GODRIVER-2388 Improved Bulk Write API.

internal/driverutil/operation.go

@@ -28,4 +28,5 @@ const (
 	ListIndexesOp       = "listIndexes"       // ListIndexesOp is the name for listing indexes
 	ListDatabasesOp     = "listDatabases"     // ListDatabasesOp is the name for listing databases
 	UpdateOp            = "update"            // UpdateOp is the name for updating
+	BulkWriteOp         = "bulkWrite"         // BulkWriteOp is the name for client-level bulk write
 )

mongo/bulk_write.go

@@ -164,8 +164,7 @@ func (bw *bulkWrite) runBatch(ctx context.Context, batch bulkWriteBatch) (BulkWr
 
 func (bw *bulkWrite) runInsert(ctx context.Context, batch bulkWriteBatch) (operation.InsertResult, error) {
 	docs := make([]bsoncore.Document, len(batch.models))
-	var i int
-	for _, model := range batch.models {
+	for i, model := range batch.models {
 		converted := model.(*InsertOneModel)
 		doc, err := marshal(converted.Document, bw.collection.bsonOpts, bw.collection.registry)
 		if err != nil {
@@ -177,7 +176,6 @@ func (bw *bulkWrite) runInsert(ctx context.Context, batch bulkWriteBatch) (opera
 		}
 
 		docs[i] = doc
-		i++
 	}
 
 	op := operation.NewInsert(docs...).

mongo/client.go

@@ -73,14 +73,15 @@ type Client struct {
 	logger         *logger.Logger
 
 	// client-side encryption fields
-	keyVaultClientFLE  *Client
-	keyVaultCollFLE    *Collection
-	mongocryptdFLE     *mongocryptdClient
-	cryptFLE           driver.Crypt
-	metadataClientFLE  *Client
-	internalClientFLE  *Client
-	encryptedFieldsMap map[string]interface{}
-	authenticator      driver.Authenticator
+	isAutoEncryptionSet bool
+	keyVaultClientFLE   *Client
+	keyVaultCollFLE     *Collection
+	mongocryptdFLE      *mongocryptdClient
+	cryptFLE            driver.Crypt
+	metadataClientFLE   *Client
+	internalClientFLE   *Client
+	encryptedFieldsMap  map[string]interface{}
+	authenticator       driver.Authenticator
 }
 
 // Connect creates a new Client and then initializes it using the Connect method. This is equivalent to calling
@@ -194,6 +195,7 @@ func NewClient(opts ...*options.ClientOptions) (*Client, error) {
 	}
 	// AutoEncryptionOptions
 	if clientOpt.AutoEncryptionOptions != nil {
+		client.isAutoEncryptionSet = true
 		if err := client.configureAutoEncryption(clientOpt); err != nil {
 			return nil, err
 		}
@@ -424,8 +426,6 @@ func (c *Client) StartSession(opts ...*options.SessionOptions) (Session, error)
 		return nil, replaceErrors(err)
 	}
 
-	// Writes are not retryable on standalones, so let operation determine whether to retry
-	sess.RetryWrite = false
 	sess.RetryRead = c.retryReads
 
 	return &sessionImpl{
@@ -851,6 +851,76 @@ func (c *Client) createBaseCursorOptions() driver.CursorOptions {
 	}
 }
 
+// BulkWrite performs a client-level bulk write operation.
+func (c *Client) BulkWrite(ctx context.Context, models *ClientWriteModels,
+	opts ...*options.ClientBulkWriteOptions) (*ClientBulkWriteResult, error) {
+	// TODO: Remove once DRIVERS-2888 is implemented.
+	if c.isAutoEncryptionSet {
+		return nil, errors.New("bulkWrite does not currently support automatic encryption")
+	}
+	bwo := options.MergeClientBulkWriteOptions(opts...)
+
+	if ctx == nil {
+		ctx = context.Background()
+	}
+
+	sess := sessionFromContext(ctx)
+	if sess == nil && c.sessionPool != nil {
+		sess = session.NewImplicitClientSession(c.sessionPool, c.id)
+		defer sess.EndSession()
+	}
+
+	err := c.validSession(sess)
+	if err != nil {
+		return nil, err
+	}
+
+	transactionRunning := sess.TransactionRunning()
+	wc := c.writeConcern
+	if transactionRunning {
+		wc = nil
+	}
+	if bwo.WriteConcern != nil {
+		if transactionRunning {
+			return nil, errors.New("cannot set write concern after starting a transaction")
+		}
+		wc = bwo.WriteConcern
+	}
+	if !writeconcern.AckWrite(wc) {
+		if bwo.Ordered == nil || *bwo.Ordered {
+			return nil, errors.New("cannot request unacknowledged write concern and ordered writes")
+		}
+		sess = nil
+	}
+
+	writeSelector := description.CompositeSelector([]description.ServerSelector{
+		description.WriteSelector(),
+		description.LatencySelector(c.localThreshold),
+	})
+	selector := makePinnedSelector(sess, writeSelector)
+
+	op := clientBulkWrite{
+		models:                   models.models,
+		ordered:                  bwo.Ordered,
+		bypassDocumentValidation: bwo.BypassDocumentValidation,
+		comment:                  bwo.Comment,
+		let:                      bwo.Let,
+		session:                  sess,
+		client:                   c,
+		selector:                 selector,
+		writeConcern:             wc,
+	}
+	if bwo.VerboseResults == nil || !(*bwo.VerboseResults) {
+		op.errorsOnly = true
+	} else if !writeconcern.AckWrite(wc) {
+		return nil, errors.New("cannot request unacknowledged write concern and verbose results")
+	}
+	if err = op.execute(ctx); err != nil {
+		return nil, replaceErrors(err)
+	}
+	return &op.result, nil
+}
+
 // newLogger will use the LoggerOptions to create an internal logger and publish
 // messages using a LogSink.
 func newLogger(opts *options.LoggerOptions) (*logger.Logger, error) {