Problem with MongoDB GridFS Saving Files with Node.JS

Question

I have a function saving a file to gridfs. It somehow stopped working sporadically after a refactor and I\'ve spent over 2 hours staring blankly at it. I swear it\'s rough

Answer 1

There are a couple of solutions. You can use writeBuffer, writeFile or the new simple grid class. Under is your example adjusted for the fact of using a buffer instance.

// You can use an object id as well as filename now
var gs = new mongodb.GridStore(this.db, filename, "w", {
  "chunk_size": 1024*4,
  metadata: {
    hashpath:gridfs_name,
    hash:hash,
    name: name
  }
});

gs.open(function(err,store) {
  // Write data and automatically close on finished write
  gs.writeBuffer(data, true, function(err,chunk) {
    // Each file has an md5 in the file structure
    cb(err,hash,chunk);
  });
});

In general the best place to start are the tests that cover a wide usage profile for the gridfs classes. Look at.

https://github.com/christkv/node-mongodb-native/tree/master/test/gridstore