use getMultipleAccounts instead of gPA for serum oo

src/client.ts

@@ -56,6 +56,7 @@ import {
 } from './instruction';
 import { Aggregator } from './schema';
 import { TOKEN_PROGRAM_ID } from '@solana/spl-token';
+import { getMultipleAccounts } from '.';
 
 export const tokenToDecimals = {
   "BTC": 4,
@@ -1381,37 +1382,32 @@ export class MangoClient {
       marginAccountsFilters.push(...filters);
     }
 
-    const marginAccountsProms = getFilteredProgramAccounts(connection, programId, marginAccountsFilters)
+    const marginAccounts = await getFilteredProgramAccounts(connection, programId, marginAccountsFilters)
       .then((accounts) => (
         accounts.map(({ publicKey, accountInfo }) =>
           new MarginAccount(publicKey, MarginAccountLayout.decode(accountInfo == null ? undefined : accountInfo.data))
         )
       ))
 
-    const ordersFilters = [
-      {
-        memcmp: {
-          offset: OpenOrders.getLayout(mangoGroup.dexProgramId).offsetOf('owner'),
-          bytes: mangoGroup.signerKey.toBase58()
-        }
-      },
-      {
-        dataSize: OpenOrders.getLayout(mangoGroup.dexProgramId).span
-      }
-    ]
 
-    const openOrdersProms = getFilteredProgramAccounts(connection, mangoGroup.dexProgramId, ordersFilters)
-      .then(
-        (accounts) => (
-          accounts.map(
-            ( { publicKey, accountInfo } ) =>
-            OpenOrders.fromAccountInfo(publicKey, accountInfo, mangoGroup.dexProgramId)
-          )
-        )
-      )
+    const openOrderPks = marginAccounts
+      .map((ma) => ma.openOrders.filter((pk) => !pk.equals(zeroKey)))
+      .flat();
+
+    const openOrderAccountInfos = await getMultipleAccounts(
+      connection,
+      openOrderPks,
+    );
+
+    const openOrders = openOrderAccountInfos.map(
+      ({ publicKey, accountInfo }) =>
+        OpenOrders.fromAccountInfo(
+          publicKey,
+          accountInfo,
+          mangoGroup.dexProgramId,
+        ),
+    );
 
-    const marginAccounts = await marginAccountsProms
-    const openOrders = await openOrdersProms
     const pkToOpenOrdersAccount = {}
     openOrders.forEach(
       (openOrdersAccount) => (

src/utils.ts

@@ -278,19 +278,36 @@ export function parseTokenAccount(
 export async function getMultipleAccounts(
   connection: Connection,
   publicKeys: PublicKey[],
-  commitment?: Commitment
-): Promise<{ publicKey: PublicKey; accountInfo: AccountInfo<Buffer> }[]> {
-  const publickKeyStrs = publicKeys.map((pk) => (pk.toBase58()));
+  commitment?: Commitment,
+): Promise<
+  {
+    publicKey: PublicKey;
+    context: { slot: number };
+    accountInfo: AccountInfo<Buffer>;
+  }[]
+> {
+  const len = publicKeys.length;
+  if (len > 100) {
+    const mid = Math.floor(publicKeys.length / 2);
+    return Promise.all([
+      getMultipleAccounts(connection, publicKeys.slice(0, mid), commitment),
+      getMultipleAccounts(connection, publicKeys.slice(mid, len), commitment),
+    ]).then((a) => a[0].concat(a[1]));
+  }
+  const publicKeyStrs = publicKeys.map((pk) => pk.toBase58());
+  // load connection commitment as a default
+  commitment ||= connection.commitment;
 
-  const args = commitment ? [publickKeyStrs, {commitment}] : [publickKeyStrs];
+  const args = commitment ? [publicKeyStrs, { commitment }] : [publicKeyStrs];
   // @ts-ignore
   const resp = await connection._rpcRequest('getMultipleAccounts', args);
   if (resp.error) {
     throw new Error(resp.error.message);
   }
   return resp.result.value.map(
-    ({ data, executable, lamports, owner } , i) => ({
+    ({ data, executable, lamports, owner }, i: number) => ({
       publicKey: publicKeys[i],
+      context: resp.result.context,
       accountInfo: {
         data: Buffer.from(data[0], 'base64'),
         executable,

tsconfig.json

@@ -2,6 +2,8 @@
   "extends": "@tsconfig/node10/tsconfig.json",
 
   "compilerOptions": {
+    "target": "es6",
+    "lib": ["es2019"],
     "outDir": "./lib",
     "allowJs": true,
     "checkJs": true,
@@ -13,5 +15,10 @@
     "jsx": "react"
   },
   "include": ["./tests/**/*", "./src/**/*"],
-  "exclude": ["./tests/**/*.test.js", "./src/**/*.test.js", "node_modules", "**/node_modules"]
+  "exclude": [
+    "./tests/**/*.test.js",
+    "./src/**/*.test.js",
+    "node_modules",
+    "**/node_modules"
+  ]
 }