Use alphanumeric suffix for username (dydxprotocol#2573)

Author: teddyding

indexer/services/roundtable/__tests__/helpers/usernames-helper.test.ts

@@ -16,14 +16,14 @@ describe('usernames-helper', () => {
     ];
 
     const expectedUsernames = [
-      'CushyHand599',
-      'AmpleCube324',
-      'AwareFood215',
-      'LoudLand654',
-      'MossyStraw800',
-      'BoldGap392',
-      'ZoomEra454',
-      'WiryFern332',
+      'CushyHandVE6',
+      'AmpleCubeLKI',
+      'AwareFoodHGP',
+      'LoudLandXWV',
+      'MossyStraw2JJ',
+      'BoldGapOGY',
+      'ZoomEraQE0',
+      'WiryFernLEC',
     ];
 
     for (let i = 0; i < addresses.length; i++) {

indexer/services/roundtable/src/config.ts

@@ -211,8 +211,8 @@ export const configSchema = {
   STALE_ORDERBOOK_LEVEL_THRESHOLD_SECONDS: parseInteger({ default: 10 }),
 
   // Subaccount username generator
-  SUBACCOUNT_USERNAME_NUM_RANDOM_DIGITS: parseInteger({ default: 3 }),
-  SUBACCOUNT_USERNAME_BATCH_SIZE: parseInteger({ default: 1000 }),
+  SUBACCOUNT_USERNAME_SUFFIX_RANDOM_DIGITS: parseInteger({ default: 3 }),
+  SUBACCOUNT_USERNAME_BATCH_SIZE: parseInteger({ default: 2000 }),
   // number of attempts to generate username for a subaccount
   ATTEMPT_PER_SUBACCOUNT: parseInteger({ default: 3 }),
 };

indexer/services/roundtable/src/helpers/usernames-helper.ts

@@ -4,6 +4,8 @@ import config from '../config';
 import adjectives from './adjectives.json';
 import nouns from './nouns.json';
 
+const suffixCharacters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+
 export function generateUsernameForSubaccount(
   subaccountId: string,
   subaccountNum: number,
@@ -12,12 +14,13 @@ export function generateUsernameForSubaccount(
   const rng = seedrandom(`${subaccountId}/${subaccountNum}/${nounce}`);
   const randomAdjective: string = adjectives[Math.floor(rng() * adjectives.length)];
   const randomNoun: string = nouns[Math.floor(rng() * nouns.length)];
-  const randomNumber: string = Math.floor(rng() * 1000).toString().padStart(
-    config.SUBACCOUNT_USERNAME_NUM_RANDOM_DIGITS, '0');
+  const randomSuffix: string = Array.from(
+    { length: config.SUBACCOUNT_USERNAME_SUFFIX_RANDOM_DIGITS },
+    () => suffixCharacters.charAt(Math.floor(rng() * suffixCharacters.length))).join('');
 
   const capitalizedAdjective: string = randomAdjective.charAt(
     0).toUpperCase() + randomAdjective.slice(1);
   const capitalizedNoun: string = randomNoun.charAt(0).toUpperCase() + randomNoun.slice(1);
 
-  return `${capitalizedAdjective}${capitalizedNoun}${randomNumber}`;
+  return `${capitalizedAdjective}${capitalizedNoun}${randomSuffix}`;
 }

indexer/services/roundtable/src/tasks/subaccount-username-generator.ts

@@ -9,6 +9,8 @@ import config from '../config';
 import { generateUsernameForSubaccount } from '../helpers/usernames-helper';
 
 export default async function runTask(): Promise<void> {
+  const start: number = Date.now();
+
   const subaccountZerosWithoutUsername:
   SubaccountsWithoutUsernamesResult[] = await
   SubaccountUsernamesTable.getSubaccountZerosWithoutUsernames(
@@ -66,11 +68,19 @@ export default async function runTask(): Promise<void> {
     (subaccount) => subaccount.address,
   );
 
+  const duration = Date.now() - start;
+
   logger.info({
     at: 'subaccount-username-generator#runTask',
     message: 'Generated usernames',
     batchSize: subaccountZerosWithoutUsername.length,
     successCount,
     addressSample: subaccountAddresses.slice(0, 10),
+    duration,
   });
+
+  stats.timing(
+    `${config.SERVICE_NAME}.subaccount_username_generator`,
+    duration,
+  );
 }