feat(NODE-6329): client bulk write happy path

src/index.ts

@@ -464,6 +464,18 @@ export type {
   AggregateOptions,
   DB_AGGREGATE_COLLECTION
 } from './operations/aggregate';
+export type {
+  AnyClientBulkWriteModel,
+  ClientBulkWriteOptions,
+  ClientBulkWriteResult,
+  ClientDeleteManyModel,
+  ClientDeleteOneModel,
+  ClientInsertOneModel,
+  ClientReplaceOneModel,
+  ClientUpdateManyModel,
+  ClientUpdateOneModel,
+  ClientWriteModel
+} from './operations/client_bulk_write/common';
 export type {
   CollationOptions,
   CommandOperation,

src/mongo_client.ts

@@ -30,6 +30,12 @@ import {
   SeverityLevel
 } from './mongo_logger';
 import { TypedEventEmitter } from './mongo_types';
+import { ClientBulkWriteOperation } from './operations/client_bulk_write/client_bulk_write';
+import {
+  type AnyClientBulkWriteModel,
+  type ClientBulkWriteOptions,
+  type ClientBulkWriteResult
+} from './operations/client_bulk_write/common';
 import { executeOperation } from './operations/execute_operation';
 import { RunAdminCommandOperation } from './operations/run_command';
 import type { ReadConcern, ReadConcernLevel, ReadConcernLike } from './read_concern';
@@ -477,6 +483,21 @@ export class MongoClient extends TypedEventEmitter<MongoClientEvents> implements
     return this.s.bsonOptions;
   }
 
+  /**
+   * Executes a client bulk write operation, available on server 8.0+.
+   * @param models - The client bulk write models.
+   * @param options - The client bulk write options.
+   */
+  async bulkWrite(
+    models: AnyClientBulkWriteModel[],
+    options?: ClientBulkWriteOptions
+  ): Promise<ClientBulkWriteResult> {
+    return await executeOperation(
+      this,
+      new ClientBulkWriteOperation(models, resolveOptions(this, options))
+    );
+  }
+
   /**
    * Connect to MongoDB using a url
    *

src/operations/client_bulk_write/client_bulk_write.ts

@@ -0,0 +1,45 @@
+import type { Server } from '../../sdam/server';
+import type { ClientSession } from '../../sessions';
+import { AbstractOperation, Aspect, defineAspects } from '../operation';
+import { ClientBulkWriteCommandBuilder } from './command_builder';
+import {
+  type AnyClientBulkWriteModel,
+  type ClientBulkWriteOptions,
+  type ClientBulkWriteResult
+} from './common';
+import { ClientBulkWriteResultsMerger } from './results_merger';
+
+export class ClientBulkWriteOperation extends AbstractOperation<ClientBulkWriteResult> {
+  override options: ClientBulkWriteOptions;
+  operations: AnyClientBulkWriteModel[];
+
+  override get commandName() {
+    return 'bulkWrite' as const;
+  }
+
+  constructor(operations: AnyClientBulkWriteModel[], options: ClientBulkWriteOptions) {
+    super(options);
+    this.options = options;
+    this.operations = operations;
+  }
+
+  override async execute(
+    server: Server,
+    session: ClientSession | undefined
+  ): Promise<ClientBulkWriteResult> {
+    const options = { ...this.options, ...this.bsonOptions, readPreference: this.readPreference };
+
+    const commmandBuilder = new ClientBulkWriteCommandBuilder(this.operations, options);
+    const commands = commmandBuilder.buildCommands();
+    const resultsMerger = new ClientBulkWriteResultsMerger(options);
+    for (const command of commands) {
+      const cursor = new ClientBulkWriteCursor(command, options);
+      for await (const docs of cursor.toArray()) {
+        resultsMerger.merge(docs);
+      }
+    }
+    return resultsMerger.result;
+  }
+}
+
+defineAspects(ClientBulkWriteOperation, [Aspect.WRITE_OPERATION]);

src/operations/client_bulk_write/common.ts

@@ -144,3 +144,77 @@ export type AnyClientBulkWriteModel =
   | ClientUpdateManyModel
   | ClientDeleteOneModel
   | ClientDeleteManyModel;
+
+  /** @public */
+export interface ClientBulkWriteResult {
+  /**
+   * The total number of documents inserted across all insert operations.
+   */
+  insertedCount: number;
+  /**
+   * The total number of documents upserted across all update operations.
+   */
+  upsertedCount: number;
+  /**
+   * The total number of documents matched across all update operations.
+   */
+  matchedCount: number;
+  /**
+   * The total number of documents modified across all update operations.
+   */
+  modifiedCount: number;
+  /**
+   * The total number of documents deleted across all delete operations.
+   */
+  deletedCount: number;
+}
+
+export interface VerboseClientBulkWriteResult extends ClientBulkWriteResult {
+  /**
+   * The results of each individual insert operation that was successfully performed.
+   */
+  insertResults: Map<number, ClientInsertOneResult>;
+  /**
+   * The results of each individual update operation that was successfully performed.
+   */
+  updateResults: Map<number, ClientUpdateResult>;
+  /**
+   * The results of each individual delete operation that was successfully performed.
+   */
+  deleteResults: Map<number, ClientDeleteResult>;
+}
+
+export interface ClientInsertOneResult {
+  /**
+   * The _id of the inserted document.
+   */
+  insertedId: any;
+}
+
+export interface ClientUpdateResult {
+  /**
+   * The number of documents that matched the filter.
+   */
+  matchedCount: number;
+
+  /**
+   * The number of documents that were modified.
+   */
+  modifiedCount: number;
+
+  /**
+   * The _id field of the upserted document if an upsert occurred.
+   *
+   * It MUST be possible to discern between a BSON Null upserted ID value and this field being
+   * unset. If necessary, drivers MAY add a didUpsert boolean field to differentiate between
+   * these two cases.
+   */
+  upsertedId?: any;
+}
+
+export interface ClientDeleteResult {
+  /**
+   * The number of documents that were deleted.
+   */
+  deletedCount: number;
+}

src/operations/client_bulk_write/results_merger.ts

@@ -0,0 +1,22 @@
+import { Document } from '../../bson';
+import { ClientBulkWriteOptions, ClientBulkWriteResult } from './common';
+
+export class ClientBulkWriteResultsMerger {
+  result: ClientBulkWriteResult; 
+  options: ClientBulkWriteOptions;
+
+  constructor(options: ClientBulkWriteOptions) {
+    this.options = options;
+    this.result = {
+      insertedCount: 0,
+      upsertedCount: 0,
+      matchedCount: 0,
+      modifiedCount: 0,
+      deletedCount: 0
+    };
+  }
+
+  merge(documents: Document[]): ClientBulkWriteResultsMerger {
+    return this;
+  }
+}

test/integration/crud/crud.spec.test.ts

@@ -5,17 +5,14 @@ import { runUnifiedSuite } from '../../tools/unified-spec-runner/runner';
 
 const clientBulkWriteTests = new RegExp(
   [
-    'client bulk write delete with collation',
-    'client bulk write delete with hint',
     'client bulkWrite operations support errorResponse assertions',
     'an individual operation fails during an ordered bulkWrite',
     'an individual operation fails during an unordered bulkWrite',
     'detailed results are omitted from error when verboseResults is false',
     'a top-level failure occurs during a bulkWrite',
     'a bulk write with only errors does not report a partial result',
     'an empty list of write models is a client-side error',
-    'a write concern error occurs during a bulkWrite',
-    'client bulkWrite'
+    'a write concern error occurs during a bulkWrite'
   ].join('|')
 );
 

test/mongodb.ts

@@ -159,6 +159,7 @@ export * from '../src/operations/aggregate';
 export * from '../src/operations/bulk_write';
 export * from '../src/operations/client_bulk_write/command_builder';
 export * from '../src/operations/client_bulk_write/common';
+export * from '../src/operations/client_bulk_write/results_merger';
 export * from '../src/operations/collections';
 export * from '../src/operations/command';
 export * from '../src/operations/count';