feat(model): add throwOnValidationError option for opting into getting MongooseBulkWriteError if all valid operations succeed in bulkWrite() and insertMany()

lib/error/bulkWriteError.js

@@ -0,0 +1,41 @@
+/*!
+ * Module dependencies.
+ */
+
+'use strict';
+
+const MongooseError = require('./');
+
+
+/**
+ * If `bulkWrite()` or `insertMany()` has validation errors, but
+ * all valid operations succeed, and 'throwOnValidationError' is true,
+ * Mongoose will throw this error.
+ *
+ * @api private
+ */
+
+class MongooseBulkWriteError extends MongooseError {
+  constructor(validationErrors, results, rawResult, operation) {
+    let preview = validationErrors.map(e => e.message).join(', ');
+    if (preview.length > 200) {
+      preview = preview.slice(0, 200) + '...';
+    }
+    super(`${operation} failed with ${validationErrors.length} Mongoose validation errors: ${preview}`);
+
+    this.validationErrors = validationErrors;
+    this.results = results;
+    this.rawResult = rawResult;
+    this.operation = operation;
+  }
+}
+
+Object.defineProperty(MongooseBulkWriteError.prototype, 'name', {
+  value: 'MongooseBulkWriteError'
+});
+
+/*!
+ * exports
+ */
+
+module.exports = MongooseBulkWriteError;

lib/model.js

@@ -64,6 +64,7 @@ const setDottedPath = require('./helpers/path/setDottedPath');
 const STATES = require('./connectionstate');
 const util = require('util');
 const utils = require('./utils');
+const MongooseBulkWriteError = require('./error/bulkWriteError');
 
 const VERSION_WHERE = 1;
 const VERSION_INC = 2;
@@ -2962,6 +2963,7 @@ Model.startSession = function() {
  * @param {Boolean} [options.lean=false] if `true`, skips hydrating and validating the documents. This option is useful if you need the extra performance, but Mongoose won't validate the documents before inserting.
  * @param {Number} [options.limit=null] this limits the number of documents being processed (validation/casting) by mongoose in parallel, this does **NOT** send the documents in batches to MongoDB. Use this option if you're processing a large number of documents and your app is running out of memory.
  * @param {String|Object|Array} [options.populate=null] populates the result documents. This option is a no-op if `rawResult` is set.
+ * @param {Boolean} [options.throwOnValidationError=false] If true and `ordered: false`, throw an error if one of the operations failed validation, but all valid operations completed successfully.
  * @return {Promise} resolving to the raw result from the MongoDB driver if `options.rawResult` was `true`, or the documents that passed validation, otherwise
  * @api public
  */
@@ -3007,6 +3009,7 @@ Model.$__insertMany = function(arr, options, callback) {
   const limit = options.limit || 1000;
   const rawResult = !!options.rawResult;
   const ordered = typeof options.ordered === 'boolean' ? options.ordered : true;
+  const throwOnValidationError = typeof options.throwOnValidationError === 'boolean' ? options.throwOnValidationError : false;
   const lean = !!options.lean;
 
   if (!Array.isArray(arr)) {
@@ -3113,6 +3116,20 @@ Model.$__insertMany = function(arr, options, callback) {
           _setIsNew(attribute, false);
         }
 
+        if (ordered === false && throwOnValidationError && validationErrors.length > 0) {
+          for (let i = 0; i < results.length; ++i) {
+            if (results[i] === void 0) {
+              results[i] = docs[i];
+            }
+          }
+          return callback(new MongooseBulkWriteError(
+            validationErrors,
+            results,
+            res,
+            'insertMany'
+          ));
+        }
+
         if (rawResult) {
           if (ordered === false) {
             for (let i = 0; i < results.length; ++i) {
@@ -3308,6 +3325,7 @@ function _setIsNew(doc, val) {
  * @param {Boolean} [options.j=true] If false, disable [journal acknowledgement](https://www.mongodb.com/docs/manual/reference/write-concern/#j-option)
  * @param {Boolean} [options.skipValidation=false] Set to true to skip Mongoose schema validation on bulk write operations. Mongoose currently runs validation on `insertOne` and `replaceOne` operations by default.
  * @param {Boolean} [options.bypassDocumentValidation=false] If true, disable [MongoDB server-side schema validation](https://www.mongodb.com/docs/manual/core/schema-validation/) for all writes in this bulk.
+ * @param {Boolean} [options.throwOnValidationError=false] If true and `ordered: false`, throw an error if one of the operations failed validation, but all valid operations completed successfully.
  * @param {Boolean} [options.strict=null] Overwrites the [`strict` option](https://mongoosejs.com/docs/guide.html#strict) on schema. If false, allows filtering and writing fields not defined in the schema for all writes in this bulk.
  * @return {Promise} resolves to a [`BulkWriteOpResult`](https://mongodb.github.io/node-mongodb-native/4.9/classes/BulkWriteResult.html) if the operation succeeds
  * @api public
@@ -3355,12 +3373,14 @@ Model.bulkWrite = async function bulkWrite(ops, options) {
     let remaining = validations.length;
     let validOps = [];
     let validationErrors = [];
+    const results = [];
     for (let i = 0; i < validations.length; ++i) {
       validations[i]((err) => {
         if (err == null) {
           validOps.push(i);
         } else {
           validationErrors.push({ index: i, error: err });
+          results[i] = err;
         }
         if (--remaining <= 0) {
           completeUnorderedValidation.call(this);
@@ -3373,6 +3393,7 @@ Model.bulkWrite = async function bulkWrite(ops, options) {
       map(v => v.error);
 
     function completeUnorderedValidation() {
+      const validOpIndexes = validOps;
       validOps = validOps.sort().map(index => ops[index]);
 
       this.$__collection.bulkWrite(validOps, options, (error, res) => {
@@ -3385,9 +3406,22 @@ Model.bulkWrite = async function bulkWrite(ops, options) {
           return reject(error);
         }
 
+        for (let i = 0; i < validOpIndexes.length; ++i) {
+          results[validOpIndexes[i]] = null;
+        }
         if (validationErrors.length > 0) {
-          res.mongoose = res.mongoose || {};
-          res.mongoose.validationErrors = validationErrors;
+          if ('throwOnValidationError' in options && options.throwOnValidationError) {
+            return reject(new MongooseBulkWriteError(
+              validationErrors,
+              results,
+              res,
+              'bulkWrite'
+            ));
+          } else {
+            res.mongoose = res.mongoose || {};
+            res.mongoose.validationErrors = validationErrors;
+            res.mongoose.results = results;
+          }
         }
 
         resolve(res);

test/model.test.js

@@ -4189,6 +4189,45 @@ describe('Model', function() {
         const { num } = await Test.findById(_id);
         assert.equal(num, 99);
       });
+
+      it('bulkWrite should throw an error if there were operations that failed validation, ' +
+        'but all operations that passed validation succeeded (gh-13256)', async function() {
+        const userSchema = new Schema({ age: { type: Number } });
+        const User = db.model('User', userSchema);
+
+        const createdUser = await User.create({ name: 'Test' });
+
+        const err = await User.bulkWrite([
+          {
+            updateOne: {
+              filter: { _id: createdUser._id },
+              update: { $set: { age: 'NaN' } },
+              upsert: true
+            }
+          },
+          {
+            updateOne: {
+              filter: { _id: createdUser._id },
+              update: { $set: { age: 13 } },
+              upsert: true
+            }
+          },
+          {
+            updateOne: {
+              filter: { _id: createdUser._id },
+              update: { $set: { age: 12 } },
+              upsert: true
+            }
+          }
+        ], { ordered: false, throwOnValidationError: true })
+          .then(() => null)
+          .catch(err => err);
+
+        assert.ok(err);
+        assert.equal(err.name, 'MongooseBulkWriteError');
+        assert.equal(err.validationErrors[0].path, 'age');
+        assert.equal(err.results[0].path, 'age');
+      });
     });
 
     it('deleteOne with cast error (gh-5323)', async function() {
@@ -6177,6 +6216,29 @@ describe('Model', function() {
 
     });
 
+    it('insertMany should throw an error if there were operations that failed validation, ' +
+        'but all operations that passed validation succeeded (gh-13256)', async function() {
+      const userSchema = new Schema({
+        age: { type: Number }
+      });
+
+      const User = db.model('User', userSchema);
+
+      const err = await User.insertMany([
+        new User({ age: 12 }),
+        new User({ age: 12 }),
+        new User({ age: 'NaN' })
+      ], { ordered: false, throwOnValidationError: true })
+        .then(() => null)
+        .catch(err => err);
+
+      assert.ok(err);
+      assert.equal(err.name, 'MongooseBulkWriteError');
+      assert.equal(err.validationErrors[0].errors['age'].name, 'CastError');
+      assert.ok(err.results[2] instanceof Error);
+      assert.equal(err.results[2].errors['age'].name, 'CastError');
+    });
+
     it('returns writeResult on success', async() => {
 
       const userSchema = new Schema({

types/models.d.ts

@@ -25,6 +25,7 @@ declare module 'mongoose' {
 
   interface MongooseBulkWriteOptions {
     skipValidation?: boolean;
+    throwOnValidationError?: boolean;
   }
 
   interface InsertManyOptions extends
@@ -34,6 +35,7 @@ declare module 'mongoose' {
     rawResult?: boolean;
     ordered?: boolean;
     lean?: boolean;
+    throwOnValidationError?: boolean;
   }
 
   type InsertManyResult<T> = mongodb.InsertManyResult<T> & {