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Decoder

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Oliver Eilhard edited this page Feb 26, 2015 · 2 revisions

Elastic enables you to use your own decoder for deserializing JSON data as received from Elasticsearch. Set your own decoder when creating a new client via elastic.SetDecoder(...).

Here is an example:

// CountingDecoder needs to implement the elastic.Decoder interface.
type CountingDecoder struct {
  dec json.Decoder
  N int64
}

func (d *CountingDecoder) Decode(data []byte, v interface{}) error {
  atomic.AddInt64(&d.N, 1)
  return json.NewDecoder(bytes.NewReader(data)).Decode(v)
} 

...
client, err := elastic.NewClient(elastic.SetDecoder(&CountingDecoder{}))
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