactions };
+        return { ...state, transactions, lastFetched: signature };
       } else {
-        const nextId = state.idCounter + 1;
         const transactions = {
           ...state.transactions,
           [action.signature]: {
-            id: nextId,
             signature: action.signature,
             fetchStatus: FetchStatus.Fetching,
           },
         };
-        return { ...state, transactions, idCounter: nextId };
+        return { ...state, transactions, lastFetched: signature };
       }
     }
 
@@ -112,6 +114,13 @@ function reducer(state: State, action: Action): State {
       }
       break;
     }
+
+    case ActionType.Clear: {
+      return {
+        ...state,
+        transactions: {},
+      };
+    }
   }
   return state;
 }
@@ -124,8 +133,8 @@ const DispatchContext = React.createContext<Dispatch | undefined>(undefined);
 type TransactionsProviderProps = { children: React.ReactNode };
 export function TransactionsProvider({ children }: TransactionsProviderProps) {
   const [state, dispatch] = React.useReducer(reducer, {
-    idCounter: 0,
     transactions: {},
+    lastFetched: undefined,
   });
 
   const { cluster, status: clusterStatus, url } = useCluster();
@@ -135,9 +144,11 @@ export function TransactionsProvider({ children }: TransactionsProviderProps) {
 
   // Check transaction statuses whenever cluster updates
   React.useEffect(() => {
-    Object.keys(state.transactions).forEach((signature) => {
+    if (clusterStatus === ClusterStatus.Connecting) {
-      fetchTransactionStatus(dispatch, signature, url, clusterStatus);
+      dispatch({ type: ActionType.Clear });
-    });
+    } else if (clusterStatus === ClusterStatus.Connected && state.lastFetched) {
+      fetchTransactionStatus(dispatch, state.lastFetched, url);
+    }
 
     // Create a test transaction
     if (cluster === Cluster.Devnet && testFlag !== null) {
@@ -145,23 +156,6 @@ export function TransactionsProvider({ children }: TransactionsProviderProps) {
     }
   }, [testFlag, cluster, clusterStatus, url]); // eslint-disable-line react-hooks/exhaustive-deps
 
-  // Check for transactions in the url params
-  const values = TX_ALIASES.flatMap((key) => [
-    query.get(key),
-    query.get(key + "s"),
-  ]);
-  React.useEffect(() => {
-    values
-      .filter((value): value is string => value !== null)
-      .flatMap((value) => value.split(","))
-      // Remove duplicates
-      .filter((item, pos, self) => self.indexOf(item) === pos)
-      .filter((signature) => !state.transactions[signature])
-      .forEach((signature) => {
-        fetchTransactionStatus(dispatch, signature, url, clusterStatus);
-      });
-  }, [values.toString()]); // eslint-disable-line react-hooks/exhaustive-deps
-
   return (
     <StateContext.Provider value={state}>
       <DispatchContext.Provider value={dispatch}>
@@ -189,7 +183,7 @@ async function createTestTransaction(
       testAccount.publicKey,
       100000
     );
-    fetchTransactionStatus(dispatch, signature, url, clusterStatus);
+    fetchTransactionStatus(dispatch, signature, url);
     fetchAccount(testAccount.publicKey);
   } catch (error) {
     console.error("Failed to create test success transaction", error);
@@ -208,7 +202,7 @@ async function createTestTransaction(
       [testAccount],
       { confirmations: 1, skipPreflight: false }
     );
-    fetchTransactionStatus(dispatch, signature, url, clusterStatus);
+    fetchTransactionStatus(dispatch, signature, url);
   } catch (error) {
     console.error("Failed to create test failure transaction", error);
   }
@@ -217,17 +211,13 @@ async function createTestTransaction(
 export async function fetchTransactionStatus(
   dispatch: Dispatch,
   signature: TransactionSignature,
-  url: string,
+  url: string
-  status: ClusterStatus
 ) {
   dispatch({
     type: ActionType.FetchSignature,
     signature,
   });
 
-  // We will auto-refetch when status is no longer connecting
-  if (status === ClusterStatus.Connecting) return;
-
   let fetchStatus;
   let info: TransactionStatusInfo | undefined;
   if (isCached(url, signature)) {
@@ -281,12 +271,7 @@ export function useTransactions() {
       `useTransactions must be used within a TransactionsProvider`
     );
   }
-  return {
+  return context;
-    idCounter: context.idCounter,
-    transactions: Object.values(context.transactions).sort((a, b) =>
-      a.id <= b.id ? 1 : -1
-    ),
-  };
 }
 
 export function useTransactionStatus(signature: TransactionSignature) {
@@ -321,8 +306,8 @@ export function useFetchTransactionStatus() {
     );
   }
 
-  const { url, status } = useCluster();
+  const { url } = useCluster();
   return (signature: TransactionSignature) => {
-    fetchTransactionStatus(dispatch, signature, url, status);
+    fetchTransactionStatus(dispatch, signature, url);
   };
 }