How do you set the bucket to write to and read from?

[pateras]

This is how I'm uploading and downloading files using gridfs-stream:

var fs = require("fs"); var gridStream = require("gridfs-stream"); var mongoose = require("mongoose");

exports.init = function(app, db) { var grid = gridStream(db, mongoose.mongo);

app.post("/UploadFile", function(request, response)
{
    var file = request.files.UploadedFile;

    var meta = request.param("Meta");
    var name = request.param("Name");

    var stream = grid.createWriteStream(
    {
        filename: name,
        metadata: meta
    });

    fs.createReadStream(file.path)
    .on("end", function()
    {
        response.send({ Success: true });
    })
    .on("Error", function(error)
    {
        HandleError(error, response);
    })
    .pipe(stream);
});

app.get("/DownloadFile", function(request, response)
{
    var selector = request.param("Selector");

    response.writeHead(200, { "Content-Type" : "image/png"});
    grid.createReadStream({ filename: "FileUploadNamed" }).pipe(response);
});

}

It works perfectly, but I'd like to specify a bucket to write to and read from. How can I do that?

Thanks for this great package!

[Reggino]

What do you mean by "bucket": a database or a collection? (i know the term bucket in Amazon S3, that could be compared to database)

A different database can be used by passing another db to your grid-constructor A different collection can be used by passing in a root-configuration to both your createReadStream and createWriteStream

Does this answer your question?

[pateras]

GridFS uses the term bucket to refer to the files and chunks. So fs.files and fs.chunks are both collections, but they make up a single "fs" bucket, as I understand it. See here: http://docs.mongodb.org/manual/core/gridfs/#gridfs-collections

Anyway, setting the root option was indeed what I needed to do. Thank you.

[cyrilchapon]

What do you mean "The root option".

Closing this ticket with a documented solution would have been a great idea.

[tjesposito]

In case anyone stumbles across this, found it in the type definitions, literally the option called 'root', this worked fine for me:

gfs.createWriteStream({
   filename: file.originalName,
   content_type: file.mimetype,
   mode: 'w',
   root: 'customBucket', /* customBucket.files, customBucket.chunks */
   metadata: {...}
})