{
  "description" : "hydra",
  "processors" : [
    {"set":{"field":"audience","value":"access","override":false,"ignore_failure":true}},
    {"set":{"field":"event.dataset","ignore_empty_value":true,"ignore_failure":true,"value":"hydra.{{{audience}}}","media_type":"text/plain"}},
    {"set":{"field":"event.action","ignore_failure":true,"copy_from":"msg"    }},
    { "pipeline":    { "name": "common" } }
  ]
}