elasticsearch plugin identify the proto?

Zeek
1

In elasticsearch.cc

bool ElasticSearch::DoWrite(int num_fields, const Field* const * fields,
    Value** vals)

We can get the contents, how can I identify the proto of the content?

In local logging, it will write to http.log, But in elasticsearch it
lost the proto message.

2

The name of the log stream is stored as the type field in ElasticSearch.