feat: Add customizable log level for 'username already exists' error

spec/ParseUser.spec.js

@@ -4430,3 +4430,39 @@ describe('allowClientClassCreation option', () => {
     defaultConfiguration.allowClientClassCreation = true;
   });
 });
+
+fdescribe('log levels', () => {
+  const logLevels = [undefined, 'silent', 'info', 'warn', 'error'];
+
+  it_id('bd3929eb-85dd-4955-ac1d-5ba59ab1b9a3')(it)('should use log level for username already exists error', async () => {
+    for (const logLevel of logLevels) {
+      await reconfigureServer({
+        logLevels: {
+          usernameAlreadyExists: logLevel,
+        },
+      });
+
+      const logger = require('../lib/logger').logger;
+      spyOn(logger, 'warn').and.callFake(() => {});
+      spyOn(logger, 'error').and.callFake(() => {});
+      spyOn(logger, 'info').and.callFake(() => {});
+
+      await Parse.User.signUp('user', 'pass');
+      await expectAsync(Parse.User.signUp('user', 'pass')).toBeRejectedWith(
+        new Parse.Error(
+          Parse.Error.USERNAME_TAKEN,
+          'Account already exists for this username.'
+        )
+      );
+
+      logLevels.forEach(level => {
+        if (level == 'silent') {
+          return;
+        }
+        const levelOrDefault = level || 'error';
+        expect(logger[levelOrDefault]).toHaveBeenCalledTimes(level === logLevel ? 1 : 0);
+        logger[levelOrDefault].calls.reset();
+      });
+    }
+  });
+});

spec/helper.js

@@ -150,6 +150,7 @@ if (silent) {
     triggerAfter: 'silent',
     triggerBeforeError: 'silent',
     triggerBeforeSuccess: 'silent',
+    usernameAlreadyExists: 'silent',
   };
 }
 

src/Options/Definitions.js

@@ -1117,4 +1117,10 @@ module.exports.LogLevels = {
       'Log level used by the Cloud Code Triggers `beforeSave`, `beforeDelete`, `beforeFind`, `beforeLogin` on success. Default is `info`.',
     default: 'info',
   },
+  usernameAlreadyExists: {
+    env: 'PARSE_SERVER_LOG_LEVELS_USERNAME_ALREADY_EXISTS',
+    help:
+      'Log level for the username already exists error when trying to sign up. Default is `error`.',
+    default: 'error',
+  },
 };

src/Options/index.js

@@ -635,4 +635,8 @@ export interface LogLevels {
   :DEFAULT: error
   */
   cloudFunctionError: ?string;
+  /* Log level for the username already exists error when trying to sign up. Default is `error`.
+  :DEFAULT: error
+  */
+  usernameAlreadyExists: ?string;
 }

src/RestWrite.js

@@ -739,10 +739,14 @@ RestWrite.prototype._validateUserName = function () {
     )
     .then(results => {
       if (results.length > 0) {
-        throw new Parse.Error(
+        const usernameError = new Parse.Error(
           Parse.Error.USERNAME_TAKEN,
           'Account already exists for this username.'
         );
+        if (this.config.logLevels.usernameAlreadyExists !== 'silent') {
+          logger[this.config.logLevels.usernameAlreadyExists](JSON.stringify(usernameError));
+        }
+        throw usernameError;
       }
       return;
     });
@@ -1557,10 +1561,14 @@ RestWrite.prototype.runDatabaseOperation = function () {
 
         // Quick check, if we were able to infer the duplicated field name
         if (error && error.userInfo && error.userInfo.duplicated_field === 'username') {
-          throw new Parse.Error(
+          const usernameError = new Parse.Error(
             Parse.Error.USERNAME_TAKEN,
             'Account already exists for this username.'
           );
+          if (this.config.logLevels.usernameAlreadyExists !== 'silent') {
+            logger[this.config.logLevels.usernameAlreadyExists](JSON.stringify(usernameError));
+          }
+          throw usernameError;
         }
 
         if (error && error.userInfo && error.userInfo.duplicated_field === 'email') {
@@ -1585,10 +1593,14 @@ RestWrite.prototype.runDatabaseOperation = function () {
           )
           .then(results => {
             if (results.length > 0) {
-              throw new Parse.Error(
+              const usernameError = new Parse.Error(
                 Parse.Error.USERNAME_TAKEN,
                 'Account already exists for this username.'
               );
+              if (this.config.logLevels.usernameAlreadyExists !== 'silent') {
+                logger[this.config.logLevels.usernameAlreadyExists](JSON.stringify(usernameError));
+              }
+              throw usernameError;
             }
             return this.config.database.find(
               this.className,