Add ignoreAttachements option for couchDb river

[dadoonet]

When couchDB river reads _changes API, _changes always returns attachments for each document.

Here is a simple patch to help users to disable this default feature.

It adds a new option to the couchDb river called : ignore_attachments :

• false (default) : attachments will be pushed into Elastic Search
• true : attachments will be ignored when pushing to Elastic Search

You can use it as follows :

{
  "type":"couchdb",
  "couchdb": {
    "host":"localhost",
    "port":"5984",
    "db":"mytest",
    "ignore_attachments":true
  }
}

BTW, I added a small test case.

Any comments are welcomed.

I will add a pull request to update the couchDb river guide to describe this new option also.

[dadoonet]

Here is the documentation pull request : https://github.com/elasticsearch/elasticsearch.github.com/pull/72

[kimchy]

Can you change the setting name to ignore_attachments?

[dadoonet]

Thanks for the feedback. It's done.

[kimchy]

Pushed, with some cleanups..., thanks!