Retrieve transactions from APM using NEST

[NoviceESCoder]

I have an asp.net core web app application that will write logs using serilog to elasticsearch and also can read the logs from elasticsearch using NEST. I also have it set up where I can use APM for my application. If I wanted to retrieve the transactions that are in APM using NEST or the transactions on a specific date, is this something possible? Any advice/tutorial/documentation on this would be great!

[GregKalapos]

Yes, this is possible, APM data is like any other data in elasticsearch, so you have access to it.

Here is a good documentation on how APM data is stored - you can just query those indices.

[NoviceESCoder]

You are the best! @GregKalapos Thank you!!

[forloop (Russ Cam)]

Answered the same question on Stack Overflow, including here for completeness.

You'll want to target the apm-*-transaction aliase(s)

In Kibana Dev tools

GET apm-*-transaction/_search
{
  "query": {
    "range": {
      "@timestamp": {
        "gte": "2021-06-04T00:00:00Z",
        "lte": "2021-06-05T00:00:00Z"
      }
    }
  }
}

In NEST (change dynamic to your document type)

var client = new ElasticClient();
	
var searchResponse = client.Search<dynamic>(s => s
	.Index("apm-*-transaction")
	.Query(q => q
		.DateRange(dr => dr
			.Field("@timestamp")
			.GreaterThanOrEquals("2021-06-04T00:00:00Z")
			.LessThanOrEquals("2021-06-05T00:00:00Z")
		)
	)
);

[NoviceESCoder]

Thank you for the detailed explanation!