A writable stream that enables you to write buffers to GridFS.
Do not instantiate this class directly. Use openUploadStream() instead.
bucket GridFSBucket
Handle for this stream's corresponding bucket
filename string
The value of the 'filename' key in the files doc
options object optional
Optional settings.
Name Type Default Descriptionid string | number | object optional
Custom file id for the GridFS file.
chunkSizeBytes number optional
The chunk size to use, in bytes
w number | string optional
Deprecated The write concern. Use writeConcern instead.
wtimeout number optional
Deprecated The write concern timeout. Use writeConcern instead.
j boolean false optional
Deprecated Specify a journal write concern. Use writeConcern instead.
writeConcern object | WriteConcern optional
Specify write concern settings.
disableMD5 boolean false optional
If true, disables adding an md5 field to file data
Places this write stream into an aborted state (all future writes fail)
and deletes all chunks that have already been written.
Tells the stream that no more data will be coming in. The stream will
persist the remaining data to MongoDB, write the files document, and
then emit a 'finish' event.
chunk Buffer
Buffer to write
encoding String
Optional encoding for the buffer
callback GridFSBucket~errorCallback
Function to call when all files and chunks have been persisted to MongoDB
Write a buffer to the stream.
Name Type Descriptionchunk Buffer
Buffer to write
encoding String
Optional encoding for the buffer
callback GridFSBucket~errorCallback
Function to call when the chunk was added to the buffer, or if the entire chunk was persisted to MongoDB if this chunk caused a flush.
An error occurred
Type:end() was called and the write stream successfully wrote the file
metadata and all the chunks to MongoDB.
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