Node.js harmony: How to yield elasticsearch.js calls (using koa)

Question

Node.js harmony: How to yield elasticsearch.js calls (using koa)

After an hour of trying various syntaxes and npm modules:

How would I achieve yielding a call to the elasticsearch client? I'm looking at something like this:

var res = yield *client.get({
  index: index,
  type: type,
  id: id,
  ignore: [404]
})

I have no idea what res should or would be, but I need to know if the document was found/exists.

Edit: Got it working with require('thunkify-wrap').genify(client.get). Now both yield client.get({...}) AND yield *client.get({...}) works. Beats me.

node.js
elasticsearch
generator
yield
koa

Answer 1

I think the easiest way could be wrapping around the Elasticsearch client with thunkify. This might do it:

var thunkify = require('thunkify');
var get = thunkify(client.get);

var res = yield get({ ... });