Struct GridFSBucket

pub struct GridFSBucket { /* private fields */ }

GridFS bucket. A prefix under which a GridFS system’s collections are stored. Spec

Implementations

impl GridFSBucket

pub async fn delete(&self, id: ObjectId) -> Result<(), GridFSError>

Given a @id, delete this stored file’s files collection document and associated chunks from a GridFS bucket. Spec

 use mongodb_gridfs::{GridFSBucket, GridFSError};
 let bucket = GridFSBucket::new(db.clone(), Some(GridFSBucketOptions::default()));
 bucket.delete(id).await?;

Errors

Raise GridFSError::FileNotFound when the requested id doesn’t exists.

impl GridFSBucket

pub async fn open_download_stream_with_filename( &self, id: ObjectId, ) -> Result<(impl Stream<Item = Vec<u8>>, String), GridFSError>

Opens a Stream from which the application can read the contents of the stored file specified by @id. Spec

Returns a Stream.

Examples

use tokio_stream::StreamExt;
use mongodb_gridfs::{options::GridFSBucketOptions, GridFSBucket, GridFSError};
let bucket = GridFSBucket::new(db.clone(), Some(GridFSBucketOptions::default()));
let (mut cursor, filename) = bucket.open_download_stream_with_filename(id).await?;
assert_eq!(filename, "test.txt");
let buffer = cursor.next().await.unwrap();

Errors

Raise GridFSError::FileNotFound when the requested id doesn’t exists.

pub async fn open_download_stream( &self, id: ObjectId, ) -> Result<impl Stream<Item = Vec<u8>>, GridFSError>

Opens a Stream from which the application can read the contents of the stored file specified by @id. Spec

Returns a Stream.

Examples

use tokio_stream::StreamExt;
use mongodb_gridfs::{options::GridFSBucketOptions, GridFSBucket, GridFSError};
let bucket = GridFSBucket::new(db.clone(), Some(GridFSBucketOptions::default()));
let mut cursor = bucket.open_download_stream(id).await?;
let buffer = cursor.next().await.unwrap();

Errors

Raise GridFSError::FileNotFound when the requested id doesn’t exists.

impl GridFSBucket

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

Drops the files and chunks collections associated with this bucket. Spec

impl GridFSBucket

pub async fn find( &self, filter: Document, options: GridFSFindOptions, ) -> Result<Cursor<Document>>

Find and return the files collection documents that match @filter. Spec

Examples

use bson::doc;
use tokio_stream::StreamExt;
use mongodb_gridfs::{bucket::GridFSBucket, options::GridFSFindOptions};

let mut cursor = bucket
        .find(doc! {"filename":"test.txt"}, GridFSFindOptions::default())
        .await?;

    while let Some(_doc) = cursor.next().await {
        // ...
    }

impl GridFSBucket

pub async fn rename( &self, id: ObjectId, new_filename: &str, ) -> Result<UpdateResult>

Renames the stored file with the specified @id. Spec

impl GridFSBucket

pub async fn upload_from_stream<'a>( &mut self, filename: &str, source: impl AsyncRead + Unpin, options: Option<GridFSUploadOptions>, ) -> Result<ObjectId, Error>

Uploads a user file to a GridFS bucket. The driver generates the file id.

Reads the contents of the user file from the @source Stream and uploads it as chunks in the chunks collection. After all the chunks have been uploaded, it creates a files collection document for @filename in the files collection.

Returns the id of the uploaded file.

Note: this method is provided for backward compatibility. In languages that use generic type parameters, this method may be omitted since the TFileId type might not be an ObjectId.

Examples

use mongodb_gridfs::{options::GridFSBucketOptions, GridFSBucket};
let mut bucket = GridFSBucket::new(db.clone(), Some(GridFSBucketOptions::default()));
let id = bucket
    .upload_from_stream("test.txt", "stream your data here".as_bytes(), None)
    .await?;

impl GridFSBucket

pub fn new(db: Database, options: Option<GridFSBucketOptions>) -> GridFSBucket

Create a new GridFSBucket object on @db with the given @options.

Trait Implementations

impl Clone for GridFSBucket

fn clone(&self) -> GridFSBucket

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GridFSBucket

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.