Struct mongodb::sync::gridfs::GridFsBucket

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pub struct GridFsBucket { /* private fields */ }
Available on crate features sync or tokio-sync only.
Expand description

A GridFsBucket provides the functionality for storing and retrieving binary BSON data that exceeds the 16 MiB size limit of a MongoDB document. Users may upload and download large amounts of data, called files, to the bucket. When a file is uploaded, its contents are divided into chunks and stored in a chunks collection. A corresponding FilesCollectionDocument is also stored in a files collection. When a user downloads a file, the bucket finds and returns the data stored in its chunks.

GridFsBucket uses std::sync::Arc internally, so it can be shared safely across threads or async tasks.

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impl GridFsBucket

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pub fn read_concern(&self) -> Option<&ReadConcern>

Gets the read concern of the GridFsBucket.

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pub fn write_concern(&self) -> Option<&WriteConcern>

Gets the write concern of the GridFsBucket.

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pub fn selection_criteria(&self) -> Option<&SelectionCriteria>

Gets the read preference of the GridFsBucket.

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pub fn delete(&self, id: Bson) -> Result<()>

Deletes the FilesCollectionDocument with the given id and its associated chunks from this bucket. This method returns an error if the id does not match any files in the bucket.

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pub fn find( &self, filter: Document, options: impl Into<Option<GridFsFindOptions>> ) -> Result<Cursor<FilesCollectionDocument>>

Finds the FilesCollectionDocuments in the bucket matching the given filter.

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pub fn rename(&self, id: Bson, new_filename: impl AsRef<str>) -> Result<()>

Renames the file with the given id to new_filename. This method returns an error if the id does not match any files in the bucket.

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pub fn drop(&self) -> Result<()>

Removes all of the files and their associated chunks from this bucket.

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impl GridFsBucket

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pub fn open_download_stream(&self, id: Bson) -> Result<GridFsDownloadStream>

Opens and returns a GridFsDownloadStream from which the application can read the contents of the stored file specified by id.

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pub fn open_download_stream_by_name( &self, filename: impl AsRef<str>, options: impl Into<Option<GridFsDownloadByNameOptions>> ) -> Result<GridFsDownloadStream>

Opens and returns a GridFsDownloadStream from which the application can read the contents of the stored file specified by filename.

If there are multiple files in the bucket with the given filename, the revision in the options provided is used to determine which one to download. See the documentation for GridFsDownloadByNameOptions for details on how to specify a revision. If no revision is provided, the file with filename most recently uploaded will be downloaded.

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impl GridFsBucket

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pub fn open_upload_stream( &self, filename: impl AsRef<str>, options: impl Into<Option<GridFsUploadOptions>> ) -> GridFsUploadStream ⓘ

Creates and returns a GridFsUploadStream that the application can write the contents of the file to. This method generates a unique ObjectId for the corresponding FilesCollectionDocument’s id field that can be accessed via the stream’s id method.

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pub fn open_upload_stream_with_id( &self, id: Bson, filename: impl AsRef<str>, options: impl Into<Option<GridFsUploadOptions>> ) -> GridFsUploadStream ⓘ

Opens a GridFsUploadStream that the application can write the contents of the file to. The provided id will be used for the corresponding FilesCollectionDocument’s id field.

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