Assign completion suggest weight with field value in logstash

Elastic Stack Logstash
1

I am trying to add a weight to a completion suggest field using logstash, but I'm getting errors. Has anybody done this?

The completion suggester field is set up as follows:

display_name": {
    "type": "text",
    "fields": {
      "complete": {
        "type": "completion",
        "analyzer": "simple",
        "preserve_separators": true,
        "preserve_position_increments": true,
        "max_input_length": 50
      },
      "keyword": {
        "type": "keyword"
      }
    }
  },

What I want to do is add a weight to this field when I add records via logstash. The value for weight is in another field called cited_by_count. I tried it in logstash like this:

  mutate {
    add_field => { "[display_name][weight]" => "%{cited_by_count}"}
    remove_field => ["json_save", "version"]
  }

But when I tried to run it I got multiple errors, saying:

[main] Exception caught while applying mutate filter {:exception=>"Could not set field 'weight' on object 'Zenun Kast' to value '331'.This is probably due to trying to set a field like [foo][bar] = someValuewhen [foo] is not either a map or a string"}

2

The pre-existing field [display_name] is a string (with the value "Zenun Kast"), not an object, so you cannot create another field inside it.

3

Any recommendations on how to handle this?

4

You need to decide what to do with the existing [display_name] field. Perhaps rename it with another mutate filter. If you do not want to rename it then use a different name in your add_field.

5

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