Avoid existing data (if present) in the received json event from being overwritten by added ECS metadata. #164
Description
According to the documentation (https://www.elastic.co/guide/en/logstash/current/plugins-inputs-http.html#plugins-inputs-http-ecs_metadata), the following ECS metadata is populated by the http input plugin:
- Host IP address
- Complete HTTP headers
- HTTP version
- client user agent
- host domain and port
- HTTP method
- Query path
- Request content length
- Request mime type
The following issue was logged because the host field was being overwritten: #61
We would like the http input plugin to have a way to prevent overwriting not just the host metadata but all metadata.