How to do conditional update and insert in ElasticSearch 6.1?

Elastic Stack Elasticsearch
1

I want to do conditional update if the document already exists and if not I want to just insert it. I tried something like below it does the conditional update if the doc already exists in ES but it fails to insert if there is no doc in ES

{
    "scripted_upsert":true,
    "script" : {
        "inline": "if(ctx._source.num > params._source.num) {ctx._source = params._source}",
        "lang": "painless",
        "params" : {
            "_source" : {
                "num": 7,
                "url":"foo.com/bar",
                "response":404,
                "time":"2014-01-01 12:32"
            }
        }
    },
    "upsert" : {}
}

Also I am trying not replicate the same doc in params as well as in the upsert element since my doc can have 100 fields.

2

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