Add Elasticsearch db support

[gerbenmeyer]

Elasticsearch can now be used as the storage of the event store:

var es = require('eventstore')({
  type: 'elasticsearch',
  host: 'localhost:9200',
  indexName: 'eventstore',
  eventsTypeName: 'events',
  snapshotsTypeName: 'snapshots',
  log: 'warning',
  maxSearchResults: 10000
});

Note that the maxSearchResults setting here is used when all (limit -1) events are retrieved. This is because Elasticsearch doesn't support retrieving an unlimited amount of results.

[adrai]

wow

[adrai]

If you want, you can update/refactor this modules too ;-)
https://github.com/adrai/node-viewmodel/blob/master/lib/databases/elasticsearch.js
https://github.com/adrai/sessionstore/blob/master/lib/databases/elasticsearch.js

[gerbenmeyer]

I'll think about it :P