writeStream.write callback

When using a write stream, the Node spec says that you can pass in a callback as last argument like this:

var ws = db.createWriteStream();
var o = {key:'k1', value: 'v1'};
ws.write(o, function() {
  console.log('wrote', o);
});

I don’t need the the write stream interface to be 100% compliant, but I do need to get write acknowledges, which the current implementation does not provide.

I looked at the source code and I couldn’t find an obvious way around this (except for reimplementing the write stream on top of db.put and db.del, but I didn’t want to go that way).

For instance, is there any event that is emitted after a flush? I was looking at the drain event emitted here, but I think that _writeBlock is not always true, so I can’t trust that, can I?

[rvagg]

Also, I think this thread needs an appropriate gif for write stream optimisation

[ralphtheninja]

@pgte Closing this because write-stream removal in 1.0.0