Processor event variable interpolation

Elastic Stack Beats
1

Hi,

Hopefully a quick one. I want to add document metadata via processors, however the value depends on event values.

How would I get something like this to work? I tried the following formats with no luck.

processors:
- add_fields:
    when:
      has_fields: ['container.name']
    target: internal_namespace
    fields:
      a: '%{container.name}'
      b: '%{data.container.name}'
      c: '%{[container][name]}'
      d: '%{[data][container][name]}'
      e: container.name
      f: data.container.name

Thanks, Justin

2

Hi,

The format strings you're trying are not supported in processors.
So none of the ones your tried is written correctly but even if it was, it wouldn't work.

But the dissect processor is made to do that:

processors:
  - dissect:
      tokenizer: "%{a}"
      field: "container.id"
      target_prefix: "internal_namespace"

Should give:

"internal_namespace": {
   "a": "f99a1886631e817d33e37238d7224ad6cad5c417978a8e6cfc2e307662d956bc"
},
"container": {
   "id": "f99a1886631e817d33e37238d7224ad6cad5c417978a8e6cfc2e307662d956bc"
}

Edit: It's made... to do a lot more than that, but it can do just that too.

3

This is what I was looking for, thanks!